cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Discrete dynamics in cluster integrable systems from geometric $R$-matrix transformations
Creators: name: George, Terrence
name: Ramassamy, Sanjay
Publisher: name: arXiv
Year: 2022
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: Combinatorics (math.CO)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Cluster integrable systems are a broad class of integrable systems modelled on bipartite dimer models on the torus. Many discrete integrable dynamics arise by applying sequences of local transformations, which form the cluster modular group of the cluster integrable system. This cluster modular group was recently characterized by the first author and Inchiostro. There exist some discrete integrable dynamics that make use of non-local transformations associated with geometric $R$-matrices. In this article we characterize the generalized cluster modular group -- which includes both local and non-local transformations -- in terms of extended affine symmetric groups. We also describe the action of the generalized cluster modular group on the spectral data associated with cluster integrable systems.
description: 26 pages, 11 figures, final version to appear in Combinatorial Theory
Some aspects of the biogenesis of mitochondria in saccharomyces cerevisiae, with particular reference to the effects of anaerobiosis and chloramphenicol on the formation of the organelle
Creators: name: Huang, Minta.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
The well adapted connection of a $(J^{2}=\pm 1)$-metric manifold
Creators: name: Etayo, Fernando
name: Santamaría, Rafael
Publisher: name: arXiv
Year: 2015
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C15, 53C50, 53C55, 53C07

description: In this paper, we study the well adapted connection attached to a $(J^{2}=\pm 1)$-metric manifold, proving it exists for any of the four geometries and obtaining a explicit formula as a derivation law. Besides we characterize the coincidence of the well adapted connection with the Levi Civita and the Chern connections.
Impact of Residual Aluminium Contamination on the Determination of Boron and Phosphorus Densities Using Hall Effect in a Solar Grade Silicon Ingot – A Comparison to Other Characterization Techniques
Creators: name: Fauveau, A.
name: Martel, B.
name: Veirman, J.
name: Drevet, B.
name: Lignier, H.
name: Kaminski-Cachopo, A.
name: Ducroquet, F.
Publisher: name: WIP
Year: 2017
Subjects: Silicon Photovoltaics
Feedstock, Crystallisation, Wafering, Defect Engineering

description: 33rd European Photovoltaic Solar Energy Conference and Exhibition; 549-552
description: Up to now, dopant quantification in compensated silicon is routinely performed with physical and chemical characterization techniques based on mass spectroscopy. As an alternative to these techniques, a complementary method based on Hall Effect measurements has been studied. This approach has already been proven to be fast, easy to use and efficient in determining boron and phosphorus densities in materials for which other residual dopant elements were in negligible concentrations. The present paper evaluates the influence of a third dopant on the traditionally used two dopant based Hall effect method, via the study of an Upgraded Metallurgical Grade (UMG) ingot that contains a significant residual Aluminium content. Some possible improvements of the Hall effect-based technique are discussed to improve its ability to simultaneously quantify more than two doping species, a task that remains challenging up to now.
The pollination biology of Bulbophyllum species from Peninsular Malaysia
Creators: name: Ong, Poh Teck
Publisher: name: Monash University
Year: 2017
Subjects: Uncategorized

description: Bulbophyllum is the largest genus within the orchid family with an estimated number of 2,200 to 2,400 species worldwide. In Peninsular Malaysia, 126 taxa of Bulbophyllum spp. were previously recorded. This account, however, has not been updated for the past two decades. An updated checklist of Bulbophyllum spp. have brought the total number of species found in Peninsular Malaysia to 159 taxa or an increment of about 20 per cent. In the course of updating the checklist of the Bubophyllum of Peninsular Malaysia, five new species namely B. concavilabium, B. leptoflorum, B. naviculiforme, B. novemfilum and B. pauzii were described while B. praetervisum was reported as a new record. Information on the pollination in the genus Bulbophyllum especially Peninsular Malaysian species is scarce. Therefore, direct observations of Bulbophyllum pollination events were carried out to collect data even if it was using ex-situ plants. As results from this study, 32 Bulbophyllum spp. were observed visited and/or pollinated by various insects (mainly flies) of which 17 observations were recorded for the first time. Photographic and video evidences accompany these pollination observations. In the past, Bulbophyllum flowers are generally regarded as unpleasant or foul smelling. From this study, the floral scents were categorized into five types of scent based on human perception, which are musty, fishy, fragrant, spicy and stinky. The chemical profiling of floral compounds using High-Performance Liquid Chromatography (HPLC) analysis together with the Principal Coordinates Analysis (PCoA) using the binary data from the HPLC results further supported the categorising of these five floral scent types. Cluster analysis performed using the Unweighted Pair Group Method with Arithmetic Mean (UPGMA) showed interspecific relationships between the sampled taxa based on floral compounds found in the Bulbophyllum spp. studied. In addition to that, Bulbophyllum floral traits were scored and analysed using Statistical Package for the Social Sciences (SPSS) to determine the correlation between floral morphology and scent; and between floral morphology and pollinators. From the results, a total of 19, 18 and 20 character traits were found to be associated to pollinator family, pollinator guilds and floral scent groups respectively. From the total traits, ten character traits for pollinator family, 12 traits for pollinator guilds and eight traits for floral scent groups were found to be more important based on the mean values of CDA analysis. Additional material(s) submitted with thesis.
Characterizing the performance of heat rectifiers
Creators: name: Khandelwal, Shishir
name: Perarnau-Llobet, Martí
name: Seah, Stella
name: Brunner, Nicolas
name: Haack, Géraldine
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A physical system connected to two thermal reservoirs at different temperatures is said to act as a heat rectifier when it is able to bias the heat current in a given direction, similarly to an electronic diode. We propose to quantify the performance of a heat rectifier by mapping out the trade-off between heat currents and rectification. By optimizing over the system's parameters, we obtain Pareto fronts, which can be efficiently computed using general coefficients of performance. This approach naturally highlights the fundamental trade-off between heat rectification and conduction, and allows for a meaningful comparison between different devices for heat rectification. We illustrate the practical relevance of these ideas on three minimal models for spin-boson nanoscale rectifiers, i.e., systems consisting of one or two interacting qubits coupled to bosonic reservoirs biased in temperature. Our results demonstrate the superiority of two strongly-interacting qubits for heat rectification.
description: 10 pages, 6 figures. Comments welcome
Eco-Solar Factory: Multicrystalline Silicon Ingot Crystallisation from Reusable Silicon Nitride Crucibles
Creators: name: Bellmann, M.P.
name: Stokkan, G.
name: Ciftja, A.
name: Roligheten, R.
name: Denafas, J.
name: Buchholz, F.
name: Kaden, T.
Publisher: name: WIP
Year: 2017
Subjects: Silicon Photovoltaics
Feedstock, Crystallisation, Wafering, Defect Engineering

description: 33rd European Photovoltaic Solar Energy Conference and Exhibition; 309-312
description: Preliminary results on silicon ingot crystallisation from reusable silicon nitride crucibles are reported.
High Performance multicrystalline silicon ingots (HPmc-Si) using granular polysilicon for seeding were grown. The
obtained material quality was investigated at ingot, wafer and cell level. Finally, PV modules were manufactured to
demonstrate the potential of such material at commercial scale. So far, the silicon nitride crucible was used in five
subsequent runs. Material performance and cell efficiencies are comparable to reference material grown from high
purity electronic grade quartz crucibles. Two 60 cell modules were assembled and the module power output is
comparable to commercial modules of the same category.
Developing a common visual literacy amongst first year chemistry students using collaborative drawing tasks
Creators: name: Dickson, Hayden
Publisher: name: Monash University
Year: 2017
Subjects: Uncategorized

description: This thesis reports on research into understanding the ability of first year chemistry students to visually represent their understanding of chemistry concepts. The aim was to gather data that would inform the development and implementation of student-generated drawing questions into a first year university chemistry laboratory program; part of which involved the development of a criteria framework for assessing the drawings. The purpose of introducing drawing questions was to help diagnose alternative conceptions and improve conceptual understanding by engaging students ' at the macro, symbolic and submicro levels of representation. For the introduction to be successful, a common visual literacy needed to be developed amongst students to familiarise them with visually representing submicro particles, therefore enabling comparable drawings to be produced for assessment purposes. Introducing submicro drawing questions in the laboratory program was deemed appropriate after a review of the existing questions highlighted that students were being asked to express their understanding of concepts at the macro and symbolic levels of representation, but not the submicro level. Investigating students' ability to visually express chemistry concepts involved a review of the relevant chemistry education literature, student interviews and the collection of over three hundred student-generated drawings that were produced solely from the imagination of the participants. The introduction of assessable drawing questions included asking students to attempt three drawing tasks while following guidelines that were worded to allow the visual diagnosis of a range of commonly reported alternative conceptions.
Probing the deep end of the Milky Way with \emph{Kepler}: Asteroseismic analysis of 854 faint Red Giants misclassified as Cool Dwarfs
Creators: name: Mathur, S.
name: Garcia, R. A.
name: Huber, D.
name: Regulo, C.
name: Stello, D.
name: Beck, P. G.
name: Houmani, K.
name: Salabert, D.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Asteroseismology has proven to be an excellent tool to determine not only the global stellar properties with a good precision but also to infer stellar structure, dynamics, and evolution for a large sample of Kepler stars. Prior to the launch of the mission the properties of Kepler targets were inferred from broadband photometry, leading to the Input Catalog (KIC Brown et al. 2011). The KIC was later revised in the Kepler Star Properties Catalog (Huber et al. 2014), based on literature values and an asteroseismic analysis of stars which were unclassified in the KIC. Here we present an asteroseismic analysis of 45,400 stars which were classified as dwarfs in the Kepler Star Properties Catalog. We found that around 2% of the sample shows acoustic modes in the typical frequency range that put them in the red-giant category rather than cool dwarfs. We analyse the asteroseismic properties of these stars, derive their surface gravities, masses, and radii and present updated effective temperatures and distances. We show that the sample is significantly fainter than the previously known oscillating giants in the Kepler field, with the faintest stars reaching down to a Kepler magnitude, Kp~16. We demonstrate that 404 stars are at distances beyond 5 kpc and that the stars are significantly less massive than for the original Kepler red-giant sample, consistent with a population of distant halo giants. A comparison with a galactic population model shows that up to 40 stars might be genuine halo giants, which would increase the number of known asteroseismic halo stars by a factor of 4. The detections presented here will provide a valuable sample for galactic archeology studies.
description: 14 pages, 13 figures. Accepted for publication in ApJ
A sucrose-gap apparatus suitable for recording from smooth muscle, and some examples of its application
Creators: name: Goldner, S. F.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Relative Phase Distribution and the Precision of Optical Phase Sensing in Quantum Metrology
Creators: name: Braz, Felipe F.
name: Calixto, Tamíris R.
name: Saldanha, Pablo L.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: One of the quantum metrology goals is to improve the precision in the measurement of a small optical phase introduced in one optical mode in an interferometer, i.e., phase sensing. In this paper, we obtain the relative phase distribution introduced by Luis and Sánchez-Soto (LSS) [Phys. Rev. A $\mathbf{53}$, 495 (1996)] for several two-mode pure quantum light states useful in quantum metrology. We show that, within the numerical precision of our calculations, the Fisher information obtained from the LSS relative phase distribution is equal to the quantum Fisher information for the considered states (the average difference for the tested states is smaller than 0.1%). Our results indicate that the LSS relative phase distribution can be used to predict the minimum uncertainty possible in the process of phase sensing in quantum metrology, since this uncertainty depends on the quantum Fisher information, at least for pure states.
description: 9 pages, 8 figures
Going Global to Stay Local: The Effect of International Syndication Experience on the Performance of Domestic Venture Capital Investments
Creators: name: Guerini, Massimiliano
name: Hong, Suting
Publisher: name: Zenodo
Year: 2020
Subjects: Venture Capital
VICO
Successful Exit
Inter-organizational learning

description: We study the effect of international syndication experience of domestic VC firms with foreign VC firms on the performance of entrepreneurial firms. Using comprehensive data of VC investments in Europe, we find that, as a domestic VC firm acquires more syndication experience with foreign VC firms, the likelihood of successful exit significantly improves for entrepreneurial firms subsequently funded by the domestic VC firm. Such positive effects on success rates are stronger for domestic VC firms that previously syndicated with more reputable foreign VC firms. Experience with foreign VC firms also increases the likelihood of achieving a successful exit in a foreign market. The results are robust to controlling for the endogeneity of syndication experience with foreign VC firms. Our findings provide evidence for a positive, enduring effect through syndication with foreign VC firms, and suggest the importance of opening-up domestic markets to exploit the positive effects of syndicating with foreign VC firms.
Modelling solar access for urban sustainable development
Creators: name: Li, Yang
Publisher: name: Monash University
Year: 2017
Subjects: Uncategorized

description: With the increasing environmental issues caused by burning fossil fuels, renewable energy, especially solar energy, is accepted and widely used in the world. However, in the urban area, with the density of buildings, solar access could be limited by the shadow from nearby man-made objects and vegetations. Therefore, sustainably developing cities without restricting solar irradiation for the active and passive applications is attracting extensive attention. The aim of this thesis is to provide a tool for urban designers and planners to predict solar energy in obstructed situations in the urban area. In this thesis, a comprehensive method related to inter-discipline for modelling solar access in an urban area is presented. This method introduces 3D urban construction, shading analysis and solar energy evaluation. A case study of Glen Waverley in Victoria, Australia is used to illustrate the method. In this case study, the detailed geometric urban model is generated by combining building footprints, aerial photos and LiDAR data. This intermediate result of the 3D urban model is used for the environmental analysis of both shading analysis and solar analysis. A scenario analysis is also conducted into how the construction of a multi-storey car park in the study area affects the solar access of its adjacent area. Then, a test for application is the erection of a multi-storey car park in the study area. The result shows that this approach can offer an invaluable and effective tool for the estimation of solar irradiation and an improved urban plan considering solar energy in a neighbourhood.
Large-Area (6 Inch) Screen-Printed IBC Solar Cells with Efficiency Above 24,1% without Passivated Contacts
Creators: name: Xu, G.
name: Yang, Y.
name: Zhang, X.
name: Chen, S.
name: Liu, W.
name: Chen, Y.
name: Chen, Y.
name: Altermatt, P.P.
name: Verlinden, P.J.
name: Feng, Z.
Publisher: name: WIP
Year: 2017
Subjects: Silicon Photovoltaics
Homojunction Solar Cells

description: 33rd European Photovoltaic Solar Energy Conference and Exhibition; 428-430
description: A maximum open-circuit voltage of 702 mV and a full area efficiency of 24.13% has been achieved on
6 inch square n-type CZ wafer with a Interdigitated Back Contact (IBC) cell structure, without utilizing the
technology of passivated contacts. Conventional industrially feasible and low cost processes are used for this cell
fabrication. This result is achieved by applying a selective emitter structure, improved surface passivation and redesigned
rear pattern with the assistance of numerical simulation. The contact resistivity on both emitter and BSF
region is reduced to less than 0.5 mcm2. The power loss analysis shows that the biggest recombination loss is within
the bulk, summing up to 45% of the total recombination current at Pmpp.
$R(D^{(*)})$ and $\mathcal{B}r(B \rightarrow τν_τ)$ in a Flipped/Lepton-Specific 2HDM with anomalously enhanced charged Higgs coupling to $τ$/b
Creators: name: Dhargyal, Lobsang
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Babar, Belle and recently LHCb has reported an excess in the measurements of $R(D^{*})$, $R(D)$ and $\mathcal{B}r(B \rightarrow τν_τ )$ than expected from SM, a possible signature of lepton flavor universality violating NP. In this work we analyze the phenomenological implications for these decay modes in a Flipped/Lepton-Specific 2HDM with anomalously enhanced Yukawa coupling of $H^{\pm}$ to $τ$/b. When experimental and theoretical errors are added in quadrature, we conclude that this phenomenological extension of SM can give results in agreement within 1$σ$ deviation for the combination of $R(D^{(*)})$ and $\mathcal{B}r(B \rightarrow τν_τ)$ compare to about 4$σ$ deviation from SM from the latest combined[Babar,Belle,LHCb] experimental data for these observables.
description: 10 pages
Ultrafast In-Line Capable Regeneration Process for Preventing Light Induced Degradation of Boron-Doped p-Type Cz-Silicon Perc Solar Cells
Creators: name: Brand, A.A.
name: Krauß, K.
name: Wild, P.
name: Schörner, S.
name: Gutscher, S.
name: Roder, S.
name: Rein, S.
name: Nekarda, J.
Publisher: name: WIP
Year: 2017
Subjects: Silicon Photovoltaics
Manufacturing & Production

description: 33rd European Photovoltaic Solar Energy Conference and Exhibition; 382-387
description: Solar cells based on boron-doped p-type Czochralski-grown silicon (Cz-Si) substrates suffer from
light-induced degradation (LID) which is related to a metastable boron-oxygen defect and limits the achievable cell
efficiency significantly, but can be eliminated by carrier injection at elevated temperatures within a so-called
regeneration process. We have developed an ultrafast regeneration process (UFR) to prevent up to 98% of the LID
effect in less than 4 seconds process-time. The technology behind this process has been implemented in an in-line
prototype tool with belt speeds of up to 8000 mm/min. Compared to competing techniques the technology introduced
here enables tools with smaller footprint and broader process window, offering irradiation intensities up to 1 MW/m²
and temporal and spatial modulation of the irradiation intensity with up to 100 Hz. Undistorted in-situ temperature
measurements can be acquired via commercially available thermographic imaging equipment. Further, we introduce a
new parameter called regeneration completeness in order to allow benchmarking for BO-regeneration processes. It
quantifies the effectiveness of BO-regeneration processes independent of the overall efficiency in order to allow a
direct comparison of the quality of different regeneration processes.
Laser-Transferred Niv-Seed for the Metallization of Silicon Heterojunction Solar Cells by Cu-Plating
Creators: name: Rodofili, A.
name: Wolke, W.
name: Kroely, L.
name: Bivour, M.
name: Cimiotti, G.
name: Bartsch, J.
name: Glatthaar, M.
name: Nekarda, J.-F.
Publisher: name: WIP
Year: 2017
Subjects: Silicon Photovoltaics
Heterojunction Solar Cells

description: 33rd European Photovoltaic Solar Energy Conference and Exhibition; 402-405
description: We present results about a laser-based method for the metallization of silicon heterojunction solar cells
by Cu-plating. The method consists of first depositing a dielectric layer as plating mask onto the transparent
conductive oxide (TCO) and then depositing a NiV seed layer onto the plating mask by laser induced forward transfer
(LIFT). Afterwards, the seed layer is fired through the plating mask in a second laser step in order to form a contact
to the TCO. By dividing the process into laser transfer and firing (LTF) each step can be optimized separately. The
final metallization is produced by Cu-plating. A pulse plating process is applied to further reduce parasitic plating.
Different dielectric layers are tested as plating masks for their resistance against parasitic plating. The combination of
a 15 nm thick Al2O3 layer as plating mask in conjunction with pulse plating is completely free of parasitic plating.
Finally an efficiency of 22.2% is reached outperforming the screen printed reference cells by 0.5%abs.
Low-Cost Fabrication of Patterned Electrodes in Hetero-Junction Back-Contact Silicon Solar Cells by Plasma Ion Implantation
Creators: name: Koyama, K.
name: Ohdaira, K.
name: Matsumura, H.
Publisher: name: WIP
Year: 2017
Subjects: Silicon Photovoltaics
Heterojunction Solar Cells

description: 33rd European Photovoltaic Solar Energy Conference and Exhibition; 729-731
description: An interdigitated back contacted silicon heterojunction (IBC-SHJ) solar cell is one of the most
promising structures for high-efficiency solar cells. However, the patterning of back-contact electrodes causes the
increase in process steps and cost. Thus, to simplify the fabrication of IBC-SHJ solar cells, we attempted to form
interdigitated p-a-Si and n-a-Si regions by plasma ion implantation. This method aims at simplification by converting
p-a-Si to n-type. We previously reported that the conduction type of a-Si can be converted by the plasma ion
implantation of phosphorus (P) atoms into p-a-Si / i-a-Si / c-Si regions, and also that the quality of passivation can be
kept sufficiently high, the same as that before ion implantation, when the samples are annealed at around 250 °C and
also when the energy and dose of ion implantation are appropriately chosen for fitting to a-Si layer thickness and bulk
c-Si carrier density. This paper is to present the first successful results of conventional SHJ solar cells in which all na-
Si layers are formed by conversion from p-a-Si by plasma ion-implantation of P atoms.
Nitrogen-induced hysteresis in grassland biodiversity: a theoretical test of litter-mediated mechanisms
Creators: name: Meyer, Katherine
name: Broda, James
name: Brettin, Andrew
name: Muñiz, María Sánchez
name: Gorman, Sarah
name: Isbell, Forest
name: Hobbie, Sarah E.
name: Zeeman, Mary Lou
name: McGehee, Richard
Publisher: name: arXiv
Year: 2022
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences

description: The global rise in anthropogenic reactive nitrogen (N) and the negative impacts of N deposition on terrestrial plant diversity are well-documented. The R* theory of resource competition predicts reversible decreases in plant diversity in response to N loading. However, empirical evidence for the reversibility of N-induced biodiversity loss is mixed. In a long-term N-enrichment experiment in Minnesota, a low-diversity state that emerged during N addition has persisted for decades after additions ceased. Hypothesized mechanisms preventing recovery of biodiversity include nutrient recycling, insufficient external seed supply, and litter inhibition of plant growth. Here we present an ODE model that unifies these mechanisms, produces bistability at intermediate N inputs, and qualitatively matches the observed hysteresis at Cedar Creek. Key features of the model, including native species' growth advantage in low-N conditions and limitation by litter accumulation, generalize from Cedar Creek to North American grasslands. Our results suggest that effective biodiversity restoration in these systems may require management beyond reducing N inputs, such as burning, grazing, haying, and seed additions. By coupling resource competition with an additional inter-specific inhibitory process, the model also illustrates a general mechanism for bistability and hysteresis that may occur in multiple ecosystem types.
description: 24 pages, 5 figures
Evaluation of TOPCon Technology on Large Area Solar Cells
Creators: name: Feldmann, F.
name: Steinhauser, B.
name: Arya, V.
name: Büchler, A.
name: Brand, A.A.
name: Kluska, S.
name: Hermle, M.
name: Glunz, S.W.
Publisher: name: WIP
Year: 2017
Subjects: Silicon Photovoltaics
Homojunction Solar Cells

description: 33rd European Photovoltaic Solar Energy Conference and Exhibition; 465-467
description: Passivating contacts, like TOPCon or poly-Si/SiOx, have pushed the efficiency of crystalline silicon (c-Si) solar
cells notably. Currently, the world-record efficiency of 25.7% for a both-sided contact solar cell has been achieved by an n-type
solar cell featuring a selective boron front emitter and a passivating rear contact (TOPCon). Like the 25%-efficient PERL cell,
this record cell was realized on a small area of 2x2 cm² using lab processes, like photolithography and evaporation of metal
contacts. This paper addresses the first steps towards the realization of a large area TOPCon cell by industry-relevant fabrication
steps. The scope of this paper lies on the application of laser ablation and NiCu plating to a 1.5μm deep, 140 Ω/sq boron-diffused
emitter. The 10x10 cm² cell yielded an efficiency of 22.9%.
Intrinsic high electrical conductivity of stoichiometric SrNbO3 epitaxial thin films
Creators: name: Oka, Daichi
name: Hirose, Yasushi
name: Nakao, Shoichiro
name: Fukumura, Tomoteru
name: Hasegawa, Tetsuya
Publisher: name: arXiv
Year: 2015
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: SrVO3 and SrNbO3 are perovskite-type transition-metal oxides with the same d1 electronic configuration. Although SrNbO3 (4d1) has a larger d orbital than SrVO3 (3d1), the reported electrical resistivity of SrNbO3 is much higher than that of SrVO3, probably owing to nonstoichiometry. In this paper, we grew epitaxial, high-conductivity stoichiometric SrNbO3 using pulsed laser deposition. The growth temperature strongly affected the Sr/Nb ratio and the oxygen content of the films, and we obtained stoichiometric SrNbO3 at a very narrow temperature window around 630 $°$C. The stoichiometric SrNbO3 epitaxial thin films grew coherently on KTaO3 (001) substrates with high crystallinity. The room-temperature resistivity of the stoichiometric film was $2.82 {\times} 10^{-5} Ω$cm, one order of magnitude lower than the lowest reported value of SrNbO3 and comparable with that of SrVO3. We observed a T-square dependence of resistivity below $T^{\ast}$ = 180 K and non-Drude behavior in near-infrared absorption spectroscopy, attributable to the Fermi-liquid nature caused by electron correlation. Analysis of the T-square coefficient A of resistivity experimentally revealed that the 4d orbital of Nb that is larger than the 3d ones certainly contributes to the high electrical conduction of SrNbO3.
description: 7 pages, 5 figures
Evaluating lignite as a microbial inoculant carrier
Creators: name: Tran, Thi Kim Cuc
Publisher: name: Monash University
Year: 2017
Subjects: Uncategorized

description: Victoria holds a large proportion of the world's lignite resource, being generally easy to access at low cost. Interest in the use of lignite as an organic amendment is increasing because it is a rich source of humic acids and can reduce the bioavailability of heavy metals. To date, there is no information about the effect of this amendment on soil biological properties. The work presented in this thesis is based on a microcosm experiment to determine the influence of Victorian lignite on soil microbial communities and nitrogen dynamics and an incubation experiment to evaluate the use of lignite as a carrier material for beneficial microbial inoculants. In the first experiment, I added raw lignite to an agricultural soil, with or without additional N-fertiliser, and measured a number of chemical and microbial soil properties. The results indicated that the application of lignite either alone or in combination with urea had a minimal effect on the availability of inorganic nitrogen (NH/ and N03-), the microbial biomass, and the activity of three different enzymes involved in C-cycling. Shifts in the soil microbial community caused by lignite application were detected by phospholipid fatty acid analysis, and mainly occurred among microbial groups rather than as change to total microbial biomass. However, I found strong evidence that lignite addition could suppress the heterotrophic respiration and it's likely that the soil microbial community could not assimilate the organic C in lignite even with the supplementation of nitrogen fertilizer. In chapter 2 of this thesis, I present results of a study in which the use of lignite as an alternative microbial carrier in comparison with peat as a conventional carrier was explored. The physicochemical properties of lignite and peat were characterized by elemental analysis, solid-state NMR (Nuclear Magnetic Resonance) and SEM (Scanning Electron Microscopy). I found that lignite had a lower available nutrient content than commercial peat. However when the lignite was treated with 5% CaC03 and sterilized by gamma irradiation, it supported the growth and the survival of nitrogen fixing bacteria during a 3-month storage period to almost the same level as the conventional peat carrier. In addition, a glasshouse experiment showed that the addition of a lignite-based inoculants significantly increased the shoot dry weight (SDW) and root dry weight (RDW) of rice in comparison with a peat-based inoculant and untreated controls. These results confirm that lignite is a suitable carrier material for microbial inoculants used in agriculture.
Security of quantum key distribution with non-I.I.D. light sources
Creators: name: Nagamatsu, Yuichi
name: Mizutani, Akihiro
name: Ikuta, Rikizo
name: Yamamoto, Takashi
name: Imoto, Nobuyuki
name: Tamaki, Kiyoshi
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Although quantum key distribution (QKD) is theoretically secure, there is a gap between the theory and practice. In fact, real-life QKD may not be secure because component devices in QKD systems may deviate from the theoretical models assumed in security proofs. To solve this problem, it is necessary to construct the security proof under realistic assumptions on the source and measurement unit. In this paper, we prove the security of a QKD protocol under practical assumptions on the source that accommodate fluctuation of the phase and intensity modulations. As long as our assumptions hold, it does not matter at all how the phase and intensity distribute nor whether or not their distributions over different pulses are independently and identically distributed (I.I.D.). Our work shows that practical sources can be safely employed in QKD experiments.
Constructing Submicron-Texture on Diamond-Wire-Sawn Multi-Crystalline Silicon Solar Cells via Copper Catalyzed Chemical Etching
Creators: name: Su, X.
name: Zha, J.
name: Wang, T.
name: Pan, C.
name: Chen, K.
name: Hu, F.
name: Zou, S.
Publisher: name: WIP
Year: 2017
Subjects: Silicon Photovoltaics
Homojunction Solar Cells

description: 33rd European Photovoltaic Solar Energy Conference and Exhibition; 388-390
description: Mass production of diamond-wire-sawn multi-crystalline silicon (DWS mc-Si) solar cells reach a
tipping point with the maturement of metal catalyzed chemical etching (MCCE) technique. However, nano-textured
DWS mc-Si solar cells based on Ag-MCCE still suffer from the certain saw-mark remains and the color differences
among grains, and also slightly decrease of open-circuit voltage (Voc). Unoriented etching of Cu-MCCE not only
depress the saw marks and the color differences, but also result in random shallow pits, which acted as artificial
defects to be easily converted into a submicron-texture by using a conventional HNO3/HF etching. For the first time,
we demonstrate that the efficiency of DWS mc-Si solar cells with Cu-MCCE process is over 19%, especially with
improved Voc due to better surface passivation. Thereby, cost-effective Cu-MCCE is of great potential in PV
industry.
Pfaffian invariant identifies magnetic obstructed atomic insulators
Creators: name: Day, Isidora Araya
name: Varentcova, Anastasiia
name: Varjas, Daniel
name: Akhmerov, Anton R.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We derive a $\mathbb{Z}_4$ topological invariant that extends beyond symmetry eigenvalues and Wilson loops and classifies two-dimensional insulators with a $C_4 \mathcal{T}$ symmetry. To formulate this invariant, we consider an irreducible Brillouin zone and constrain the spectrum of the open Wilson lines that compose its boundary. We fix the gauge ambiguity of the Wilson lines by using the Pfaffian at high symmetry momenta. As a result, we distinguish the four $C_4 \mathcal{T}$-protected atomic insulators, each of which is adiabatically connected to a different atomic limit. We establish the correspondence between the invariant and the obstructed phases by constructing both the atomic limit Hamiltonians and a $C_4 \mathcal{T}$-symmetric model that interpolates between them. The phase diagram shows that $C_4 \mathcal{T}$ insulators allow $\pm 1$ and $2$ changes of the invariant, where the latter is overlooked by symmetry indicators.
description: 9 pages, 5 figures
Envelope Hamiltonian for Charged-Particle Dynamics in General Linear Coupled Systems
Creators: name: Chung, Moses
name: Qin, Hong
name: Davidson, Ronald C.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: We report the discovery of an envelope Hamiltonian describing the charged-particle dynamics in general linear coupled lattices.
The assembly of ruthenium-upconverting nanoparticle systems for cancer imaging and therapy
Creators: name: Gazukin, Olga
Publisher: name: Monash University
Year: 2017
Subjects: Uncategorized

description: This thesis examines the development of synthetic methods to attach anti-cancer agents onto the surface of nanoparticles. The established method has great future potential as it allows the incorporation of a wide variety of molecules and could ultimately lead to the development of more effective cancer therapeutic agents.
Approaching 22% Efficiency with Multicrystalline n-Type Silicon Solar Cells
Creators: name: Benick, J.
name: Müller, R.
name: Schindler, F.
name: Richter, A.
name: Hauser, H.
name: Feldmann, F.
name: Krenckel, P.
name: Riepe, S.
name: Schubert, M.C.
name: Hermle, M.
name: Glunz, S.W.
Publisher: name: WIP
Year: 2017
Subjects: Silicon Photovoltaics
Homojunction Solar Cells

description: 33rd European Photovoltaic Solar Energy Conference and Exhibition; 460-464
description: The transition to seed assisted growth (high-performance multicrystalline silicon) significantly
enhanced the quality of multicrystalline silicon. Combining the new growth technique with the inherent benefits of
n-type doping results in a multicrystalline material which should be well suited for the fabrication of high-efficiency
solar cells. In this work high-efficiency solar cells with passivating rear contact were fabricated on n-type highperformance
multicrystalline silicon, crystallized at Fraunhofer ISE. The material features a high diffusion length
>800 μm after application of all high temperature process steps needed for cell fabrication. Applying a black-silicon
texture at the font resulted in a weighted reflectance of 1%, maintaining a good emitter passivation with
J0 ≤ 60 fA/cm2 for a 90 Ω/sq emitter. For the resulting n-type multicrystalline silicon solar cells conversion
efficiencies up to 22.3% were reached, representing the current record for multicrystalline silicon solar cells.
Pathways for Observing Stellar Surfaces Using 3D Hydrodynamical Simulations of Evolved Stars
Creators: name: Chiavassa, A.
name: Freytag, B.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Evolved stars are among the largest and brightest stars and they are ideal targets for the new generation of sensitive, high resolution instrumentation that provides spectrophotometric, interferometric, astrometric, and imaging observables. The interpretation of the complex stellar surface images requires numerical simulations of stellar convection that take into account multi-dimensional time-dependent radiation hydrodynamics with realistic input physics. We show how the evolved star simulations are obtained using the radiative hydrodynamics code CO5BOLD and how the accurate observables are computed with the post-processing radiative transfer code Optim3D. The synergy between observations and theoretical work is supported by a proper and quantitative analysis using these simulations, and by strong constraints from the observational side.
description: 4 pages, proceedings of the conference: "The Physics of Evolved Stars: A Conference Dedicated to the Memory of Olivier Chesneau", EAS Publications Series, 71-72, pages 237-242. arXiv admin note: text overlap with arXiv:1410.3868
Pilot Production of High Efficient Metal Catalyzed Textured Diamond Wire Sawn Mc-Si Solar Cells Combined with Nickel-Copper Plated Front Contact Processing
Creators: name: Fox, S.
name: Jie, X.
name: Wu, H.
name: Burschik, J.
name: Bay, N.
name: Crouse, K.
name: Kühnlein, H.
name: Lee, B.
name: Letize, A.
name: Passig, M.
name: Pysch, D.
name: Sieber, M.
name: Vosteen, K.
Publisher: name: WIP
Year: 2017
Subjects: Silicon Photovoltaics
Manufacturing & Production

description: 33rd European Photovoltaic Solar Energy Conference and Exhibition; 362-367
description: This paper presents results of combining two promising future technologies: i) metal catalyzed
textured (MCT) diamond-wire sawn (DWS) mc-Si wafers and ii) nickel-copper-silver (Ni/Cu/Ag) plated
front contact processing. Results of optimizations of laser patterning, annealing and module string soldering
are presented. Several 60-cell module with a power output of around 270 W were made, followed by
subsequent module reliability testing. All module tests have been passed within the existing boundaries.
Pseudo fill-factor (pFF) and open circuit voltage Voc have been identified as the parameters with the highest
potential for further improvements. First successful results of plating-emitter development on a MCT-surface
are presented.
Some studies on foetal calf cartilage
Creators: name: Leyden, Kathleen.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Screen-Printed Metallization for p-Type Poly-Si Passivated Contacts Formed by LPCVD
Creators: name: Mack, S.
name: Fellmeth, T.
name: Schube, J.
name: Feldmann, F.
name: Lenes, M.
name: Luchies, J.R.M.
Publisher: name: WIP
Year: 2017
Subjects: Silicon Photovoltaics
Homojunction Solar Cells

description: 33rd European Photovoltaic Solar Energy Conference and Exhibition; 468-471
description: We report on the metallization on passivating contacts by screen-printed metal pastes. The passivating
contact consists of a thermal SiOx layer of 1 to 2 nm thickness, in combination with an in-situ boron doped low
pressure chemical vapor deposited polysilicon layer of 300 nm thickness. After thermal annealing, SiNx deposition
and contact firing, we find extremely low dark saturation current densities down to 1 fA/cm2. Using a commercially
available high temperature fire through Ag paste, which is applied by conventional screen printing technology, we
achieve a specific contact resistance c = 2 mΩcm2. This makes the application interesting as rear side contact of
industrial type high-efficiency p-type solar cells.
Multi-qubit entanglement in bi-directional chiral waveguide QED
Creators: name: Mirza, Imran M.
name: Schotland, John C.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the generation of entanglement induced by a single-photon Gaussian wavepacket in multi-atom bi-directional waveguide QED. In particular, we investigate the effect of increasing the number of atoms on the average pairwise entanglement. We demonstrate by selecting smaller decay rates and in chiral waveguide settings, that both entanglement survival times and maximum generated entanglement can be increased by at least a factor of 3/2, independent of the number of atoms. In addition, we analyze the influence of detuning and delays on the robustness of the generated entanglement. There are potential applications of our results in entanglement based multi-qubit quantum networks
description: 10 pages, 5 figures
A MUSE view of the massive merging galaxy cluster ACT-CL J0102-4915 (El Gordo) at z = 0.87: robust strong lensing model and data release
Creators: name: Caminha, G. B.
name: Grillo, C.
name: Rosati, P.
name: Liu, A.
name: Acebron, A.
name: Bergamini, P.
name: Caputi, K. I.
name: Mercurio, A.
name: Tozzi, P.
name: Vanzella, E.
name: Demarco, R.
name: Frye, B.
name: Rosani, G.
name: Sharon, K.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a detailed strong lensing analysis of the massive and distant ($z=0.870$) galaxy cluster ACT-CL J0102$-$4915 (ACT0102, also known as El Gordo), taking advantage of new spectroscopic data from the Multi Unit Spectroscopic Explorer (MUSE) on the Very Large Telescope, and archival imaging from the Hubble Space Telescope. Thanks to the MUSE data, we measure secure redshifts for 374 single objects, including 23 multiply lensed galaxies, and 167 cluster members of ACT0102. The observed positions of 56 multiple images, along with their new spectroscopic redshift measurements, are used as constraints for our strong lensing model. Remarkably, some multiple images are detected out to a large projected distance of $\approx 1$ Mpc from the brightest cluster galaxy, allowing us to estimate a projected total mass value of $1.84_{-0.04}^{+0.03} \times 10^{15}\, \rm M_{\odot}$ within that radius. We find that we need two extended cluster mass components, the mass contributions from the cluster members and the additional lensing effect of a foreground ($z=0.633$) group of galaxies, to predict the positions of all multiple images with a root mean square offset of $0.75"$. The main cluster-scale mass component is centered very closely to the brightest cluster galaxy and the other extended mass component is located in the north-west region of the cluster. These two mass components have very similar values of mass projected within 300 kpc from their centers, namely $2.29_{-0.10}^{+0.09}\times10^{14}\,\rm M_{\odot}$ and $2.10_{-0.09}^{+0.08}\times10^{14}\,\rm M_{\odot}$, in agreement with the major merging scenario of ACT0102. We make publicly available the lens model, including the magnification maps and posterior distributions of the model parameter values, as well as the full spectroscopic catalogue containing all redshift measurements obtained with MUSE.
description: 12 pages, 9 figures, 4 tables + appendix. Minor changes, A&A in press. MUSE redshift catalogue and lens model are publicly available
Cell-to-Module Conversion Loss Simulation for Shingled-Cell Concept
Creators: name: Rabanal-Arabach, J.
name: Rudolph, D.
name: Ullmann, I.
name: Halm, A.
name: Schneider, A.
name: Fischer, T.
Publisher: name: WIP
Year: 2017
Subjects: New Materials and Concepts for Photovoltaic Devices
New Materials and Concepts for Cells and Modules

description: 33rd European Photovoltaic Solar Energy Conference and Exhibition; 178-182
description: The “shingled solar cell interconnection concept” for c-Si solar cells has been investigated since more than 26 years [1]. Since 2013, several articles about high voltage module applications have been published with main focus on accelerated aging tests, showing promising results [2-4]. The present work focuses on a theoretical study carried out to carefully determine the cell-to-module losses based on experimentally embedded stripes of commercial
c-Si solar cells (originally 6-inch, full square Al-BSF) into a module interconnected by the shingled-cell concept. Results show an acceptable cell-to-module calculation accuracy. The simulated active area efficiency is up to 3%rel higher than for a module made out of traditional front-to-back cell-to-cell interconnection. By splitting a cell in five stripes (S 1/5 concept), the FF improves in average by 2%abs mainly due to lower resistance loss hence lower
electrical power loss compared to a module made of 5 busbar solar cells connected by the traditional front-to-back interconnection concept (S 1/5 REF in the article).