cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Quantum Dot Luminescent Solar Concentrator: Optimization of Concentration and Thickness
Creators: name: Rafiee, M.
name: Chandra, S.
name: Ahmed, H.
name: McCormack, S.J.
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; 128-132
description: The absorption coefficient of a Luminescent Solar Concentrator (LSC) can non-linearly affect the total optical efficiency (opt) and solar concentration ratio (CP) of the device. Absorption is determined by two critical design parameters; the concentration of the luminescent material and the thickness of LSC plate. This paper presents a theoretical approach using a mathematical model based on a Ray Tracing algorithm to optimize these parameters to obtain the best LSC configuration design. A 60 × 60 × 3 mm LSC of CdSe/ZnS quantum dots (QDs) doped in epoxy resin was modelled and the model results were validated by comparing them to experimental results. To achieve the
optimum thickness and luminescent material concentration of the LSC, a sensitivity analysis was carried out to predict
the behavior of the LSC under different solar radiation. The LSC optical efficiency under standard AM1.5 global solar radiation was found to have reached a maximum (3.6%) at QD concentration of 0.55 wt%. Above this concentration, the optical efficiency was found to decrease due to re-absorption losses. Then, the thickness of the LSC was varied from 0.5 to 30 mm while the QD concentration was kept constant at the optimum (i.e. 0.55 wt%). Under these circumstances, the total optical efficiency has been observed to increase from 1.2% to 13.2% while the CP was significantly decreased from 1.19 to 0.22 due to a decrease in the geometric gain.
Challenges in Design of Kitaev Materials: Magnetic Interactions from Competing Energy Scales
Creators: name: Winter, Stephen M.
name: Li, Ying
name: Jeschke, Harald O.
name: Valenti, Roser
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In this study, we reanalyze the magnetic interactions in the Kitaev spin liquid candidate materials Na$_2$IrO$_3$, $α$-RuCl$_3$, and $α$-Li$_2$IrO$_3$ using nonperturbative exact diagonalization methods. These methods are more appropriate given the relatively itinerant nature of the systems suggested in previous works. We treat all interactions up to third neighbours on equal footing. The computed terms reveal significant long range coupling, bond-anisotropy, and/or off-diagonal couplings which we argue naturally explain the observed ordered phases in these systems. Given these observations, the potential for realizing the spin-liquid state in real materials is analyzed, and synthetic challenges are defined and explained.
Reconstructing Photoluminescence Spectra at Liquid Nitrogen Temperature from Heavily Boron Doped Regions of Crystalline Silicon Solar Cells
Creators: name: Wu, H.
name: Nguyen, H.T.
name: Liu, A.
name: Macdonald, D.
Publisher: name: WIP
Year: 2017
Subjects: Silicon Photovoltaics
Characterisation & Simulation Methods

description: 33rd European Photovoltaic Solar Energy Conference and Exhibition; 226-237
description: When measured at low temperature (79K), the photoluminescence (PL) spectra from silicon wafers
containing a diffused heavily-doped layer exhibit a second peak due to band gap narrowing in the diffused region. This
work aims to decompose this peak into components arising from the various doping concentrations within the diffused
layer. While the peak position of silicon band-to-band PL spectra changes significantly with the doping concentration in
silicon, the shape of the spectra also varies strongly with doping concentrations due to the broadening effects of bandfilling
and band-tail states. By measuring PL spectra on a range of uniformly heavily doped wafers, we show that these
changes in spectral position and shape can be accurately modelled for doping concentrations above 1*10^19 cm-3 using simple parameterisations, with minimal impact of variations in excitation intensity or injection level.
This allows the PL spectra for a range of arbitrary doping concentrations to be reconstructed. We then show that the PL
spectra from a thermally boron-diffused wafer, in which the boron concentration changes with depth, can be
reconstructed based on a superposition of PL spectra arising from the layers of different doping beneath the surface.
Furthermore, the scaling factor for each layer can be accurately estimated based on the doping profile and the fraction of
incident light absorbed in the layer.
Perturbative Approach to Superfluidity under Nonuniform Potential
Creators: name: Koshida, Shinji
name: Kato, Yusuke
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: A perturbative way to investigate superfluid properties of various systems under nonuniform potential is presented. We derive the perturbation expansion of the superfluid fraction, which indicates how liquid exhibits nonclassical rotational inertia, in terms of the strength of nonuniform potential and find that the coefficient of the leading term reflects the density fluctuation of the system. Our formulation does not assume anything about Bose-Einstein condensation and thus is applicable to wide variety of systems. Superfluid properties of some examples including (non-)interacting Bose systems, especially Bose gas in the mean field limit, (non-)interacting Fermi sytems, Tomonaga-Luttinger liquid and spinless chiral $p$-wave superfluid are investigated.
description: 12 pages, 1 figure
Temperature Effect on the Capacitance of the Bifacial Solar Cell Considering the Columnar Cylindrical Orientation
Creators: name: Leye, S.N.
name: Diouf, A.
name: Diao, A.
name: Mbodji, S.
name: Sissoko, G.
Publisher: name: WIP
Year: 2017
Subjects: New Materials and Concepts for Photovoltaic Devices
Fundamental Studies

description: 33rd European Photovoltaic Solar Energy Conference and Exhibition; 78-81
description: In this paper, temperature’s effect on the transient capacitance’s new expression of the bifacial solar cell, considering the cylindrical model of the grains tis proposed. The temperature effects are verified and it is noted that the transient capacitance decreases with temperature.
A Fuzzy MLP Approach for Non-linear Pattern Classification
Creators: name: Dash, Tirtharaj
name: Behera, H. S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: In case of decision making problems, classification of pattern is a complex and crucial task. Pattern classification using multilayer perceptron (MLP) trained with back propagation learning becomes much complex with increase in number of layers, number of nodes and number of epochs and ultimate increases computational time [31]. In this paper, an attempt has been made to use fuzzy MLP and its learning algorithm for pattern classification. The time and space complexities of the algorithm have been analyzed. A training performance comparison has been carried out between MLP and the proposed fuzzy-MLP model by considering six cases. Results are noted against different learning rates ranging from 0 to 1. A new performance evaluation factor 'convergence gain' has been introduced. It is observed that the number of epochs drastically reduced and performance increased compared to MLP. The average and minimum gain has been found to be 93% and 75% respectively. The best gain is found to be 95% and is obtained by setting the learning rate to 0.55.
description: The final version of this paper has been published in "International Conference on Communication and Computing (ICC-2014)" [http://www.elsevierst.com/conference_book_download_chapter.php?cbid=86#chapter41]
Thermal Stability of Novel Hole-Selective Contacts for Silicon Wafer Solar Cells
Creators: name: Lee, C.-Y.
name: Zhang, T.
name: Khoo, K.
name: Abdallah, A.
name: Rashkeev, S.
name: Tabet, N.
name: Hoex, B.
Publisher: name: WIP
Year: 2017
Subjects: Silicon Photovoltaics
Heterojunction Solar Cells

description: 33rd European Photovoltaic Solar Energy Conference and Exhibition; 353-357
description: The thermal stability of novel hole selective contacts is of key importance when integrating these films into highefficiency
silicon solar cells. In this work, we focus on the thermal stability of atomic layer deposited (ALD) WOx with
and without an a-Si:H interface passivation layer. Hydrogen diffusion from a-Si:H to WOx layer was detected by both
Fourier transform infrared spectroscopy and in-situ ultraviolet photoelectron spectroscopy for annealing temperatures
above 180 oC. The work function decreased for higher annealing temperatures, but the decrease was slightly less for
the samples with the a-Si:H interface passivation layer due to the H doping of WOx. An annealing temperature higher
than 223 ºC results in insufficient workfunction for hole selectivity. In terms of surface passivation, it was found that
the plasma-enhanced ALD of WOx introduced some plasma damage on the a-Si:H layer as was detected by injectiondependent
effective lifetime measurement. Fortunately, this could be recovered by an annealing treatment at 220 ºC,
resulting in an implied VOC of 730 mV. The results provide a promising potential of the implementation on ALD WOx
for high-efficiency silicon solar cells.
Phase Transfer and Polymer Compatibility of Gold and Gold Core Silver Shell Nanorods for Luminescent Solar Devices
Creators: name: Sethi, A.
name: Chandra, S.
name: Ahmed, H.
name: Gilligan, S.
name: McCormack, S.J.
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; 167-171
description: Luminescent solar concentrator (LSC) device is based on energy down shifting phenomenon with a primary
goal of trapping and guiding light via total internal reflection. The trapped light propagates and is concentrated at the edge
where photovoltaic cells absorb and convert it to electricity. Luminescent Down shifting (LDS) devices are a special case
of LSC where geometric gain is unity with its main function to improve the spectral response of the photovoltaic cells in
short wavelength solar radiation. Low quantum efficiencies of luminescent species have limited the optical efficiency of
the aforementioned devices. Plasmonic properties of metal nanoparticles (MNPs) such as gold (Au) and silver (Ag)
nanorods can be used for the enhancement of fluorescence of quantum dots, rare earth complexes and organic dyes in LSC
and LDS devices. Au Nanorods (NRs) were synthesized using the seed mediated wet chemical process, with CTAB
(hexadecyltrimethylammonium bromide) as the capping agent. To make use of localized plasmonic resonances due to
silver, (Au) core (Ag) shell NRs also labelled as Au_Ag NRs were fabricated using the synthesized Au nanorods as seeds
and Silver Nitrate (AgNO3) as the precursor. The nanorods obtained have a high shape yield. Purification and separation
of NRs from the by-products was performed by multiple centrifugation steps. Functionalization of the nanorods was done
at room temperature using thiolated PEG molecule. Thiol group has a stronger affinity for Au/Ag surface than the surfactant
and binds to the ends of the NRs. Phase transfer to chloroform was successfully carried out for Au and Au_Ag NRs in
which methanol acts as a phase transfer agent. Nanorods in organic solvent were stable for more than a month.
Compatibility of Au NRs with PMMA and silicone polymer encapsulate was investigated.
Human performance in pap smear screening
Creators: name: Browning, Colette .
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.
Optical properties of an atomic ensemble coupled to a band edge of a photonic crystal waveguide
Creators: name: Munro, Ewan
name: Kwek, Leong Chuan
name: Chang, Darrick E.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the optical properties of an ensemble of two-level atoms coupled to a 1D photonic crystal waveguide (PCW), which mediates long-range coherent dipole-dipole interactions between the atoms. We show that the long-range interactions can dramatically alter the linear and nonlinear optical behavior, as compared to a typical atomic ensemble. In particular, in the linear regime, we find that the transmission spectrum reveals multiple transmission dips, whose properties we show how to characterize. In the many-photon regime the system response can be highly non-linear, and under certain circumstances the ensemble can behave like a single two-level system, which is only capable of absorbing and emitting a single excitation at a time. Our results are of direct relevance to atom-PCW experiments that should soon be realizable.
Workshop on FAIR Metrics in Engineering Sciences: Workshop Outcome
Creators: name: Moser, Mario
Publisher: name: Zenodo
Year: 2023
Subjects: FAIR
FAIR Metrics
FAIR Data Management
Engineering Sciences
RDM
Research Data Management
FDM
Foschungsdatenmanagement

description: Outcome of a Workshop at the NFDI4Ing Conference 2023 Workshop on how a FAIR Metric (or: FAIR implementation) for the Engineering Sciences might be designed. The related presentation is published at 10.5281/zenodo.8382740. This content has been collected and discussed during the workshop, but has not been analysed yet. Therefore the attached pdf documents show the 'raw output'. Regarding Frames 3 - 6 ("F", "A", "I", "R"): Red sticker indicate general elements independent of a domain; blue is domain-specific for the engineering sciences.
description: The authors would like to thank the Federal Government and the Heads of Government of the Länder, as well as the Joint Science Conference (GWK), for their funding and support within the framework of the NFDI4Ing consortium. Funded by the German Research Foundation (DFG) - project number 442146713
IAM in der Nationalen Forschungsdateninfrastruktur (NFDI)
Creators: name: Politze, Marius
Publisher: name: Zenodo
Year: 2023

description: A brief overview of supporting basic structures of the NFDI to drive Identity and Access Management and the IAM WG within the NFDI section Common Infrastructures
description: NFDI4Ing and Base4NFDI are funded as part of the National Research Data Infrastructure (NFDI) following a recommendation of the German Joint Science Conference (GWK). The funding is provided by the Federal Government and the Heads of Government of the Länder and managed by the German Research Foundation (DFG) - project numbers 442146713, 521453681, 521460392, 521462155, 521463400, 521466146, 521471126, 521473512, 521474032, 521475185, 521476232
Renormalization formalism for superconducting phase transition with inner-Cooper-pair dynamics
Creators: name: Su, Yuehua
name: Wu, Hongyun
name: Cao, Kun
name: Zhang, Chao
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: As charge carrier of the macroscopic superconductivity, the Cooper pair is a composite particle of two paired electrons, which has both center-of-mass and inner-pair degrees of freedom. In most cases, these two different degrees of freedom can be well described by the macroscopic Ginzburg-Landau theory and the microscopic Bardeen-Cooper-Schrieffer (BCS) theory, respectively. Near the superconducting phase transition where the Cooper pair is fragile and unstable because of the small binding energy, there are non-trivial couplings between these two different degrees of freedom due to such as finite energy and/or momentum transfer. The non-trivial couplings make the original derivation of the Ginzburg-Landau theory from the BCS theory fail in principle as where these two different degrees of freedom should not be decoupled. In this article, we will present a renormalization formalism for an extended Ginzburg-Landau action for the superconducting phase transition where there is finite energy transfer between the center-of-mass and the inner-pair degrees of freedom of Cooper pairs. This renormalization formalism will provide a theoretical tool to study the unusual dynamical effects of the inner-pair time-retarded physics on the superconducting phase transition.
description: 11 pages, 4 figures; Revised version for publication
Radiation drag on the accretion disc in type-I X-ray bursts
Creators: name: Worpel, Hauke
Publisher: name: Monash University
Year: 2017
Subjects: Uncategorized

description: Type I X-ray bursts on accreting neutron stars offer a means to probe the interior of these stars by providing information about the conditions at its surface, via the measurement of radius and surface gravitational redshift. Our understanding has been hampered by difficulties in finding spectral models that adequately describe the spectra, in part because we do not properly understand how the burst luminosity influences the structure of the disc and the properties of the accretion flow. I have used archival Rossi X-ray Timing Explorer data to perform spectral analyses of 1,759 bursts from 56 sources. I investigated the effect of allowing the pre-burst persistent emission to vary with time, while holding its spectral shape fixed. I found that an increase in the intensity, to several times its pre-burst level, significantly improves the quality of the spectral fits. This increase cannot be attributed to changes in the shape of either the burst or the persistent components. One possible interpretation of these results is a temporary increase in accretion rate, possibly as a consequence of radiation drag on the disc. I have shown that the magnitude of the persistent flux increase is consistent with the results of earlier computer simulations. I further test this hypothesis using smoothed particle hydrodynamics (SPH) computer simulations of an irradiated accretion disc. The simulations evolve the Navier-Stokes equations with an extra velocity-dependent force representing radiation drag. I test the effect of partial self-shading of the disc by devising four methods for propagating radiation within it. The results suggest that large accretion enhancements are possible provided that angular momentum loss can be efficiently communicated to the interior of the disc.
title: European Journal of Creative Practices in Cities and Landscapes, Vol 2, No 2 (2019): The New Spaces of the Common: Spatial and Political Models of Making
title: The New Spaces of the Common: Spatial and Political Models of Making
titleType: AlternativeTitle
Creators: name: European Journal Of Creative Practices In Cities And Landscapes
Publisher: name: European Journal of Creative Practices in Cities and Landscapes
Year: 2020

description: Edited by Manola Antonioli
description: Where Is Berlin? Cultural Commons and Urban Policy Among Real and Virtual Walls...151-174 A Makerspace Network as Part of a Regional Innovation Ecosystem, the Case of Emilia-Romagna...83-103 Public libraries and “Making.” Experiences in the Netherlands...185-200 Making with Repurpose: Finding Architectural Value between Waste and Landfill...105-120 Collaboration at New Places of Production: a European View on Procedural Policy Making for Maker Spaces...63-81 First Exploratory Geographical and Social Maps of the Maker Movement...35-62 Traces for an Idea of Project: Discussing the Contribution of Richard Sennett, Tim Ingold and Bruno Latour...19-33 Mapping Uses, People and Places: Towards a Counter-Cartography of Commoning Practices and Spaces for Commons. A Case Study in Pavia, Italy...121-150 The New Role of Libraries: Places for All...175-184 Of Work and Words: Craft as a Way of Telling...5-17 The New Spaces of the Common: Spatial and Political Models of "Making"...1-4
Surface water - groundwater interactions in an upland catchment
Creators: name: Atkinson, Alexander
Publisher: name: Monash University
Year: 2017
Subjects: Uncategorized

description: The upland area of the Gellibrand River encompasses the upper catchment (where perennial headwater streams drain native eucalypt rainforest underlain by bedrock) and the upland plain (where the river winds through an alluvial floodplain that has been predominantly cleared for agriculture). This thesis focuses on a number of aspects concerning surface water - groundwater interactions in this part of the catchment, namely: (1) the temporal and spatial variation of groundwater influxes into the Gellibrand River (2) the residence times of groundwater in the upland plain (3) the importance of recharge via direct precipitation and river water infiltration on the upland plain and (4) the sources of water and residence times of water draining the upper catchment of the Gellibrand River. These processes are investigated using environmental tracers in combination with water level monitoring and stream discharge data. The Gellibrand River is gaining throughout the year with groundwater inflows accounting for between 10 and 50% of river flow. Groundwater residence times in the upland plain determined by 14C measurements are between 100 and 10,000 years with groundwater originating from the regional recharge zone, the Barongarook High. Regional discharge of groundwater from the Barongarook High in the upland plain limits the depth to which local recharge infiltrates and additionally, the river does not recharge local groundwater even during high discharge events. The upper catchment contributes significant amounts of water to the Gellibrand River, especially during rainfall events. This is attributed to rapid preferential flow through soil pipes which drain soil water on hillslopes, with little contribution from the Riparian Zone. Mean residence times of a first order stream (Barramunga River) and the upper Gellibrand River are between 6 and 16 years with the application of 3H providing the first age estimates of water draining headwater catchments in Australia. The process understanding gained and use of environmental tracers throughout the thesis can be applied to catchments worldwide.
Blocklength-Limited Performance of Relaying under Quasi-Static Rayleigh Channels
Creators: name: Hu, Yulin
name: Schmeink, Anke
name: Gross, James
Publisher: name: arXiv
Year: 2016
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In this paper, the blocklength-limited performance of a relaying system is studied, where channels are assumed to experience quasi-static Rayleigh fading while at the same time only the average channel state information (CSI) is available at the source. Both the physical-layer performance (blocklength-limited throughput) and the link-layer performance (effective capacity) of the relaying system are investigated. We propose a simple system operation by introducing a factor based on which we weight the average CSI and let the source determine the coding rate accordingly. In particular, we prove that both the blocklength-limited throughput and the effective capacity are quasi-concave in the weight factor. Through numerical investigations, we show the appropriateness of our theoretical model. In addition, we observe that relaying is more efficient than direct transmission. Moreover, this performance advantage of relaying under the average CSI scenario is more significant than under the perfect CSI scenario. Finally, the speed of convergence (between the blocklength-limited performance and the performance in the Shannon capacity regime) in relaying system is faster in comparison to the direct transmission under both the average CSI scenario and the perfect CSI scenario.
description: 12 figures, submitted to IEEE Transactions on Wireless Communications
On the Determination of the Contact Resistivity for Passivating Contacts Using 3D Simulations
Creators: name: Kökbudak, G.
name: Müller, R.
name: Feldmann, F.
name: Fell, A.
name: Turan, R.
name: Glunz, S.W.
Publisher: name: WIP
Year: 2017
Subjects: Silicon Photovoltaics
Characterisation & Simulation Methods

description: 33rd European Photovoltaic Solar Energy Conference and Exhibition; 242-246
description: Besides surface passivation, a low contact resistivity is one of the most important requirements of
passivating contacts in order to achieve good carrier selectivity. In this work, different methods to determine the
contact resistivity were performed and compared using a passivating contact structure consisting of poly silicon on a
thin silicon oxide. As the traditional 1D Transmission Line Model (TLM) includes many assumptions that are not
valid for complicated structures and even the application of the analytical 2D TLM is limited, especially for very low
contact resistivity values, 3D numerical simulations with Quokka3 were carried out to accurately model passivating
contact structures and determine the contact resistivity by comparison to electrical measurements. The investigated
sample showed both, good passivation quality with implied open-circuit voltage iVoc of 716 mV together with a low
specific contact resistivity of 0.21 mΩ·cm2 as extracted from the numerical simulations. Using our method, it is
possible to distinguish the sources of the contact resistivity. A fraction of 0.11 mΩ·cm2 could be attributed to the
interface between metal & poly-Si layer and 0.10 mΩ·cm2 results from the interface between poly-Si layer & bulk.
Effect of Cu Deficiency on the Optical Properties of Dual Ion Beam Sputtered CZTSSe Thin Film
Creators: name: Sengar, B.S.
name: Garg, V.
name: Awasthi, V.
name: Kumar, S.
name: Mukherjee, S.
Publisher: name: WIP
Year: 2017
Subjects: New Materials and Concepts for Photovoltaic Devices
Fundamental Studies

description: 33rd European Photovoltaic Solar Energy Conference and Exhibition; 93-95
description: The near-surface region of thin-film polycrystalline CZTSSe is considered influential because it is the region where the electrical junction forms in a CZTSSe photovoltaic device. Spectroscopic Ellipsometry measurements of polycrystalline CZTSSe films reveal that there is a thin layer at the surface which has different optical and electronic properties from those of the bulk film. This surface layer of thin-film CZTSSe has a larger bandgap. These properties indicate that the surface layer is more Cu deficient than the bulk in the nearly stoichiometric thin-film CZTSSe used in
photovoltaic devices. Cu deficiency at the surface is also confirmed by using x-ray photoelectron spectroscopy (XPS). This work provides an insight into the importance of surface layer engineering for photovoltaic device design.
Growth of Oxygen Precipitates and Dislocations in Cz Silicon: Impact on Minority Carrier Lifetime
Creators: name: Rougieux, F.E.
name: Nguyen, H.T.
name: Macdonald, D.
name: Mitchell, B.
name: Falster, R.
Publisher: name: WIP
Year: 2017
Subjects: Silicon Photovoltaics
Feedstock, Crystallisation, Wafering, Defect Engineering

description: 33rd European Photovoltaic Solar Energy Conference and Exhibition; 325-327
description: The impact of point defect created during ingot growth and Tabula Rasa on the growth of oxygen
precipitates is investigated. We show that both point defect from ingot growth and point defect from Tabula Rasa
affect the growth of oxygen precipitates during solar cell processing. We show that the vacancy concentration during
precipitate growth affects the recombination activity of oxygen precipitates. Finally, we demonstrate the impact of
non-equilibrium point defect concentrations on dislocation growth.
Effect of magnetic field on a magnetic topological insulator film with structural inversion asymmetry
Creators: name: Zhang, Shu-feng
name: Jiang, Hua
name: Xie, X. C.
name: Sun, Qing-feng
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The effect of magnetic field on an ultrathin magnetic topological insulator film with structural inversion asymmetry is investigated. We introduce the phase diagram, calculate the Landau-level spectrum analytically and simulate the transport behavior in Landauer-Büttiker formalism. The quantum anomalous Hall phase will survive increasing magnetic field. Due to the two spin polarized zero modes of Landau levels a nontrivial phase similar with quantum spin Hall effect can be induced by magnetic field which is protected by structural inversion symmetry. Some exotic longitudinal and Hall resistance plateaus with fractional values are also found in a six terminal Hall bar, arising from the coupling between edge states due to inverted energy band and Landau levels.
Benchmarking Mechanical Strength Data for New Solar Cell Concepts
Creators: name: Kaule, F.
name: Meyer, S.
name: Schoenfelder, S.
Publisher: name: WIP
Year: 2017
Subjects: Silicon Photovoltaics
Characterisation & Simulation Methods

description: 33rd European Photovoltaic Solar Energy Conference and Exhibition; 276-279
description: Unlike the efficiency of the solar cell, the mechanical strength is not a key parameter for solar cell and
module manufacture, yet. Though, it is known that the metallization reduces the mechanical strength after texturization.
But no systematic comparison between different cell types was performed so far in literature. In this work, a mechanical
benchmark test for 10 different solar cells from 6 different manufacturers with 1525 cells is presented. Significant
differences in the probability of failure were found depending on the individual cell process. The presented test
procedures are powerful tools to identify the most damaging process steps and to increase the yield during cell and
module manufacturing.
Collapsing the cardinals of $HOD$
Creators: name: Cummings, James
name: Friedman, Sy David
name: Golshani, Mohammad
Publisher: name: arXiv
Year: 2016
Subjects: subject: Logic (math.LO)
subject: FOS: Mathematics

description: Assuming that $GCH$ holds and $κ$ is $κ^{+3}$-supercompact, we construct a generic extension $W$ of $V$ in which $κ$ remains strongly inaccessible and $(α^+)^{HOD} < α^+$ for every infinite cardinal $α< κ$. In particular the rank-initial segment $W_κ$ is a model of ZFC in which $(α^+)^{HOD} < α^+$ for every infinite cardinal $α$.
Driving task demand and peripheral visual detections:
Creators: name: Lee, Peter N. J.
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.
Record-Breaking Efficiency Back-Contact Heterojunction Crystalline Si Solar Cell and Module
Creators: name: Yamamoto, K.
name: Adachi, D.
name: Yoshikawa, K.
name: Yoshida, W.
name: Irie, T.
name: Konishi, K.
name: Fujimoto, T.
name: Kawasaki, H.
name: Kanematsu, M.
name: Ishibashi, H.
name: Uto, T.
name: Takahashi, Y.
name: Terashita, T.
name: Koizumi, G.
name: Nakanishi, N.
name: Yoshimi, M.
Publisher: name: WIP
Year: 2017
Subjects: Silicon Photovoltaics
Heterojunction Solar Cells

description: 33rd European Photovoltaic Solar Energy Conference and Exhibition; 201-204
description: Record-breaking efficiencies of crystalline Si (c-
Si) solar cell (26.33%) and module (24.37%) using a backcontact
heterojunction (BCHJ) technology are reported.
Utilizing our surface passivation technology of c-Si by
amorphous Si and metallization technology, we have achieved
the record-breaking conversion efficiencies in the c-Si solar cell
and module. Energy loss analysis of the 26.33% BCHJ c-Si
solar cell revealed a 27%-efficiency is achievable using our
technology. These results show the advantage of the BCHJ
technology and provide a path to access new high-efficiency
photovoltaic market for the c-Si solar cell.
In-Situ Measurement of the Solid-Liquid-Interface during the Growth of Silicon Ingots by the Ultrasonic Sound Method
Creators: name: Trempa, M.
name: Hinderer, M.
name: Kupka, I.
name: Reimann, C.
name: Friedrich, J.
name: Czurratis, P.
Publisher: name: WIP
Year: 2017
Subjects: Silicon Photovoltaics
Feedstock, Crystallisation, Wafering, Defect Engineering

description: 33rd European Photovoltaic Solar Energy Conference and Exhibition; 491-494
description: For the industrial growth of silicon ingots (multi-crystalline, high-performance multi-crystalline or also
mono-like) by directional solidification it is important to know as many as possible details about the growth process
in order to achieve a high yield/wafer quality and to reduce the costs. For example, the end of melting phase, the
position of the seeding level, the start of solidification or the growth velocity are terms of large interest. For
determination of these quantities the so-called dipping method is typically used where a rod made from a ceramic or
glassy material is dipped into the melt until it touches the solid-liquid-interface. However, this method has some
drawbacks which make it to a non-usable tool for every growth run in industrial production. Within this work an
alternative, contactless technique, namely the ultrasonic sound method, was evaluated at a laboratory scale
crystallization furnace. The results show that this method could be a suitable tool for in-situ determination of all the
relevant growth steps during every solidification process without disturbing the growth process itself.
LAF 2022: Proceedings of the 12th Laser Applications Forum
Creators: name: (:Unkn) Unknown
Publisher: name: BIAS Verlag
Year: 2022
Subjects: subject: Laser Applications Forum
subject: Laser beam welding
subject: Process monitoring
subject: Micro structuring
subject: Additive manufacturing
subject: 620

description: Current R&D at BIAS is highlighted in a special session at LAF 2022, and a collection of respective short papers from BIAS is published in this proceedings volume, freely available via open access.
Structure of Tate-Shafarevich groups of elliptic curves over global function fields
Creators: name: Brown, Martin L.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: The structure of the Tate-Shafarevich groups of a class of elliptic curves over global function fields is determined. These are known to be finite abelian groups from the monograph [1] and hence they are direct sums of finite cyclic groups where the orders of these cyclic components are invariants of the Tate-Shafarevich group. This decomposition of the Tate-Shafarevich groups into direct sums of finite cyclic groups depends on the behaviour of Drinfeld-Heegner points on these elliptic curves. These are points analogous to Heegner points on elliptic curves over the rational numbers.
BBr3 Emitter Passivation by Ultra-Thin Boron Doped LPCVD Polysilicon Layers
Creators: name: Naber, R.C.G.
name: Lenes, M.
name: Luchies, J.R.M.
name: Zhai, J.Y.
name: Liu, D.
name: Wang, Z.
name: Li, F.
Publisher: name: WIP
Year: 2017
Subjects: Silicon Photovoltaics
Homojunction Solar Cells

description: 33rd European Photovoltaic Solar Energy Conference and Exhibition; 472-475
description: We aim to demonstrate the use of ultra-thin Boron doped LPCVD polysilicon layers for the front-side
BBr3 emitter passivation of nPERT
silicon solar cells. The high passivation performance and the relatively low light
absorption of such ultra-thin layers can enable a simple solar cell design with full-area polysilicon passivation on both
the front- and the rear-side. To make the cells we apply a single deposition step of undoped polysilicon on both sides,
followed by an etch step to make the front-side layer ultra-thin. The doping of the front-side polysilicon layer is
achieved by an auto-doping process which uses the emitter as a source of Boron dopant while the rear-side polysilicon
doping is obtained by Phosphorus implantation. Solar cell half-fabricates made in this way demonstrated an excellent
passivation performance with lifetime values of up to 1.6 ms and a VOC of 685 mV after fire-through contact
metallization on the front- and rear-side (100 Ohm/sq emitter). In our preliminary experiments to fully minimize the
front-side polysilicon thickness we have so far obtained a best cell efficiency of 20.6% with a VOC of 677 mV (60
Ohm/sq emitter). By retaining a thicker polysilicon layer in the contact-areas during the etch step it may be feasible to
obtain a passivated front-side contact using the same process steps.
Multi-Wire Interconnection for Multi-Busbar Interdigitated Back-Contact Cells: Opportunities and Pitfalls in Cell-Module Co-Design
Creators: name: Govaerts, J.
name: Borgers, T.
name: Manganiello, P.
name: Debucquoy, M.
name: Van Der Heide, A.
name: Goverde, H.
name: Voroshazi, E.
name: Szlufcik, J.
name: Poortmans, J.
Publisher: name: WIP
Year: 2017
Subjects: Silicon Photovoltaics
Characterisation & Simulation Methods

description: 33rd European Photovoltaic Solar Energy Conference and Exhibition; 262-265
description: In a previous contribution, we presented a multi-wire approach for interconnecting back-contact cells. While
a proof-of-concept was clearly demonstrated, some remaining fill factor (FF) losses were not fully explained
and initiated the need for a more in-depth analysis. The current abstract therefore reports on this analysis.
As a first step, we explain the reasoning towards an optimized theoretical cell-module co-design for multibusbar
interdigitated back-contact cells. Indicating the opportunities, we also present the measured results of
the fabricated demo modules. Then, looking closely at the remaining FF losses, we determine a hypothesis
for this unforeseen pitfall and confirm it through basic circuit simulations. Relying on this hypothesis, the
solution is very straightforward and could be implemented at either cell- or interconnect-level. After also
experimentally verifying this phenomenon and its solution, we finally present 1-cell laminates to indicate the
potential of the technology in terms of Cell-to-Module-performance and compare with previous modeling
results on expected FF loss.
Effect of Sputtering and Annealing Parameters on Properties of Silicon Quantum Dots
Creators: name: Sahoo, M.K.
name: Kar, J.P.
name: Kale, P.G.
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; 111-115
description: Fabrication of the third generation photovoltaic (PV) solar cell uses thin film deposition technique to deposit dielectrics such as SiO2, Si3N4, SiC, and SiOx. The layer works as a barrier layer, capping layer, tunneling medium, and an intermediate i- layer in the p-i-n structure solar cell. Control of physical parameters and morphology of thin film layer is essential for the synthesis of the quantum dots PV solar cell. The presented work use sputtering as deposition technique to fabricate SRO/SiO2 multilayers on controlling the deposition parameters such as RF sputtering power, the proportion of sputtering gas flow rate, and sputtering deposition time. The fabricated device is examined for physical and optical
properties using spectroscopic techniques such as a surface profiler, EDS-SEM, XRD, FTIR, UV-Vis, and PL.
A Hukuhara approach to the study of hybrid fuzzy systems on time scales
Creators: name: Fard, Omid S.
name: Torres, Delfim F. M.
name: Zadeh, Mohadeseh R.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 93C42, 34N05, 93D05

description: We introduce a new approach to study the practical stability of hybrid fuzzy systems on time scales in the Lyapunov sense. Our method is based on the delta-Hukuhara derivative for fuzzy valued functions and allow us to obtain new interesting stability criteria. We also show the validity of the results of [M. Sambandham: Hybrid fuzzy systems on time scales, Dynam. Systems Appl. 12 (2003), no. 1-2, 217-227], by embedding the space of all fuzzy subsets into a suitable Banach space.
description: This is a preprint of a paper whose final and definite form is published in Applicable Analysis and Discrete Mathematics (AADM), ISSN 1452-8630 (printed), ISSN 2406-100X (online), available online at [http://pefmath.etf.rs]. Submitted to AADM 02/Nov/2014; Revised and Resubmitted to AADM 22/Jul/2015; Revised 10/Feb/2016; Accepted 11/March/2016
Epistemic probability and naturalness in global fits of supersymmetric models
Creators: name: Farmer, Benjamin
Publisher: name: Monash University
Year: 2017
Subjects: Uncategorized

description: With increasingly large amounts of computational resources becoming cheaply available, Bayesian statistical methods are growing in popularity in many fields of science. In theoretical high energy physics they have found applications in “global fits” (that is, parameter extraction and model comparison) of new physics models, particularly supersymmetric models. Unfortunately, in the most interesting cases, prior probabilities can play a very strong role. In such cases an analyst has two general options available: either attempt to isolate the analysis from the impacts of prior considerations as far as possible, or embark on a very careful prior elucidation process. The first path leads back to orthodox ‘frequentist’ analyses if followed to conclusion, though one can remove some of the impact of prior choice without completely abandoning the Bayesian framework and the advantages it offers. The second path requires careful consideration of the theoretical motivation behind the models under consideration. In this thesis I will explore both options. To begin, I review the theoretical foundations of supersymmetry, before discussing the deep connections that exist between the naturalness principle and epistemic (Bayesian) probability, particularly in the form of ‘naturalness priors’. These naturalness priors and related fine-tuning measures are derived for the MSSM and the NMSSM. Following this a large numerical study of the CMSSM is performed, with a focus on the use of partial Bayes factors to partially isolate the impact of searches at the Large Hadron Collider from prior considerations. Next I include the results of a study of naturalness priors in the constrained NMSSM. I conclude with a discussion on the future prospects for employing subjectivist techniques in phenomenological studies. Accompanying the thesis are several large appendices. These provide background material regarding the philosophy of probability, particularly subjectivist/epistemic probability, along with reviews of the frequentist and Bayesian statistical techniques used in the thesis body. Along with these reviews, I explore the implications of taking seriously an ‘operational’ subjectivist position when performing Bayesian calculations.
Recent Results on Spectroscopy from COMPASS
Creators: name: Grube, Boris
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The COmmon Muon and Proton Apparatus for Structure and Spectroscopy (COMPASS) is a multi-purpose fixed-target experiment at the CERN Super Proton Synchrotron (SPS) aimed at studying the structure and spectrum of hadrons. The two-stage spectrometer has a good acceptance for charged as well as neutral particles over a wide kinematic range and is thus able to measure a wide range of reactions. Light mesons are studied with negative (mostly $π^-$) and positive ($p$, $π^+$) hadron beams with a momentum of 190 GeV/$c$. The light-meson spectrum is investigated in various final states produced in diffractive dissociation reactions at squared four-momentum transfers to the target between 0.1 and 1.0 (GeV/$c$)$^2$. The flagship channel is the $π^-π^+π^-$ final state, for which COMPASS has recorded the currently largest data sample. These data not only allow for measuring the properties of known resonances with high precision, but also for searching for new states. Among these is a new resonance-like signal, the $a_1(1420)$, with unusual properties. The findings are confirmed by the analysis of the $π^-π^0π^0$ final state. Possible bias introduced by the parametrizations used to describe the $ππ$ $S$-wave is studied using a novel analysis technique, which extracts the amplitude of the $π^+π^-$ sub-system as a function of $3π$ mass from the data. Of particular interest is the resonance content of the partial wave with spin-exotic $J^{PC} = 1^{-+}$ quantum numbers, which are forbidden for quark-antiquark states. This wave is studied in the two $3π$ channels. Further insight is gained by studying diffractively produced $π^-η$ or $π^-η'$ final states.
description: 8 pages, 17 figures, proceedings of the "XVI International Conference on Hadron Spectroscopy" (Hadron 2015), Newport News, VA, U.S.A., September 13-18, 2015
Identification and characterization of novel genes in the peripheral olfactory system of Drosophila
Creators: name: Liu, Yu-Chi
Publisher: name: Monash University
Year: 2017
Subjects: Uncategorized

description: Insects rely largely on the sense of smell for reproduction and survival. Drosophila flies detect volatile environmental cues with arrays of olfactory receptor neurons (ORNs) housed in specialized hairs, called sensilla, covering the antennae and maxillary palps. Three olfactory receptor protein families, Ors, Grs and IRs, underlie the responses of ORNs to odorants. In order to isolate novel components involved in ORN responses, two genetic screens had been performed prior to this project. Fly strains carrying mutagenized chromosomes were screened for defects in odor-evoked ORN response, using the electropalpogram (EPG) and electroantennogram (EAG) techniques which are electrophysiological responses derived from receptor potentials. Each screen isolated one mutant strain that showed greatly reduced EPG and EAG amplitudes. To determine the molecular lesion causing the mutant phenotypes, phenotypic characterization, genetic mapping, genomic sequencing and loss-of-function studies on individual candidate genes were performed. A P4-ATPase phospholipid transporter, dATP8B, was identified as the cause of one mutant phenotype, and is crucial for the sensitivity of Or- expressing ORNs. The requirement is highly specific, as ORN responses mediated by Gr and IR proteins are not affected in the mutant strain. Characterizations of odor-evoked responses, Or localization, and action potential amplitudes in dATP8B mutant animals suggest that dATP8B plays a role in Or-signaling as well as in spike generation. While the identification of the phenotype-causing mutation was not successful in the second mutant strain, analysis of olfactory electrical signals recorded from the mutant as well as wild type animals revealed interesting electrical properties of the olfactory epithelium. Firstly, neighboring sensilla were shown to be electrically coupled in wild type animals. Furthermore, the data suggest that rather than impairing ORN functions, the mutation affects the electrical properties of the olfactory epithelium, such that the coupling conductance between sensillum populations is reduced in the mutants. In summary, this thesis identified a new gene crucial for the sensitivity of Or-expressing ORNs and provided a preliminary characterization on the electrical properties of the olfactory epithelium in Drosophila.