cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Doping of Thin Film Silicon Layers Using Alternative Doping Precursors
Creators: name: Goyal, P.
name: Lahootun, V.
name: Madec, A.
name: Roca I Cabarrocas, P.
name: Johnson, E.
Publisher: name: WIP
Year: 2014
Subjects: THIN FILM SOLAR CELLS
Silicon-based Thin Film Solar Cells

description: 29th European Photovoltaic Solar Energy Conference and Exhibition; 1452-1456
description: The doped layers in thin film silicon and heterojunction solar cells deposited by Plasma Enhanced
Chemical Vapor Deposition (PECVD) provide a potential for device improvement. Conventionally, p-type doping is
done by gases such as Diborane (B2H6), Boron Trifluoride (BF3), Boron Trichloride (BCl3) or Trimethylborane
(TMB). From a practical point of view, these gases are toxic, corrosive and/or pyrophoric, and from a performance
perspective, they may not provide the full range of optical and electrical properties for the doped layers. In this work,
we explore the use of 1,3,5-Trimethylborazine (C3H12B3N3 , TMBz) as a doping gas for p-type layers deposited by
PECVD. We examine layers of p-type hydrogenated micro-crystalline silicon (p-μc-Si:H) and p-type amorphous
silicon (p-a-Si:H) using various optical and electrical characterisation techniques, as well as Secondary Ion Mass
Spectroscopy (SIMS) and Fourier Transform Infrared Spectroscopy (FT-IR). Dark conductivities of the order of 10-2
S/cm were achieved at optimised deposition conditions for the p-μc-Si:H layers. With FT-IR, it was seen that under
the deposition conditions of p-μc-Si:H, the ring structure of TMBz dissociates. These p-type layers were tested in
single junction p-i-n devices and an initial efficiency of 4.5% was achieved with un-optimised layers.
Multiwavelength studies of G298.6$-$0.0: An old GeV supernova remnant interacting with molecular clouds
Creators: name: Yeung, Paul K. H.
name: Bamba, Aya
name: Sano, Hidetoshi
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Hadronic $γ$-ray sources associated with supernova remnants (SNRs) can serve as stopwatches for the escape of cosmic rays from SNRs, which gradually develops from highest-energy particles to lowest-energy particles with time. In this work, we analyze the 13.7~yr \emph{Fermi}-LAT data to investigate the $γ$-ray feature in/around the SNR G298.6$-$0.0 region. With $γ$-ray spatial analyses, we detect three point-like components. Among them, Src-NE is at the eastern SNR shell, and Src-NW is adjacent to the western edge of this SNR. Src-NE and Src-NW demonstrate spectral breaks at energies around/below 1.8~GeV, suggesting an old SNR age of $>$10~kyr. We also look into the X-ray emission from the G298.6$-$0.0 region, with the Chandra-ACIS data. We detected an extended keV source having a centrally filled structure inside the radio shell. The X-ray spectra are well fit by a model which assumes a collisional ionisation equilibrium of the thermal plasma, further supporting an old SNR age. Based on our analyses of the NANTEN CO- and ATCA-Parkes HI-line data, we determined a kinematic distance of $\sim$10.1~kpc from us to G298.6$-$0.0. This distance entails a large physical radius of the SNR of $\sim$15.5~pc, which is an additional evidence for an old age of $>$10~kyr. Besides, the CO data cube enables us to three-dimensionally locate the molecular clouds (MCs) which are potentially interacting with SNR G298.6$-$0.0 and could account for the hadronic $γ$-rays detected at Src-NE or Src-NW. Furthermore, the multiwavelength observational properties unanimously imply that the SNR--MC interaction occurs mainly in the northeast direction.
description: Accepted by Publications of the Astronomical Society of Japan (PASJ) on 16-Jan-2023
RNA-seq of the rosette leaves of Col-0 and 35S::PtSCL30 overexpression line (OE10) under cold treatment for 24h
Creators: name: 吴文武(Wenwu WU)
Publisher: name: CNGB
Year: 2023
Subjects: Transcriptome or Gene expression
Multispecies

description: 冷处理24h下的columbia型及35S::PtSCL30_overexpression line (OE10) 型拟南芥莲座叶RNA-seq数据 RNA-seq of the rosette leaves of Col-0 and 35S::PtSCL30 overexpression line (OE10) under cold treatment for 24h
title: School Food Case Study: Canada
Creators: name: Ruetz, Amberley T
name: Tasala, Kirsti
name: McKenna, Mary
name: Martin, Alicia
name: Michnik, Kaylee
name: Edwards, Gabrielle
name: Engler-Stringe, Rachel
name: Everitt, Tracy
name: Maximova, Katerina
name: Mosby, Ian
name: Seko, Yukari
name: Woodruff, Sarah
Publisher: name: London School of Hygiene and Tropical Medicine
Year: 2023

description: This school meals case study forms part of a collection led by the Research Consortium for School Health and Nutrition’s "Good Examples" Community of Practice. Developed by a sub-group of academic members of the Canadian Association for Food Studies' School Food Working Group and validated by Canadian Coalition for Healthy School Food, the School Meals Case Study of Canada serves to document how the school meals programme is organized, funded, and monitored throughout the country. The objectives of this case study include presenting an introduction to the country profile, outlining the design and implementation of school feeding programmes, describing their monitoring and evaluation processes, and highlighting lessons learned, best practices, and challenges. This case study is written as a working paper, and can be updated to reflect evolving circumstances. The ‘Good Examples’ Community of Practice supports the evidence generation of the Research Consortium for School Health and Nutrition, the evidence-generating arm of the School Meals Coalition. The Research Consortium’s objective is to carry out independent research across diverse sectors and generate solid, compelling, and actionable evidence regarding the benefits of school food programs to inform evidence-based decision-making on school health and nutrition policies and practices.
Nanophotonics for Ultra-Thin Crystalline Silicon Photovoltaics: When Photons (Actually) Meet Electrons
Creators: name: Depauw, V.
name: Abdo, I.
name: Boukhicha, R.
name: Cariou, R.
name: Chen, W.
name: Cosme Bolanos, I.
name: Deparis, O.
name: Ding, H.
name: Dmitriev, A.
name: Drouard, E.
name: El Daif, O.
name: Fave, A.
name: Foldyna, M.
name: García-Caurel, E.
name: Heidari, B.
name: Herman, A.
name: Lalouat, L.
name: Lee, K.D.
name: Liu, J.
name: Lodewijks, K.
name: Champory, F.
name: Massiot, I.
name: Mayer, A.
name: Müller, J.
name: Narchi, P.
name: Orobtchouk, R.
name: Picardi, G.
name: Prod'homme, P.
name: Roca I Cabarrocas, P.
name: Seassal, C.
name: Trompoukis, C.
name: Gordon, I.
name: Poortmans, J.
Publisher: name: WIP
Year: 2014
Subjects: THIN FILM SOLAR CELLS
Silicon-based Thin Film Solar Cells

description: 29th European Photovoltaic Solar Energy Conference and Exhibition; 1461-1469
description: Nanopatterning has recently demonstrated to be an efficient method for boosting the light absorption
of thin films (< 50 μm) of crystalline silicon. However, convincing solar cell results are still missing. The goal of the
European project PhotoNVoltaics is to investigate the impacts that nanopatterns have on thin crystalline silicon solar
cells and to identify the conditions for their efficient integration. The present contribution presents the main findings
of the consortium so far.
Optical modeling and optimization of nanopatterned thin-film c-Si cells have indicated a few trends regarding the
design of the optimum pattern for 1-40 μm thin foils: merged inverted nanopyramids, with their progressive profile
seem to provide the best combination of antireflective and light trapping properties, together with negligible surface
damage and best coating template for subsequent process steps. But despite the high Jsc enhancement that these
nanopatterns are expected to bring, and despite the higher efficiency of these nanophotonic structures for 1-2 μm-thin
foils, the absolute Jsc values indicate that thicker foils will have to be preferred if direct competition with wafer-based
and thin-film technologies is concerned. An ideal structure is taking shape as an IBC heterojunction cell, with a frontside
nanopattern and a thickness of 40 μm.
The Price of an Electroweak Monopole
Creators: name: Ellis, John
name: Mavromatos, Nick E.
name: You, Tevong
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In a recent paper, Cho, Kim and Yoon (CKY) have proposed a version of the SU(2) $\times$ U(1) Standard Model with finite-energy monopole and dyon solutions. The CKY model postulates that the effective U(1) gauge coupling $\to \infty$ very rapidly as the Englert-Brout-Higgs vacuum expectation value $\to 0$, but in a way that is incompatible with LHC measurements of the Higgs boson $H \to γγ$ decay rate. We construct generalizations of the CKY model that are compatible with the $H \to γγ$ constraint, and calculate the corresponding values of the monopole and dyon masses. We find that the monopole mass could be $< 5.5$ TeV, so that it could be pair-produced at the LHC and accessible to the MoEDAL experiment.
description: 15 pages; Two clarifying footnotes (3 and 4) added. No effect on conclusions
Prediction of topological phases in metastable ferromagnetic MPX$_3$ monolayers
Creators: name: Sheremetyeva, Natalya
name: Na, Ilyoun
name: Saraf, Anay
name: Griffin, Sinéad M.
name: Hautier, Geoffroy
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Density functional theory calculations are carried out to study the electronic and topological properties of $M$P$X_3$ ($M$ = Mn, Fe, Co, Ni, and $X$ = S, Se) monolayers in the ferromagnetic (FM) metastable magnetic state. We find that FM MnPSe$_3$ monolayers host topological semimetal signatures that are gapped out when spin-orbit coupling (SOC) is included. These findings are supported by explicit calculations of the Berry curvature and the Chern number. The choice of the Hubbard-$U$ parameter to describe the $d$-electrons is thoroughly discussed, as well as the influence of using a hybrid-functional approach. The presence of band inversions and the associated topological features are found to be formalism-dependent. Nevertheless, routes to achieve the topological phase via the application of external biaxial strain are demonstrated. Within the hybrid-functional picture, topological band structures are recovered under a pressure of 15% (17 GPa). The present work provides a potential avenue for uncovering new topological phases in metastable ferromagnetic phases.
A Tight Relation Between N/O Ratio and Galaxy Stellar Mass Can Explain the Evolution of Strong Emission Line Ratios with Redshift
Creators: name: Masters, Daniel
name: Faisst, Andreas
name: Capak, Peter
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The offset of high redshift star-forming galaxies in the [OIII]/H$β$ versus [NII]/H$α$ (O3N2) diagram in comparison with the local star-forming galaxy sequence is now well established. The physical origin of the shift is the subject of some debate, and has important implications for metallicity measurements based on strong lines at all redshifts. To investigate the origin of the O3N2 offset, we use a sample of ~100,000 star-forming galaxies from SDSS DR12 to probe the empirical correlations between emission line diagnostics and measurable galaxy physical properties. In particular, we examine how surface density of star formation, ionization parameter, nitrogen-to-oxygen (N/O) ratio, and stellar mass drive position in two key diagnostic diagrams: O3N2 and [OIII]/H$β$ versus [SII]/H$α$ (O3S2). We show that, at fixed [OIII]/H$β$, galaxies falling closer to the high-redshift locus in O3N2 have higher star formation density, stellar mass and N/O ratios. We also find a tight correspondence in the distributions of stellar mass and N/O in the diagnostic diagrams. This relation, spanning a range of galaxy evolutionary states, suggests that the N/O-$M_{*}$ relation is more fundamental than the N/O-metallicity relation. We argue that a tight N/O-$M_{*}$ relation is well-motivated physically, and that the observed correlation of N/O with O/H in the local universe is primarily a reflection of the existence of the mass-metallicity relation. Because the mass-metallicity relation evolves much more rapidly with redshift than N/O-$M_{*}$, the N/O ratios of high redshift galaxies are significantly elevated in comparison with local galaxies with the same gas-phase O/H. The O3N2 shift and elevated N/O ratios observed in high redshift galaxies therefore come about as a natural consequence of the N/O-$M_{*}$ relation combined with the evolution of the mass-metallicity relation.
description: Submitted to ApJ
Cancer risks in 2000 relatives of children with leukaemia
Creators: name: Mitchell, Anne.
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.
Spin transport in fully hexagonal boron nitride encapsulated graphene
Creators: name: Gurram, M.
name: Omar, S.
name: Zihlmann, S.
name: Makk, P.
name: Schönenberger, C.
name: van Wees, B. J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study fully hexagonal boron nitride (hBN)-encapsulated graphene spin valve devices at room temperature. The device consists of a graphene channel encapsulated between two crystalline hBN flakes; thick-hBN flake as a bottom gate dielectric substrate which masks the charge impurities from SiO2/Si substrate and single-layer thin-hBN flake as a tunnel barrier. Full encapsulation prevents the graphene from coming in contact with any polymer/chemical during the lithography and thus gives homogeneous charge and spin transport properties across different regions of the encapsulated graphene. Further, even with the multiple electrodes in between the injection and the detection electrodes which are in conductivity mismatch regime, we observe spin transport over 12.5 um long distance under the thin-hBN encapsulated graphene channel, demonstrating the clean interface and the pin-hole free nature of the thin-hBN as an efficient tunnel barrier.
description: 5 pages, 3 figures, Accepted in Physical Review B
Enhancement of Carrier Collection in Cu2ZnSn(SeS)4 Solar Cell with Hybrid Buffer Layer
Creators: name: Hiroi, H.
name: Kim, J.
name: Gunawan, O.
name: Gokmen, T.
name: Kuwahara, M.
name: Todorov, T.K.
name: Nair, D.
name: Lee, Y.S.
name: Hopstaken, M.
name: Zhu, Y.
name: Mitzi, D.B.
name: Sugimoto, H.
Publisher: name: WIP
Year: 2014
Subjects: THIN FILM SOLAR CELLS
CdTe, CIS and Related Ternary and Quaternary Thin Film Solar Cells

description: 29th European Photovoltaic Solar Energy Conference and Exhibition; 1473-1476
description: Several groups have demonstrated high efficiency Cu2ZnSnSe4 (CZTSe), Cu2ZnSnS4 (CZTS) and
Cu2ZnSn(SeS)4 (CZTSeS) solar cells. Especially the highest efficiency has been achieved via the solution-based CZTSeS
cells by IBM. However, the power conversion efficiencies are still low as compared with the other solar cells because of
the low open circuit voltage (Voc). Recently, improvement of the Voc in these solar cells by applying a hybrid buffer layer
with combination of Cd-based and In-based buffer layers has been reported. The hybrid buffer is considered to drastically
boost Voc, and previous reports have focused on Voc and Voc deficit (defined in Eg/q-Voc). In this study we confirm that the
hybrid buffer layer can boost not only Voc but also Jsc in the CZTSeS solar cells made using a solution process.
Specifically improvement of electrostatic potential fluctuation (opt) and bandgap fluctuation (g) which have a strong
relation with the Voc was confirmed, which indicates that the hybrid buffer has a potential to improve the band tailing
problem in the CZTS-based solar cells. Furthermore, based on external quantum efficiency (EQE) and drive-level
capacitance profiling (DLCP) analyses, improvement of EQE in the long wavelength region by enhancement of depletion
width (Xd) was revealed. Finally the efficiency (Eff) of 12.7% in-house measurement in IBM (12.3% certificated in
Newport) in solution-based CZTSeS cells has been achieved by applying the hybrid buffer layer.
Mass-ratio distribution of contact binary stars
Creators: name: Pešta, Milan
Publisher: name: Zenodo
Year: 2023

description: When the mass ratio of a contact binary system drops below the critical value $q_\mathrm{min}$, the binary undergoes the tidal Darwin instability, leading to a rapid merger and observable brightening. So far, the minimum mass ratio has not been experimentally measured on a sufficiently large population of contact binary stars, because the determination of the mass ratio of a single contact binary typically requires spectroscopy. However, it is possible to infer the mass-ratio distribution of an entire population of contact binaries simply from the observed distribution of their light curve amplitudes. Employing Bayesian inference, we obtain a sample of contact-binary candidates from the Kepler Eclipsing Binary Catalog combined with Gaia EDR3 and estimates of effective temperature. Each candidate is assigned a probability of being a contact binary of either early or late type. Altogether, our sample includes about $300$ late-type and $340$ early-type contact-binary candidates with probabilities higher than $50\%$. We model the mass ratio distribution as a power law with a cut off at $q_\mathrm{min}$, and obtain the posterior distributions for the parameters. Our preliminary results constrain $q_\mathrm{min}$ to between $0.05$ and $0.1$ for late-type contact binaries with periods longer than $0.3$ days. For binaries with shorter periods, we find $q_\mathrm{min}$ between $0.15$ and $0.3$, but the sample is small. For early type contact binary stars with periods shorter than $1$ day, we find $q_\mathrm{min}≤0.07$. These results are broadly compatible with theoretical predictions. In addition, our method can be easily extended to large samples of contact binaries from TESS and other space-based surveys, and we expect that $q_\mathrm{min}$ obtained from these samples might put some constraints on tidal-interaction models of close stellar binaries.
Herschel observations of the nebula M1-67 around the Wolf-Rayet star WR 124
Creators: name: Vamvatira-Nakou, C.
name: Hutsemekers, D.
name: Royer, P.
name: Waelkens, C.
name: Groenewegen, M. A. T.
name: Barlow, M. J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Infrared Herschel imaging and spectroscopic observations of the nebula M1-67 around the Wolf-Rayet star WR 124 have been obtained along with optical imaging observations. The infrared images reveal a clumpy dusty nebula that extends up to 1 pc. The comparison with the optical images shows that the ionized gas nebula coincides with the dust nebula, the dust and the gas being mixed together. A photodissociation region is revealed from the infrared spectroscopic analysis. The analysis of the infrared spectrum of the nebula, where forbidden emission lines of ionized elements were detected, showed that the nebula consists of mildly processed material with the calculated abundance number ratios being N/O = 1.0 +/- 0.5 and C/O = 0.46 +/- 0.27. Based on a radiative transfer model, the dust mass of the nebula was estimated to be 0.22 Msun with a population of large grains being necessary to reproduce the observations. The comparison of the mass-loss rate and the abundance ratios to theoretical models of stellar evolution led to the conclusion that the nebular ejection took place during a RSG/YSG evolutionary phase of a central star with an initial mass of 32 Msun.
description: 14 pages, 11 figures, accepted for publication in A&A
Rhinolophus marshalli Thonglongya 1973
Creators: name: Koopman, Karl F.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Rhinolophidae
Rhinolophus
Rhinolophus marshalli

description: Rhinolophus marshalli Thonglongya, 1973. Mammalia, 37:590. TYPE LOCALITY: Thailand, Chantaburi, Amphoe Pong Nam Ron, foothills of Khao Soi Dao Thai. DISTRIBUTION: Thailand.
description: Published as part of Karl F. Koopman, 1993, Order Chiroptera, pp. 137-241 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 167, DOI: 10.5281/zenodo.7353060
Perovskite Single-Junction and Silicon- or CIGS-Based Tandem Solar Cells: Hype or Hope?
Creators: name: Green, M.A.
Publisher: name: WIP
Year: 2014
Subjects: THIN FILM SOLAR CELLS
Silicon-based Thin Film Solar Cells

description: 29th European Photovoltaic Solar Energy Conference and Exhibition; 1489-1492
description: The past two years has seen the rapid emergence of a new solar cell technology based on mixed
organic-inorganic lead halide perovskites. Although the first efficient solid-state perovskite cells were reported only
in mid-2012, progress was extremely rapid during 2013 with energy conversion efficiency reaching a confirmed
16.2% at year-end. During 2014, this has been increased to 17.9%, with less credible unconfirmed reports of
efficiencies up to 19.3%. Moreover, a broad range of different fabrication approaches and device concepts are
represented amongst the highest performing devices to date with this diversity suggesting performance is still far
from fully optimised. As well as application as thin-film cells in their own right, this flexibility and high radiative
efficiency makes perovskites of interest as top cells for both silicon and CIGS tandem cell technology. Challenges to
the successful development of each of these technologies are discussed.
Supplementary document for Optomechanically induced optical trapping system based on photonic crystal cavities - 6340115.pdf
Creators: name: Hong, Sungkun
name: Romero, Jose Manuel Monterrosas
name: Alavi, Seyed
name: Koistinen, Ester
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: Uncategorized

description: Supplemental document containing additional analysis and figures that aid the study described in the main manuscript
Reduction of Emitter Leak Current by Selective Boron Laser Doping for Textured Crystalline Silicon Solar Cell
Creators: name: Nishimura, H.
name: Manabe, M.
name: Fuyuki, T.
Publisher: name: WIP
Year: 2014
Subjects: WAFER-BASED SILICON SOLAR CELLS AND MATERIALS TECHNOLOGY
Silicon Solar Cell Improvements

description: 29th European Photovoltaic Solar Energy Conference and Exhibition; 1424-1426
description: Selective emitter structure leads to improve the solar cell efficiency by resolving the issue of trade-off
between front doping and metallization. Laser doping is much attractive choice to fabricate selective emitter with
simple additional step in low-cost at high through-put. The present work focuses on reduction of emitter leak current
by laser doping using spin-on dopant source for textured n-type c-Si solar cells. Nd:YAG second harmonic wave
laser (355 nm) was used for selective emitter formation. The surface dopant concentration measured by SIMS was
increased by redistribution of boron atoms from boron rich layer (BRL) after additional laser doping. The surface
texture formations after laser irradiation were almost completely preserved from smoothing, which was contributed
by high adhesiveness and uniform coating of dopant source using poly-boron film (PBF®). The formation of selective
emitter by laser doping contributed to reduction of reverse saturation current. The photovoltaic characteristics, Voc
and F.F. were improved by formation of selective emitter. Consequently, these improvements of photovoltaic
characteristics led to rising of solar cell efficiency about 3 %.
A 24.2%-Efficiency III-V/CuInGaSe Mechanical Stacking Multi-Junction Solar Cells Using Semiconductor Bonding Method
Creators: name: Makita, K.
name: Komaki, H.
name: Mizuno, H.
name: Sai, H.
name: Sugaya, T.
name: Oshima, R.
name: Shibata, H.
name: Matsubara, K.
name: Niki, S.
Publisher: name: WIP
Year: 2014
Subjects: THIN FILM SOLAR CELLS
CdTe, CIS and Related Ternary and Quaternary Thin Film Solar Cells

description: 29th European Photovoltaic Solar Energy Conference and Exhibition; 1427-1429
description: This paper shows a high efficiency III-V/CuInGaSe (CIGSe) mechanical stacking multi-junction solar
cells fabricated with unique direct bonding method. A three-junction cell with GaInP (Eg-1.89 eV)/GaAs(Eg-
1.42eV)/ CIGSe (Eg-1.2 eV) was realized by integrating a conductive Pd nanoparticle alignment with the van der
Waals bonding technique. The obtained efficiency was 24.2%, which was the highest value as the III-V/CIGSe cell
combination. According to our simulation, the efficiency can be reached over 28 % under the expected open-circuit
voltage (2.8V). These results suggested the high potential of our bonding method even with the heterogeneous cell
combinations.
Sum-rules and Goldstone modes from extended RPA theories in Fermi systems with spontaneously broken symmetries
Creators: name: Delion, D. S.
name: Schuck, P.
name: Tohyama, M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The Self-Consistent RPA (SCRPA) approach is elaborated for cases with a continuously broken symmetry, this being the main focus of the present article. Correlations beyond standard RPA are summed up correcting for the quasi-boson approximation in standard RPA. Desirable properties of standard RPA such as fullfillment of energy weighted sum rule and appearance of Goldstone (zero) modes are kept. We show theoretically and, for a model case, numerically that, indeed, SCRPA maintains all properties of standard RPA for practically all situations of spontaneously broken symmetries. A simpler approximate form of SCRPA, the so-called renormalised RPA, also has these properties. The SCRPA equations are first outlined as an eigenvalue problem, but it is also shown how an equivalent many body Green's function approach can be formulated.
description: 13 pages, 8 figures
Cd-Free CIS Thin Film Solar Modules at 17 % Efficiency
Creators: name: Palm, J.
name: Dalibor, T.
name: Lechner, R.
name: Pohlner, S.
name: Verma, R.
name: Dietmüller, R.
name: Heiß, A.
name: Vogt, H.
name: Karg, F.
Publisher: name: WIP
Year: 2014
Subjects: THIN FILM SOLAR CELLS
CdTe, CIS and Related Ternary and Quaternary Thin Film Solar Cells

description: 29th European Photovoltaic Solar Energy Conference and Exhibition; 1433-1438
description: The steep decline of PV modules prices forces all PV technologies to steadily achieve cost and efficiency improvements. We demonstrate significant changes to the conventional CIS layer stack. The cost and performance optimization of the new material systems and the processes involved resulted in the fabrication of a new international champion for laminated thin film modules of 16.6 %, as verified by NREL. Further development of our 30x30cm² R&D processes has increased aperture efficiencies up to 17.1 % (in-house measurement). The absorbers of those champion modules were pulled from production and cut from 1m2 substrates. The commonly used single layer Mo back electrode is substituted by a modified low cost back electrode using a selenization barrier. The back electrode stack is deposited on a special float glass with a slightly higher strain point. Using reflection spectroscopy, we analyze the surface and bulk band gap of absorbers processed by various RTP modifications. We demonstrate that the band gap and the corresponding open circuit voltage can be increased not only by increasing temperature and time but also by increased ramp rates and modified time –temperature profiles with short process times. The new layer stack comprises a dry PVD-deposited InxSy-based buffer layer. In a first step the composition of InxSy was adjusted to reduce copper diffusion from the absorber into the buffer. In a second step sodium was intentionally incorporated for the increase of the band gap and improved hetero-junction properties.
Supplementary document for Integrating Collapsible Plasmonic Gaps on Near-field Probes for Polarization-resolved mapping of Plasmon-enhanced Emission in 2D material - 6433997.pdf
Creators: name: Zhou, Junze
name: Barnard, Edward
name: Cabrini, Stefano
name: Munechika, Keiko
name: Schwartzberg, Adam
name: Weber-Bargioni, Alexander
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: Uncategorized

description: Supplementary
title: The spread of hacked materials on Twitter: A threat to democracy? A case study of the 2017 Macron Leaks
Creators: name: Bollmann, Hanna-Sophie
name: Gibeon, Gaia
Publisher: name: Hertie School
Year: 2022
Subjects: subject: 3 Sozialwissenschaften

description: Elections are democracy’s most important yet most vulnerable moment. Interference in the process presents an attack on the foundations of trust and knowledge in a democratic society, as seen in the Macron Leaks, a hack-and-leak operation spread on Twitter on the eve of the 2017 French presidential elections. Hack-and-leaks have become a popular modus operandi for foreign actors, often backed by Russia, to meddle and undermine democratic elections. First, we discuss the challenges democracies face by hack-and-leaks, then we turn to explore Twitter’s past attempts to self-regulate hacked materials. These were made in response to political events in the US and changing public pressure in the US, putting the platform at risk of becoming a plaything of populist movements and foreign actors seeking to undermine democracy. Until recently, the EU lacked any adequate response but the recently published revised version of the EU’s Code of Practice on Dis-information (June 2022) may signal a change. Twitter has signed the Code and promises to adopt and implement policies to prevent the spread of manipulative behaviour. Should Twitter change its Hacked Materials Policy, it will be the first time it is done in response to regulatory measures.
Effect of local Coulomb interaction on Majorana corner modes: weak and strong correlation limits
Creators: name: Aksenov, S. V.
name: Fedoseev, A. D.
name: Shustin, M. S.
name: Zlotnikov, A. O.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Here we present an analysis of the evolution of Majorana corner modes realizing in a higher-order topological superconductor (HOTSC) on a square lattice under the influence of local Coulomb repulsion. The HOTSC spectral properties were considered in two regimes: when the intensities of many-body interactions are either weak or strong. The weak regime was studied using the mean-field approximation with self-consistent solutions carried out both in the uniform case and taking into account of the boundary of the finite square-shaped system. It is shown that in the uniform case the topologically nontrivial phase on the phase diagram is widened by the Coulomb repulsion. The boundary effect, resulting in an inhomogeneous spatial distribution of the correlators, leads to the appearance of the crossover from the symmetric spin-independent solution to the spin-dependent one characterized by a spontaneously broken symmetry. In the former the corner states have energies that are determined by the overlap of the excitation wave functions localized at the different corners. In the latter the corner excitation energy is defined by the Coulomb repulsion intensity with a quadratic law. The crossover is a finite size effect, i.e. the larger the system the lesser the critical value of the Coulomb repulsion. In the strong repulsion regime we derive the effective HOTSC Hamiltonian in the atomic representation and found a rich variety of interactions induced by virtual processes between the lower and upper Hubbard subbands. It is shown that Majorana corner modes still can be realized in the limit of the infinite repulsion. Although the boundaries of the topologically nontrivial phase are strongly renormalized by Hubbard corrections.
description: 13 pages, 6 figures
Galerkin method for the numerical solution of the Burgers' equation by using exponential B-splines
Creators: name: Gorgulu, M. Zorsahin
name: Dag, I.
name: Irk, D.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: In this paper, the exponential B-spline Galerkin \ method is set up for getting the numerical solution of the Burgers' equation. Two numerical examples\ related to shock wave propogation and travelling wave are studied to illustrate the accuracy and the efficiency of the method. Obtained results are compared with some early studies.
description: 13 pages, 9 figures
Rhinolophus megaphyllus Gray 1834
Creators: name: Koopman, Karl F.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Chiroptera
Rhinolophidae
Rhinolophus
Rhinolophus megaphyllus

description: Rhinolophus megaphyllus Gray, 1834. Proc. Zool. Soc. Lond., 1834:52. TYPE LOCALITY: Australia, New South Wales, Murrumbidgee River. DISTRIBUTION: E New Guinea; Misima Isl (Louisiade Arch.), Goodenough Isl (D'Entrecasteaux Isis), and Bismark Arch. (Papua New Guinea); E Queensland, E New South Wales, and E Victoria (Australia). SYNONYMS: fallax, ignifer, monachus, vandeuseni.
description: Published as part of Karl F. Koopman, 1993, Order Chiroptera, pp. 137-241 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 167, DOI: 10.5281/zenodo.7353060
Physical Limits on Bacterial Navigation in Dynamic Environments
Creators: name: Hein, Andrew M.
name: Brumley, Douglas R.
name: Carrara, Francesco
name: Stocker, Roman
name: Levin, Simon A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Cell Behavior (q-bio.CB)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Many chemotactic bacteria inhabit environments in which chemicals appear as localized pulses and evolve by processes such as diffusion and mixing. We show that, in such environments, physical limits on the accuracy of temporal gradient sensing govern when and where bacteria can accurately measure the cues they use to navigate. Chemical pulses are surrounded by a predictable dynamic region, outside which bacterial cells cannot resolve gradients above noise. The outer boundary of this region initially expands in proportion to $\sqrt{t}$, before rapidly contracting. Our analysis also reveals how chemokinesis - the increase in swimming speed many bacteria exhibit when absolute chemical concentration exceeds a threshold - may serve to enhance chemotactic accuracy and sensitivity when the chemical landscape is dynamic. More generally, our framework provides a rigorous method for partitioning bacteria into populations that are "near" and "far" from chemical hotspots in complex, rapidly evolving environments such as those that dominate aquatic ecosystems.
description: 19 pages, 5 figures (including Supplementary Text). Journal of The Royal Society Interface, in press
Prospective observational research on vascular complications in a lower limb due to diabetes, its management and outcomes in tertiary care hospital in central rural India.
Creators: name: Dr Akanksha Yachmaneni
Publisher: name: Zenodo
Year: 2023
Subjects: Vascular complications, Lower limb, Diabetes, Management, Outcomes, Prospective observational study

description: This a proforma of clinical data collection of the "Prospective observational research on vascular complications in a lower limb due to diabetes, its management, and outcomes in tertiary care hospital in central rural India."
Research protocol : a matched case control to compare the ratios of extracellular to intracellular levels of ionised calcium in pregnant women with pre-eclampsia and eclampsia with those of normotensive pregnant women
Creators: name: Gibson, Margaret.
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.
Flexible Cu(In,Ga)Se2 Thin Film Solar Cells for Space Applications - Recent Results from a German Joint Project (PIPV2)
Creators: name: Kaufmann, C.A.
name: Greiner, D.
name: Harndt, S.
name: Klenk, R.
name: Brunken, S.
name: Schlatmann, R.
name: Nichterwitz, M.
name: Schock, H.-W.
name: Unold, T.
name: Zajac, K.
name: Brunner, S.
name: Daume, F.
name: Scheit, C.
name: Puttnins, S.
name: Braun, A.
name: Rahm, A.
name: Würz, R.
name: Kessler, F.
name: Günthner, M.
name: Pscherer, M.
name: Ihlow, S.
name: Motz, G.
name: Morgner, H.
name: Schmidt, R.G.
name: Lambrecht, A.
name: Grundmann, J.T.
name: Spietz, P.
name: Schülke, P.
Publisher: name: WIP
Year: 2014
Subjects: THIN FILM SOLAR CELLS
CdTe, CIS and Related Ternary and Quaternary Thin Film Solar Cells

description: 29th European Photovoltaic Solar Energy Conference and Exhibition; 1439-1443
description: Since 2007 a German consortium of academic and industrial partners develops an extremely light and flexible Cu(In,Ga)Se2 (CIGSe) thin film solar cell technology for space applications. The combination with a light support structure and an appropriate interconnection technology enables the construction of a solar generator with previously unmatched specific power (W/kg). This can be attractive as power supply for large platforms in space and is also compatible with alternative, flexible large area applications. The idea of the project is to utilize a solar cell technology, which - in comparison to the highly efficient, multi-junction III-V technology - is cheap and can be fabricated using manufacturing facilities for the terrestrial technology. Project activities encompass topics as fundamental as CIGSe thin film growth, individual aspects of single device components and also device interconnection, together with a corresponding support structure development. So far a maximum efficiency of 12.6% (57.8 cm²; AM1.5) could be demonstrated on an in-line roll-to-roll fabricated single device and a support structure prototype with a projected area density <1 kg/m² has been demonstrated. An earlier version of this constantly evolving technology was successfully tested on-orbit as part of the TET-1 mission.
Soybeans: Acreage Response to Price and Farm Program Changes
Creators: name: Brown, W. Herbert
name: Brown, W. Herbert
Publisher: name: Unknown
Year: 1971
Subjects: subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: Demand and Price Analysis
subject: Research Methods/ Statistical Methods
subject: Soybeans
subject: production response
subject: government programs
subject: supply response
subject: linear programming
subject: regression analysis

description: Linear programming and regression analyses are used to estimate U.S. planted acreage of soybeans with expected prices of $2.50, $2.20, $2, and $1.80 per bushel. The linear programming analysis assumes programs of the Agricultural Act of 1965 are in effect. Changes in soybean acreage induced by reductions in the loan rate for feed grain and changes in the domestic allotment for cotton are also estimated. An expected price of $2.50 for soybeans induced an estimated 1.2-million-acre increase over the prior year with 1969 specifications of the Agricultural Act of 1965 in effect. The estimated change in planted acres successively declined about 1 million acres as the price expectations were successively dropped from $2.50 to $2.20, then to $2 and to $1.80. The regression analysis is based on the period 1946-69. Independent variables include acreage in previous year, restrictions in effect for feed grains, and returns above fertilizer costs for soybeans and major competing crops. When the absolute acreage of soybeans was used as the independent variable, estimates from regression analysis were similar to those from linear programming. When the first difference in soybean acreage is used as the dependent variable, the estimates differ only in that the increase in acreage over the previous year is higher than the other estimates for each price level.
Supplementary document for Integrating Collapsible Plasmonic Gaps on Near-field Probes for Polarization-resolved mapping of Plasmon-enhanced Emission in 2D material - 6406636.pdf
Creators: name: Zhou, Junze
name: Barnard, Edward
name: Cabrini, Stefano
name: Munechika, Keiko
name: Schwartzberg, Adam
name: Weber-Bargioni, Alexander
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: Uncategorized

description: supplemental document
Recombination Characteristics of p+ Regions Alloyed from Screen-Printed Aluminum Pastes Containing Boron Additives
Creators: name: Rauer, M.
name: Steinkemper, H.
name: Schmiga, C.
name: Glatthaar, M.
name: Glunz, S.W.
Publisher: name: WIP
Year: 2014
Subjects: WAFER-BASED SILICON SOLAR CELLS AND MATERIALS TECHNOLOGY
Silicon Solar Cell Improvements

description: 29th European Photovoltaic Solar Energy Conference and Exhibition; 1420-1423
description: We present a detailed analysis of the recombination characteristics of p+ regions alloyed into silicon
from screen-printed aluminum pastes containing boron additives (Al-B pastes). By numerically simulating the saturation
current densities corresponding to (i) recombination at the surfaces of the Al-B-codoped p+ Si (Al-B-p+) regions
as well as (ii) Auger and (iii) defect recombination within their bulks, we show that the recombination characteristics
are versatilely affected by the B additive within the paste: An increase in the effective B percentage, which is the percentage
of B additive actually utilized, leads to a significant reduction of surface recombination and of defect recombination,
but also to the simultaneous intensification of Auger recombination. The optimal effective B percentage,
which has been calculated to 0.03 wt%, constitutes a compromise between these recombination mechanisms. By
measuring the saturation current densities j0,p+ of Al-B-p+ regions, the optimal effective B percentage of 0.03 wt% has
been verified experimentally. Excellently low j0,p+ values of less than 260 fA/cm2 have been achieved, corresponding
to implied open-circuit voltages of more than 664 mV. Our simulations show that Al-B pastes of optimal composition
provide a high robustness against variations of the alloying conditions, since their Al-B-p+ saturation current densities
are largely independent of the printed paste amount and the firing conditions. This allows for a more flexible fabrication
of the front and rear contacts of Si solar cells during a single co-firing process.
On the improvement of cosmological neutrino mass bounds
Creators: name: Giusarma, Elena
name: Gerbino, Martina
name: Mena, Olga
name: Vagnozzi, Sunny
name: Ho, Shirley
name: Freese, Katherine
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The most recent measurements of the temperature and low-multipole polarization anisotropies of the Cosmic Microwave Background (CMB) from the Planck satellite, when combined with galaxy clustering data from the Baryon Oscillation Spectroscopic Survey (BOSS) in the form of the full shape of the power spectrum, and with Baryon Acoustic Oscillation measurements, provide a $95\%$ confidence level (CL) upper bound on the sum of the three active neutrinos $\sum m _ν< 0.183$ eV, among the tightest neutrino mass bounds in the literature, to date, when the same datasets are taken into account. This very same data combination is able to set, at $\sim70\%$ CL, an upper limit on $\sum m _ν$ of $0.0968$ eV, a value that approximately corresponds to the minimal mass expected in the inverted neutrino mass hierarchy scenario. If high-multipole polarization data from Planck is also considered, the $95\%$ CL upper bound is tightened to $\sum m _ν< 0.176$ eV. Further improvements are obtained by considering recent measurements of the Hubble parameter. These limits are obtained assuming a specific non-degenerate neutrino mass spectrum; they slightly worsen when considering other degenerate neutrino mass schemes. Current cosmological data, therefore, start to be mildly sensitive to the neutrino mass ordering. Low-redshift quantities, such as the Hubble constant or the reionization optical depth, play a very important role when setting the neutrino mass constraints. We also comment on the eventual shifts in the cosmological bounds on $\sum m_ν$ when possible variations in the former two quantities are addressed.
description: 9 pages, 3 figures, 2 tables
Thermal effects on fracture and brittle-to-ductile transition
Creators: name: Cannizzo, Andrea
name: Giordano, Stefano
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The fracture behavior of brittle and ductile materials can be strongly influenced by thermal fluctuations, especially in micro- and nano-devices as well as in rubberlike and biological materials. However, temperature effects, in particular on the brittle-to-ductile transition, still require a deeper theoretical investigation. As a step in this direction we propose a theory, based on equilibrium statistical mechanics, able to describe the temperature dependent brittle fracture and brittle-to-ductile transition in prototypical discrete systems consisting in a lattice with breakable elements. Concerning the brittle behavior, we obtain closed form expressions for the temperature-dependent fracture stress and strain, representing a generalized Griffith criterion, ultimately describing the fracture as a genuine phase transition. With regard to the brittle-to-ductile transition, we obtain a complex critical scenario characterized by a threshold temperature between the two fracture regimes (brittle and ductile), an upper and a lower yield strength, and a critical temperature corresponding to the complete breakdown. To show the effectiveness of the proposed models in describing thermal fracture behaviors at small scales, we successfully compare our theoretical results with molecular dynamics simulations of Si and GaN nanowires.
description: 27 pages, 20 figures