arXiv - PHYS - Applied Physics最新文献

p-(001)NiO/n-(0001)ZnO Heterostructures based Ultraviolet Photodetectors 基于 p-(001)NiO/n-(0001)ZnO 异质结构的紫外线光电探测器

arXiv - PHYS - Applied Physics Pub Date : 2024-09-18 DOI: arxiv-2409.11922

Amandeep Kaur, Bhabani Prasad Sahoo, Ajoy Biswas, Subhabrata Dhar

引用次数: 0

Normal/inverse Doppler effect of backward volume magnetostatic spin waves 后向体积磁静力自旋波的正向/反向多普勒效应

arXiv - PHYS - Applied Physics Pub Date : 2024-09-18 DOI: arxiv-2409.11674

Xuhui Su, Dawei Wang, Shaojie Hu

引用次数: 0

Ultrafast cascade charge transfer in multi bandgap colloidal quantum dot solids enables threshold reduction for optical gain and stimulated emission 多带隙胶体量子点固体中的超快级联电荷转移可降低光增益和受激发射的阈值

arXiv - PHYS - Applied Physics Pub Date : 2024-09-18 DOI: arxiv-2409.11982

Nima Taghipour, Mariona Dalmases, Guy Luke Whitworth, Yongjie Wang, Gerasimos Konstantatos

{"title":"Ultrafast cascade charge transfer in multi bandgap colloidal quantum dot solids enables threshold reduction for optical gain and stimulated emission","authors":"Nima Taghipour, Mariona Dalmases, Guy Luke Whitworth, Yongjie Wang, Gerasimos Konstantatos","doi":"arxiv-2409.11982","DOIUrl":"https://doi.org/arxiv-2409.11982","url":null,"abstract":"Achieving low-threshold infrared stimulated emission in solution-processed\u0000quantum dots is critical to enable real-life application including photonic\u0000integrated circuits (PICs), LIDAR application and optical telecommunication.\u0000However, realization of low threshold infrared gain is fundamentally\u0000challenging due to high degeneracy of the first emissive state (e.g., 8-fold)\u0000and fast Auger recombination. In this letter, we demonstrate ultralow-threshold\u0000infrared stimulated emission with an onset of 110 uJ.cm-2 employing cascade\u0000charge transfer (CT) in Pb-chalcogenide colloidal quantum dot (CQD) solids. In\u0000doing so, we investigate this idea in two different architectures including a\u0000mixture of multiband gap CQDs and layer-by-layer (LBL) configuration. Using\u0000transient absorption spectroscopy, we show ultrafast cascade CT from large\u0000band-gap PbS CQD to small band-gap PbS/PbSSe core/shell CQDs in LBL (~ 2 ps)\u0000and mixture (~ 9 ps) configuration. These results indicate the feasibility of\u0000using cascade CT as an efficient method to reduce optical gain threshold in CQD\u0000solid films.","PeriodicalId":501083,"journal":{"name":"arXiv - PHYS - Applied Physics","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142259898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Overcoming Ambient Drift and Negative-Bias Temperature Instability in Foundry Carbon Nanotube Transistors 克服铸造碳纳米管晶体管的环境漂移和负偏压温度不稳定性

arXiv - PHYS - Applied Physics Pub Date : 2024-09-17 DOI: arxiv-2409.11297

Andrew Yu, Tathagata Srimani, Max Shulaker

{"title":"Overcoming Ambient Drift and Negative-Bias Temperature Instability in Foundry Carbon Nanotube Transistors","authors":"Andrew Yu, Tathagata Srimani, Max Shulaker","doi":"arxiv-2409.11297","DOIUrl":"https://doi.org/arxiv-2409.11297","url":null,"abstract":"Back-end-of-line (BEOL) logic integration is emerging as a complementary\u0000scaling path to supplement front-end-of-line (FEOL) Silicon. Among various\u0000options for BEOL logic, Carbon Nanotube Field-Effect Transistors (CNFETs) have\u0000been integrated within commercial silicon foundries, and complex CNFET circuits\u0000(e.g., RISC-V core, SRAM arrays) have been demonstrated. However, there lacks\u0000comprehensive studies that analyze the ambient drift (i.e., air-stability) and\u0000reliability of CNFETs. Here, for the first time, we thoroughly characterize and\u0000demonstrate how to overcome ambient drift and negative bias temperature\u0000instability (NBTI) in CNFETs using the following techniques: (1) Silicon\u0000Nitride encapsulation to limit ambient atmosphere induced threshold voltage\u0000shift (~8x reduction of median VT shift over 90 days) and (2) AC/pulsed\u0000operation to significantly improve CNFET NBTI vs. DC operation across a wide\u0000frequency range (e.g., 20% duty cycle AC operation at 10 MHz could extend CNFET\u0000NBTI time-to-failure by >10000x vs. DC for a target VT shift tolerance < 100 mV\u0000with gate stress bias VGS,stress = -1.2 V at 125 C).","PeriodicalId":501083,"journal":{"name":"arXiv - PHYS - Applied Physics","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142259955","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unattended field measurement of bird source level 无人值守的鸟源水平现场测量

arXiv - PHYS - Applied Physics Pub Date : 2024-09-17 DOI: arxiv-2409.10957

Guillaume Dutilleux

引用次数: 0

Giant magnetocrystalline anisotropy energy in Fe--Co alloy under uniaxial compression: first-principles prediction 单轴压缩下Fe--Co合金中的巨大磁晶各向异性能：第一原理预测

arXiv - PHYS - Applied Physics Pub Date : 2024-09-17 DOI: arxiv-2409.11388

Wojciech Marciniak, Joanna Marciniak, José Ángel Castellanos-Reyes, Mirosław Werwiński

引用次数: 0

Fabrication of Ultra-Thick Masks for X-ray Phase Contrast Imaging at Higher Energy 制造用于高能 X 射线相位对比成像的超厚掩膜

arXiv - PHYS - Applied Physics Pub Date : 2024-09-17 DOI: arxiv-2409.11237

Alessandro Rossi, Ian Buchanan, Alberto Astolfo, Martyna Michalska, Daniel Briglin, Anton Charman, Daniel Josell, Sandro Olivo, Ioannis Papakonstantinou

{"title":"Fabrication of Ultra-Thick Masks for X-ray Phase Contrast Imaging at Higher Energy","authors":"Alessandro Rossi, Ian Buchanan, Alberto Astolfo, Martyna Michalska, Daniel Briglin, Anton Charman, Daniel Josell, Sandro Olivo, Ioannis Papakonstantinou","doi":"arxiv-2409.11237","DOIUrl":"https://doi.org/arxiv-2409.11237","url":null,"abstract":"X-ray phase contrast imaging (XPCI) provides higher sensitivity to contrast\u0000between low absorbing objects that can be invisible to conventional\u0000attenuation-based X-ray imaging. XPCI's main application has been so far\u0000focused on medical areas at relatively low energies (< 100 keV). The\u0000translation to higher energy for industrial applications, where energies above\u0000150 keV are often needed, is hindered by the lack of masks/gratings with\u0000sufficiently thick gold septa. Fabricating such structures with apertures of\u0000tens of micrometers becomes difficult at depths greater than a few hundreds of\u0000micrometers due to aspect ratio dependent effects such as anisotropic etching,\u0000and preferential gold (Au) deposition at the top of the apertures. In this\u0000work, these difficulties are overcome by Deep Reactive Ion Etching optimized by\u0000a stepped parameters approach and bismuth-mediated superconformal filling of\u0000Au, ultimately resulting in 500 micrometers deep silicon masks filled with Au\u0000at bulk density. The obtained masks, tested in an Edge Illumination XPCI system\u0000with a conventional source and a photon-counting detector, show good agreement\u0000with simulations at different energy thresholds. They also demonstrate a higher\u0000phase sensitivity for highly absorbing objects when compared to lower aspect\u0000ratio masks, proving their potential for industrial non-destructive testing.","PeriodicalId":501083,"journal":{"name":"arXiv - PHYS - Applied Physics","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142259954","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dispersive wave propagation in disordered flexible fibers enhances stress attenuation 无序柔性纤维中的色散波传播可增强应力衰减

arXiv - PHYS - Applied Physics Pub Date : 2024-09-17 DOI: arxiv-2409.10926

Peng Wang, Thomas Pähtz, Kun Luo, Yu Guo

引用次数: 0

hklhop: a Selection Tool for Asymmetric Reflections of Spherically Bent Crystal Analysers for High Resolution X-ray Spectroscopy hklhop：用于高分辨率 X 射线光谱球形弯曲晶体分析仪不对称反射的选择工具

arXiv - PHYS - Applied Physics Pub Date : 2024-09-16 DOI: arxiv-2409.10698

Jared E. Abramson, Yeu Chen, Gerald T. Seidler

{"title":"hklhop: a Selection Tool for Asymmetric Reflections of Spherically Bent Crystal Analysers for High Resolution X-ray Spectroscopy","authors":"Jared E. Abramson, Yeu Chen, Gerald T. Seidler","doi":"arxiv-2409.10698","DOIUrl":"https://doi.org/arxiv-2409.10698","url":null,"abstract":"High resolution, hard x-ray spectroscopy at synchrotron x-ray light sources\u0000commonly uses spherically bent crystal analyzers (SBCAs) formed by shaping a\u0000single crystal wafer to a spherical backing. These Rowland circle optics are\u0000almost always used in a 'symmetric' (or nearly symmetric) configuration wherein\u0000the reciprocal lattice vector used for energy selectivity via diffraction is\u0000coincident with the normal vector to the curved wafer surface. However,\u0000Gironda, et al., recently proposed that asymmetric operation of SBCA, wherein\u0000the reciprocal lattice vector is no longer normal to the wafer surface, has\u0000significant operational benefits and has been an underutilized opportunity.\u0000First, those authors find improved energy resolution through decreased Johann\u0000error, or equivalently find increased solid angle at a chosen experimental\u0000tolerance for energy broadening. Second, they find productive, high-resolution\u0000use of a large number of reciprocal lattice vectors from a single SBCA, thus\u0000enabling operation over a wide energy range without need to exchange SBCA upon\u0000making large changes in desired photon energy. These observations hold the\u0000potential to improve performance, increase flexibility and decrease cost for\u0000both laboratory and synchrotron applications. Given these motivations, we\u0000report an open-source software package, hklhop, that enables exploration of the\u0000complex space of analyzer wafer choice, experimental energy range or ranges,\u0000and desired suppression of Johann error. This package can guide both the design\u0000and the day-to-day operations of Rowland spectrometers enabled for asymmetric\u0000use.","PeriodicalId":501083,"journal":{"name":"arXiv - PHYS - Applied Physics","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142259953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A semi-analytical method using auxiliary sine series for vibration and sound radiation of a rectangular plate with elastic edges 利用辅助正弦级数的半解析法研究带弹性边缘的矩形板的振动和声辐射

arXiv - PHYS - Applied Physics Pub Date : 2024-09-16 DOI: arxiv-2409.09929

Guoming Deng, Xian Wu, Changxiao Shao, Songlin Zheng, Jianwang Shao

{"title":"A semi-analytical method using auxiliary sine series for vibration and sound radiation of a rectangular plate with elastic edges","authors":"Guoming Deng, Xian Wu, Changxiao Shao, Songlin Zheng, Jianwang Shao","doi":"arxiv-2409.09929","DOIUrl":"https://doi.org/arxiv-2409.09929","url":null,"abstract":"This paper proposes an efficient semi-analytical method using auxiliary sine\u0000series for transverse vibration and sound radiation of a thin rectangular plate\u0000with edges elastically restrained against translation and rotation. The\u0000formulation, constructed by two-dimensional sine and/or cosine series, can\u0000approximately express the bending displacement, and calculate vibration and\u0000sound radiation under excitation of point force, arbitrary-angle plane wave, or\u0000diffuse acoustic field with acceptable accuracy. It is also applied for baffled\u0000or unbaffled conditions. A post-process program is developed to predict\u0000vibrating frequencies and modes, mean square velocity spectrum, and sound\u0000transmission loss via reduced-order integrals of radiation impedances. The\u0000method is validated by experiment and simulation results, demonstrating\u0000accurate and efficient computation using a single program for transverse\u0000vibration and sound radiation of a plate under different elastic boundary\u0000conditions and different excitations. Formulas given in this paper provide a\u0000basis for the code development on transverse vibration and sound radiation\u0000analysis of thin plates.","PeriodicalId":501083,"journal":{"name":"arXiv - PHYS - Applied Physics","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142259958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0