arXiv: Applied Physics最新文献_第3页

Surface magnetic structure investigation of a nanolaminated Mn$_2$GaC thin film using a magnetic field microscope based on Nitrogen-Vacancy centers 基于氮空位中心的磁场显微镜研究纳米层状Mn$_2$GaC薄膜的表面磁性结构

arXiv: Applied Physics Pub Date : 2020-11-11 DOI: 10.1016/J.MATCHEMPHYS.2021.124972

A. Berzins, J. Smits, A. Petruhins, Hugo Grube

引用次数: 2

Emergent Magnetic Monopole and Dipole Screening by Proximity Effect With Noble Metal 贵金属邻近效应筛选涌现磁单极子和偶极子

arXiv: Applied Physics Pub Date : 2020-11-10 DOI: 10.21203/rs.3.rs-136395/v1

F. F. Martins, T. S. Paiva, Daniel G. Duarte, J. H. Rodrigues, L. M'ol, Jerome Borme Paulo P. Freitas, C. Araujo

引用次数: 0

Void engineering in epitaxially regrown GaAs-based photonic crystal surface emitting lasers by grating profile design 基于光栅轮廓设计的外延再生gaas光子晶体表面发射激光器中的空洞工程

arXiv: Applied Physics Pub Date : 2020-11-09 DOI: 10.1063/5.0035038

A. McKenzie, B. King, K. Rae, S. Thoms, N. Gerrard, J. Orchard, K. Nishi, K. Takemasa, M. Sugawara, R. J. Taylor, D. Childs, D. Maclaren, R. Hogg

引用次数: 8

Charge coloration dynamics of electrochromic amorphous tungsten oxide studied by simultaneous electrochemical and color impedance measurements 采用电化学和颜色阻抗同步测量方法研究了电致变色非晶氧化钨的电荷着色动力学

arXiv: Applied Physics Pub Date : 2020-11-08 DOI: 10.1063/5.0038531

Edgar A. Rojas-González, G. Niklasson

{"title":"Charge coloration dynamics of electrochromic amorphous tungsten oxide studied by simultaneous electrochemical and color impedance measurements","authors":"Edgar A. Rojas-González, G. Niklasson","doi":"10.1063/5.0038531","DOIUrl":"https://doi.org/10.1063/5.0038531","url":null,"abstract":"The coloration mechanisms in electrochromic (EC) systems can be probed by comparing the dynamics of the electrical and optical responses. In this paper, the linear frequency-dependent electrical and optical responses of an amorphous tungsten oxide thin film were measured simultaneously by a combination of two techniques$text{---}$that is, electrochemical impedance spectroscopy (EIS) and the so-called color impedance spectroscopy (CIS). This was done at different bias potentials, which can be associated with different intercalation levels. Equivalent circuit fitting to the EIS spectra was used to extract the Faradaic components participating in the total impedance response. The latter were assigned to an intermediate adsorption step before the intercalation and to the diffusion of the electron-ion couple in the film. A quantity denoted complex optical capacitance is compared to the complex electrical capacitance$text{---}$in particular, their expressions are related to the Faradaic processes. The coloration at low intercalation levels followed both the adsorption and diffusion phenomena. Conversely, the diffusion contribution was dominant at high intercalation levels and the adsorption one seemed to be negligible in this case. For perfectly synchronized electrical and optical responses, their complex spectra are expected to differ only by a multiplying factor. This was the case at low intercalation levels, apart from small deviations at high frequencies. A clear departure from this behavior was observed as the intercalation level increased. A combination of frequency-dependent techniques, as presented in this work, can help in the understanding of the dynamics of the coloration mechanisms in EC materials at various conditions$text{---}$for example, at different intercalation levels and optical wavelengths.","PeriodicalId":8423,"journal":{"name":"arXiv: Applied Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82831670","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: 5

Designing drones by combining finite element and atomistic simulations: a didactic approach 结合有限元和原子模拟设计无人机:一种教学方法

arXiv: Applied Physics Pub Date : 2020-11-04 DOI: 10.1478/AAPP.99S1A33

M. Raffaele, M. T. Caccamo, G. Castorina, S. Lanza, S. Magazù, G. Munaò, G. Randazzo

{"title":"Designing drones by combining finite element and atomistic simulations: a didactic approach","authors":"M. Raffaele, M. T. Caccamo, G. Castorina, S. Lanza, S. Magazù, G. Munaò, G. Randazzo","doi":"10.1478/AAPP.99S1A33","DOIUrl":"https://doi.org/10.1478/AAPP.99S1A33","url":null,"abstract":"A didactic multiscale approach for drone modeling is proposed. Specifically, we investigate the drone structure at both macroscopic and microscopic scales, by making use of finite element and atomistic simulations, respectively. The structural analysis is performed with the aim to equip the drone with specific sensors and measuring instruments capable to detect the existence of volcanic ash, SO2 , CO2 and other pollutants in the atmosphere after a vulcanic eruption. We show that, by modeling the tubular structure of the drone with a sandwich constituted by a a polystyrene core, carbon fiber skins and epoxy matrix, a weight saving of 7 grams for each drone arm can be obtained, in comparison to the standard commercial drones, although a slight worsening of the mechanical performances is observed. In addition, the molecular structure of the polystyrene chains has been investigated by using atomistic Molecular Dynamics simulations, providing further information on the local structure of the polymer chains. Additional improvements of the weight saving could be obtained by means of the the topological optimization techniques on the body of the drone and on the supports for landing.","PeriodicalId":8423,"journal":{"name":"arXiv: Applied Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79631315","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: 1

Cost-Performance Trade-off in thermoelectric air conditioning system with graded and constant material properties 具有分级和恒定材料性能的热电空调系统的成本性能权衡

arXiv: Applied Physics Pub Date : 2020-11-04 DOI: 10.1016/J.ENBUILD.2021.110931

A. Saini, Sarah J. Watzman, J. Bahk

引用次数: 7

Spin wave propagation in corrugated waveguides 自旋波在波纹波导中的传播

arXiv: Applied Physics Pub Date : 2020-11-02 DOI: 10.1063/5.0041138

Igor Turčan, L. Flajšman, O. Wojewoda, Václav Roučka, O. Man, M. Urbánek

引用次数: 9

Transient grating spectroscopy of photocarrier dynamics in semiconducting polymer thin films 半导体聚合物薄膜中光载流子动力学的瞬态光栅光谱

arXiv: Applied Physics Pub Date : 2020-10-29 DOI: 10.1063/5.0034773

Wenkai Ouyang, Yu Li, Brett Yurash, N. Schopp, A. Vega-Flick, V. Brus, Thuc‐Quyen Nguyen, Bolin Liao

{"title":"Transient grating spectroscopy of photocarrier dynamics in semiconducting polymer thin films","authors":"Wenkai Ouyang, Yu Li, Brett Yurash, N. Schopp, A. Vega-Flick, V. Brus, Thuc‐Quyen Nguyen, Bolin Liao","doi":"10.1063/5.0034773","DOIUrl":"https://doi.org/10.1063/5.0034773","url":null,"abstract":"While charge carrier dynamics and thermal management are both keys to the operational efficiency and stability for energy-related devices, experimental techniques that can simultaneously characterize both properties are still lacking. In this paper, we use laser-induced transient grating (TG) spectroscopy to characterize thin films of the archetypal organic semiconductor regioregular poly(3-hexylthiophene) (P3HT) and its blends with the electron acceptor [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) on glass substrates. While the thermal response is determined to be dominated by the substrates, we show that the recombination dynamics of photocarriers in the organic semiconductor thin films occur on a similar timescale and can be separated from the thermal response. Our measurements indicate that the photocarrier dynamics are determined by multiple recombination processes and our extracted recombination rates are in good agreement with previous reports using other techniques. We further apply TG spectroscopy to characterize another conjugated polymer and a molecular fluorescent material to demonstrate its general applicability. Our study indicates the potential of transient grating spectroscopy to simultaneously characterize thermal transport and photocarrier dynamics in organic optoelectronic devices.","PeriodicalId":8423,"journal":{"name":"arXiv: Applied Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77974503","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: 2

Revealing the internal luminescence quantum efficiency of perovskite films via accurate quantification of photon recycling 通过光子回收的精确量化揭示钙钛矿薄膜的内部发光量子效率

arXiv: Applied Physics Pub Date : 2020-10-24 DOI: 10.1016/J.MATT.2021.01.019

P. Fassl, Vincent Lami, Felix J. Berger, Lukas M. Falk, J. Zaumseil, B. Richards, I. Howard, Y. Vaynzof, U. Paetzold

引用次数: 28

Ultrabroadband Acoustic Ventilation Barriers via Hybrid-Functional Metasurfaces 基于混合功能超表面的超宽带声通风屏障

arXiv: Applied Physics Pub Date : 2020-10-16 DOI: 10.1103/PHYSREVAPPLIED.15.024044

Ruizhi Dong, Dongxing Mao, Xu Wang, Yong Li

引用次数: 18