arXiv: Applied Physics最新文献

High performance photonic microwave filters based on a 50GHz FSR optical soliton crystal Kerr micro-comb 基于50GHz FSR光学孤子晶体Kerr微梳的高性能光子微波滤波器

arXiv: Applied Physics Pub Date : 2021-08-30 DOI: 10.21203/RS.3.RS-855578/V1

D. Moss

引用次数: 8

Ultra-high bandwidth fiber-optic data transmission with a single chip source 采用单芯片源进行超高带宽光纤数据传输

arXiv: Applied Physics Pub Date : 2021-04-27 DOI: 10.1117/12.2584014

D. Moss

引用次数: 34

High order pulse-echo (HOPE) ultrasound 高阶脉冲回波(HOPE)超声

arXiv: Applied Physics Pub Date : 2021-04-23 DOI: 10.21203/RS.3.RS-414115/V1

Urs A. T. Hofmann, Sergio P'erez-L'opez, H. Estrada, D. Razansky

引用次数: 0

Data-driven modelling of scalable spinodoid structures for energy absorption 可伸缩棘突结构的能量吸收数据驱动建模

arXiv: Applied Physics Pub Date : 2021-03-30 DOI: 10.17028/RD.LBORO.14588484.V1

H. Kansara, G. Koh, M. Varghese, John Z. X. Luk, E. Gómez, Siddhant Kumar, Han Zhang, Emilio Mart'inez-Paneda, Wei Tan

引用次数: 1

Radioplasmonics: design of plasmonic milli-particles in air and absorbing media for antenna communication and human-body in-vivo applications. 放射等离子体:设计空气和吸收介质中的等离子体毫粒子，用于天线通信和人体体内应用。

arXiv: Applied Physics Pub Date : 2021-02-05 DOI: 10.21203/RS.3.RS-188025/V1

R. M. Abraham-Ekeroth

{"title":"Radioplasmonics: design of plasmonic milli-particles in air and absorbing media for antenna communication and human-body in-vivo applications.","authors":"R. M. Abraham-Ekeroth","doi":"10.21203/RS.3.RS-188025/V1","DOIUrl":"https://doi.org/10.21203/RS.3.RS-188025/V1","url":null,"abstract":"\u0000 Surface plasmons with MHz-GHz energies are predicted by using milliparticles made of metamaterials that behave like metals in the radiofrequency range. In this work, the so-called Radioplasmonics is exploited to design scatterers embedded in different realistic media with tunable absorption or scattering properties. High-quality scattering/absorption based on plasmon excitation is demonstrated through a few simple examples, useful to build antennas with better performance than conventional ones. Systems embedded in absorbing media as saline solutions or biological tissues are also considered to improve biomedical applications and contribute with real-time, in-vivo monitoring tools in body tissues. In this regard, any possible implementation is criticized by calculating the radiofrequency heating with full thermal simulations. As proof of the versatility offered by radioplasmonic systems, plasmon “hybridization” is used to enhance near-fields to unprecedented values or to tune resonances as in optical spectra, minimizing the heating effects. Finally, a monitorable drug-delivery in human tissue is illustrated with a hypothetical example.\u0000This study has remarkable consequences on the conception of plasmonics at macroscales. The recently-developed concept of “spoof” plasmons achieved by complicated structures is simplified in Radioplasmonics since bulk materials with elemental geometries are considered.","PeriodicalId":8423,"journal":{"name":"arXiv: Applied Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85397699","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

X-ray photons produced from a plasma-cathode electron beam for radiation biology applications 等离子体阴极电子束产生的x射线光子在辐射生物学中的应用

arXiv: Applied Physics Pub Date : 2021-01-30 DOI: 10.1063/5.0036284

F. Gobet, P. Barberet, L. Courtois, G. Devès, J. Gardelle, S. Leblanc, L. Plawinski, H. Seznec

引用次数: 1

Soliton crystal Kerr microcombs for high-speed, scalable optical neural networks at 10 GigaOPs/s 用于高速、可扩展光学神经网络的孤子晶体Kerr微梳

arXiv: Applied Physics Pub Date : 2021-01-29 DOI: 10.23919/MWP48676.2020.9314409

Xingyuan Xu, M. Tan, D. Moss

引用次数: 0

Ultrafast spin-currents and charge conversion at 3d-5d interfaces probed by time-domain terahertz spectroscopy 时域太赫兹光谱探测3d-5d界面的超快自旋电流和电荷转换

arXiv: Applied Physics Pub Date : 2020-12-07 DOI: 10.1063/5.0022369

T. Dang, J. Hawecker, E. Rongione, G. B. Baez Flores, D. To, J. Rojas-Sánchez, H. Nong, J. Mangeney, J. Tignon, F. Godel, S. Collin, P. Sénéor, M. Bibes, A. Fert, M. Anane, J. George, L. Vila, M. Cosset-Cheneau, D. Dolfi, R. Lebrun, P. Bortolotti, K. Belashchenko, S. Dhillon, H. Jaffrès

{"title":"Ultrafast spin-currents and charge conversion at 3d-5d interfaces probed by time-domain terahertz spectroscopy","authors":"T. Dang, J. Hawecker, E. Rongione, G. B. Baez Flores, D. To, J. Rojas-Sánchez, H. Nong, J. Mangeney, J. Tignon, F. Godel, S. Collin, P. Sénéor, M. Bibes, A. Fert, M. Anane, J. George, L. Vila, M. Cosset-Cheneau, D. Dolfi, R. Lebrun, P. Bortolotti, K. Belashchenko, S. Dhillon, H. Jaffrès","doi":"10.1063/5.0022369","DOIUrl":"https://doi.org/10.1063/5.0022369","url":null,"abstract":"Spintronic structures are extensively investigated for their spin orbit torque properties, required for magnetic commutation functionalities. Current progress in these materials is dependent on the interface engineering for the optimization of spin transmission. Here, we advance the analysis of ultrafast spin-charge conversion phenomena at ferromagnetic-transition metal interfaces due to their inverse spin-Hall effect properties. In particular the intrinsic inverse spin Hall effect of Pt-based systems and extrinsic inverse spin-Hall effect of Au:W and Au:Ta in NiFe/Au:(W,Ta) bilayers are investigated. The spin-charge conversion is probed by complementary techniques -- ultrafast THz time domain spectroscopy in the dynamic regime for THz pulse emission and ferromagnetic resonance spin-pumping measurements in the GHz regime in the steady state -- to determine the role played by the material properties, resistivities, spin transmission at metallic interfaces and spin-flip rates. These measurements show the correspondence between the THz time domain spectroscopy and ferromagnetic spin-pumping for the different set of samples in term of the spin mixing conductance. The latter quantity is a critical parameter, determining the strength of the THz emission from spintronic interfaces. This is further supported by ab-initio calculations, simulations and analysis of the spin-diffusion and spin relaxation of carriers within the multilayers in the time domain, permitting to determine the main trends and the role of spin transmission at interfaces. This work illustrates that time domain spectroscopy for spin-based THz emission is a powerful technique to probe spin-dynamics at active spintronic interfaces and to extract key material properties for spin-charge conversion.","PeriodicalId":8423,"journal":{"name":"arXiv: Applied Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88849876","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: 59

Designing few-layer graphene Schottky contact solar cells: Theoretical efficiency limits and parametric optimization 设计少层石墨烯肖特基接触太阳能电池:理论效率极限和参数优化

arXiv: Applied Physics Pub Date : 2020-12-06 DOI: 10.1063/5.0039431

Xin Zhang, Jicheng Wang, Y. Ang, Juncheng Guo

引用次数: 7

Hysteresis-Free Negative Capacitance Effect in Metal-Ferroelectric-Insulator-Metal Capacitors with Dielectric Leakage and Interfacial Trapped Charges 具有介电泄漏和界面俘获电荷的金属-铁电-绝缘体-金属电容器的无迟滞负电容效应

arXiv: Applied Physics Pub Date : 2020-12-04 DOI: 10.1103/PHYSREVAPPLIED.15.034048

Chia-Sheng Hsu, Sou-Chi Chang, Dmitri E. Nikonov, I. Young, A. Naeemi

{"title":"Hysteresis-Free Negative Capacitance Effect in Metal-Ferroelectric-Insulator-Metal Capacitors with Dielectric Leakage and Interfacial Trapped Charges","authors":"Chia-Sheng Hsu, Sou-Chi Chang, Dmitri E. Nikonov, I. Young, A. Naeemi","doi":"10.1103/PHYSREVAPPLIED.15.034048","DOIUrl":"https://doi.org/10.1103/PHYSREVAPPLIED.15.034048","url":null,"abstract":"The negative capacitance (NC) stabilization of a ferroelectric (FE) material can potentially provide an alternative way to further reduce the power consumption in ultra-scaled devices and thus has been of great interest in technology and science in the past decade. In this article, we present a physical picture for a better understanding of the hysteresis-free charge boost effect observed experimentally in metal-ferroelectric-insulator-metal (MFIM) capacitors. By introducing the dielectric (DE) leakage and interfacial trapped charges, our simulations of the hysteresis loops are in a strong agreement with the experimental measurements, suggesting the existence of an interfacial oxide layer at the FE-metal interface in metal-ferroelectric-metal (MFM) capacitors. Based on the pulse switching measurements, we find that the charge enhancement and hysteresis are dominated by the FE domain viscosity and DE leakage, respectively. Our simulation results show that the underlying mechanisms for the observed hysteresis-free charge enhancement in MFIM may be physically different from the alleged NC stabilization and capacitance matching. Moreover, the link between Merz's law and the phenomenological kinetic coefficient is discussed, and the possible cause of the residual charges observed after pulse switching is explained by the trapped charge dynamics at the FE-DE interface. The physical interpretation presented in this work can provide important insights into the NC effect in MFIM capacitors and future studies of low-power logic devices.","PeriodicalId":8423,"journal":{"name":"arXiv: Applied Physics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83640266","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: 3