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Radially self-accelerating light exhibits an intensity pattern that describes a spiraling trajectory around the optical axis as the beam propagates. In this article, we show in simulation and experiment how such beams can be used to perform…

光学 · 物理学 2021-04-08 Shashi Prabhakar , Stephen Plachta , Marco Ornigotti , Robert Fickler

Single-Photon Avalanche Diodes (SPAD) are affordable photodetectors, capable to collect extremely fast low-energy events, due to their single-photon sensibility. This makes them very suitable for time-of-flight-based range imaging systems,…

仪器与探测器 · 物理学 2017-03-09 Quercus Hernandez , Diego Gutierrez , Adrian Jarabo

We report the experimental observation of all-optical modulation of light in a graphene film. The graphene film is scanned across a standing wave formed by two counter-propagating laser beams in a Sagnac interferometer. Through a coherent…

A Scene, represented visually using different formats such as RGB-D, LiDAR scan, keypoints, rectangular, spherical, multi-views, etc., contains information implicitly embedded relevant to applications such as scene indexing, vision-based…

计算机视觉与模式识别 · 计算机科学 2026-03-24 Preeti Meena , Himanshu Kumar , Sandeep Yadav

We propose a machine learning-driven optimisation framework for analog circuit design in this paper. The primary objective is to determine the device sizes for the optimal performance of analog circuits for a given set of specifications.…

神经与进化计算 · 计算机科学 2024-12-16 Ria Rashid , Komala Krishna , Clint Pazhayidam George , Nandakumar Nambath

Attenuation compensation (AC) is a pre-requisite for reliable quantification and beneficial for visual interpretation tasks in single-photon emission computed tomography (SPECT). Typical AC methods require the availability of an attenuation…

医学物理 · 物理学 2021-02-12 Zitong Yu , Md Ashequr Rahman , Thomas Schindler , Richard Laforest , Abhinav K. Jha

We propose a practical and efficient solution for the coupling of light from integrated single-mode waveguides to supercollimating planar photonic crystals on conventional silicon-on-insulator platforms. The device consists of a rib…

光学 · 物理学 2009-11-13 K. Vynck , E. Centeno , M. Le Vassor d'Yerville , D. Cassagne

We have applied the photoexcited muon spin spectroscopy technique (photo-$\mu$SR) to intrinsic germanium with the goal of developing a new method for characterizing excess carrier kinetics in a wide range of semiconductors. Muon spin…

材料科学 · 物理学 2019-10-02 K. Yokoyama , J. S. Lord , P. W. Mengyan , M. R. Goeks , R. L. Lichti

Upcoming high spectral resolution telescopes, particularly Astro-H, are expected to finally deliver firm quantitative constraints on turbulence in the intra-cluster medium (ICM). We develop a new spectral analysis technique which exploits…

宇宙学与河外天体物理 · 物理学 2015-06-04 Cien Shang , S. Peng Oh

Mobile edge computing (MEC) is an emerging communication scheme that aims at reducing latency. In this paper, we investigate a green MEC system under the existence of an eavesdropper. We use computation efficiency, which is defined as the…

网络与互联网体系结构 · 计算机科学 2020-04-14 Haijian Sun , Qun Wang , Xiang Ma , Yongjun Xu , Rose Qingyang Hu

We introduce a wearable single-eye emotion recognition device and a real-time approach to recognizing emotions from partial observations of an emotion that is robust to changes in lighting conditions. At the heart of our method is a…

图形学 · 计算机科学 2023-10-09 Haiwei Zhang , Jiqing Zhang , Bo Dong , Pieter Peers , Wenwei Wu , Xiaopeng Wei , Felix Heide , Xin Yang

Integrated quantum photonics, which allows for the development and implementation of chip-scale devices, is recognized as a key enabling technology on the road towards scalable quantum networking schemes. However, many state-of-the-art…

仪器与探测器 · 物理学 2019-10-18 Salih Yanikgonul , Victor Leong , Jun Rong Ong , Ching Eng Png , Leonid Krivitsky

Quantitative analysis methods based on the usage of a scanning electron microscope (SEM), such as energy dispersive x-ray spectroscopy, often require specimens to have a flat surface oriented normal to the electron beam. In-situ procedures…

介观与纳米尺度物理 · 物理学 2023-02-15 Clay Klein , Chunfei Li

Device sizing is crucial for meeting performance specifications in operational transconductance amplifiers (OTAs), and this work proposes an automated sizing framework based on a transformer model. The approach first leverages the…

硬件体系结构 · 计算机科学 2025-02-07 Subhadip Ghosh , Endalk Y. Gebru , Chandramouli V. Kashyap , Ramesh Harjani , Sachin S. Sapatnekar

Single-photon emitters (SPEs) are at the basis of many applications for quantum information management. Semiconductor-based SPEs are best suited for practical implementations because of high design flexibility, scalability and integration…

In this work, we propose an efficient and transparent green learning pipeline to address the automatic modulation classification (AMC) problem. This pipeline aims to enable receivers to blindly identify the modulation modes of the incoming…

信号处理 · 电气工程与系统科学 2026-04-09 Chee-An Yu , Young-Kai Chen , C. -C. Jay Kuo

We demonstrate that in situ coherent diffractive imaging (CDI), which harnesses the coherent interference between a strong and a weak beam illuminating a static and dynamic structure, can be a very dose-efficient imaging method. At low…

光学 · 物理学 2024-05-07 Xingyuan Lu , Minh Pham , Elisa Negrini , Damek Davis , Stanley J. Osher , Jianwei Miao

In this paper we propose a new analytical preintegration theory for graph-based sensor fusion with an inertial measurement unit (IMU) and a camera (or other aiding sensors).Rather than using discrete sampling of the measurement dynamics as…

机器人学 · 计算机科学 2019-03-21 Kevin Eckenhoff , Patrick Geneva , Guoquan Huang

A numerical method based on the transfer matrix technique is developed to calculate the luminescence spectra of complex layered structures with photon recycling. Using this method we show a strong dependence of the emission spectra on the…

材料科学 · 物理学 2015-06-24 V. V. Nikolaev , M. E. Portnoi , I. Eliashevich

Graphene has attracted enormous interests due to its unique physical, mechanical, and electrical properties. Specially, graphene-based field-effect transistors (FETs) have evolved rapidly and are now considered as an option for conventional…

介观与纳米尺度物理 · 物理学 2017-03-30 Nianduan Lu , Lingfei Wang , Ling Li , Ming Liu