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We present a direct measurement of velocity distributions in two dimensions by using an absorption imaging technique in a 3D near resonant optical lattice. The results show a clear difference in the velocity distributions for the different…

量子物理 · 物理学 2009-11-10 Johan Jersblad , Harald Ellmann , Laurent Sanchez-Palencia , Anders Kastberg

This article presents a new optical measurement method employing a HSI (Hue, Saturation and Intensity) colour model to form trapezoidal structured patterns for morphology reconstruction of a measured object at a high speed. Profilometry on…

光学 · 物理学 2015-05-19 L C Chen , X L Nguyen , Y S Shu

Pulsed Laser Deposition (PLD) of homoepitaxial SrTiO3 <001> was studied with in-situ x-ray specular reflectivity and surface diffuse x-ray scattering. Unlike prior reflectivity-based studies, these measurements access both the time- and the…

材料科学 · 物理学 2015-05-14 J. D. Ferguson , G. Arikan , D. S. Dale , A. R. Woll , J. D. Brock

This paper presents a new method to obtain the deformation distribution on the main reflector of an antenna only by measuring the electric intensity on a spherical surface with the focal point as the center of the sphere, regardless of…

天体物理仪器与方法 · 物理学 2021-12-08 Qian Ye , Boyang Wang , Qiang Yao , Jinqing Wang , Qinghui Liu , Zhiqiang Shen

We show that compatibility between the DAMA modulation result (as well as less statistically significant excesses such as the CDMS Silicon effect and the excess claimed by CRESST) with constraints from other experiments can be achieved by…

宇宙学与河外天体物理 · 物理学 2015-12-31 Stefano Scopel , Kook-Hyun Yoon , Jong-Hyun Yoon

Microscopic fringe projection profilometry is a powerful 3D measurement technique with a theoretical measurement accuracy better than one micron provided that the measured targets can be imaged with good fringe visibility. However,…

图像与视频处理 · 电气工程与系统科学 2019-06-26 Yan Hu , Qian Chen , Yichao Liang , Shijie Feng , Tianyang Tao , Chao Zuo

For the past decade, droplet interface bilayers (DIBs) have had an increased prevalence in biomolecular and biophysical literature. However, much of the underlying physics of these platforms are poorly characterized. To further the…

Dynamic optical sensors, as those based on the reflectivity of isotropic dielectrical interfaces, can be useful for measuring small changes in the refractive index of fluid media. Exact and approximated explicit formulas for their…

光学 · 物理学 2023-08-02 German Caro , Eduardo Acosta , Liliana Perez , Francisco Veiras

Accurate knowledge of absorption coefficient of a sample is a prerequisite for measuring the third order optical nonlinearity of materials, which can be a serious limitation for unknown samples. We introduce a method, which measures both…

光学 · 物理学 2007-05-23 A. Sharan , S. Abbas Hosseini , D. Goswami

Variable selection in ultra-high dimensional regression problems has become an important issue. In such situations, penalized regression models may face computational problems and some pre screening of the variables may be necessary. A…

统计方法学 · 统计学 2020-05-01 Abhik Ghosh , Magne Thoresen

In this work, we introduce a new design concept: the DC-Coupled Resistive Silicon Detectors, based on the LGAD technology. This new approach intends to address a few known features of the first generation of AC-Coupled Resistive Silicon…

For homogeneous, isotropic, nonlinearly elastic materials, the form of the homogeneous deformation consistent with the application of a Cauchy shear stress is derived here for both compressible and incompressible materials. It is shown that…

软凝聚态物质 · 物理学 2013-02-12 Michel Destrade , Jerry G. Murphy , Giuseppe Saccomandi

Imposing some flexible sampling scheme we provide some discretization of continuous time discrete scale invariant (DSI) processes which is a subsidiary discrete time DSI process. Then by introducing some simple random measure we provide a…

统计方法学 · 统计学 2016-06-22 S. Rezakhah , Y. Maleki

We present a Deep Differentiable Simplex Layer (DDSL) for neural networks for geometric deep learning. The DDSL is a differentiable layer compatible with deep neural networks for bridging simplex mesh-based geometry representations (point…

计算机视觉与模式识别 · 计算机科学 2019-08-16 Chiyu "Max" Jiang , Dana Lynn Ona Lansigan , Philip Marcus , Matthias Nießner

High precision measurements of stellar spectroscopic line profiles and their changes over time contain very valuable information about the physics of the stellar photosphere (stellar activity) and can be used to characterize extrasolar…

地球与行星天体物理 · 物理学 2017-11-08 John B. P. Strachan , Guillem Anglada-Escude

Droplet impact onto heated surfaces is a widespread process in industrial applications, particularly in the context of spray cooling techniques. Therefore, it is essential to study the complex phenomenon of droplet spreading, heat removal…

流体动力学 · 物理学 2025-03-04 Manish Kumar , Rishav Saha , Johanna Potyka , Kathrin Schulte , Bernhard Weigand

The measurement of weak gravitational lensing is currently limited to a precision of ~10% by instabilities in galaxy shape measurement techniques and uncertainties in their calibration. The potential of large, on-going and future cosmic…

天体物理学 · 物理学 2009-11-10 Richard Massey , Alexandre Refregier , David Bacon

The rise of synoptic sky surveys has ushered in an era of big data in time-domain astronomy, making data science and machine learning essential tools for studying celestial objects. While tree-based models (e.g. Random Forests) and deep…

天体物理仪器与方法 · 物理学 2024-07-26 Siddharth Chaini , Ashish Mahabal , Ajit Kembhavi , Federica B. Bianco

This work proposes an innovative approach to improve Bragg coherent diffraction imaging (BCDI) microscopy applied to time evolving crystals and/or non-homogeneous crystalline strain fields, identified as two major limitations of BCDI…

光学 · 物理学 2024-03-12 I. Calvo-Almazán , V. Chamard , T. Grünewald , M. Allain

Lidar became an important component of the perception systems in autonomous driving. But challenges of training data acquisition and annotation made emphasized the role of the sensor to sensor domain adaptation. In this work, we address the…

计算机视觉与模式识别 · 计算机科学 2023-02-01 Artem Savkin , Yida Wang , Sebastian Wirkert , Nassir Navab , Federico Tombar