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We present a fully-explicit, iteration-free, weakly-compressible method to simulate immiscible incompressible two-phase flows. To update pressure, we circumvent the computationally expensive Poisson equation and use the general pressure…

Fluid Dynamics · Physics 2024-06-03 Hormuzd Bodhanwalla , Dheeraj Raghunathan , Y. Sudhakar

M\"ossbauer spectroscopy is a technique employed to investigate the microscopic properties of materials using transitions between energy levels in the nuclei. Conventionally, in synchrotron-radiation-based M\"ossbauer spectroscopy, the…

Computational Physics · Physics 2026-02-23 Binsheu Shieh , Ryo Masuda , Satoshi Tsutsui , Shun Katakami , Kenji Nagata , Masaichiro Mizumaki , Masato Okada

Polarimetric imaging has been applied in a growing number of applications in robotic vision (ex. underwater navigation, glare removal, de-hazing, object classification, and depth estimation). One can find on the market RGB Polarization…

Computer Vision and Pattern Recognition · Computer Science 2022-08-30 Joaquin Rodriguez , Lew Lew-Yan-Voon , Renato Martins , Olivier Morel

Nanoparticles levitated by optical fields under vacuum conditions have applications in quantum science, the study of nanothermodynamics and precision sensing. Existing techniques for loading optical traps require ambient conditions, and…

Quantum Physics · Physics 2022-09-21 Maryam Nikkhou , Yanhui Hu , James A. Sabin , James Millen

Accurately calibrating light field camera is essential to its applications. Rapid progress has been made in this area in the past decades. In this paper, detailed analysis was first performed towards the state of the art projection models…

Computer Vision and Pattern Recognition · Computer Science 2021-03-11 Dongyang Jin , Saiping Zhang , Xiao Huo , Wei Zhang , Fuzheng Yang

This approach permits much finer adjustments of the beam direction and position when compared to other beam steering techniques of the same mechanical precision. This results in a much increased precision, accuracy and mechanical stability.…

Instrumentation and Methods for Astrophysics · Physics 2019-07-25 G. Drougakis , K. G. Mavrakis , S. Pandey , G. Vasilakis , K. Poulios , D. G. Papazoglou , W. von Klitzing

In Micro-electro-mechanical Systems (MEMS) based pressure sensors and acoustic devices, deflection of a membrane is utilized for pressure or sound measurements. Due to advantages of capacitive pressure sensor over piezoresistive pressure…

Applied Physics · Physics 2019-08-29 Rishabh Bhooshan Mishra , S Santosh Kumar , Ravindra Mukhiya

We present an optical flow estimation approach that operates on the full four-dimensional cost volume. This direct approach shares the structural benefits of leading stereo matching pipelines, which are known to yield high accuracy. To this…

Computer Vision and Pattern Recognition · Computer Science 2017-04-26 Jia Xu , René Ranftl , Vladlen Koltun

Recently introduced, spaceplates achieve the propagation of light for a distance greater than their thickness. In this way, they compress optical space, reducing the required distance between optical elements in an imaging system. Here we…

Optics · Physics 2023-06-01 Nicholas J. Sorensen , Michael T. Weil , Jeff S. Lundeen

Most sensor setups for onboard autonomous perception are composed of LiDARs and vision systems, as they provide complementary information that improves the reliability of the different algorithms necessary to obtain a robust scene…

Robotics · Computer Science 2022-03-16 Jorge Beltrán , Carlos Guindel , Arturo de la Escalera , Fernando García

Multi-view capture systems are complex systems to engineer. They require technical knowledge to install and intricate processes to setup related mainly to the sensors' spatial alignment (i.e. external calibration). However, with the ongoing…

Computer Vision and Pattern Recognition · Computer Science 2019-09-04 Vladimiros Sterzentsenko , Antonis Karakottas , Alexandros Papachristou , Nikolaos Zioulis , Alexandros Doumanoglou , Dimitrios Zarpalas , Petros Daras

Optical downconversion is widely used for generating photon pairs, squeezed and entangled states of light, making it an indispensable tool in quantum optics and quantum information. In the regime where the pump is much stronger than the…

Quantum Physics · Physics 2025-10-14 D. B. Horoshko , V. S. Shchesnovich

An all-optical detection method for the detection of acoustic pressure waves is demonstrated. The detection system is based on a stripped (bare) single-mode fiber. The fiber vibrates as a standard cantilever and the optical output from the…

Instrumentation and Detectors · Physics 2016-11-03 Philip G. Westergaard , Mikael Lassen

By employing at recent proposal (R. Filip, P. Marek and U.L. Andersen, Phys. Rev. A {\bf 71}, 042308 (2005) \cite{Filip05.pra}), we experimentally demonstrate a universal, deterministic and high-fidelity squeezing transformation of an…

In this paper, we discuss an experimental layout for the two-crystals scenario at the Super Proton Synchrotron (SPS) accelerator. The research focuses on a fixed target setup at the circulating machine in a frame of the Physics Beyond…

Mechanical oscillators are at the heart of many sensor applications. Recently several groups have developed oscillators that are probed optically, fabricated from high-stress silicon nitride films. They exhibit outstanding force…

Optics · Physics 2017-04-13 Jingkun Guo , Richard A. Norte , Simon Gröblacher

A LED-based fiber calibration system for the ProtoDUNE-Dual Phase (DP) photon detection system (PDS) has been designed and validated. ProtoDUNE-DP is a 6x6x6 m3 liquid argon time-projection-chamber currently being installed at the Neutrino…

This paper shows a novel method to precisely measure the laser power using an optomechanical system. By measuring a mirror displacement caused by the reflection of an amplitude modulated laser beam, the number of photons in the incident…

Instrumentation and Detectors · Physics 2014-01-28 Kazuhiro Agatsuma , Daniel Friedrich , Stefan Ballmer , Giulia DeSalvo , Shihori Sakata , Erina Nishida , Seiji Kawamura

The precise knowledge of the atomic masses of light atomic nuclei, e.g. the proton, deuteron, triton and helion, is of great importance for several fundamental tests in physics. However, the latest high-precision measurements of these…

Light pressure effect has been discovered long ago and has been used as an optical method to manipulate microand nanoparticles. It is usually considered as a nonresonant effect determined by the transfer of the momentum of light. However,…

Optics · Physics 2015-03-03 Yangcheng Li , Alexey V. Maslov , Ana Jofre , Vasily N. Astratov