Results 31 to 40 of about 3,478,957 (237)

Micro-3D printed miniaturized systems for optical trapping and manipulation

, 2022
Optical tweezers (OT) are non-destructive, contactless tools that use light to trap and manipulate microscopic objects. We design and fabricate miniaturized systems that provide new optical trapping and manipulation tools. Our work takes advantage of the
Liberale, Carlo
core   +1 more source

An Asymmetric Feature Enhancement Network for Multiple Object Tracking of Unmanned Aerial Vehicle

Remote Sensing, 2023
Multiple object tracking (MOT) in videos captured by unmanned aerial vehicle (UAV) is a fundamental aspect of computer vision. Recently, the one-shot tracking paradigm integrates the detection and re-identification (ReID) tasks, striking a balance ...
Jianbo Ma, Dongxu Liu, Senlin Qin, Ge Jia, Jianlin Zhang, Zhiyong Xu   +5 more
doaj   +1 more source

Giant Optical Manipulation

Physical Review Letters, 2010
We demonstrate a new principle of optical trapping and manipulation increasing more than 1000 times the manipulation distance by harnessing strong thermal forces while suppressing their stochastic nature with optical vortex beams. Our approach expands optical manipulation of particles into a gas media and provides a full control over trapped particles,
Shvedov, Vladlen, Rode, Andrei V, Izdebskaya, Yana, Desyatnikov, Anton S, Krolikowski, Wieslaw, Kivshar, Yuri   +5 more
openaire   +3 more sources

Evetac: An Event-Based Optical Tactile Sensor for Robotic Manipulation [PDF]

IEEE Transactions on robotics, 2023
Optical tactile sensors have recently become popular. They provide high spatial resolution, but struggle to offer fine temporal resolutions. To overcome this shortcoming, we study the idea of replacing the RGB camera with an event-based camera and ...
Niklas Funk, E. Helmut, G. Chalvatzaki, R. Calandra, Jan Peters   +4 more
semanticscholar   +1 more source

Bayesian Model for 3D Undulating Terrain Depth Estimation Using Photon Counting LiDAR

Remote Sensing, 2023
Photon counting LiDAR can capture the 3D information of long-distance targets and has the advantages of high sensitivity and high resolution. However, the noise counts restrict improvements in the photon counting imaging quality.
Rui Wang, Bo Liu, Zhikang Li, Hao Yi, Zeyu Guo, Zhen Chen   +5 more
doaj   +1 more source

Acoustic Devices for Particle and Cell Manipulation and Sensing [PDF]

, 2014
An emerging demand for the precise manipulation of cells and particles for applications in cell biology and analytical chemistry has driven rapid development of ultrasonic manipulation technology.
Hughes, David, Sylvia Gebhardt, Poltarjonoks, Romans, Sandy Cochran, David A. Hughes, Cochran, Sandy, Aleksandrs Bolhovitins, Gebhardt, Sylvia, Han Wang, Romans Poltarjonoks, Martyn Hill, Schönecker, Andreas, Peter Glynne-Jones, Christine Demore, Christine E. M. Demore, Weijer, Kees; id_orcid, Kees Weijer, Hill, Martyn, Hughes, David A., Glynne-Jones, Peter, Demore, Christine E. M., Bolhovitins, Aleksandrs, Yongqiang Qiu, Demore, Christine, David Hughes, Andreas Schönecker, Qiu, Yongqiang, Wang, Han, Weijer, Kees   +28 more
core   +1 more source

A Method Based on Time-Scale Factor for Correcting the Nonlinear Frequency Sweeping in an OFDR System

IEEE Photonics Journal, 2019
A data processing method for correcting the frequency sweeping nonlinearity of a tunable laser in an optical frequency domain reflectometry system is presented.
Jingjing Xing, Ying Zhang, Feng Wang, Kunpeng Feng, Yixin Zhang, Zhijun Yan, Xuping Zhang   +6 more
doaj   +1 more source

Plasma Figure Correction Method Based on Multiple Distributed Material Removal Functions

Micromachines, 2023
In the process of plasma figure correction for a quartz sub-mirror, the plasma parallel removal process and ink masking layer are combined for the first time.
Xiang Wu, Bin Fan, Qiang Xin, Qian Luo, Junming Shao, Guohan Gao, Peiqi Jiao   +6 more
doaj   +1 more source

Optically controlled grippers for manipulating micron-sized particles [PDF]

, 2007
We report the development of a joystick controlled gripper for the real-time manipulation of micron-sized objects, driven using holographic optical tweezers (HOTs).
Barron, L., Padgett, Miles, Miles Padgett, Beck, F., Louise Barron, Gibson, G., Gibson, Graham, Fiona Beck, Whyte, G., Graham Gibson, Padgett, M., Graeme Whyte, Beck, Fiona, Whyte, Graeme, Barron, Louise   +14 more
core   +1 more source

Performance Optimization for Phase-Sensitive OTDR Sensing System Based on Multi-Spatial Resolution Analysis

Sensors, 2018
This paper proposes and demonstrates a phase-sensitive optical time domain reflectometry (Φ-OTDR) sensing system with multi-spatial resolution (MSR) analysis property.
Yuanyuan Shan, Wenbin Ji, Qing Wang, Lu Cao, Feng Wang, Yixin Zhang, Xuping Zhang   +6 more
doaj   +1 more source