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Advanced Materials, EarlyView.We present elastomeric three‐dimensional (3D) microstructures fabricated via two‐photon polymerization (2PP) and post‐processed through wet etching, for quantifying nanonewton (nN)‐scale forces applied by healthy and diseased neural cells. The mechanically characterized free‐standing beam architectures enable measurement of traction forces of ...
Pieter F. J. van Altena +7 more
wiley +1 more source
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Optical design of a laser tracker
Infrared and Laser Engineering, 2020In order to improve the search range and imaging resolution of the ground target by the laser tracker, a method of searching and tracking the target with a common aperture laser tracker under an airborne platform was presented and the optical system was designed.
纪小辉 Xiaohui Ji
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2017 2nd International Conference for Convergence in Technology (I2CT), 2017
The world is advancing with an exponential rate. The models, methods and techniques which were once considered as to be the best and ever replaceable are being replaced every other day. Same kind of scenario is there in the defence and security sector.
Akshay Singh, Monika Singh
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The world is advancing with an exponential rate. The models, methods and techniques which were once considered as to be the best and ever replaceable are being replaced every other day. Same kind of scenario is there in the defence and security sector.
Akshay Singh, Monika Singh
openaire +2 more sources
Precision Analysis of Flatness Measurement Using Laser Tracker
International Journal of Precision Engineering and Manufacturing, 2022Zou Jingui
exaly +2 more sources
A 3D Passive Laser Tracker for Accuracy Calibration of Robots
IEEE/ASME transactions on mechatronics, 2022Laser trackers are usually used to measure spatial positional error of the moving targets on large-scaled objects, such as the airplane profile. It is a spherical coordinate system with a dual-axis tracking mirror actively controlled by the built-in ...
Z. Lou +5 more
semanticscholar +1 more source
Verification of RTK Positioning of UAVs with High-Precision Laser Tracker
European Conference on Antennas and Propagation, 2022Near-field antenna measurements can be efficiently performed with Unmanned Aerial Vehicles (UAVs). An accurate knowledge of the position of the UAV is needed for determination of the 3D antenna pattern.
P. Henkel +6 more
semanticscholar +1 more source
Proceedings 2002 IEEE International Conference on Robotics and Automation (Cat. No.02CH37292), 2003
Describes a method for real-time tracking of people in everyday environments, using multiple planar laser range-finders. People tracking is a well-studied problem in machine vision; we adapt some of those methods to laser range-finders. We group range measurements into entities such as blobs and objects, and use a Kalman filter to estimate trajectories
Ajo Fod +2 more
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Describes a method for real-time tracking of people in everyday environments, using multiple planar laser range-finders. People tracking is a well-studied problem in machine vision; we adapt some of those methods to laser range-finders. We group range measurements into entities such as blobs and objects, and use a Kalman filter to estimate trajectories
Ajo Fod +2 more
openaire +1 more source
Advanced Solid State Lasers, 1997
A high brightness diode-pumped, Nd-YAG solid state laser has been designed, fabricated, and tested. This phase conjugated master oscillator/power amplifier (MOPA) device produces 20-ns Q-switched pulses at 2500 Hz at an average power of 690 W and a beam quality of 1.1/spl times/DL when the pump diodes are operated at 27.5% duty cycle.
R.J. St. Pierre +13 more
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A high brightness diode-pumped, Nd-YAG solid state laser has been designed, fabricated, and tested. This phase conjugated master oscillator/power amplifier (MOPA) device produces 20-ns Q-switched pulses at 2500 Hz at an average power of 690 W and a beam quality of 1.1/spl times/DL when the pump diodes are operated at 27.5% duty cycle.
R.J. St. Pierre +13 more
openaire +1 more source
Performance evaluation of laser trackers
Proceedings of the 8th Workshop on Performance Metrics for Intelligent Systems, 2008The American Society for Mechanical Engineers (ASME) recently released the ASME B89.4.19 Standard [1] on performance evaluation of spherical coordinate instruments such as laser trackers. At the National Institute of Standards and Technology (NIST), we can perform the complete set of tests described in the Standard, and have done so for a variety of ...
B. Muralikrishnan +5 more
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