Results 11 to 20 of about 1,221,918 (286)
Differential wavefront curvature sensor [PDF]
SPIE Proceedings, 2005 In this paper, a wavefront curvature sensor is presented. This sensor is based on the measurements of the differentials of wavefront slopes, where the wavefront slope measurements can be achieved by a Shack-Hartmann sensor. A Shack-Hartmann sensor with three output collimated beams will be introduced with a lenslet array installed in each beam.
Zou, Weiyao, Rolland, Jannick
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Self‐Calibrated Flexible Holographic Curvature Sensor [PDF]
Advanced Materials TechnologiesAbstractOptical curvature sensors find regular use in deformation analysis, typically requiring pre‐calibration and post‐processing of the gathered data. In this work, a self‐calibrated curvature sensor based on flexible holographic metasurfaces operating in the visible range is presented. In contrast to existing solutions, the sensor can be fabricated
Xiao, Jianling +3 more
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Differential phase tracking applied to Bragg gratings in multi-core fibre for high accuracy curvature measurement [PDF]
, 2006 High resolution quasi-static and dynamic curvature measurements are made by differential interferometric phase measurement of fibre Bragg gratings in separate cores of a multi-core fibre.
Flockhart, G M H +8 more
core +4 more sources
Ultra-high-sensitivity two-dimensional bend sensor [PDF]
, 2006 A multicore fibre Fabry-Perot-based strain sensor interrogated with tandem interferometry for bend measurement is described. Curvature in two dimensions is obtained by measuring the difference in strain between three co-located low finesse Fabry-Perot ...
Flockhart, G M H +4 more
core +4 more sources
Applied Sciences, 2022 Active railway vehicles such as tilting trains and active steering bogies are being developed to improve the curve running performance of railway vehicles.
Hyun Moo Hur +3 more
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IEEE Photonics Journal, 2021 A microfiber Mach-Zehnder interferometer (MMZI) with two spindle-shaped structures was reported for measuring temperature and curvature. Due to the core-separated structure, the MMZI could excite more high-order modes, which improves the sensitivity more
Xiaojun Zhu +6 more
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Automatic sensitivity adjustment for a curvature sensor [PDF]
Applied Optics, 2010 There are different techniques to sense the wavefront phase-distortions due to atmospheric turbulence. Curvature sensors are practical in their sensitivity being adjustable to the prevailing atmospheric conditions. Even at the best sites, the turbulence intensity has been found to vary at times over only a few minutes and regularly over longer periods.
Kellerer, Aglae +2 more
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Development of a micro flow sensor for microfluidic systems [PDF]
, 2011 This paper was presented at the 3rd Micro and Nano Flows Conference (MNF2011), which was held at the Makedonia Palace Hotel, Thessaloniki in Greece.
Ching, CY +3 more
core +6 more sources
Evaluating populations of tactile sensors for curvature discrimination [PDF]
2010 IEEE Haptics Symposium, 2010 The high density of receptors in fingertip skin is a limiting factor for replicating tactile feedback for neural prosthetics. At present, the large size of engineered sensors and the dense network of neural connections from finger to brain inhibit duplicating the approximately 100 receptors/cm(2).
Isabelle I. Rivest, Gregory J. Gerling
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Real-Time Curvature Measurement Sensor for Active Steering of Railroad Vehicles [PDF]
한국정밀공학회지, 2019 Conventional railroad vehicles, that run on a line with high frequency of sharp curves, have problems such as wheel noise and wear, from insufficient passive steering.
Dahoon Ahn, Hyunmoo Hur, Yujeong Shin
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