Results 11 to 20 of about 3,580,467 (256)

Precision Engineering behind European Astronomy Programmes [PDF]

open access: yes, 2011
The fields of astronomy science have presented significant precision engineering challenges. Numerous solutions for these fields of science have achieved unprecedented levels of accuracy, sensitivity and sheer scale.
Shore, Paul, Tonnellier, Xavier
core   +7 more sources

Maximizing precision over extended unambiguous range for TOF range imaging systems [PDF]

open access: yes, 2010
The maximum unambiguous range for time-of-flight range imaging systems is inversely proportional to the chosen modulation frequency. However, increasing the unambiguous range by decreasing the modulation frequency will generally also degrade the range ...
Payne, Andrew D.   +7 more
core   +1 more source

3D Measurement and Characterization of Ultra-precision Aspheric Surfaces [PDF]

open access: yes, 2014
Aspheric surfaces have become widely used in various fields ranging from imaging systems to energy and biomedical applications. Although many researches have been conducted to address their manufacturing and measurement, there are still challenges in ...
ANWER, Nabil   +11 more
core   +1 more source

Improved measurement linearity and precision for AMCW time-of-flight range imaging cameras [PDF]

open access: yes, 2010
Time-of-flight range imaging systems utilizing the amplitude modulated continuous wave (AMCW) technique often suffer from measurement nonlinearity due to the presence of aliased harmonics within the amplitude modulation signals.
Michael J. Cree   +7 more
core   +1 more source

Precision measurement of the B+c meson mass [PDF]

open access: yes, 2020
A precision measurement of the Bc+ meson mass is performed using proton- proton collision data collected with the LHCb experiment at centre-of-mass energies of 7, 8 and 13 TeV, corresponding to a total integrated luminosity of 9.0 fb−1.
Onderwater, C. J. G.   +3 more
core   +2 more sources

Design and Development of an Optical Chip Interferometer For High Precision On-Line Surface Measurement [PDF]

open access: yes
Advances in manufacturing and with the demand of achieving faster throughput at a lower cost in any industrial setting have put forward the need for embedded metrology.
Kumar, Prashant
core   +3 more sources

Concept and architecture of a new apparatus for cylindrical form measurement with a nanometric level of accuracy [PDF]

open access: yes, 2012
In relation to the industrial need and to the progress of technology, Laboratoire National de M´etrologie et d’Essais (LNE) would like to improve the measurement of its primary pressure standards, spherical and flick standards.
David, Jean Marie   +5 more
core   +1 more source

Measurement uncertainty consideration in the case of nonlinear models for precision length measurement [PDF]

open access: yes, 2015
The requirements on the precision lengths and precision load measurement rise due to the rapid technical development, in particular of nanotechnologies and precision optics.
Manske, Eberhard   +2 more
core   +1 more source

Experimental study on harmonic mode-locking in soliton fiber lasers by bidirectional adjustment of pump power [PDF]

open access: yesNanotechnology and Precision Engineering
Harmonic mode-locking (HML) in soliton fiber lasers is crucial for generating high-repetition-rate pulse trains beyond the fundamental cavity frequency, enabling advanced applications in, for example, optical communication and precision sensing. However,
Citian Zhang   +3 more
doaj   +1 more source

Second‐Harmonic Generation in Strained Silicon Metasurfaces

open access: yesAdvanced Photonics Research, 2022
Dielectric metasurfaces supporting Mie resonances can allow significantly boosted and tailored nonlinear light–matter interactions at the nanoscale. However, nonlinear dielectric metasurfaces typically only have odd‐order nonlinearities, unless resorting
Yun Zhao   +6 more
doaj   +1 more source

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