Results 81 to 90 of about 504,859 (272)
Optically actuated two position mechanical mover [PDF]
, 1974 An optically actuated mechanical mover adapted to be moved from an ambient position to an active position, is disclosed. The mechanical mover essentially comprises a piston/cylinder arrangement including a piston that is contained within an internal ...
Murphy, A. J., Yang, L. C.
core +1 more source
, 2005 Numerical simulations of atmospheric turbulence and AO wavefront correction are performed to investigate the timescale for fringe motion in optical interferometers with spatial filters.
Baldwin +8 more
core +1 more source
Enhanced Performance 3‐D Printed PLA Parts through a Photo‐Initiator Mediated UV‐Curing
Advanced Materials Technologies, EarlyView.This solvent‐free method enhances 3‐D printed PLA parts by incorporating photo‐initiators during fabrication, followed by up to 3 min UV treatment. This process improves PLA's mechanical properties, including a 64% increase in tensile strength, while addressing weak interlayer bonding and outdoor sensitivity.
Dylan Jubinville, Tizazu H. Mekonnen
wiley +1 more source
3-beam self-calibrated Kernel nulling photonic interferometer [PDF]
arXiv, 2022 The use of interferometric nulling for the direct characterization of extrasolar planets is an exciting prospect, but one that faces many practical challenges when deployed on telescopes. The largest limitation is the extreme sensitivity of nullers to any residual optical path differences between the incoming telescope beams even after adaptive optics ...
arxiv
End‐to‐End Optimization of Metalens for Broadband and Wide‐Angle Imaging
Advanced Optical Materials, Volume 13, Issue 9, March 21, 2025.A straightforward hardware architecture is adopted, featuring an aperture stop inserted in front of the metalens to provide additional design flexibility for mitigating monochromatic aberrations. This enables high signal‐to‐noise ratio measurements and reduces the load on the reconstruction network. Additionally, an end‐to‐end optimization framework is
Yeongmyeong Park +7 more
wiley +1 more source
Advanced Photonics Research, EarlyView.This work presents a systematic review of atmospheric turbulence fundamentals, including theoretical formulations and adaptive optics‐based mitigation strategies. This includes an in‐depth examination of the devices, theories, and methodologies associated with traditional correction approaches.
Qinghui Liu +5 more
wiley +1 more source
Large amplitude tip/tilt estimation by geometric diversity for multiple-aperture telescopes
, 2017 A novel method nicknamed ELASTIC is proposed for the alignment of multiple-aperture telescopes, in particular segmented telescopes. It only needs the acquisition of two diversity images of an unresolved source, and is based on the computation of a ...
Cassaing, F. +2 more
core +1 more source
Machine Learning‐Enhanced Optimization for High‐Throughput Precision in Cellular Droplet Bioprinting
Advanced Science, EarlyView.A high‐throughput droplet‐based cellular bioprinting platform enhanced with machine learning optimizes five key printing parameters—bioink viscosity, nozzle size, printing time, printing pressure, and cell concentration—to enable accurate prediction of droplet size.
Jaemyung Shin +7 more
wiley +1 more source
Work and energy gain of heat-pumped quantized amplifiers
, 2013 We investigate heat-pumped single-mode amplifiers of quantized fields in high-Q cavities based on non-inverted two-level systems. Their power generation is shown to crucially depend on the capacity of the quantum state of the field to accumulate useful ...
Alicki, Robert +2 more
core +1 more source
Advanced Science, Volume 12, Issue 14, April 10, 2025.This study focuses on the early diagnosis of CVDs through pulse waveforms, requiring wearable devices to achieve high‐fidelity monitoring of pulse waves from the body surface. Knitted strain sensors are optimized in terms of mechanical adaptation and adhesion capability.
Zhongda Chen +6 more
wiley +1 more source