Results 161 to 170 of about 864,560 (239)

Strategies for enhancing sensitivity in lateral flow assays

VIEW, EarlyView.
Lateral flow assays (LFAs) are essential for cost‐effective, rapid point‐of‐care diagnostics. However, conventional colourimetric LFAs often lack the sensitivity required for low‐abundance biomarkers. This review evaluates six enhancement strategies: flow modulation, sample preconcentration, advanced reporters, chemical signal amplification, structural
Aylar Eslami Saed, Jacopo Giaretta, Syamak Farajikhah, Fariba Dehghani   +3 more
wiley   +1 more source

Wavefront Sensing for Evaluation of Extreme Ultraviolet Microscopy. [PDF]

Sensors (Basel), 2020
Ruiz-Lopez M, Mehrjoo M, Keitel B, Plönjes E, Alj D, Dovillaire G, Li L, Zeitoun P.   +7 more
europepmc   +1 more source

Comprehensive Design and Experimental Validation of 30 kV Ultra‐Fast Flexible Controllable Arresters for HVDC Systems

High Voltage, EarlyView.
ABSTRACT To effectively suppress transient overvoltages in HVDC systems, the design and experimental validation of a multi‐module series controllable arrester are presented. The voltage‐limiting performance, series voltage equalisation capability, and robustness under fault conditions in high‐voltage scenarios require further research.
Tai Yang, Xiangyu Zhang, Sihang Wu, Lei Qi, Xiang Cui   +4 more
wiley   +1 more source

High speed optical wavefront sensing with low cost fpgas

, 2018
This paper outlines a study into deployment of a parallel processing scheme on an FPGA to meet the needs of high bandwidth processing in adaptive optics wavefront sensing.
Morgan, F., Kepa, K., Coburn, D., Dainty, J.   +3 more
core  

Conductivity Analysis and Thermoelectric Behaviour of Larch Standing Trees Under Lightning Currents: Role of Moisture Distribution and Carrier Motion

High Voltage, EarlyView.
ABSTRACT The direct effects of lightning strikes on forest combustibles form the foundation for predicting lightning‐induced forest fires. Accurate assessment of lightning impact is hindered by limited knowledge of the conduction characteristics of standing larch trees.
Jinru Sun, Xiaomeng Liu, Shu Li, Duanzhou Peng, Xueling Yao, Xiaodong Liu   +5 more
wiley   +1 more source

Large dynamic range Shack-Hartmann wavefront sensing based on a graph-theoretic computational model. [PDF]

Light Sci Appl
Du L, Xu R, Liu S, Shao R, Li L, Zhang Y, Li Z, Qu Y, Tian D, Yang J.   +9 more
europepmc   +1 more source

Machine learning for image-based wavefront sensing

, 2019
peer reviewedHigh-contrast imaging systems in ground-based astronomy rely on a precise control of the wavefront. On one hand, atmospheric turbulence distorts the wavefront which is corrected by a dedicated adaptive optics system. On the other hand, non-
Orban De Xivry, Gilles, Louppe, Gilles, Vanberg, Pierre-Olivier, Absil, Olivier   +3 more
core  

Polynomial‐shaped electrodes for adaptive X‐ray optics

Journal of Synchrotron Radiation, EarlyView.
A shaped electrode design for lithium niobate adaptive X‐ray mirrors connects actuator degrees of freedom to specific polynomial orders, enabling general shape control and the correction of defocus, coma and fourth‐order aberrations with a limited number of inputs.For adaptive mirrors on X‐ray beamlines and optical systems, we describe a strategy for ...
Kenneth A. Goldberg, Francesco Marzari, Grant D. Cutler   +2 more
wiley   +1 more source

Pulse-to-pulse wavefront sensing at free-electron lasers using ptychography. [PDF]

J Appl Crystallogr, 2020
Sala S, Daurer BJ, Odstrcil M, Capotondi F, Pedersoli E, Hantke MF, Manfredda M, Loh ND, Thibault P, Maia FRNC.   +9 more
europepmc   +1 more source

Fundamental Limits to Wavefront Sensing in the Submillimeter

, 2006
With the advent of large-format submillimeter wavelength detector arrays, and a new 25 m diameter submillimeter telescope under consideration, the question of optimal wavefront sensing methods is timely. Indeed, not only should bolometric array detectors
Serabyn, Eugene
core