Results 71 to 80 of about 6,351,115 (360)

Fresnel Interferometric Imager: ground-based prototype

, 2009
The Fresnel Interferometric Imager is a space-based astronomical telescope project yielding milli-arc second angular resolution and high contrast images with loose manufacturing constraints.
Baez, Baez, Chesnokov, Faklis, Faklis, Guyon, Hasman, Hyde, Kipp, Koechlin, Koechlin, Levy, Nisenson, Serre, Soret, Swanson   +15 more
core   +1 more source

Physics of chromatic focusing, post-acceleration and bunching of laser-driven proton beams in helical coil targets

Plasma Physics and Controlled Fusion, 2020
To increase the fluence and maximum energy of laser-driven proton beams in view of potential applications such as isochoric heating of dense material or isotope production, it has been proposed to attach a helical coil normally to the rear side of the ...
M. Bardon, J. Moreau, L. Romagnani, C. Rousseaux, M. Ferri, F. Lefèvre, I. Lantuéjoul, B. Etchessahar, S. Bazzoli, D. Farcage, H. Maskrot, F. Serres, M. Chevrot, E. Loyez, E. Veuillot, W. Cayzac, B. Vauzour, G. Boutoux, G. Sary, A. Compant La Fontaine, L. Gremillet, A. Poyé, E. D. 'humières, V. Tikhonchuk   +23 more
semanticscholar   +1 more source

Purcell‐Enhanced Spectrally Precise Emission in Dual‐Microcavity Organic Light‐Emitting Diodes

Advanced Functional Materials, EarlyView.
Spectrally precise emission from broadband organic light‐emitting diodes is realized via a dual‐microcavity strategy. This architecture achieves narrowband emission (full width at half maximum, FWHM = 21 nm) with ultrapure color approaching BT.2020 by enhancing the Purcell effect via coupling of excitons with dual‐microcavity resonance.
Jun Yong Kim, Sang Youn Lee, Kwan Hyun Cho, Yun Seon Do   +3 more
wiley   +1 more source

Spatial Facilitation by Color and Luminance Edges: Boundary, Surface, and Attentional Factors [PDF]

, 1998
The thresholds of human observers detecting line targets improve significantly when the targets are presented in a spatial context of collinear inducing stimuli. This phenomenon is referred to as 'spatial facilitation', and may reflect the output of long-
Dresp, Birgitta, Grossberg, Stephen
core   +1 more source

Smarter Sensors Through Machine Learning: Historical Insights and Emerging Trends across Sensor Technologies

Advanced Functional Materials, EarlyView.
This review highlights how machine learning (ML) algorithms are employed to enhance sensor performance, focusing on gas and physical sensors such as haptic and strain devices. By addressing current bottlenecks and enabling simultaneous improvement of multiple metrics, these approaches pave the way toward next‐generation, real‐world sensor applications.
Kichul Lee, Osman Gul, Yeongjae Kwon, Jaeseok Jeong, Seokjoo Cho, Jihyeon Ahn, Jehee Yu, Cheolmin Kim, Donho Lee, Hyeonseok Han, Byeongju Lee, Jungrak Choi, Ji‐Hwan Ha, Yongrok Jeong, Kyungnam Kang, Ali Javey, Junseong Ahn, Inkyu Park   +17 more
wiley   +1 more source

On the Mathematics of Music: From Chords to Fourier Analysis [PDF]

, 2013
Mathematics is a far reaching discipline and its tools appear in many applications. In this paper we discuss its role in music and signal processing by revisiting the use of mathematics in algorithms that can extract chord information from recorded music.
Lenssen, Nathan, Needell, Deanna
core  

Debye representation of dispersive focused waves [PDF]

, 2006
We report on a matrix-based diffraction integral that evaluates the focal field of any diffraction-limited axisymmetric complex system. This diffraction formula is a generalization of the Debye integral applied to apertured focused beams, which may be ...
Amako, Ashman, Barad, Bartels, Carlos J. Zapata-Rodríguez, Cernusca, Codling, Collet, Collins, Corkum, Dharmadhikari, Gbur, Ibragimov, Kempe, Kempe, Konig, Lancis, Lancis, Levy, Li, Martínez-Corral, Moreno, Morris, Oron, Pearce, Sheppard, Wadsworth, Wolf, Yura, Zapata-Rodríguez, Zapata-Rodríguez, Zapata-Rodríguez, Zapata-Rodríguez, Zeng, Zhu   +34 more
core   +2 more sources

Multimodal Structural Color Graphics Based on Colloidal Photonic Microdome Arrays

Advanced Functional Materials, EarlyView.
A hybrid photonic system combining colloidal crystals and microscale domes is designed to achieve four switchable optical states via the interplay of Bragg reflection and TIR interference. The graphics composed of the photonic microdome arrays provide tunable, angle‐sensitive structural coloration and concealed‐to‐revealed transitions, offering a ...
Jun‐Gu Kang, Hwan‐Young Lee, Chaerim Son, Hyeonbin Jo, Shin‐Hyun Kim   +4 more
wiley   +1 more source

Effect of High-Power Ultrasound Treatment on Bioactive Compound Content and Chromatic Characteristics of Red Wines

Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca: Food Science and Technology
The objective of this work was to investigate, at a laboratory scale, the effect of ultrasound treatment (frequency 20 kHz) on the extraction of total phenolic compounds and monomeric anthocyanins from crushed Merlot grapes in order to reduce maceration
Alina MAIER, Vasile PADUREANU, Mirabela LUPU, Cristina CANJA, Geronimo Raducu BRANESCU, Cristina PADUREANU, Mariana-Atena POIANA   +6 more
doaj   +1 more source

Miniature optical planar camera based on a wide-angle metasurface doublet corrected for monochromatic aberrations

, 2016
Optical metasurfaces are two-dimensional arrays of nano-scatterers that modify optical wavefronts at subwavelength spatial resolution. They are poised to revolutionize optics by enabling complex low-cost systems where multiple metasurfaces are ...
Arbabi, Amir, Arbabi, Ehsan, Faraon, Andrei, Han, Seunghoon, Horie, Yu, Kamali, Seyedeh Mahsa   +5 more
core   +1 more source