Results 31 to 40 of about 27,968 (274)
Design of a Prism-Grating Wide Spectral Range Transmittance Imaging Spectrometer
Sensors, 2023 As spectroscopic detection technology rapidly advances, back-illuminated InGaAs detectors with a wider spectral range have emerged. Compared to traditional detectors such as HgCdTe, CCD, and CMOS, InGaAs detectors offer a working range of 400–1800 nm and
Xu Zhang +6 more
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An all metasurface-based fiber needle probe for Raman spectroscopy
Frontiers in Physics, 2022 Optical fiber-based spectroscopy sensors are widely used for industrial and biomedical applications. They normally consist of at least one excitation fiber and one collection fiber.
Shuyan Zhang +6 more
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Exploring EEG Effective Connectivity Network in Estimating Influence of Color on Emotion and Memory
Frontiers in Neuroinformatics, 2019 Color is a perceptual stimulus that has a significant impact on improving human emotion and memory. Studies have revealed that colored multimedia learning materials (MLMs) have a positive effect on learner’s emotion and learning where it was assessed by ...
Meei Tyng Chai +6 more
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Doublet Metalens with Simultaneous Chromatic and Monochromatic Correction in the Mid-Infrared
Sensors, 2022 Metalenses provide a powerful paradigm for mid-infrared (MIR) imaging and detection while keeping the optical system compact. However, the design of MIR metalenses simultaneously correcting chromatic aberration and off-axis monochromatic aberration ...
Yi Zhou +5 more
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Manipulating light transmission and absorption via an achromatic reflectionless metasurface
PhotoniX, 2023 Freely switching light transmission and absorption via an achromatic reflectionless screen is highly desired for many photonic applications (e.g., energy-harvesting, cloaking, etc.), but available meta-devices often exhibit reflections out of their ...
Xiaoying Zheng +5 more
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Metalens-Based Miniaturized Optical Systems
Micromachines, 2019 Metasurfaces have been studied and widely applied to optical systems. A metasurface-based flat lens (metalens) holds promise in wave-front engineering for multiple applications.
Bo Li, Wibool Piyawattanametha, Zhen Qiu
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Achromatic color categories [PDF]
Perception & Psychophysics, 1985 Sternheim and Boynton’s (1966) continuous judgmental color-naming technique was used to assess the elemental nature of achromatic colors. Results from three subjects indicate that the names “black” and “white” are necessary and sufficient to describe achromatic test lights associated with the name “gray.” On the basis of the criteria that establishes a
P C, Quinn, B R, Wooten, E J, Ludman
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Study of achromatic beamline design for laser-driven femtosecond electron beams
He jishu, 2023 BackgroundThe electron beams produced by laser plasma acceleration have excellent quality for pulse lengths of the order of fs. Due to the existence of a strong laser field, there are difficulties in direct applications, and more applications need to ...
ZHU Jungao +7 more
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High-Efficiency Achromatic Metalens Topologically Optimized in the Visible
Nanomaterials, 2023 Metalens, composed of arrays of nano-posts, is an ultrathin planar optical element used for constructing compact optical systems which can achieve high-performance optical imaging by wavefront modulating.
Lijuan Zhang +5 more
semanticscholar +1 more source