Results 31 to 40 of about 41,210 (312)
Scientific Reports, 2022 In this study, we proposed and demonstrated a circuit design for solving problems related to blue light leakage (e.g., eye damage) when phosphor-converted white light-emitting diodes (pcW-LEDs) overheat.
Ching-Cherng Sun +6 more
doaj +1 more source
Achromatic linear polarization rotators by tandem twisted nematic liquid crystal cells
Scientific Reports, 2018 An achromatic linear polarization rotator based on a tandem-2ϕ-twisted nematic liquid crystal cell (tandem-2ϕ-TNLC cell, where 2ϕ represents the total twisted angle) is theoretically analyzed and experimentally demonstrated.
Te-Yuan Chung +4 more
doaj +1 more source
Two Practical Methods to Retrieve Aerosol Optical Properties from Coherent Doppler Lidar
Remote Sensing, 2022 Complexly distributed aerosol particles have significant impacts on climate and environmental changes. As one of the vital atmospheric power sources, the wind field deeply affects the distribution and transport of aerosol particles.
Yinchao Zhang +8 more
doaj +1 more source
Crystals, 2021 The multifunctional snapshot angle-resolved spectroscopy (ARS) system capable of electroluminescence, photoluminescence, and reflectance measurements for thin film devices is developed based on the k-space imaging technique.
Jui-Fen Chang +5 more
doaj +1 more source
A Comprehensive Review and Future Perspectives of Nanomaterials in Nonlinear Optics and Photonics
International journal of case studies in business, IT, and educationPurpose: Nanomaterials have sparked a paradigm shift in nonlinear optics and photonics, presenting unparalleled advantages over bulk materials. Their distinctive attributes, encompassing a substantial surface area, customizable optical properties, and ...
S. Aithal, Sreeramana Aithal
semanticscholar +1 more source
Spatial-Coded Phosphor Coating for High-Efficiency White LEDs
IEEE Photonics Journal, 2017 In this paper, a new structure of spatial-coded coating phosphor is proposed and effectively benefits the efficiency enhancement in the white light-emitting diodes (LEDs). The spatial-coded phosphor plate contains two subregions.
Ching-Cherng Sun +7 more
doaj +1 more source
Remote Sensing, 2022 Although the performance of unmanned aerial vehicle (UAV) tracking has benefited from the successful application of discriminative correlation filters (DCF) and convolutional neural networks (CNNs), UAV tracking under occlusion and deformation remains a ...
Yashuo Bai +8 more
doaj +1 more source
Foods, 2023 Fritillaria has a long history in China, and it can be consumed as medicine and food. Owing to the high cost of Fritillaria cirrhosa, traders sometimes mix it with the cheaper Fritillaria thunbergii powder to make profit.
Kai Wei +9 more
doaj +1 more source
Enhancing Stellar Spectroscopy with Extreme Adaptive Optics and Photonics [PDF]
, 2016 Extreme adaptive optics (AO) systems are now in operation across the globe. These systems, capable of high order wavefront correction, deliver Strehl ratios of ∼ 90 % in the near-infrared.
N. Jovanovic +4 more
semanticscholar +1 more source
Advanced Functional Materials, EarlyView.PBTTT‐OR‐R, a C14‐alkoxy/alkyl‐PBTTT polymer derivative, is of substantial interest for optoelectronics due to its specific fullerene intercalation behavior and enhanced charge‐transfer absorption. Comparing this polymer with (S) and without (O) homocoupling defects reveals that PBTTT‐OR‐R(O) forms stable co‐crystals with PC61BM, while PBTTT‐OR‐R(S ...
Zhen Liu +14 more
wiley +1 more source