Applied Sciences, 2021 A novel method is proposed for measuring the six degrees-of-freedom (DOF) geometric motion errors of a rotary axis based on a polyhedral prism. An error-sensitive unit which consists of a polyhedral prism and a planar reflector, is designed to carry out ...
Dong Ma +5 more
doaj +1 more source
Perovskite Solar Cells Based on Compact, Smooth FA0.1MA0.9PbI3 Film with Efficiency Exceeding 22%
Nanoscale Research Letters, 2020 The utilization of mixed cations is beneficial for taking the advantages of cations and achieving highly efficient perovskite solar cells (PSCs). Herein, the precisely small incorporation of CH(NH2)2 (FA) cations in methyl ammonium lead iodide (MAPbI3 ...
Ayman Maqsood +6 more
doaj +1 more source
Recent Advances in Wayside Railway Wheel Flat Detection Techniques: A Review
Sensors, 2023 Wheel flats are amongst the most common local surface defect in railway wheels, which can result in repetitive high wheel–rail contact forces and thus lead to rapid deterioration and possible failure of wheels and rails if not detected at an early stage.
Wenjie Fu +5 more
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Multi-Color Luminescence Transition of Upconversion Nanocrystals via Crystal Phase Control with SiO2 for High Temperature Thermal Labels [PDF]
, 2020 Upconversion nanocrystals (UCNs)-embedded microarchitectures with luminescence color transition capability and enhanced luminescence intensity under extreme conditions are suitable for developing a robust labeling system in a high-temperature thermal ...
Baek, Dahye +8 more
core +1 more source
Speckle Measurement for Small In-Plane Vibration Using GaAs
Sensors, 2023 In this study, the measurement characteristics of speckles based on the photoinduced electromotive force (photo-emf) effect for high-frequency, small-amplitude, and in-plane vibration were theoretically and experimentally studied.
Jiongye Gao +5 more
doaj +1 more source
Error Analysis of Heterodyne Interferometry Based on One Single-Mode Polarization-Maintaining Fiber
Sensors, 2023 Using polarization-maintaining fiber (PMF) in dual-frequency heterodyne interferometry has the advantages of reducing the laser’s own drift, obtaining high-quality light spots, and improving thermal stability.
Yibin Qian +4 more
doaj +1 more source
Defect-related versus excitonic visible light emission from ion beam synthesized Si nanocrystals in SiO2 [PDF]
, 1996 Two sources of room temperature visible luminescence are identified from SiO2 films containing ion beam synthesized Si nanocrystals. From a comparison of luminescence spectra and photoluminescence decay lifetime measurements between Xe + -implanted SiO2 ...
Atwater, Harry A. +5 more
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Comment on "Delayed luminescence of biological systems in terms of coherent states" [Phys. Lett. A 293 (2002) 93] [PDF]
, 2010 Popp and Yan [F. A. Popp, Y. Yan, Phys. Lett. A 293 (2002) 93] proposed a model for delayed luminescence based on a single time-dependent coherent state.
Brouder, Christian, Salari, Vahid
core +4 more sources
Micro Vibration Measurement with Microscopic Speckle Interferometry Based on Orthogonal Phase
Applied Sciences, 2021 A micro-device vibration measurement method based on microscopic speckle interferometry combined with orthogonal phase is presented. This method utilizes the approximate linear distribution characteristics of orthogonal points (points satisfying the ...
Chenjia Gao +5 more
doaj +1 more source
Molecules, 2020 Nowadays, most blue organic light emitting diodes (OLEDs) are fabricated by using sky-blue emitters which are more easily synthesized when compared with other deep blue emitters. Herein, we put forward a new idea of using an optical micro-cavity based on
Jixin Jiang +6 more
doaj +1 more source