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136 results on '"Lin, Wei-Hsun"'

9. Circadian rhythm-related factors of PER and CRY family genes function as novel therapeutic targets and prognostic biomarkers in lung adenocarcinoma

Author

Wang, Chin-Chou, primary, Lin, Wei-Hsun, additional, Ku, Su-Chi, additional, Shen, Wan-Jou, additional, Ta, Hoang Dang Khoa, additional, Anuraga, Gangga, additional, Liu, Fang-Wen, additional, Shen, Chiu-Fan, additional, Wang, Shu-He, additional, Yang, Chia-Chen, additional, Wang, Chih-Yang, additional, and Wang, Wei-Jan, additional

Published
2022
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17. Impact Propagation and Absorption Mechanisms in Two Dimensional Colloidal Monolayers

Author

Cha, Jinwoong, Buttinoni, Ivo, Lin, Wei-Hsun, Job, Stéphane, Daraio, Chiara, Isa, Lucio, Eidgenössische Technische Hochschule - Swiss Federal Institute of Technology [Zürich] (ETH Zürich), University of Oxford [Oxford], SUPMECA - Institut supérieur de mécanique de Paris (SUPMECA), Laboratoire QUARTZ (QUARTZ ), Université Paris 8 Vincennes-Saint-Denis (UP8)-SUPMECA - Institut supérieur de mécanique de Paris (SUPMECA)-Ecole Nationale Supérieure de l'Electronique et de ses Applications (ENSEA)-Ecole Internationale des Sciences du Traitement de l'Information (EISTI), California Institute of Technology (CALTECH), and Gestionnaire HAL, ISAE-Supmeca

Subjects
[SPI]Engineering Sciences [physics], [SPI] Engineering Sciences [physics], ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2018

19. The formation mechanisms and optical characteristics of GaSb quantum rings.

Author

Lin, Wei-Hsun, Wang, Kai-Wei, Liao, Yu-An, Pao, Chun-Wei, and Lin, Shih-Yen

Subjects
*QUANTUM electronics, *QUANTUM dots, *SEMICONDUCTOR research, *ADATOMS, *TEMPERATURE
Abstract

The growth mechanisms and optical characteristics of GaSb quantum rings (QRs) are investigated. Although As-for-Sb exchange is the mechanism responsible for the dot-to-ring transition, significant height difference between GaSb quantum dots (QDs) and QRs in a dot/ring mixture sample suggests that the dot-to-ring transition is not a spontaneous procedure. Instead, it is a rapid transition procedure as long as it initiates. A model is established to explain this phenomenon. Larger ring inner diameters and heights of the sample with longer post Sb soaking time suggest that As-for-Sb exchange takes places in both vertical and lateral directions. The decreasing ring densities, enlarged ring inner/outer diameters and eventually flat GaSb surfaces observed with increasing growth temperatures are resulted from enhanced adatom migration and As-for-Sb exchange with increasing growth temperatures. [ABSTRACT FROM AUTHOR]

Published
2013
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21. Dynamic Characterization of Micro-Particle Systems

Author

Lin, Wei-Hsun

Subjects
Colloidal crystals, Pulsed Laser Ablation, Physics, Solitary Waves, Granular, Micro-granular systems, Granular Crystals
Abstract

Ordered granular systems have been a subject of active research for decades. Due to their rich dynamic response and nonlinearity, ordered granular systems have been suggested for several applications, such as solitary wave focusing, acoustic signals manipulation, and vibration absorption. Most of the fundamental research performed on ordered granular systems has focused on macro-scale examples. However, most engineering applications require these systems to operate at much smaller scales. Very little is known about the response of micro-scale granular systems, primarily because of the difficulties in realizing reliable and quantitative experiments, which originate from the discrete nature of granular materials and their highly nonlinear inter-particle contact forces. In this work, we investigate the physics of ordered micro-granular systems by designing an innovative experimental platform that allows us to assemble, excite, and characterize ordered micro-granular systems. This new experimental platform employs a laser system to deliver impulses with controlled momentum and incorporates non-contact measurement apparatuses to detect the particles’ displacement and velocity. We demonstrated the capability of the laser system to excite systems of dry (stainless steel particles of radius 150 micrometers) and wet (silica particles of radius 3.69 micrometers, immersed in fluid) micro-particles, after which we analyzed the stress propagation through these systems. We derived the equations of motion governing the dynamic response of dry and wet particles on a substrate, which we then validated in experiments. We then measured the losses in these systems and characterized the collision and friction between two micro-particles. We studied wave propagation in one-dimensional dry chains of micro-particles as well as in two-dimensional colloidal systems immersed in fluid. We investigated the influence of defects to wave propagation in the one-dimensional systems. Finally, we characterized the wave-attenuation and its relation to the viscosity of the surrounding fluid and performed computer simulations to establish a model that captures the observed response. The findings of the study offer the first systematic experimental and numerical analysis of wave propagation through ordered systems of micro-particles. The experimental system designed in this work provides the necessary tools for further fundamental studies of wave propagation in both granular and colloidal systems.

Published
2016
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25. The influence of In composition on InGaAs-capped InAs/GaAs quantum-dot infrared photodetectors.

Author

Lin, Wei-Hsun, Chao, Kuang-Ping, Tseng, Chi-Che, Mai, Shu-Cheng, Lin, Shih-Yen, and Wu, Meng-Chyi

Subjects
*OPTOELECTRONIC devices, *INFRARED detectors, *QUANTUM dots, *GALLIUM arsenide, *INDIUM arsenide, *INDIUM, *SUBSTRATES (Materials science)
Abstract

The influence of an additional InGaAs-capped layer on the performance of InAs/GaAs quantum-dot infrared photodetectors (QDIPs) is investigated. For the device with a 15% InGaAs-capped layer, a significant response at 7.9 μm is observed for the QDIP device. The results suggest that with the additional InGaAs-capped layer, the detection wavelengths of the InAs/GaAs QDIPs could be shifted to a longer-wavelength infrared range. A further increase in the In composition will not help to obtain an even longer-wavelength detection, which is attributed to the cancellation of a lower InGaAs state, and InAs-QD bandgap shrinkage resulted from the relaxed compressive strains of the InGaAs layer with a higher In composition. [ABSTRACT FROM AUTHOR]

Published
2009
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26. 800 meV localization energy in GaSb/GaAs/Al0.3Ga0.7As quantum dots

Author

Nowozin, Tobias, Bonato, Leo, Högner, A., Wiengarten, A., Bimberg, Dieter, Lin, Wei-Hsun, Lin, Shih-Yen, Reyner, C. J., Liang, Baolai L., and Huffaker, D. L.

Subjects
ddc:530
Abstract

This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Appl. Phys. Lett. 102, 052115 (2013) and may be found at https://doi.org/10.1063/1.4791678.

Published
2013

29. A study of ultrasonic spray pyrolysis deposited rutile-TiO2-based metal-semiconductor-metal ultraviolet photodetector.

Author

Liu, Han-Yin, Lin, Wei-Hsun, Sun, Wen-Ching, Wei, Sung-Yen, and Yu, Sheng-Min

Subjects
*TITANIUM dioxide, *SEMICONDUCTOR analysis, *ULTRAVIOLET sources, *PHOTODETECTORS, *RUTILE
Abstract

This work uses ultrasonic spray pyrolysis deposition to grow the TiO 2 film on a Si substrate. The TiO 2 film was annealed at 800 °C for 2 h to form rutile phase. X-ray diffraction, Raman spectrum, X-ray photoelectron spectroscopy were used to characterized rutile phase TiO 2 . The optical characteristics like refractive index, extinction coefficient and absorption coefficient were measured. The rutile TiO 2 -based metal-semiconductor-metal ultraviolet photodetector was fabricated and investigated, including current-voltage characteristic, photoresponsivity, external quantum efficiency, response time, noise equivalent power, and detectivity. [ABSTRACT FROM AUTHOR]

Published
2017
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