Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Jong-Hyeong Song"'
Autor:
Jong-Hyeong Song, Anatoliy Lapchuk, Seungdo An, Sang Kyeong Yun, Heung Woo Park, Victor Yurlov, El Mostafa Bourim, Haeng-Seok Yang
Publikováno v:
Sensors and Actuators A: Physical. 167:406-415
The dependence of ribbons time drift of a spatial optical modulator on the driving voltage is analyzed. It was assumed that mechanical stress, which follows from non 180° domain wall movement, results in asymmetrical positioning of coercive and rela
Autor:
Victor Yurlov, Sang Kyeong Yun, A. Lapchuk, KiUn Lee, In-Jae Yeo, Jong-Hyeong Song, Seungdo An
Publikováno v:
Displays. 31:15-24
The peculiarities of 1D projection displays using spatial light modulators (SLM1) are considered. The conditions for high contrast images in SLM are investigated. It is shown that an amplitude imbalance between the light reflected from the passive an
Autor:
Sang-Kyeong Yun, Hee Yeoun Kim, Jong-Hyeong Song, Jeong-Suong Yang, Ki-Suk Woo, El Mostafa Bourim, Juh-Wan Yang
Publikováno v:
Sensors and Actuators A: Physical. 155:290-298
Time-dependent deformation (creep) behaviors of piezoelectric microactuators have been investigated. Position (or gap height) drift of microbridged actuator beam and its displacement amplitude change with time could be attributed to the anelastic beh
Publikováno v:
Japanese Journal of Applied Physics. 42:4063-4066
We propose and demonstrate a Si-wafer bending technique for preparing a three-dimensional microoptical bench (MOB). The process for preparing the three-dimensional MOB is based on the usual planar photolithography, anisotropic wet etching and prepara
Publikováno v:
Japanese Journal of Applied Physics. 42:4027-4030
Spray coating of the photoresist is a promising technique for realizing photolithography on three-dimensional structures, which is frequently desired in the field of microelectromechanical systems. Revealing the technical performance and determining
Publikováno v:
Japanese Journal of Applied Physics. 42:2335-2338
Application of micro-electro-mechanical system (MEMS) technology for controlling the evanescent field is attractive because the dimension of the evanescent field is of the same order as that of the movement distance of the MEMS device. Two different
Publikováno v:
Journal of Crystal Growth. 236:119-124
Reducing hillock surface defects, which are often present with a density larger than 10 3 cm –3 on HgCdTe grown on (1 0 0) GaAs by metal organic vapor phase epitaxy, is the most difficult task for many researchers. In order to improve the surface m
Publikováno v:
Journal of Crystal Growth. 192:109-116
An electron microscopy study has been performed on the microstructure of (1 0 0)CdTe epitaxial layers, which were grown upon a 4°-off (1 0 0)GaAs substrate by metalorganic chemical vapor deposition. The surface of the epitaxial layer is covered with
Publikováno v:
Journal of Crystal Growth. :1232-1236
We report in situ n- and p-type doping of HgCdTe/CdTe/(1 0 0)GaAs grown by metalorganic vapor phase epitaxy (MOVPE), using the interdiffused multilayer process (IMP). HgCdTe was doped either with iodine from isopropyliodide (IPI) for n-type doping or
Publikováno v:
Journal of Crystal Growth. 159:1132-1135
The hillock density on metalorganic vapor phase epitaxially grown (100) HgCdTe/GaAs could be reduced to less than 10 cm -2 by rinsing the substrate with KOH in a water solution before growth. The HgCdTe layers which were annealed in Hg at 250°C were