Zobrazeno 1 - 10
of 37
pro vyhledávání: '"Man Geun Kim"'
Publikováno v:
Solar Energy Materials and Solar Cells. 109:209-214
A CdTe/CdS heterostructure was fabricated on Fluorine Tin Oxide glass to produce thin-film photovoltaic devices. A CdCl 2 layer was deposited onto the CdTe absorber layer and the subsequent annealing of the stack was performed in a He atmosphere. The
Publikováno v:
Microsystem Technologies. 17:1439-1445
A torsional micromechanical scanner was fabricated using photosensitive polymer (SU-8). The scanner consists of two parts; top layer (micro mirror) and bottom layer (an anchor and electrodes). The SU-8 scanner is actuated by electrostatic force gener
Publikováno v:
Journal of Microelectromechanical Systems. 18:1365-1370
An on-axis laser Doppler vibrometer (LDV), where the direction of the incident beam is the same as the direction of the movement of the actuator, intrinsically offers an accurate dynamic measurement, although it cannot be currently applied to MEMS ac
Autor:
Jin-Bong Kim, Man Geun Kim
Publikováno v:
International Journal of Modern Physics B. 17:1884-1890
This study has been investigated to predict the deformation and states of stress and strain by axial and lateral acceleration during launch. Because a gun tube is not perfectly straight at its initial state while under gravity loading, the projectile
Publikováno v:
IEEE Photonics Technology Letters. 17:774-776
We developed a micromachined X-type 2/spl times/4 optical add-drop module (OADM) featuring no difference in propagation length. Four pairs of lensed fibers are aligned in "X" position, and four micromirrors are located between the pairs of optical fi
Autor:
Kyung-Ryul Kim, Sung Jong Yoo, Man-Geun Kim, Dong-Yu Kim, Sang-Soo Choi, Kyunghwan Oh, Chaemin Chun
Publikováno v:
Applied Physics Letters. 83:1080-1082
We report the fabrication and characteristics of surface relief grating on the end surface of silica optical fiber with a diameter of 125 μm. One- and two-dimensional gratings were inscribed on the fiber surface covered with azo polymer thin-film la
Autor:
Sang-Mo Shin, Boreum Lee, Sung Yang, Man Geun Kim, Sangjo Shim, Kyoung-Woo Jo, Yong Seok Kang, Jong-Hyun Lee
Publikováno v:
Journal of biomechanical engineering. 132(10)
In this paper, frequency response (dynamic compression and recovery) is suggested as a new physical marker to differentiate between breast cancer cells (MCF7) and normal cells (MCF10A). A single cell is placed on the laminated piezoelectric actuator
Publikováno v:
2009 IEEE Sensors.
We proposed a new method to measure the frequency-dependent attenuation of bio cells using piezoelectric ultrasonic transducer. The polyvinylidene fluoride (PVDF) polymer was employed as piezoelectric material to take an advantage of its low acoustic
Publikováno v:
2009 IEEE Antennas and Propagation Society International Symposium.
A beam reconfigurable antenna based on folded dipole structure has been presented. The antenna can switch beams without the input impedance variation. The front-to-back ratio is measured as approximately 7dB. To implement the antenna, a bi-stable lea
Publikováno v:
2009 IEEE/LEOS International Conference on Optical MEMS and Nanophotonics.
A torsional optical microscanner was demonstrated with four orthogonally arranged rotators, which offer a unique advantage to amplify a scanning angle through torque arms. The four rotators to oscillate the micromirror were operated by an interaction