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〈속보논문〉 나노스케일의 금속 나노빔 시험편 제작 및 이를 이용한 금 박막 나노 구조물의 기계적 물성 평가
白昌煜(Chang-Wook Baek),玄益在(Ik-Jae Hyeon) 대한전기학회 2007 전기학회논문지 Vol.56 No.7
In this paper, fabrication techniques for nanoscale metallic nanobeam specimens have been proposed, and mechanical properties of the fabricated gold nanobeams have been evaluated by nanoindentation techniques and nanobeam bending test. Elastic modulus and hardness of gold nanobeams were measured to be 109.6 ± 10 ㎬ and 1.73 ± 0.3 ㎬, respectively, from the nanoindentation test, while elastic modulus was 241 ± 7 ㎬ from the nanobeam bending test.
백창욱(Chang-Wook Baek),김용권(Yong-Kweon Kim) 한국자기학회 1994 韓國磁氣學會誌 Vol.4 No.4
Fundamental characteristics of giant magnetostrictive alloy Terfenol-D(Tb_(0.3)Dy_(0.7)Fe_(1.9-1.95)) are measured and discussed on the application for actuators. The magnetostriction is measured by laser displacement measuring system and the applied compressive stress is measured by load cell. Magnetostrictions increased as the applied compressive stresses increased. When the stress is 7 MPa, the magnetostriction is 1000 ppm at 1500 Oe. As the stresses increased from 0 to 14 MPa, the magnetic fields for saturating the magnetostriction also increased. The temperature increased during the experiment is 0.3℃, so the thermal expansion is negligible in these experiments. The feedback or temperature control function should be added for the precise position control actuator.