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| Autor: | Wen-Ting Chu, 朱雯婷 |
|---|---|
| Rok vydání: | 2017 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 105 In this research, we proposed a rapid fabrication process for miniaturizing the electro-thermal grippers by using silver ink. With this process, we fabricated the one degree-of-freedom micro-grippers which can be controlled by external magnetic field. Due to cross-sectional area difference of the cold and hot arms, the micro-gripper can be driven by applying dc voltages. Electrical, thermal and mechanical behaviors of the micro-grippers were simulated and tested, and the simulation results were in accordance with the experiment results. The simulated maximum temperature was 390 K, meanwhile in-plane tip displacement was 445 -μm, and occurred at the hot arms with an input voltage of 1 V. The measured displacement of the micro-gripper was observed to be 441 μm. The fabricated micro-gripper can grip a small glass ball with a diameter of 1 mm between both tips. In the end, we applied magnetic field to the structure in order to rotate the micro-gripper. An electromagnet generated magnetic field when the electrical current passed through the coils. The result showed that when the distance between the micro-grippers and electromagnet is about 1.57 mm, the micro-grippers rotated with an input current of 6.3 A. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
| Externí odkaz: |
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