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| Content Provider | The American Society of Mechanical Engineers (ASME) Digital Collection |
|---|---|
| Author | Baker, Evan Reissman, Timothy Zhou, Fan Sun, Cheng |
| Copyright Year | 2012 |
| Abstract | The inefficiency in converting naturally occurring vibration frequencies (sub-100 Hz) to electrical energy continues to be a major obstacle for miniaturized vibration energy harvesters. In a recent work, we addressed this issue by introducing photopolymer-based designs, using projection microstereolithography which exhibited 61 Hz resonant frequencies due to low elastic moduli and low flexural rigidity using a three-dimensional, helical coil design. In this paper, we extend upon those findings to report on a post-process technique which uses ultraviolet exposure time to manipulate the material properties of photopolymer-based vibration energy harvesters. The results show with 1–3 minutes of post-exposure, an effective elastic modulus variation from 399–904 MPa and a parasitic damping change from 0.0595–0.0986 kgs−1. Likewise, resonant frequency shifts of 53.5–805 Hz and power output increase from 56.5 to 120.4 μW (when excited at a constant acceleration of 6.06±0.06 ms−2) are achieved, without geometry changes and using the same photopolymer material. |
| Sponsorship | Design Engineering Division Computers and Information in Engineering Division |
| Starting Page | 263 |
| Ending Page | 272 |
| Page Count | 10 |
| File Format | |
| ISBN | 9780791845042 |
| DOI | 10.1115/DETC2012-71439 |
| Volume Number | Volume 5: 6th International Conference on Micro- and Nanosystems; 17th Design for Manufacturing and the Life Cycle Conference |
| Conference Proceedings | ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference |
| Language | English |
| Publisher Date | 2012-08-12 |
| Publisher Place | Chicago, Illinois, USA |
| Access Restriction | Subscribed |
| Subject Keyword | Damping Design Geometry Elastic moduli Vibration Oscillating frequencies Materials properties Resonance Stiffness Energy harvesting Photopolymers |
| Content Type | Text |
| Resource Type | Article |
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