Abstract
We have developed a hydraulic displacement amplification mechanism (HDAM) and studied its dynamic response when combined with a piezoelectric actuator. The HDAM consists of an incompressible fluid sealed in a microcavity by two largely deformable polydimethylsiloxane (PDMS) membranes. The geometry with input and output surfaces having different cross-sectional areas creates amplification. By combining the HDAM with micro-actuators, we can amplify the input displacement generated by the actuators, which is useful for applications requiring large deformation, such as tactile displays. We achieved a mechanism offering up to 18-fold displacement amplification for static actuation and 12-fold for 55 Hz dynamic actuation.
Original language | English |
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Pages (from-to) | 2946-2956 |
Number of pages | 11 |
Journal | Sensors |
Volume | 10 |
Issue number | 4 |
DOIs | |
Publication status | Published - 2010 Apr |
Keywords
- Dynamic actuation
- Hydraulic amplification
- Liquid encapsulation
- MEMS
- Tactile display
ASJC Scopus subject areas
- Analytical Chemistry
- Biochemistry
- Atomic and Molecular Physics, and Optics
- Instrumentation
- Electrical and Electronic Engineering