Journal
JOURNAL OF MICROMECHANICS AND MICROENGINEERING
Volume 19, Issue 11, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0960-1317/19/11/115001
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Funding
- National Science Council, Taiwan, R. O. C. [NSC 97-2628-E-002049-MY3]
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In this work, we present the development of a capacitive tactile sensing array realized by using MEMS fabrication techniques and flexible printed circuit board (FPCB) technologies. The sensing array, which consists of two micromachined polydimethlysiloxane (PDMS) structures and a FPCB, will be used as the artificial skin for robot applications. Each capacitive sensing element comprises two sensing electrodes and a common floating electrode. The sensing electrodes and the metal interconnect for signal scanning are implemented on the FPCB, while the floating electrode is patterned on one of the PDMS structures. This special design can effectively reduce the complexity of the device structure and thus makes the device highly manufacturable. The characteristics of the devices with different dimensions are measured and discussed. The corresponding scanning circuits are also designed and implemented. The tactile images induced by the PMMA stamps of different shapes are also successfully captured by a fabricated 8 x 8 array.
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