A novel means of transducing mechanical force by using a polymeric-based diffractive grating sensor is presented. The diffraction gratings are successfully fabricated upon poly(dimethyl siloxane) polymer substrates by holographic interference and micromolding. A micromaterial tensile test incorporated into the surface diffraction grating experiment showed that a relationship between the load and the observed diffraction-pattern shift could be obtained. The results show an excellent correlation between the optical measurement and load, with a sensitivity of 0.05 N.
© 2006 Optical Society of America
Diffraction and Gratings
Original Manuscript: May 9, 2005
Revised Manuscript: August 14, 2005
Manuscript Accepted: August 15, 2005
Wei-Chih Wang, Chi-Ting Ho, Yi-Ru Lian, and Wei-Ching Chuang, "Transducing mechanical force by use of a diffraction grating sensor," Appl. Opt. 45, 1893-1897 (2006)