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Fabrication and characterization of a diffraction-grating transducer in thin polybutadiene rubber film for sensing
J M Taguenang1, A Kassu, G Govindarajalu
1Department of Physics, Alabama A&M University, Normal 35762, USA.
Abstract:
Surface relief gratings are holographically fabricated in thin polybutadiene rubber films produced by both spin coating and dip coating on glass and metal substrates. These thin-film gratings are characterized for their application as efficient transducers for detecting dynamic strain in solids. The performance of these rubber-grating transducers is compared to surface-mounted fiber Bragg gratings for a range of frequencies between 50 Hz and 30 kHz. Dynamic-strain sensitivity around 1 nepsilon/radicalHz is recorded for thin rubber-film grating transducers.
