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This paper reports the results of our AC and DC breakdown and dielectric permittivity tests on cellulose samples carried out according to ASTM standards. A physical model of breakdown has been proposed to explain the observed results. Also, permittivity variations with humidity and frequency change were investigated. The variation of breakdown strengths and dielectric permittivity with relative humidity...
Measurements of bias-dependent deflections and strain in EAPap, as well as water absorption were carried out. Model simulations have also been performed to probe the role of the various internal mechanisms. Our simulation predictions yield good agreement with the measured data on EAPap deflections. The modeling suggests that internal ion content and its migration, water absorption leading to a non-uniform...
The concept of using cellulose as a smart material for preparing electro-active paper (EAPap) has been a land mark discovery, since it exhibits an impressive magnitude of actuation at relatively modest voltages. Considering the small thickness of cellulose samples (35 mum) and smaller depth of electrodes (100 nm), even at relatively low operating voltages (7 V), high electrical stresses can exist...
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