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http://dx.doi.org/10.3807/COPP.2021.5.4.391

Deformation of the PDMS Membrane for a Liquid Lens Under Hydraulic Pressure  

Gu, Haipeng (College of Intelligence Science and Technology, National University of Defense Technology)
Gan, Zihao (College of Intelligence Science and Technology, National University of Defense Technology)
Hong, Huajie (College of Intelligence Science and Technology, National University of Defense Technology)
He, Keyan (College of Intelligence Science and Technology, National University of Defense Technology)
Publication Information
Current Optics and Photonics / v.5, no.4, 2021 , pp. 391-401 More about this Journal
Abstract
In the present study, a hyperelastic constitutive model is built by complying with a simplified hyperelastic strain energy function, which yields the numerical solution for a deformed polydimethylsiloxane (PDMS) membrane in the case of axisymmetric hydraulic pressure. Moreover, a nonlinear equilibrium model is deduced to accurately express the deformation of the membrane, laying a basis for precise analysis of the optical transfer function. Comparison to experimental and simulated data suggests that the model is capable of accurately characterizing the deformation behavior of the membrane. Furthermore, the stretch ratio derived from the model applies to the geometrical optimization of the deformed membrane.
Keywords
Hyperelastic material; Liquid lens; Polydimethylsiloxane; Thin film;
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