Viscoelastic shear wave at thermal steady state in gelatin

Sheng-Yi Chang; Chien-Wa Ho; Tong-Sheng Hsieh; Li-Ping Yu; Chien Chou

doi:10.1117/12.2001356

21 February 2013 Viscoelastic shear wave at thermal steady state in gelatin

Sheng-Yi Chang, Chien-Wa Ho, Tong-Sheng Hsieh, Li-Ping Yu, Chien Chou

Proceedings Volume 8597, Plasmonics in Biology and Medicine X; 85970Z (2013) https://doi.org/10.1117/12.2001356
Event: SPIE BiOS, 2013, San Francisco, California, United States

Abstract

Viscoelastic shear waves (VESW) propagation in soft matters such as gelatin under thermal steady state was studied. VESW in a slab of gelatin causes the transverse displacement of the surface in a harmonic wave. The harmonic oscillation frequency of the transverse displacement of gelatin surface was then measured in real time in order to measure the modulus of rigidity of gelatin in terms of the measured oscillation frequency. A polarized heterodyne interferometer (PHI) was setup in this experiment which enables to precisely measure the transverse displacement of surface in real time at 0.3 nm resolution. This results in the proposed VESW method able to characterize gelatin soft material in real time. From the experimental demonstration, the properties of VESW propagation in soft material at thermal steady state potentially can become a novel nano-scale non-intrusion strain-stress sensor able to characterize the modulus rigidity of soft material.

Citation Download Citation

Sheng-Yi Chang, Chien-Wa Ho, Tong-Sheng Hsieh, Li-Ping Yu, and Chien Chou "Viscoelastic shear wave at thermal steady state in gelatin", Proc. SPIE 8597, Plasmonics in Biology and Medicine X, 85970Z (21 February 2013); https://doi.org/10.1117/12.2001356

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