Dynamic displacement measurement of thermal induced shear wave propagation on soft material

• Main Authors: Yu Ting Lin, 林祐霆
• Other Authors: C. Chou
• Format: Others
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/ppfstz

碩士 === 長庚大學 === 光電工程研究所 === 102 === In this thesis, we established a real time interferometric differential-phase measurement platform, in order to analyze thermal induced shear wave on the interface of air and soft material. From theory of harmonic shear wave equation deduced by Stress and strain in soft material, the relation between rate of phase change or oscillation frequency regarding of harmonic shear wave and its elasticity coefficient in shear is developed. Hence, this set up is able to measure the oscillation frequency of harmonic shear wave of soft material in real time. This results in a time dependent elasticity of tested soft material which can be measured precisely and non-invasively. In the future, this proposed method can be applied in biomedical applications such as non-invasive cancer cell diagnosis in terms of variation of cell membrane elasticity in hospital.