9 March 2016 Optical coherence elastography for human finger-pad skin deformation studies
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Abstract
An optical coherence tomography (OCT) system with an A-scan rate of 20 kHz was developed for measuring the biomechanical properties of human finger-pad skin. Such an OCT system operates at a center wavelength of 890 nm with a spectral bandwidth of 150 nm resulting in a very good axial resolution of 2.6 μm. The measured sensitivity and sensitivity roll-off of the system were ~93 dB and ~6 dB mm-1, respectively. Elastographic B-scan images of the human finger-pad skin were constructed by using 1000 A-scans. Deformations of the human finger-pad before and after sliding, while pressed against a transparent optical glass plate under the action of 0.5-2 N force, were examined both at the surface and sub-surface. Biomechanical properties, i.e., deformation of the skin, finger-pad/glass interface contact area were studied.
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Xuesong Hu, Raman Maiti, Joseph Boadi, Wei Li, Matt J. Carré, Roger Lewis, Steven E. Franklin, Stephen J. Matcher, "Optical coherence elastography for human finger-pad skin deformation studies", Proc. SPIE 9710, Optical Elastography and Tissue Biomechanics III, 97100C (9 March 2016); doi: 10.1117/12.2212308; https://doi.org/10.1117/12.2212308
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