Chiral smectic C (SmC*) elastomers have attracted both industrial and scientific interests, because of rubber elasticity
with anisotropic physical properties such as pyroelectricity, ferroelectricity, SHG and piezoelectricity owing to the point
group C<sub>2</sub>. In this paper, we discuss their physical properties focused on the stimuli-responsive behavior, such as the
biaxial shape memory effect in thermo-mechanical responses, the electric response to mechanical excitation due to the
piezoelectric effect, and the electroclinic effect that brings about macroscopic deformation. Additionally, we consider
chiral mechanical coupling between tilt and twist in SmC* elastomers.
We have developed a new four-wavelength optical imager to evaluate the oxygen supply in human skin for peripheral circulation. It measures the reflected light from human skin by a CCD and presents the maps of hemoglobin distribution. This paper describes the principle, system configuration and performance test for human foot during and after venous and arterial occlusion. The obtained images showed distinct local difference in skin oxygenation due to blood flow.