In this study, micro optical diffusion sensor (MODS) is developed to measure the diffusion coefficient of biological sample such as protein with small sample volume in a short time. By utilizing the laser-induced dielectrophoresis (LIDEP), an additives-free and a high-speed sensing can be realized in the proposed method. The photoconductive layer is essential material for LIDEP, and the high-contrast photoconductivity change is required to form the concentration distribution of the biological sample using LIDEP. In this paper, a hydrogenated amorphous silicon (a-Si:H) is deposited as the photoconductive layer by a reactive RF magnetron sputtering method, which is a simple method compared with other technique such as a plasma-enhanced chemical vapor deposition. a-Si:H was deposited in several sputtering conditions and evaluated the applicability to the sensing device. A measurement device was fabricated, and the diffusion phenomenon of the lattice-shaped concentration distribution was detected by the device.

The final purpose of this research is development of the boiler fuel for reuse of the abandoned cooking oil. This paper indicates the result that estimated the thermophysical property of W/O emulsion type fuel. The continuum phase of test fuel is mixture of heavy oil or kerosene and cooking oil. It is known that micro-burning of dispersed fine liquid brings a secondary atomization action and burning promotion. This paper deals with the measured result of the calorific value and the viscous characteristic that are needed when changing from conventional kerosene or heavy oil to using waste cooking oil mixture W/O emulsion fuel. Measured calorific value is estimated by the addictive property law. Test fuel is indicated the non-Newtonian characteristic by measured results of viscosity. Therefore, the exponentiation law is used for correlation of the viscosity.

Aerogel composite insulation sheets which are complexed with fibers such as nonwoven and aerogel have been launched. For these materials, method of measuring the thermal conductivity has not been established because of their thin and high heat insulating property. In the present study, a method for measuring the thermal conductivity of above materials was proposed by combining a standard measurement method of heat-insulating material ‘Heat flow meter method’ and a mathematical formula for calculating the properties of composite materials ‘Rule of mixture’. By this approach, it was confirmed that it is possible to measure the thermal conductivity of ±2.1% precision fit the specifications of the measuring instrument.

The area of application for Vacuumed insulated panels (VIP), including household electric appliances like refrigerator, boxes for heat and cold insulators and window glasses, is expanding rapidly by its advances of practical applications. Furthermore, VIP has been possibly used in building industries recently. However, the measurement method of its thermal conductivity has been not fully established. Especially, it is difficult to know the thermal conductivity of the core material in VIP. It must be the reason that laminated films lapping the core material in VIP facilitate the growth of the heat loss. In this study, it was proposed a way which could estimate the thermal conductivity of the core material using thermal conductivities measured by Guarded Hot Plate method. We have confirmed the accuracy of the proposed estimation by numerical simulations and experiments. Then we have just a simple assumption that the heat flow conducting through the VIP is separated to two heat flows in the directions of thickness and plane of VIP respectively. Furthermore it was shown that the thermal conductivity of the laminated film could be estimated.