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This paper reports the first demonstration of a light-regulated bio-micro-actuator powered by a transgenic Drosophila melanogaster DV tissue (insect heart muscle). We expressed a mutant form of blue light-sensitive cation channel, channelrhodopsin-2, into the cell membrane of the DV tissue. The DV tissue was assembled into a micro-structure made of poly-dimethylsiloxane (PDMS). The light-sensitive...
It is necessary to remove the metallic wear debris originating from pipe of manufacturing line in industrial plant processing highly viscous fluid such as foods or industrial products. In this study, we developed a high gradient magnetic separation (HGMS) system which consists of superconducting magnet and magnetic filters to remove the metallic wear debris. The particle trajectory simulation and...
Ultra thin temperature responsive polymer, poly(N-isopropylacrylamide) (PIPAAm) grafted layer exhibits cell attachment and detachment properties in response to temperature change. Such properties are dependent on thickness and amount of the grafted PIPAAm, and are observed for extremely ultra thin thickness (for example, 20 nm thickness for tissue culture poly styrene and 5 nm for glass cover slips)...
Electrical stimulation was applied to drive rat skeletal muscle cells. Then this driving force was utilized to fabricate a diaphragm type micropump. First, a skeletal muscle cell sheet, which consisted of skeletal muscle cells on a PDMS sheet, was fabricated to extract the drive force from the cells. These cells are known to align along a micro pattern. We took advantage of this principle and patterned...
Poly(N-isopropylacrylamide) (PIPAAm) was covalently grafted on glass coverslips (PIPAAm-CSs) by electron beam irradiation. Thickness and amount of the grafted polymer amount were increased with the initial monomer concentration. PIPAAm-CSs with thicker and larger amount of the grafted polymer exhibited more hydrophilic surfaces. When the monomer concentration was 5 wt%, the grafted polymer density...
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