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A room temperature hydrophilic method of the polyurea film surface was developed using vacuum ultraviolet (VUV) light at 172nm in wavelength. The treated film has highly hydrophilic surface for long time (∼2 months). The stable hydrophilic surface, water contact angle of smaller than 20°, was realized. It is kept even after very hard condition of ultrasonic cleaning in de-ionized water. The polyurea...
A novel low temperature bonding method was developed by using polyurea film as intermediate layers. A microchip having microchannel which has highly hydrophilic surface was realized by the pretreatment of VUV (vacuum ultraviolet) light irradiation. The bonding temperature was low enough to use thermo plastic channel plates such as PMMA (poly-methyl methacrylate) with negligible deformation of the...
A novel hydrophilic method of the polyurea film surface at room temperature was developed using vacuum ultraviolet (VUV) light 172 nm in wavelength. The treated film has highly hydrophilic surface for long time (~ 2 months). Hydrophilic surface is stable and is kept even after very hard condition of ultrasonic cleaning in de-ionized water. The polyurea film was applied for PMMA (polymethylmethacrylate)...
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