Seina Kawasaki

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Rewritable compact discs (CDs) using magnetooptical (MO) materials have been developed. The disks were prepared by depositing Si<inf>3</inf>N<inf>4</inf>, TbFeCo alloy, Si<inf>3</inf>N<inf>4</inf> and Al films on polycarbonate substrates using a magnetron sputtering system. Sputter etching was carried out for the Si<inf>3</inf>N<inf>4</inf> layer proir to(More)
An experimental setup is proposed for the precise measurement of the quantum states of ultracold neutrons bound in the earth’s gravitational field. The experiment utilizes a CCD-based pixel sensor and magnification system to observe the fine structure of the neutron distribution. In this work, we analyzed the sensor’s deposited energy measurement capability(More)
The reactions of enantiomeric glycerol-based 3-armed lactide oligomers (H3DLAO and H3LLAO) and a diethylene glycol-based 2-armed ɛ-caprolactone oligomer (H2CLO) with hexamethylene diisocyanate (HDI) produced polyesterurethane copolymer networks (PEU-3scLAO/2CLOs 100/0, 75/25, 50/50, 25/75 and 0/100) with different feed ratios of stereocomplex (sc) lactide(More)
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