Tohoku University · 공학
김요시 교수의 연구실은 고성능 섬유 및 나노소재의 기계적 거동과 미세구조-물성 상관관계를 중심으로 연구를 진행하고 있습니다. 특히 탄소섬유, CNT 코ating, 고분자 복합재의 인장 및 굽힘 거동, Weibull 통계 분석을 통해 재료의 신뢰성과 파손 거동을 체계적으로 분석하고 있습니다. 또한 자기기록소재의 나노패터닝 및 고분자 혼합체의 상호작용 메커니즘에 대해서도 연구를 확장하고 있습니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
Circumferential magnetic patterned media were prepared on a 2.5-inch-diameter glass plate and on a 3-in-diameter silicon plate. A Ni master disk possessing spiral patterns with 60-250-nm-width lands and a 400-nm-width groove was pressed into a resist film on a CoPt or CoCrPt film to transfer the spiral patterns. A diblock copolymer solution was cast into the obtained grooves and then annealed to prepare self-assembling dot structures aligned along the grooves. According to the dot patterns, the
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCompatibility in Blends of Poly(methyl methacrylate) and Poly(styrene-co-acrylonitrile). 1. Physical PropertiesK. Naito, G. E. Johnson, D. L. Allara, and T. K. KweiCite this: Macromolecules 1978, 11, 6, 1260–1265Publication Date (Print):November 1, 1978Publication History Published online1 May 2002Published inissue 1 November 1978https://pubs.acs.org/doi/10.1021/ma60066a037https://doi.org/10.1021/ma60066a037research-articleACS PublicationsRequest reuse
The flexural properties of ultrahigh tensile strength polyacrylonitrile‐based (T1000GB), ultrahigh modulus pitch‐based (K13D), and high ductility pitch‐based (XN‐05) carbon fibers have been investigated using a three‐point bending test at various span lengths ranging from 200 to 1500 μm. The flexural modulus and flexural strength of these carbon fibers were measured at room temperature. The fracture surfaces under bending were examined using a high‐resolution scanning electron microscope to iden
The tensile properties and fracture behavior of carbon nanotubes (CNTs) grown on ultrahigh tensile strength polyacrylonitrile (PAN)-based (T1000GB) and ultrahigh modulus pitch-based (K13D) carbon fibers have been investigated. The CNTs were grown on the carbon fiber surface using chemical vapor deposition. The statistical scattering of the tensile strength was also evaluated. The results clearly show that grafting of CNTs improves the mechanical properties and the Weibull modulus of ultrahigh te
Abstract The tensile properties and fracture behavior of poly‐( para ‐phenylene‐2,6‐benzobisoxazole), poly‐( para ‐phenylene terephthalamide), co ‐poly‐( para ‐phenylene‐3,4′‐oxydiphenylene terephthalamide), polyarylate, polyethylene, and poly(lactic acid) high‐performance polymeric fibers have been investigated. The Weibull statistical distributions of the tensile strength were also characterized. The results clearly show that for various types of high‐performance polymer fibers, the Weibull mo
