Korea Advanced Institute of Science and Technology · Engineering
성수 김 교수의 연구실은 메조다공성 소재 및 고분자 기반 나노소재의 설계와 응용을 중심으로 연구를 진행하고 있습니다. 특히, 고온·고수열 안정성을 확보한 메조다공성 실리카 소재의 합성과, 전기장에 의해 정렬된 PVDF 나노섬유를 통한 고성능 피에조전기 소재 개발에 주력하고 있습니다. 또한 전기스파inning 기반 나노섬유의 기계적 강도 향상을 위한 고온 처리 기술 대체로 마이크로파를 활용한 새로운 정련 기법을 개발하여 복합재료 응용 가능성을 모색하고 있습니다.
Figures are computed from collected data and may differ slightly.
A family of mesoporous molecular sieves (denoted MSU-G) with vesiclelike hierarchical structures and unprecedented thermal (1000 degreesC) and hydrothermal stabilities (more than 150 hours at 100 degreesC) associated with high SiO4 cross-linking was prepared through a supramolecular assembly pathway that relies on hydrogen bonding between electrically neutral gemini surfactants of the type CnH2n+1NH(CH2)2NH2 and silica precursors derived from tetraethylorthosilicate. The vesicle shells are const
Two-dimensional, hexagonally ordered silicas with large uniform mesopores (7.6−11.9 nm) have been assembled through a nonionic supramolecular assembly pathway using sodium silicate as a silica source and the triblock copolymer Pluronic P123 (EO20PO70EO20) as a structure-directing agent. An increase in the synthesis temperature from 308 to 333 K in a one-step procedure led to a systematic increase in the unit-cell size, pore diameter, specific surface area, and pore volume, and to a decrease in t
ABSTRACT Poly(vinylidene difluoride) (PVDF) has been widely used in piezoelectric applications as films and nanofiber mats, but there are limited publications on piezoelectric wet‐spun fibers. In this work, PVDF fibers were prepared using the wet spinning method, and the processing parameters, including the drawing ratio and heat setting temperature, were controlled in the continuous wet spinning system to increase the β‐phase crystallinity of the fibers. In addition, the wet‐spun PVDF fibers we
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