Young Seok Song
서울대학교 공과대학 기계공학부 · 공학
송영석 교수의 연구실은 나노복합재료 및 생체재료 분야에서 핵심적인 연구를 수행하고 있습니다. 특히, 생분해성 원료를 활용한 나노복합재료 개발(예: 사용된 커피 grounds를 나노필러로 활용)과 함께, 세포의 열역학적 손상을 최소화하는 미세유체 기반 동결보존 기술에 초점을 맞추고 있습니다. 또한, 탄소나노튜브의 표면처리가 나노복합체의 거동에 미치는 영향과 고분자 기반 복합체의 거동 메커니즘에 대한 물리적 특성 분석도 진행 중입니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
The vitrification of a liquid occurs when ice crystal formation is prevented in the cryogenic environment through ultrarapid cooling. In general, vitrification entails a large temperature difference between the liquid and its surrounding medium. In our droplet vitrification experiments, we observed that such vitrification events are accompanied by a Leidenfrost phenomenon, which impedes the heat transfer to cool the liquid, when the liquid droplet comes into direct contact with liquid nitrogen.
Minimizing cell damage throughout the cryopreservation process is critical to enhance the overall outcome. Osmotic shock sustained during the loading and unloading of cryoprotectants (CPAs) is a major source of cell damage during the cryopreservation process. We introduce a microfluidic approach to minimize osmotic shock to cells during cryopreservation. This approach allows us to control the loading and unloading of CPAs in microfluidic channels using diffusion and laminar flow. We provide a th
Abstract Poly(ethylene oxide) nanocomposites filled with functionalized multi‐walled carbon nanotubes are prepared and characterized using rheological and morphological measurements. This study investigates how the surface treatment of carbon nanotubes (CNTs) affects the CNT dispersion state. It is found that the nanocomposites have a higher effective volume fraction than the real volume fraction of the CNTs. The dispersion state of the CNTs is identified by using field emission scanning electro
ABSTRACT This study evaluated physical properties of the nanocomposites reinforced by used coffee grounds. Coffee grounds were ball‐milled and filtered in an effort to secure nanoparticles for the fabrication of polyvinyl alcohol (PVA)/coffee nanocomposites. We analyzed the particle size distribution of coffee particles and investigated mechanical and optical properties of the prepared nanocomposites. Carbon black (CB)‐filled nanocomposites were also prepared to understand the physical behavior
Abstract The Baylis‐Hillman reaction of 2‐cyanobenzaldehyde with some activated alkenes leading to the formation of 3‐oxo‐2,3‐dihydro‐1 H ‐isoindoles has been described.
