| 학회 | 한국화학공학회 |
| 학술대회 | 2010년 가을 (10/21 ~ 10/22, 대전컨벤션센터) |
| 권호 | 16권 2호, p.1956 |
| 발표분야 | 이동현상 |
| 제목 | System for droplet trapping using pneumatic valvesin microfludic device |
| 초록 | Droplets in microfluidic devices have many interest due to high monodispersity, precise control of droplet size, and transportation of cemical or biological materials. Among many applications using droplets such as synthesis of functional materials or protein crystallization, assay of bio-substance in microfluidic system is widely used. However, it is difficult to detect or observe dynamic process within moving droplets. Therefore, technique for trapping droplets at fixed position in microchannel is important. In this study, we developed a novel system about droplet trapping using pneumatic valves. The thin pneumatic valves were made of PDMS elastomer. Therefore, modification of their shape happened easily by flow pressure. In other words, by flow pressure, the pneumatic valves were lifted to the inside of control channel. So, the height of the valve region was higher relatively. At the valve region, moving droplets generated at the flow focusing region could be trapped for more stable state. Furthermore, trapped droplets could be released by applying the pressure at the valves. |
| 저자 | 최재훈1, 이기라2, 양승만3 |
| 소속 | 1한국과학기술원 생명화학공학과 / 광자유체집적소자연구단, 2충북대, 3한국과학기술원 생명화학공학과 / 광자유체집적소자연구단 |
| 키워드 | Droplet; Trapping; MIcrofluidics; Pneumatic valves |
| 원문파일 | 초록 보기 |
