| 학회 |
한국화학공학회 |
| 학술대회 |
2008년 가을 (10/23 ~ 10/24, 부산 BEXCO) |
| 권호 |
14권 2호, p.3240 |
| 발표분야 |
이동현상 |
| 제목 |
Pumpless dispensing drop-on-demand using electric induction and liquid bridge break-up |
| 초록 |
Dispensing pico-to-nanoliter droplets on a solid substrate has various applications from printing to biotechnology. Microarrays, including their fabrication, is one of the largest fields where small and uniform droplets are needed to analyze accurately a large amount of data at the same time. DNA microarrays and all the chips with cells, bio-molecules, or particles, can be fabricated using this drop-on-solid printing. In this work, a novel method for dispensing droplet on a substrate using an electric field with an inverse geometry is suggested and successfully demonstrated. The process of dispensing droplets consists of two stages: liquid bridge formation by electric induction and its break-up by the motion of a top plate relative to a bottom nozzle. We characterized the droplet diameter as a function of nozzle-to-plate distance and the plate velocity. For over a thousand droplets, the size varied only about 2 %, which clearly confirms the high uniformity of this method. |
| 저자 |
홍진석1, 이범석2, 문재석1, 이정건2, 강인석1
|
| 소속 |
1포항공과대, 2삼성종합기술원 |
| 키워드 |
capillary; liquid-bridge; electric induction
|
| E-Mail |
|
| 원문파일 |
초록 보기 |
