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Microfluidic on-chip fluorescence-activated interface control system

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Microfluidic on-chip fluorescence-activated interface control system
นักวิจัย : Li, Haiwang , Nguyen, Nam-Trung , Wong, Teck Neng , Ng, S. L.
คำค้น : DRNTU::Engineering::Mechanical engineering.
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2553
อ้างอิง : Li, H. W., Nguyen, N. T., Wong, T. N., & Ng, S. L.(2010). Microfluidic on-chip fluorescence-activated interface control system. Biomicrofluidics, 4(4). , http://hdl.handle.net/10220/7749 , http://link.aip.org.ezlibproxy1.ntu.edu.sg/link/doi/10.1063/1.3516036 , 159371
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Biomicrofluidics
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

A microfluidic dynamic fluorescence-activated interface control system was developed for lab-on-a-chip applications. The system consists of a straight rectangular microchannel, a fluorescence excitation source, a detection sensor, a signal conversion circuit, and a high-voltage feedback system. Aqueous NaCl as conducting fluid and aqueous glycerol as nonconducting fluid were introduced to flow side by side into the straight rectangular microchannel. Fluorescent dye was added to the aqueous NaCl to work as a signal representing the interface position. Automatic control of the liquid interface was achieved by controlling the electroosmotic effect that exists only in the conducting fluid using a high-voltage feedback system. A LABVIEW program was developed to control the output of high-voltage power supply according the actual interface position, and then the interface position is modified as the output of high-voltage power supply. At last, the interface can be moved to the desired position automatically using this feedback system. The results show that the system presented in this paper can control an arbitrary interface location in real time. The effects of viscosity ratio, flow rates, and polarity of electric field were discussed. This technique can be extended to switch the sample flow and droplets automatically.

บรรณานุกรม :
Li, Haiwang , Nguyen, Nam-Trung , Wong, Teck Neng , Ng, S. L. . (2553). Microfluidic on-chip fluorescence-activated interface control system.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Li, Haiwang , Nguyen, Nam-Trung , Wong, Teck Neng , Ng, S. L. . 2553. "Microfluidic on-chip fluorescence-activated interface control system".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Li, Haiwang , Nguyen, Nam-Trung , Wong, Teck Neng , Ng, S. L. . "Microfluidic on-chip fluorescence-activated interface control system."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2553. Print.
Li, Haiwang , Nguyen, Nam-Trung , Wong, Teck Neng , Ng, S. L. . Microfluidic on-chip fluorescence-activated interface control system. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2553.