Measuring the pressures across microfluidic droplets with an optical tweezer

被引：7
|
作者：
Jin, Yuhang [1 ]
Orth, Antony [1 ]
Schonbrun, Ethan [1 ,2 ]
Crozier, Kenneth B. [1 ]
机构：
[1] Harvard Univ, Sch Engn & Appl Sci, Cambridge, MA 02138 USA
[2] Harvard, Rowland Inst, Cambridge, MA 02142 USA
来源：
OPTICS EXPRESS | 2012年 / 20卷 / 22期
关键词：
PLASMA TREATMENT; FLOW; MICRODROPLETS; NANOPARTICLES; PLATFORM; BUBBLES;
D O I：
10.1364/OE.20.024450
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We introduce a novel technique that enables pressure measurements to be made in microfluidic chips using optical trapping. Pressure differentials across droplets in a microfluidic channel are determined by monitoring the displacements of a bead in an optical trap. We provide physical interpretation of the results. Our experiments reveal that our device has high sensitivity and can be operated over a wide range of pressures from several Pascals to several thousand Pascals. (C) 2012 Optical Society of America
引用
收藏
页码：24450 / 24464
页数：15
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