Microfluidic sensing devices employing in situ-formed liquid crystal thin film for detection of biochemical interactions.
Microfluidic sensing devices employing in situ-formed liquid crystal thin film for detection of biochemical interactions.
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DOI:
10.1039/c2lc40462a
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发表时间:
2012-10-07
期刊:
影响因子:
6.1
通讯作者:
Jiang H
中科院分区:
文献类型:
--
作者:
Liu Y;Cheng D;Lin IH;Abbott NL;Jiang H
Although biochemical sensing using liquid crystals (LC) has been demonstrated, relatively little attention has been paid towards the fabrication of in situ-formed LC sensing devices. Herein, we demonstrate a highly reproducible method to create uniform LC thin film on treated substrates, as needed, for LC sensing. We use shear forces generated by the laminar flow of aqueous liquid within a microfluidic channel to create LC thin films stabilized within microfabricated structures. The orientational response of the LC thin films to targeted analytes in aqueous phases was transduced and amplified by the optical birefringence of the LC thin films. The biochemical sensing capability of our sensing devices was demonstrated through experiments employing two chemical systems: dodecyl trimethylammonium bromide (DTAB) dissolved in an aqueous solution, and the hydrolysis of phospholipids by the enzyme phospholipase A2 (PLA2).
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影响因子:
8.4
作者:
Bi, Xinyan;Huang, Shisheng;Yang, Kun-Lin
通讯作者:
Yang, Kun-Lin
影响因子:
2.3
作者:
CHMIELEWSKI, AG;LEPAKIEWICZ, E
通讯作者:
LEPAKIEWICZ, E
影响因子:
4
作者:
KAHN, FJ
通讯作者:
KAHN, FJ
影响因子:
9.5
作者:
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通讯作者:
Schwartz, Daniel K.
影响因子:
3.3
作者:
Yang, KL;Cadwell, K;Abbott, NL
通讯作者:
Abbott, NL