A low-cost, low-power consumption, miniature laser-induced fluorescence system for DNA detection on a microfluidic device.

Abstract:

:With a focus on low-cost and low-power consumption, a miniature laser-induced fluorescence (LIF) detection system was assembled using a 635 nm red diode laser as the excitation source and a photodiode element coupled with an operational amplifier for signal collection. The primary elements of the miniature system, namely the laser and the detection system, cost a combined $70 and required only 270 mW of power for operation. When compared to conventional systems assembled using an argon-ion laser source and a photomultiplier tube, this represents a 98% decrease in the cost, and greater than 5000-fold decrease in power consumption. Quantitation of DNA on microdevices using the miniature LIF detection system was also performed with an error of less than 15%. This detection system is a step in the direction of commercializing microfluidic instrumentation by reducing the cost and power required for operation.

journal_name

Clin Lab Med

authors

Shrinivasan S,Norris PM,Landers JP,Ferrance JP

doi

10.1016/j.cll.2006.12.010

subject

Has Abstract

pub_date

2007-03-01 00:00:00

pages

173-81

issue

1

eissn

0272-2712

issn

1557-9832

pii

S0272-2712(06)00114-4

journal_volume

27

pub_type

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