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Electrophoretic injection within microdevices

delete2002-04-04
delete56
PRE
AI
M
Maribel Vázquez *
G
Gareth H. McKinley
L
Luba Mitnik
S
Samantha M. Desmarais
P
Paul Matsudaira
D
Daniel J. Ehrlich
DOI:10.1021/ac0110045delete
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摘要

摘要

En 中文
The flexibility of the microfabricated format creates unique opportunities for study of the electrophoretic process. The present work utilizes digital images to capture the motion of DNA samples during pre-electrophoretic processes. A systematic study of DNA loading and strong sample stacking (sample concentration effects) was performed in order to analyze realistic DNA analysis conditions within microdevices. Using digital imaging and microscopy, DNA sample profiles within the injector were analyzed by deconvolving the geometrical intensity profile into different velocity groups. This analysis illustrates the evolution of molecular separation into distinct migrating populations within the injector itself. The present study performed DNA injections within microfabricated devices imposing run voltages between 85 and 850 V/cm. Data from 3 different offset lengths of a double-T cross-injector, 10 different applied voltages, and 2 different sample preparation protocols are presented.
Keyword:
CAPILLARY-ZONE-ELECTROPHORESIS
SAMPLE STACKING
DNA
PRINCIPLES
SEPARATION
REPTATION
GEOMETRY
MATRICES
DEVICES
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期刊

Analytical Chemistry 封面图
Analytical Chemistry
IF:
6.7
论文数:
4.7W
被引数:
15.9W

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引用论文

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