Understanding the Collective Coulomb Forces of the ions in the microfluidic channel

Author

Ho, Kung-Chu ; Lee, Chieh-Wei ; Lee, Ming-Lun ; Kuan, Chieh-Hsiung ; Chou, Nai-Kuan

Author_Institution

Grad. Inst. of Electron. Eng., Nat. Taiwan Univ., Taipei, Taiwan

fYear

2011

fDate

21-24 June 2011

Firstpage

1

Lastpage

2

Abstract

We utilized rapid prototyping technology to fabricate the resin substrate with a PMMA cover slide as close-ended chip to avoid evaporation. And we applied AC voltages in ionic solution to improve the S/N ratio. By measuring ionic phase during frequency shift, we acquired data in a complex form, that is, real and imaginary part of currents. The measuring system implemented in lock-in amplifier which can realize high-sensitivity. Base on this concept, we demand to develop a novel two-dimensional database of molecular detection in the future.

Keywords

amplifiers; chemical variables measurement; computerised instrumentation; evaporation; measurement systems; microchannel flow; microfabrication; resins; sensitivity; AC voltages; PMMA cover slide; close-ended chip; collective Coulomb force; frequency shift; ionic phase; lock-in amplifier; measurement system; microfluidic channel; molecular detection; rapid prototyping technology; resin substrate fabrication; two-dimensional database; Amplifiers; Damping; Ions; Mathematical model; Scattering; Semiconductor device measurement; Signal generators; Rapid prototyping; lock-in amplifier; molecular detection; two-dimensional database;

fLanguage

English

Publisher

ieee

Conference_Titel

Nanoelectronics Conference (INEC), 2011 IEEE 4th International

Conference_Location

Tao-Yuan

ISSN

2159-3523

Print_ISBN

978-1-4577-0379-9

Electronic_ISBN

2159-3523

Type

conf

DOI

10.1109/INEC.2011.5991784

Filename

5991784