Electrokinetic focusing injection methods on microfluidic devices

Lung-Ming Fu, Ruey-Jen Yang, Gwo-Bin Lee

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

92 Citations (Scopus)

Abstract

This paper presents an experimental and numerical investigation into electrokinetic focusing injection on microfluidic chips. The valving characteristics on microfluidic devices are controlled through appropriate manipulations of the electric potential strengths during the sample loading and dispensing steps. The present study also addresses the design and testing of various injection systems used to deliver a sample plug. A novel doublecross injection microfluidic chip is fabricated, which employs electrokinetic focusing to deliver sample plugs of variable volume. The proposed design combines several functions of traditional sample plug injection systems on a single microfluidic chip. The injection technique uses an unique sequence of loading steps with different electric potential distributions and magnitudes within the various channels to effectuate a virtual valve.
Original languageEnglish
Pages (from-to)1905-1910
JournalAnalytical Chemistry
Volume75
Issue number8
DOIs
Publication statusPublished - 15 Apr 2003
Externally publishedYes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Fingerprint

Dive into the research topics of 'Electrokinetic focusing injection methods on microfluidic devices'. Together they form a unique fingerprint.

Cite this