title: High performance microfluidic capillary electrophoresis devices.
abstract: This paper presents a novel microfluidic capillary electrophoresis (CE) device featuring a double-T-form injection system and an expansion chamber located at the inlet of the separation channel. This study addresses the principal material transport mechanisms depending on parameters such as the expansion ratio, the expansion length, the fluid flow. Its design utilizes a double-L injection technique and combines the expansion chamber to minimize the sample leakage effect and to deliver a high-quality sample plug into the separation channel so that the detection performance of the device is enhanced. Experimental and numerical testing of the proposed microfluidic device that integrates an expansion chamber located at the inlet of the separation channel confirms its ability to increase the separation efficiency by improving the sample plug shape and orientation. The novel microfluidic capillary electrophoresis device presented in this paper has demonstrated a sound potential for future use in high-quality, high-throughput chemical analysis applications and throughout the micro-total-analysis systems field.
authors.affiliation: Department of Materials Engineering, National Pingtung University of Science and Technology, Pingtung, Taiwan 912.
authors.forename: Lung-Ming
authors.initials: LM
authors.lastname: Fu
authors.forename: Jik-Chang
authors.initials: JC
authors.lastname: Leong
authors.forename: Chiu-Feng
authors.initials: CF
authors.lastname: Lin
authors.forename: Chang-Hsien
authors.initials: CH
authors.lastname: Tai
authors.forename: Chien-Hsiung
authors.initials: CH
authors.lastname: Tsai
mesh_terms: D017076:Computer-Aided Design; D019075:Electrophoresis, Capillary / Q000295:instrumentation* / Q000379:methods; D004867:Equipment Design; D019544:Equipment Failure Analysis; D017022:Flow Injection Analysis / Q000295:instrumentation* / Q000379:methods; D046210:Microfluidic Analytical Techniques / Q000295:instrumentation* / Q000379:methods