Characterization of a microscale thermal-electrical field-flow fractionation system

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Publication Type Manuscript
School or College College of Engineering
Department Mechanical Engineering
Creator Gale, Bruce K.
Other Author Sant, Himanshu J.
Title Characterization of a microscale thermal-electrical field-flow fractionation system
Date 2010
Description A microscale thermal-electrical field-flow fractionation (ThElFFF) channel is reported for the first time and preliminary characterization results show high retention at certain operating conditions including relatively high flow rates when compared to standard microscale electrical or thermal field-flow fractionation instruments. A new design is presented that simplifies manufacturing and assembly of the prototype and that can provide both an electrical field and a high temperature gradient (~ 106 ?C/m). Monodisperse particle retention is carried out with polystyrene nanoparticle samples to characterize the device. Retention ratios as low as 0.045 are observed with the ThElFFF instrument. Size selectivity of 1.77 was achieved for ThElFFF. The comparison with theory shows a marked deviation from the existing theory. Separation of a mixture of polystyrene particles is demonstrated for first time using a ThElFFF system by separating 130 nm carboxylated polystyrene and 209 nm polystyrene particles.
Type Text
Publisher International Association for Bridge and Structural Engineering (IABSE)
Volume 1225
First Page 174
Last Page 181
Language eng
Bibliographic Citation Sant, H. J., & Gale, B. K. (2010). Characterization of a microscale thermal-electrical field-flow fractionation system. Journal of Chromatography A, 1225, 174-81.
Rights Management ©International Association for Bridge and Structural Engineering (IABSE)
Format Medium application/pdf
Format Extent 1,147,720 bytes
Identifier ir-main,17131
ARK ark:/87278/s65x2tc0
Setname ir_uspace
Date Created 2012-06-13
Date Modified 2012-10-09
ID 705060
Reference URL https://collections.lib.utah.edu/ark:/87278/s65x2tc0
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