120th General Meeting of the KCS

Type Oral Presentation
Area Oral Presentation of Young Analytical Chemists II
Room No. Room C308+C309
Time FRI 10:27-:
Code ANAL2.O-34
Subject Application of gradient generating microdroplet-based chips for rapid and sensitive bioanalysis
Authors Jinhyeok Jeon, JAEBUM CHOO*
Department of Bionano Technology, Hanyang University, Korea
Abstract Microfluidic technology have recently emerged as an efficient tool for the study of various chemical or biological reactions. Recently, we reported that high-throughput chemical or biological reactions could be performed in a continuous flow microfluidic channel with an automatic manner. However, there is a “memory effect” problem in the continuous flow system. Samples in the continuous stream could be stacked in the wall of a microfluidic channel, and they may occur unwanted flow hindrance. To resolve this problem, we recently developed a novel gradient microdroplet system. In this system, the sample stacking problem can be solved since two-phase liquid/liquid segmented flow reduces the memory effect. A serial dilution of reagent can be achieved in a stepwise manner using microfluidic concentration gradient generators. Then, desired concentrations of a reagent were sequentially trapped by a small volume of droplets to prevent the sample stacking. We believe that this microdroplet system will be of significant utility in monitoring chemical and biological effects for various concentrations of a reagent.
E-mail jeonjh1004@naver.com