Micro device Lab Co., Ltd 2 articles published in JoVE Engineering Microfluidic Acoustophoresis for Flowthrough Separation of Gram-Negative Bacteria using Aptamer Affinity Beads Hong Jin Choi1, Byung Woo Kim2, SangWook Lee3, Ok Chan Jeong1,2,4 1Department of Digital Anti-Aging Health Care, Inje University, 2Micro device Lab Co., Ltd, 3Biohealth Products Research Center (BPRC), Inje University, 4Department of Biomedical Engineering, Inje University This paper describesthe fabrication and operation of microfluidic acoustophoretic chips using the microfluidic acoustophoresis technique and aptamer-modified microbeads that can be used for fast, efficient isolation of Gram-negative bacteria from a medium. Engineering Pneumatically Driven Microfluidic Platform for Micro-Particle Concentration Hong Jin Choi1, Jong Hyun Lee2, Ok Chan Jeong1,2,3 1Department of Digital Anti-Aging Health Care, Inje University, 2Micro device Lab Co., Ltd, 3Department of Biomedical Engineering, Inje University The present protocol describes a pneumatic microfluidic platform that can be used for efficient microparticle concentration.