Study of microscale hydraulic jump phenomenon for hydrodynamic trap-and-release of microparticles

Younggeun Park, Debkishore Mitra, Luke P. Lee, Yeonho Choi, Taewook Kang

Research output: Contribution to journalArticlepeer-review


Easy trap-and-release of microparticles is necessary to study biological cellular behavior. The hydraulic jump phenomenon inspired us to conceive a microfluidic device for the hydrodynamic trap-and-release of microparticles. A sudden height increase in a microfluidic channel leads to a dramatic decrease in flow velocity, allowing effective trapping of the microparticles by energy conversion. The trapped particles can be released by stronger inertial force based on simply increasing the flow velocity. We present a systematic, numerical study of trap-and-release of the microparticles using multiphase Navier-Stokes equations. Effect of geometry flow velocity, particle diameter, and adhesion force on trap-and-release was studied.

Original languageEnglish
Pages (from-to)1076-1082
Number of pages7
JournalIEEE Transactions on Information Theory
Issue number3
Publication statusPublished - 1993

ASJC Scopus subject areas

  • Information Systems
  • Computer Science Applications
  • Library and Information Sciences


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