Pressure-driven fluidic delivery through carbon tube bundles

Alexander V. Bazilevsky, Alexander Yarin, Constantine M. Megaridis

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

The aim of this work is to demonstrate controlled flow through macroscopically long (∼ 1 cm) carbon tubes (0.5-1.8 μm in radius). A model, high-throughput, pressure-driven fluidic setup, which features a large number of parallel carbon tubes forming a bundle, is fabricated and tested. The carbon tubes are synthesized and self-assembled via co-electrospinning and subsequent carbonization. The setup accommodates pressure-driven flows with flow discharge rates of the order of 1 nL s-1 (73 × 10 -11 kg s-1) for low-viscosity liquids and 30 nL s -1 (36.3 × 10-12 kg s-1) for gases into a water pool under imposed pressure drops below 4 bar. The measurements demonstrate the ability to sustain well-controlled laminar flows through these long carbon tube bundles and elucidate the main transport features. A novel procedure is also formulated to recover the flow-carrying tube inner-diameter distribution from the measured dependence of the fluid volumetric or mass flow rate on the imposed pressure drop.

Original languageEnglish
Pages (from-to)152-160
Number of pages9
JournalLab on a Chip - Miniaturisation for Chemistry and Biology
Volume8
Issue number1
DOIs
Publication statusPublished - 2007 Dec 28
Externally publishedYes

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ASJC Scopus subject areas

  • Clinical Biochemistry

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