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Flow conveying and diagnosis with carbon nanotube arrays

Zhou, Jijie J. and Noca, Flavio and Gharib, Morteza (2006) Flow conveying and diagnosis with carbon nanotube arrays. Nanotechnology, 17 (19). pp. 4845-4853. ISSN 0957-4484. https://resolver.caltech.edu/CaltechAUTHORS:ZHOnanotech06

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Abstract

Dense arrays of aligned carbon nanotubes are designed into strips, nanowicks, as a miniature wicking element for liquid delivery and potential microfluidic chemical analysis devices. Liquid wicks away along the nanowicks spontaneously. This delivery function of nanowicks enables novel fluid transport devices to run without any power input, moving parts or external pump. Flow around the opaque nanotubes can be detected either directly or indirectly. Direct signals of the flow come out of dyed liquid or from the liquid–air interface; indirect signals are detected through observing surface-tension-induced deformation and dislocation of the nanotubes. Here we show that flow progression around and inside nanowicks is sensitive to liquid properties. Different flow progression leaves different traces of liquid. These traces not only allow liquid diagnosis any time after sampling, but also enable analysis of flow at a nanoscale resolution with scanning electron microscopy.


Item Type:Article
ORCID:
AuthorORCID
Gharib, Morteza0000-0002-2204-9302
Additional Information:© 2006 IOP Publishing Limited. Received 1 June 2006, in final form 18 July 2006. Published 7 September 2006. Print publication: Issue 19 (14 October 2006). We would like to thank Michael J Bronikowski for growing the nanotubes for this work in Microdevices Laboratory, Jet Propulsion Laboratory. This work was supported by the NASA Office of Biological and Physical Research (Award No 04520-06); and the NSF NER Program (Award CTS-030473).
Group:GALCIT
Funders:
Funding AgencyGrant Number
NASA04520-06
NSFCTS-030473
Issue or Number:19
Record Number:CaltechAUTHORS:ZHOnanotech06
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:ZHOnanotech06
Alternative URL:http://dx.doi.org/10.1088/0957-4484/17/19/011
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:4827
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:11 Sep 2006
Last Modified:02 Oct 2019 23:16

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