Electrical circuits from capillary flow driven evaporation deposition of carbon nanotube ink in non-porous V-grooves

Fen Shao, Tuck Ng, Jing Fu, Wei Shen, Yeong Ling

Research output: Contribution to journalArticleResearchpeer-review

13 Citations (Scopus)


Low cost pliable electronics portend the advancement of novel inexpensive microfluidic electrochemical devices. In the direct printing approach, the manner of deposition of conductive material from a liquid suspension to ensure electrical continuity is crucial. We describe here an approach in which V-groove networks that make up the path of circuitry are first scribed on non-porous inexpensive surfaces. Liquid drops of carbon nanotube ink are then placed on the surface adjacent to the V-grooves to enable wicking to produce the electrical circuit. This method essentially bypasses the need for inkjet printing. We investigate the basic efficacy of the conductive networks developed using this approach and demonstrate its use in generating electrically driven liquid flow of particles in a simple open capillary channel.
Original languageEnglish
Pages (from-to)425 - 430
Number of pages6
JournalJournal of Colloid and Interface Science
Issue number1
Publication statusPublished - 2011

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