TY - GEN
T1 - Microfabricated nanowire diluter for controlled assembly of nanowires
AU - Hyeun, Joong Yoon
AU - Jin, Ho Yang
AU - Sang, Sik Yang
AU - Yang, Eui Hyeok
PY - 2009
Y1 - 2009
N2 - The controlled assembly of nanowires is essential for nanoscale processes. The diclectrophoretic (DEP) assembly process enables a very simple and efficient assembly; however, controlling the number and dimension of nanowires to bridge electrodes is extremely intricate. The micromachined nanowire diluter presented in this paper can automatically dilute and sort nanowires in solution without requiring conventional centrifuge equipment. The device consists of a glass substrate with an array of gold electrode pairs and a PDMS microchannel. Nickel nanowires (30 μm-long) were fabricated by a template-directed electrodeposition process using nanoporous alumina templates. A liquid solution containing nanowires was injected into an inlet of the diluter. Pulsed voltages were applied to 16 pairs of electrodes. The nanowires were subsequently trapped or released in the microchannel at specific pulsed electric fields. As a result, the number of nanowires at the outlet of the channel was dramatically reduced, implying that the device presented here can effectively dilute nanowire suspensions for controlled assembly.
AB - The controlled assembly of nanowires is essential for nanoscale processes. The diclectrophoretic (DEP) assembly process enables a very simple and efficient assembly; however, controlling the number and dimension of nanowires to bridge electrodes is extremely intricate. The micromachined nanowire diluter presented in this paper can automatically dilute and sort nanowires in solution without requiring conventional centrifuge equipment. The device consists of a glass substrate with an array of gold electrode pairs and a PDMS microchannel. Nickel nanowires (30 μm-long) were fabricated by a template-directed electrodeposition process using nanoporous alumina templates. A liquid solution containing nanowires was injected into an inlet of the diluter. Pulsed voltages were applied to 16 pairs of electrodes. The nanowires were subsequently trapped or released in the microchannel at specific pulsed electric fields. As a result, the number of nanowires at the outlet of the channel was dramatically reduced, implying that the device presented here can effectively dilute nanowire suspensions for controlled assembly.
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U2 - 10.1115/IMECE2008-67865
DO - 10.1115/IMECE2008-67865
M3 - Conference contribution
AN - SCOPUS:70049096502
SN - 9780791848746
T3 - ASME International Mechanical Engineering Congress and Exposition, Proceedings
SP - 781
EP - 784
BT - 2008 Proceedings of ASME International Mechanical Engineering Congress and Exposition, IMECE 2008
T2 - 2008 ASME International Mechanical Engineering Congress and Exposition, IMECE 2008
Y2 - 31 October 2008 through 6 November 2008
ER -