Carbon nanotubes as heating elements for micro-bubble generation

Wenli Zhou; Gary Chow; Wen J. Li; Philip Leong

doi:10.1109/NEMS.2006.334636

Carbon nanotubes as heating elements for micro-bubble generation

Wenli Zhou, Gary Chow, Wen J. Li, Philip Leong

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

10 Citations (Scopus)

Abstract

Development and preliminary characterization on the performance of a micro-bubble generator using Carbon Nanotubes (CNTs) as heating elements are presented. Dielectrophoretic force was used to align CNTs between fabricated micro-electrodes. The contacts between the CNTs and electrodes were fixed by patterned SiO₂ thin film. Localized high temperature due to Joule-heating generated by an AC current of a few hundred μA (in general ≤ 100Hz) in the carbon nanotubes vaporized surrounding water and generated micron sized bubbles (with diameter of 5μm detectable under normal optical microscope). These experimental evidence indicate that exposed CNTs may function as a single nucleation site for bubble generation. The power required to generate these bubbles can be as small as 337μW, which is with 1-2 order of magnitude smaller than that of typical metal or polysilicon based MEMS heaters. Precisely controlled micro bubble generation may find promising applications in ink-jet printing, micro-fluidic visualization, or micro-fluidic based bio-manipulation. © 2006 IEEE.

Original language	English
Title of host publication	Proceedings of 1st IEEE International Conference on Nano Micro Engineered and Molecular Systems, 1st IEEE-NEMS
Pages	1084-1087
DOIs	https://doi.org/10.1109/NEMS.2006.334636
Publication status	Published - 2006
Externally published	Yes
Event	1st IEEE International Conference on Nano Micro Engineered and Molecular Systems, 1st IEEE-NEMS - Zhuhai, China Duration: 18 Jan 2006 → 21 Jan 2006

Conference

Conference	1st IEEE International Conference on Nano Micro Engineered and Molecular Systems, 1st IEEE-NEMS
Place	China
City	Zhuhai
Period	18/01/06 → 21/01/06

Research Keywords

Carbon nanotubes
Dielectrophoretic manipulation
Joule heating
MEMS
Microbubble generation

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10.1109/NEMS.2006.334636

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@inproceedings{753030f737c34a729e85a808879c5652,

title = "Carbon nanotubes as heating elements for micro-bubble generation",

abstract = "Development and preliminary characterization on the performance of a micro-bubble generator using Carbon Nanotubes (CNTs) as heating elements are presented. Dielectrophoretic force was used to align CNTs between fabricated micro-electrodes. The contacts between the CNTs and electrodes were fixed by patterned SiO2 thin film. Localized high temperature due to Joule-heating generated by an AC current of a few hundred μA (in general ≤ 100Hz) in the carbon nanotubes vaporized surrounding water and generated micron sized bubbles (with diameter of 5μm detectable under normal optical microscope). These experimental evidence indicate that exposed CNTs may function as a single nucleation site for bubble generation. The power required to generate these bubbles can be as small as 337μW, which is with 1-2 order of magnitude smaller than that of typical metal or polysilicon based MEMS heaters. Precisely controlled micro bubble generation may find promising applications in ink-jet printing, micro-fluidic visualization, or micro-fluidic based bio-manipulation. {\textcopyright} 2006 IEEE.",

keywords = "Carbon nanotubes, Dielectrophoretic manipulation, Joule heating, MEMS, Microbubble generation",

author = "Wenli Zhou and Gary Chow and Li, {Wen J.} and Philip Leong",

year = "2006",

doi = "10.1109/NEMS.2006.334636",

language = "English",

isbn = "1424401402",

pages = "1084--1087",

booktitle = "Proceedings of 1st IEEE International Conference on Nano Micro Engineered and Molecular Systems, 1st IEEE-NEMS",

note = "1st IEEE International Conference on Nano Micro Engineered and Molecular Systems, 1st IEEE-NEMS ; Conference date: 18-01-2006 Through 21-01-2006",

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Zhou, W, Chow, G, Li, WJ & Leong, P 2006, Carbon nanotubes as heating elements for micro-bubble generation. in Proceedings of 1st IEEE International Conference on Nano Micro Engineered and Molecular Systems, 1st IEEE-NEMS., 4135135, pp. 1084-1087, 1st IEEE International Conference on Nano Micro Engineered and Molecular Systems, 1st IEEE-NEMS, Zhuhai, China, 18/01/06. https://doi.org/10.1109/NEMS.2006.334636

Carbon nanotubes as heating elements for micro-bubble generation. / Zhou, Wenli; Chow, Gary; Li, Wen J. et al.
Proceedings of 1st IEEE International Conference on Nano Micro Engineered and Molecular Systems, 1st IEEE-NEMS. 2006. p. 1084-1087 4135135.

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

TY - GEN

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AU - Zhou, Wenli

AU - Chow, Gary

AU - Li, Wen J.

AU - Leong, Philip

PY - 2006

Y1 - 2006

N2 - Development and preliminary characterization on the performance of a micro-bubble generator using Carbon Nanotubes (CNTs) as heating elements are presented. Dielectrophoretic force was used to align CNTs between fabricated micro-electrodes. The contacts between the CNTs and electrodes were fixed by patterned SiO2 thin film. Localized high temperature due to Joule-heating generated by an AC current of a few hundred μA (in general ≤ 100Hz) in the carbon nanotubes vaporized surrounding water and generated micron sized bubbles (with diameter of 5μm detectable under normal optical microscope). These experimental evidence indicate that exposed CNTs may function as a single nucleation site for bubble generation. The power required to generate these bubbles can be as small as 337μW, which is with 1-2 order of magnitude smaller than that of typical metal or polysilicon based MEMS heaters. Precisely controlled micro bubble generation may find promising applications in ink-jet printing, micro-fluidic visualization, or micro-fluidic based bio-manipulation. © 2006 IEEE.

AB - Development and preliminary characterization on the performance of a micro-bubble generator using Carbon Nanotubes (CNTs) as heating elements are presented. Dielectrophoretic force was used to align CNTs between fabricated micro-electrodes. The contacts between the CNTs and electrodes were fixed by patterned SiO2 thin film. Localized high temperature due to Joule-heating generated by an AC current of a few hundred μA (in general ≤ 100Hz) in the carbon nanotubes vaporized surrounding water and generated micron sized bubbles (with diameter of 5μm detectable under normal optical microscope). These experimental evidence indicate that exposed CNTs may function as a single nucleation site for bubble generation. The power required to generate these bubbles can be as small as 337μW, which is with 1-2 order of magnitude smaller than that of typical metal or polysilicon based MEMS heaters. Precisely controlled micro bubble generation may find promising applications in ink-jet printing, micro-fluidic visualization, or micro-fluidic based bio-manipulation. © 2006 IEEE.

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KW - Dielectrophoretic manipulation

KW - Joule heating

KW - MEMS

KW - Microbubble generation

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Y2 - 18 January 2006 through 21 January 2006

ER -

Carbon nanotubes as heating elements for micro-bubble generation

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