High-frequency micromechanical resonators from aluminium-carbon nanotube nanolaminates

Jung Hoon Bak, Young Duck Kim, Seung Sae Hong, Byung Yang Lee, Seung Ran Lee, Jae Hyuck Jang, Miyoung Kim, Kookrin Char, Seunghun Hong, Yun Daniel Park

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

At micro- and nanoscales, materials with high Youngs moduli and low densities are of great interest for high-frequency micromechanical resonator devices. Incorporating carbon nanotubes (CNTs), with their unmatched properties, has added functionality to many man-made composites. We report on the fabrication of 100-nm-thick laminates by sputter-deposition of aluminium onto a two-dimensional single-walled CNT network. These nanolaminatescomposed of Al, its native oxide Al"2O"3 and CNTsare fashioned, in a scalable manner, into suspended doubly clamped micromechanical beams. Dynamic flexural measurements show marked increases in resonant frequencies for nanolaminates with Al-CNT laminae. Such increases, further supported by quasi-static flexural measurements, are partly attributable to enhancements in elastic properties arising from the addition of CNTs. As a consequence, these nanolaminate micromechanical resonators show significant suppression of mechanical nonlinearity and enhanced strength, both of which are advantageous for practical applications and analogous to biological nanocomposites, similarly composed of high-aspect-ratio, mechanically superior mineral platelets in a soft protein matrix.

Original languageEnglish
Pages (from-to)459-463
Number of pages5
JournalNature Materials
Volume7
Issue number6
DOIs
Publication statusPublished - 2008 Jun 1
Externally publishedYes

Fingerprint

Micromechanical resonators
Carbon Nanotubes
Aluminum
Carbon nanotubes
resonators
carbon nanotubes
aluminum
Sputter deposition
Single-walled carbon nanotubes (SWCN)
Platelets
Nanocomposites
Oxides
Laminates
Minerals
Aspect ratio
Elastic Modulus
Natural frequencies
Elastic moduli
high aspect ratio
platelets

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Bak, J. H., Kim, Y. D., Hong, S. S., Lee, B. Y., Lee, S. R., Jang, J. H., ... Park, Y. D. (2008). High-frequency micromechanical resonators from aluminium-carbon nanotube nanolaminates. Nature Materials, 7(6), 459-463. https://doi.org/10.1038/nmat2181

High-frequency micromechanical resonators from aluminium-carbon nanotube nanolaminates. / Bak, Jung Hoon; Kim, Young Duck; Hong, Seung Sae; Lee, Byung Yang; Lee, Seung Ran; Jang, Jae Hyuck; Kim, Miyoung; Char, Kookrin; Hong, Seunghun; Park, Yun Daniel.

In: Nature Materials, Vol. 7, No. 6, 01.06.2008, p. 459-463.

Research output: Contribution to journalArticle

Bak, JH, Kim, YD, Hong, SS, Lee, BY, Lee, SR, Jang, JH, Kim, M, Char, K, Hong, S & Park, YD 2008, 'High-frequency micromechanical resonators from aluminium-carbon nanotube nanolaminates', Nature Materials, vol. 7, no. 6, pp. 459-463. https://doi.org/10.1038/nmat2181
Bak, Jung Hoon ; Kim, Young Duck ; Hong, Seung Sae ; Lee, Byung Yang ; Lee, Seung Ran ; Jang, Jae Hyuck ; Kim, Miyoung ; Char, Kookrin ; Hong, Seunghun ; Park, Yun Daniel. / High-frequency micromechanical resonators from aluminium-carbon nanotube nanolaminates. In: Nature Materials. 2008 ; Vol. 7, No. 6. pp. 459-463.
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