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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 12 — Jun. 8, 2009
  • pp: 9614–9619

Bright visible emission from carbon nanotubes spatially constrained on a micro-bubble

Gopika Ramanandan, A. K. Dharmadhikari, J. A. Dharmadhikari, Hema Ramachandran, and D. Mathur  »View Author Affiliations

Optics Express, Vol. 17, Issue 12, pp. 9614-9619 (2009)

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We report emission of broadband light in the spectral range 500 nm-900 nm from single walled carbon nanotubes (SWNTs) in a liquid environment upon irradiance by a very low power (typically <5 mW), continuous-wave laser source in a tweezers setup. We show (i) formation of micro-bubbles upon irradiation of fluids containing bundles of SWNTs, (ii) optical trapping of such micro-bubbles, (iii) adhesion of SWNTs on the surface of such micro-bubbles, and (iv) bright emission of white light due to tweezer-induced localized heating of spatially-constrained SWNTs.

© 2009 Optical Society of America

OCIS Codes
(350.4990) Other areas of optics : Particles
(350.5340) Other areas of optics : Photothermal effects

ToC Category:
Photothermal Effects

Original Manuscript: April 17, 2009
Revised Manuscript: May 20, 2009
Manuscript Accepted: May 20, 2009
Published: May 22, 2009

Gopika Ramanandan, A. K. Dharmadhikari, J. A. Dharmadhikari, Hema Ramachandran, and D. Mathur, "Bright visible emission from carbon nanotubes spatially constrained on a micro-bubble," Opt. Express 17, 9614-9619 (2009)

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