Improved optical limiting in dispersible carbon nanotubes and their metal oxide hybrids

Benoy Anand; Susana Addo Ntim; V. Sai Muthukumar; S. Siva Sankara Sai; Reji Philip; Somenath Mitra

doi:10.1016/j.carbon.2011.06.086

Improved optical limiting in dispersible carbon nanotubes and their metal oxide hybrids

Benoy Anand, Susana Addo Ntim, V. Sai Muthukumar, S. Siva Sankara Sai, Reji Philip, Somenath Mitra

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37 Scopus citations

Abstract

The mechanism and performance of optical limiting in carbon nanotubes (CNTs) and their metal oxide hybrids are presented. The mechanism of nonlinear absorption (NLA) in dispersed CNTs was an "effective" three-photon absorption arising due to sequential transitions between the real excited states. The effect of nonlinear scattering was minimal, and it was found that the metal oxide immobilization on the CNT surface does not alter either the mechanism of NLA, or the optical limiting threshold. With limiting thresholds in the range of 0.37-0.46 J/cm², these highly dispersible MWCNTs and their hybrids are excellent optical liming nanocarbons.

Original language	English (US)
Pages (from-to)	4767-4773
Number of pages	7
Journal	Carbon
Volume	49
Issue number	14
DOIs	https://doi.org/10.1016/j.carbon.2011.06.086
State	Published - Nov 1 2011

All Science Journal Classification (ASJC) codes

Chemistry(all)
Materials Science(all)

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10.1016/j.carbon.2011.06.086

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abstract = "The mechanism and performance of optical limiting in carbon nanotubes (CNTs) and their metal oxide hybrids are presented. The mechanism of nonlinear absorption (NLA) in dispersed CNTs was an {"}effective{"} three-photon absorption arising due to sequential transitions between the real excited states. The effect of nonlinear scattering was minimal, and it was found that the metal oxide immobilization on the CNT surface does not alter either the mechanism of NLA, or the optical limiting threshold. With limiting thresholds in the range of 0.37-0.46 J/cm2, these highly dispersible MWCNTs and their hybrids are excellent optical liming nanocarbons.",

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AU - Anand, Benoy

AU - Addo Ntim, Susana

AU - Sai Muthukumar, V.

AU - Siva Sankara Sai, S.

AU - Philip, Reji

AU - Mitra, Somenath

PY - 2011/11/1

Y1 - 2011/11/1

N2 - The mechanism and performance of optical limiting in carbon nanotubes (CNTs) and their metal oxide hybrids are presented. The mechanism of nonlinear absorption (NLA) in dispersed CNTs was an "effective" three-photon absorption arising due to sequential transitions between the real excited states. The effect of nonlinear scattering was minimal, and it was found that the metal oxide immobilization on the CNT surface does not alter either the mechanism of NLA, or the optical limiting threshold. With limiting thresholds in the range of 0.37-0.46 J/cm2, these highly dispersible MWCNTs and their hybrids are excellent optical liming nanocarbons.

AB - The mechanism and performance of optical limiting in carbon nanotubes (CNTs) and their metal oxide hybrids are presented. The mechanism of nonlinear absorption (NLA) in dispersed CNTs was an "effective" three-photon absorption arising due to sequential transitions between the real excited states. The effect of nonlinear scattering was minimal, and it was found that the metal oxide immobilization on the CNT surface does not alter either the mechanism of NLA, or the optical limiting threshold. With limiting thresholds in the range of 0.37-0.46 J/cm2, these highly dispersible MWCNTs and their hybrids are excellent optical liming nanocarbons.

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Improved optical limiting in dispersible carbon nanotubes and their metal oxide hybrids

Abstract

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