Volume 253, Issue 12 pp. 2440-2445
Original Paper

Optical properties of silica aerogels with embedded multiwalled carbon nanotubes

Alexander I. Chernov

Corresponding Author

Alexander I. Chernov

Prokhorov General Physics Institute, RAS, 38 Vavilov str., 119991 Moscow, Russia

National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Kashirskoe hwy. 31, 115409 Moscow, Russia

Corresponding author: e-mail [email protected], Tel/Fax: +74995038206

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Alexander Y. Predein

Alexander Y. Predein

Boreskov Institute of Catalysis SB RAS, Lavrentieva ave. 5, 630090 Novosibirsk, Russia

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Alexander F. Danilyuk

Alexander F. Danilyuk

Boreskov Institute of Catalysis SB RAS, Lavrentieva ave. 5, 630090 Novosibirsk, Russia

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Vladimir L. Kuznetsov

Vladimir L. Kuznetsov

Boreskov Institute of Catalysis SB RAS, Lavrentieva ave. 5, 630090 Novosibirsk, Russia

Novosibirsk State University, Pirogova 2, 630090 Novosibirsk, Russia

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Tatyana V. Larina

Tatyana V. Larina

Boreskov Institute of Catalysis SB RAS, Lavrentieva ave. 5, 630090 Novosibirsk, Russia

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Elena D. Obraztsova

Elena D. Obraztsova

Prokhorov General Physics Institute, RAS, 38 Vavilov str., 119991 Moscow, Russia

National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Kashirskoe hwy. 31, 115409 Moscow, Russia

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First published: 18 July 2016
Citations: 16

Abstract

Multiwalled carbon nanotubes (MWCNTs) were successfully incorporated inside silica aerogel matrix. Solid composite materials were investigated by high-resolution transmission microscopy, scanning electron microscopy, optical spectroscopy. MWCNTs in the form of small bundles and individual tubes get locked inside the aerogel between its pores resulting in the local solution-free environment for nanotubes. Optical transmission of the composite material can be modified by the amount of the added MWCNTs. Nonlinear optical properties were studied by a Z-scan technique. Composite materials demonstrate saturable absorption for femtosecond laser pulses at 515 nm wavelength that are attributed to the properties of embedded nanotubes. Silica aerogels possess significantly better thermal stability compared to polymer matrices, hosts that are frequently used for saturable absorption applications of carbon nanotubes. Solid and lightweight silica aerogels with embedded nanotubes can be used as optical elements for various photonic devices.pssb201600326-gra-0001

Photo of silica aerogel with embedded MWCNTs. Normalized Z-scan transmittance of silica aerogel with nanotubes for two different on-focus intensities.

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