Gamma radiation-assisted diffusion of Au nanoparticles in nanocavities of polycarbonate: Nano-structural and surface properties

K. Hareesh; D. V. Sunitha; P. Ramya; J. F. Williams; S. Samarin; S. D. Dhole; G. Sanjeev

doi:10.1088/2053-1591/aaa14c

Gamma radiation-assisted diffusion of Au nanoparticles in nanocavities of polycarbonate: Nano-structural and surface properties

K. Hareesh, D. V. Sunitha, P. Ramya, J. F. Williams, S. Samarin, S. D. Dhole, G. Sanjeev

Department of Physics, Manipal Institute of Technology, Bengaluru

Research output: Contribution to journal › Article › peer-review

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Abstract

The in situ gamma ray-assisted diffusion of gold nanoparticles in a polycarbonate film modified the nano-structural and surface properties to enable control of functional use with decreases in the free volume nano-hole size and in the fractional free volume measured using positron annihilation lifetime spectroscopic techniques. Coincidenace Doppler broadened spectra showed the identifiable spreading of the gold broadened region of the intensity ratio relative to the pristine polycarbonate film. These results were further corroborated by x-ray photoelectron spectroscopy and Transmission electron microscopy which showed the diffused gold nanoparticles had an average size of about 8 nm, and also showed the bonding of gold nanoparticles with the oxygen functional groups of polycarbonate film.

Original language	English
Article number	015304
Journal	Materials Research Express
Volume	5
Issue number	1
DOIs	https://doi.org/10.1088/2053-1591/aaa14c
Publication status	Published - 01-2018

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Biomaterials
Surfaces, Coatings and Films
Polymers and Plastics
Metals and Alloys

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10.1088/2053-1591/aaa14c

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title = "Gamma radiation-assisted diffusion of Au nanoparticles in nanocavities of polycarbonate: Nano-structural and surface properties",

abstract = "The in situ gamma ray-assisted diffusion of gold nanoparticles in a polycarbonate film modified the nano-structural and surface properties to enable control of functional use with decreases in the free volume nano-hole size and in the fractional free volume measured using positron annihilation lifetime spectroscopic techniques. Coincidenace Doppler broadened spectra showed the identifiable spreading of the gold broadened region of the intensity ratio relative to the pristine polycarbonate film. These results were further corroborated by x-ray photoelectron spectroscopy and Transmission electron microscopy which showed the diffused gold nanoparticles had an average size of about 8 nm, and also showed the bonding of gold nanoparticles with the oxygen functional groups of polycarbonate film.",

author = "K. Hareesh and Sunitha, {D. V.} and P. Ramya and Williams, {J. F.} and S. Samarin and Dhole, {S. D.} and G. Sanjeev",

note = "Funding Information: The study was supported by the University of Western Australia and by two of the authors (JFW and SSN).KH acknowledges a Research Fellowship from the Endeavour Australia-India Education Council. The authors thank the referee for assistance with the interpretation of results and careful correction of the text. Publisher Copyright: {\textcopyright} 2018 IOP Publishing Ltd.",

year = "2018",

month = jan,

doi = "10.1088/2053-1591/aaa14c",

language = "English",

volume = "5",

journal = "Materials Research Express",

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T2 - Nano-structural and surface properties

AU - Hareesh, K.

AU - Sunitha, D. V.

AU - Ramya, P.

AU - Williams, J. F.

AU - Samarin, S.

AU - Dhole, S. D.

AU - Sanjeev, G.

N1 - Funding Information: The study was supported by the University of Western Australia and by two of the authors (JFW and SSN).KH acknowledges a Research Fellowship from the Endeavour Australia-India Education Council. The authors thank the referee for assistance with the interpretation of results and careful correction of the text. Publisher Copyright: © 2018 IOP Publishing Ltd.

PY - 2018/1

Y1 - 2018/1

N2 - The in situ gamma ray-assisted diffusion of gold nanoparticles in a polycarbonate film modified the nano-structural and surface properties to enable control of functional use with decreases in the free volume nano-hole size and in the fractional free volume measured using positron annihilation lifetime spectroscopic techniques. Coincidenace Doppler broadened spectra showed the identifiable spreading of the gold broadened region of the intensity ratio relative to the pristine polycarbonate film. These results were further corroborated by x-ray photoelectron spectroscopy and Transmission electron microscopy which showed the diffused gold nanoparticles had an average size of about 8 nm, and also showed the bonding of gold nanoparticles with the oxygen functional groups of polycarbonate film.

AB - The in situ gamma ray-assisted diffusion of gold nanoparticles in a polycarbonate film modified the nano-structural and surface properties to enable control of functional use with decreases in the free volume nano-hole size and in the fractional free volume measured using positron annihilation lifetime spectroscopic techniques. Coincidenace Doppler broadened spectra showed the identifiable spreading of the gold broadened region of the intensity ratio relative to the pristine polycarbonate film. These results were further corroborated by x-ray photoelectron spectroscopy and Transmission electron microscopy which showed the diffused gold nanoparticles had an average size of about 8 nm, and also showed the bonding of gold nanoparticles with the oxygen functional groups of polycarbonate film.

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Gamma radiation-assisted diffusion of Au nanoparticles in nanocavities of polycarbonate: Nano-structural and surface properties

Abstract

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