from 28 June 2015 to 3 July 2015 (Africa/Johannesburg)
Africa/Johannesburg timezone
SAIP2015 Proceeding published on 17 July 2016
Home > Timetable > Session details > Contribution details
PDF | XML | iCal

Embedding of noble metal nanoparticles and study of optical and photoluminescence properties induced by ion irradiation

Presented by Dr. Jai PRAKASH on 2 Jul 2015 from 09:40 to 10:00
Type: Oral Presentation
Session: DPCMM
Track: Track A - Division for Physics of Condensed Matter and Materials

Abstract

Recent advances in nanotechnology resulted in a new class of nanomaterials with optical as well as luminescence properties called noble metal fluorescent nanoparticles. These noble metal nanoparticles have shown potential applications in many fields like optical memory, catalysis and sensor technologies [1]. The present work reports on 150 keV Ar ion beam irradiation of thin Au film on polymer substrates including dewetting in thin film and subsequent formation of spherical Au nanoparticles that at a proper fluence eventually become embedded into the substrate [2]. Au nanoparticles embedded in and located on the surface were characterised and studied by scanning electron microscopy (SEM), atomic force microscopy (AFM), transmission electron microscopy (TEM) and Rutherford backscattering spectrometry (RBS) [3]. These Au nanoparticles exhibit the presence of absorption peaks in the visible regions due to the surface plasmon resonance (SPR) oscillations as investigated by UV-Vis spectroscopy. Photoluminescence study using the 325 nm He-Cd laser excitation will also be discussed. References: 1. Li-Yi Chen, Chia-Wei Wang, Zhiqin Yuan, and Huan-Tsung Chang, Analytical Chemistry, 87 (2015) 216. 2. Jai Prakash, A. Tripathi, S. Gautam, K. H. Chae, V. Rigato, J. Tripathi, K. Asokan, Mat. Chem. Phys. 147 (2014) 920 3. Jai Prakash, A. Tripathi, V. Rigato, J.C.Pivin, Jalaj Tripathi, K.H.Chae, S.Gautam, P.Kumar, K. Asokan, D.K.Avasthi, , J. Phys.D: Appl. Phys. 44 (2011) 125302. Acknowledgement: Author (JP) acknowledges the help and scientific discussions from Dr. D. K.Avasthi, Dr. A. Tripathi, and Dr. Pravin Kumar for providing LEIBF facility at IUAC, New Delhi.

Award

No

Level

N/A

Supervisor

Prof. H.C.Swart Department of Physics, University of the Free State (UFS), Bloemfontein, ZA 9300, South Africa

Paper

yes

Permission

Yes

Primary authors

  • Dr. Jai PRAKASH Department of Physics, University of the Free State, (UFS), Bloemfontein, ZA 9300, South Africa
More

Co-authors

  • Dr. Vinod KUMAR Department of Physics, University of the Free State (UFS), Bloemfontein, ZA 9300, South Africa
  • Prof. R E KROON Department of Physics, University of the Free State (UFS), Bloemfontein, ZA 9300, South Africa
  • Dr. K ASOKAN Inter University Accelerator Centre (IUAC), Aruna Asif Ali Marg, New Delhi 110067, India
  • Dr. V RIGATO INFN Laboratori Nazionali di Legnaro, Via Romea. 4, 35020 Legnaro, Padova, Italy
More