Tailoring The Size Of Gold Nanoparticles By Electron Beam Inside Transmission Electron Microscope

Y. K. Mishra1*, S. Mohapatra2,  D. K. Avasthi3, N. P. Lalla4, Ajay Gupta

1Functional Nanomaterials, Institute for Materials Science, Faculty of Engineering CAU Kiel, Kaiserstr 2, 24143 Kiel, Germany

2University School of Basic and Applied Sciences, GGS Indraprastha University Kashmere Gate, Delhi 110403, India

3Inter University Accelerator Centre, Post Box -10502, New Delhi 110067, India

4UGC-DAE-CSR, University Campus, Khandwa Road, Indore 452017, India

Adv. Mater. Lett., 2010, 1 (2), pp 151-155

DOI: 10.5185/amlett.2010.4116

Publication Date (Web): Apr 08, 2012

E-mail: ykm@tf-uni-kiel.de

Abstract


Au nanoparticles (NPs) embedded in silica matrix were synthesized by atom beam co-sputtering and investigated in detail by transmission electron microscopy (TEM). A study on electron beam induced tailoring of size of Au nanoparticles has been performed in an in-situ TEM experiment as a function of electron irradiation time. This study concludes that electron beam irradiation can result in a controlled growth of NPs in proportion to irradiation fluence. Analytical calculations for electron energy loss in Au NPs and fused silica have been performed, which indicate that the observed growth of Au NPs in present case is due to rise in temperature of Au NPs and surrounding silica.

Keywords

Gold nanoparticles, electron beam, transmission electron microscopy

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