Photomelting and photofragmentation of silver nanoparticles suspended in ethanol

J. G. Ortega-Mendoza; C. Hernández-Álvarez; A. Padilla-Vivanco; C. Toxqui-Quitl; P. Zaca-Moran; F. Chávez; O. Goiz

doi:10.1117/12.2188730

9 October 2015 Photomelting and photofragmentation of silver nanoparticles suspended in ethanol

J. G. Ortega-Mendoza, C. Hernández-Álvarez, A. Padilla-Vivanco, C. Toxqui-Quitl, P. Zaca-Moran, F. Chávez, O. Goiz

Author Affiliations +

Proceedings Volume 9545, Nanophotonic Materials XII; 954510 (2015) https://doi.org/10.1117/12.2188730
Event: SPIE Nanoscience + Engineering, 2015, San Diego, California, United States

Abstract

An optical method to obtain a colloidal solution starting from a mixture of silver nanopowder and ethanol is presented. The particles of the silver nanopowder do not exhibit a specific shape, however in the colloidal solution are spherical. This method is carry out when the mixture is irradiated with a pulsed laser at 532 nm via optical fiber. Due to a stronger absorption of the laser light by silver nanoparticles arise both photofragmentation and photomelting processes. The photomelting process starts when the laser energy is 5 mJ/cm², inducing an enlargement of nanoparticles whereas the photofragmentation occurs when the laser energy is 25 mJ/cm² causing a reduction on their sizes (the higher energy is, the smaller nanoparticles are). Results show that it is possible to obtain a colloidal silver solution and to control the particle size by adjusting the laser energy. Experiments were performed at 5 and 25 mJ/cm², and the results are presented.

Citation Download Citation

J. G. Ortega-Mendoza, C. Hernández-Álvarez, A. Padilla-Vivanco, C. Toxqui-Quitl, P. Zaca-Moran, F. Chávez, and O. Goiz "Photomelting and photofragmentation of silver nanoparticles suspended in ethanol", Proc. SPIE 9545, Nanophotonic Materials XII, 954510 (9 October 2015); https://doi.org/10.1117/12.2188730

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE