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Bibliographic record number: 742399

Journal

Authors: Krce, Lucija; Bajan, Tamara; Krstulović, Nikša; Aviani, Ivica
Title: Laser synthesis and AFM characterization of colloidal silver nanoparticles
Source: 12th Greta Pifat-Mrzljak International School of Biophysics
Meeting: 12th Greta Pifat-Mrzljak International School of Biophysics
Location and date: Primošten, Hrvatska, 27.09. - 06.10.2014.
Keywords: laser ablation; silver nanoparticles; AFM
Abstract:
Nanoparticles of various materials are today implemented in wide variety of industrial, scientific and medical applications. Biocompatible nanoparticles are used for cell treatment ; as nano-biomarkers, for therapy and diagnostics. Nanoparticles can be synthesized conventionally either using wet chemistry methods or gas phase processes. Such nanoparticles are often characterized by impurities which are reaction products of additives and precursors. Laser ablation in liquids appeared to be a solution for that drawback. It is recognised as simple and versatile technique and there are almost no limitations in a selection of materials for the nanoparticle synthesis. The remarkable advantages of this technique over other techniques are absence of impurities in the final product (free of contaminating processes, chemical precursors not required), possibility of preparation of multicomponent nanoparticles, weak agglomeration, narrow size distribution of nanoparticles, etc. In our work we studied laser synthesized silver nanoparticles produced in water by ns Nd:YAG laser operating at 1064 nm with 100 mJ of output energy and 5 Hz of repetition rate. From AFM figures size- distribution of nanoparticles is obtained. Laser ablation is monitored by optical emission spectroscopy while colloidal solution is characterized by photospectrometry and photoluminescence. Our results show that average diameter of laser synthesized silver nanoparticles is around 10 nm and size distribution is relatively narrow. Our colloidal solution is very stable in time (few months) implying that nanoparticles are well dispersed and/or charged.
Type of meeting: Poster
Type of presentation in a journal: Abstract
Type of peer-review: No peer-review
Original language: ENG
Category: Znanstveni
Research fields:
Physics
Contrib. to CROSBI by: Ivica Aviani (aviani@ifs.hr), 17. Pro. 2014. u 17:21 sati



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