PDMS-Au/Ag Nanocomposite Films as Highly Sensitive SERS Substrates

Proceedings

Csarnovics, István¹  Bonyár, Attila²  Izsold, Zsanett³  Borók, Alexandra⁴  Himics, László⁵ 

[1] Author to whom correspondence should be addressed.;Department of Electronics Technology, Budapest University of Technology and Economics, H-1111 Budapest, Hungary;Department of Experimental Physics, University of Debrecen, H-4032 Debrecen, Hungary;Institute for Solid State Physics and Optics, Wigner Research Centre for Physics of the Hungarian Academy of Sciences, H-1121 Budapest, Hungary;Presented at the Eurosensors 2018 Conference, Graz, Austria, 9–12 September 2018

关键词: Raman-spectroscopy;    SERS;    nanocomposites;    PDMS;    gold;    silver;   

DOI  :  10.3390/proceedings2131060

学科分类：社会科学、人文和艺术（综合）

来源: mdpi

【 摘 要 】

Polydimethylsiloxane (PDMS)–gold/silver nanoparticle composite films were synthetized in situ by using a simple method, which is based on the reduction of chloroauric acid (HAuCl4) or silver nitrate solution (AgNO3) by the PDMS membrane. A method to monitor the development of the plasmonic absorbance peak in situ (during the synthesis of the nanoparticles) is introduced in order to provide a convenient way to investigate the effect of the technological parameters on the position of the resulting peak. The resulting composite films were tested as SERS substrates at two excitation wavelengths (488 nm, 785 nm) and the preliminary results indicate that they are promising candidates for this application, with high sensitivities accompanied by cheap fabrication costs.

【 授权许可】

CC BY