Title :
Gravure printed paper based substrate for detection of heavy metals using surface enhanced Raman spectroscopy (SERS)
Author :
Eshkeiti, Ali ; Rezaei, Mahdi ; Narakathu, Binu B. ; Reddy, Avuthu S. G. ; Emamian, Sepehr ; Atashbar, Massood Z.
Author_Institution :
Dept. of Electr. & Comput. Eng., Western Michigan Univ., Kalamazoo, MI, USA
Abstract :
A novel paper based surface enhancemed Raman spectroscopy (SERS) substrate was fabricated by gravure printing single and double layers of silver nanoparticle (NP) ink, with a particle size of ~20-50 nm, as metallization layer on a paper from Mitsubishi (NB-RC3GR120). The capability of the SERS substrate for detection of toxic heavy metal compounds such as mercury sulfide (HgS) was demonstrated. The SERS based response of the printed substrate produced an enhanced Raman signal when compared to target molecules adsorbed on bare paper. An enhancement factor of five orders of magnitude, due to existence of hot spots between NP, was obtained. In addition, the effect of bending of the flexible paper substrate on the intensity of the Raman spectrum was also investigated. An enhancement of 500 % in the intensity of Raman spectra was obtained for a bending of 70°. The SERS based response of the printed substrate is analyzed and presented in this paper.
Keywords :
Raman spectroscopy; bending; ink; mercury compounds; metallisation; nanoparticles; paper; particle size; printing; silver; surface enhanced Raman scattering; toxicology; Ag; HgS; Mitsubishi; NP; Raman signal enhancement; Raman spectrum intensity; SERS; bending effect; flexible paper substrate; gravure printed paper based substrate; metallization layer; silver nanoparticle ink; surface enhanced Raman spectroscopy; toxic heavy metal detection; Compounds; Ink; Printing; Raman scattering; Silver; Substrates;
Conference_Titel :
SENSORS, 2013 IEEE
Conference_Location :
Baltimore, MD
DOI :
10.1109/ICSENS.2013.6688292
