Detection of 2,4-dinitrotoluene (DNT) using gravure printed surface enhancement Raman spectroscopy (SERS) flexible substrate

Author

Emamian, Sepehr ; Eshkeiti, Ali ; Narakathu, Binu B. ; Avuthu, Sai G. R. ; Atashbar, Massood Z.

Author_Institution

Dept. of Electr. & Comput. Eng., Western Michigan Univ., Kalamazoo, MI, USA

fYear

2014

fDate

2-5 Nov. 2014

Firstpage

1069

Lastpage

1072

Abstract

In this work, gravure printing was used to fabricate a thin film of silver (Ag) nanoparticle ink on flexible polyethylene terephthalate (PET) sheet as an efficient surface enhanced Raman spectroscopy (SERS) substrate. The printed SERS substrate was used for the detection of an explosive organic compound: 2,4-dinitrotoluene (DNT), in vapor phase. An enhancement factor of four, in the intensity of the Raman spectrum of DNT vapor, was observed when compared to target molecules absorbed on bare PET. An increase in temperature, from 25 °C to 65 °C, demonstrated an 85 % decrease in the intensity of the Raman signal. The results obtained show the capability of the printed SERS substrate to be used in applications for the detection of explosive organic compounds.

Keywords

explosive detection; gas sensors; metallic thin films; nanoparticles; nanosensors; organic compounds; silver; spectrochemical analysis; surface enhanced Raman scattering; thin film sensors; 2,4-dinitrotoluene; Ag; DNT vapor; Gravure printed surface enhancement Raman spectroscopy; Raman spectrum; explosive organic compounds; polyethylene terephthalate sheet; printed SERS substrate; silver nanoparticle ink; temperature 25 degC to 65 degC; thin film; vapor phase; Explosives; Nanobioscience; Positron emission tomography; Raman scattering; Sensors; Silver; Substrates;

fLanguage

English

Publisher

ieee

Conference_Titel

SENSORS, 2014 IEEE

Conference_Location

Valencia

Type

conf

DOI

10.1109/ICSENS.2014.6985189

Filename

6985189