Investigations of surface-enhanced Raman scattering performance of silver nanostructured films prepared by glancing-angle physical vapor deposition

Name: Nutdanai Bodinthitikul

Organization : King Mongkut's University of Technology Thonburi. Faculty of Science

Email : nutdanai59@hotmail.com

Name: Tossaporn Lertvanithphol

Organization : National Electronics and Computer Technology Center. Opto-Electrochemical Technology

Name: Tossaporn Lertvanithphol

Organization : King Mongkut's Institute of Technology Ladkrabang. Faculty of Science

Name: Kunwara Techasuksakul

Organization : Asian Institute of Technology. Nanotechnology Center, School of Engineering and Technology

Name: Mati Horprathum

Organization : Asian Institute of Technology. School of Engineering and Technology

Name: Noppadon Nuntawong

Organization : National Electronics and Computer Technology Center. Opto-Electrochemical Technology

Name: Worawarong Rakreungdet

Organization : The Institute for the Promotion of Teaching Science and Technology

Name: Tula Jutarosaga

Organization : King Mongkut's University of Technology Thonburi. Faculty of Science

Name: Pitak Eiamchai

Organization : The Institute for the Promotion of Teaching Science and Technology

keyword: Silver nanostructured films

LCSH: Thin films

LCSH: Nanostructured materials

Abstract: Silver nanostructured films were deposited on silicon wafers via magnetron sputtering system with glancing-angle deposition (GLAD) technique as surface-enhanced Raman scattering (SERS) substrates. With controlled thickness, the films were deposited with fixed angle at 85 degrees and varied rotational speed at 5.0 and 0.2 rpm. The prepared samples were investigated for the physical topologies by field-emission scanning electron microscopy (FE-SEM), for the SERS-active performance by Raman spectroscopy, and for the optical characteristics by spectroscopic ellipsometry (SE). The FE-SEM images showed that the films morphologies changed from vertically aligned nanorods to nanospirals when the rotational speed was varied at 5.0 and 0.2 rpm, respectively. The Raman signals of dye indicators, i.e., methylene blue (MB) and rhodamine 6G (R6G), and organic probe molecules, i.e., 4-aminothiophenol (4-ATP) and 4-mercapto benzoic acid (4-MBA) were measured at laser wavelength of 473, 532, 633 and 785 nm after immersed the samples in those solutions. The SERS results indicated that the films could be used to enhance the Raman signals of test solution. In addition, the SE was used to investigate the dielectric function of the prepared samples which would be discussed in relation with the SERS enhancement

King Mongkut's University of Technology North Bangkok. Central Library

Address: BANGKOK

Email: library@kmutnb.ac.th

Created: 2019

Modified: 2019-10-09

Issued: 2019-10-09

บทความ/Article

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BibliograpyCitation : In Chemical Society of Thailand under the Patronage of Professor Dr. HRH Princess Chulabhorn. Pure and Applied Chemistry International Conference 2019 (PACCON 2019) (MN186-193). Bangkok : Mahidol University

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