Near-Field Hot Spots in Gold Nanoplasmonic Templates and Their Use for Surface Enhanced Raman Scattering Sensing Application
Author
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-5, 5 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-04-14
Country of Publication
Egypt
No. of Pages
5
Main Subjects
Natural & Life Sciences (Multidisciplinary)
Abstract EN
Finite difference time domain (FDTD) method is adapted to investigate near-field enhancement effects on plasmonic structures (patterned in gold film) such as concentric rings with small separation, square, and rectangle.
The near-fields effect on surface enhanced Raman scattering (SERS) is typically studied on square and rectangular structures.
These metal structures are fabricated by laser interference lithography.
Raman active molecules (Rhodamine 6G in PMMA (polymethyl methacrylate)) are spread onto patterned structure by spin coating, and Renishaw inVia Raman spectrometer was used to study SERS.
Typical SERS enhancement of the order of 105 is seen for square and rectangular structures.
It is observed that the corner points and edges of square and rectangular structures are most sensitive to concentrate near fields.
In the case of concentric rings, huge near fields are seen to exist at the gap between the metal rings.
Concentric rings are proposed to be very effective structure for SERS sensing applications such as molecular identification and biological mapping.
American Psychological Association (APA)
Mandal, Prasanta. 2014. Near-Field Hot Spots in Gold Nanoplasmonic Templates and Their Use for Surface Enhanced Raman Scattering Sensing Application. Conference Papers in Science،Vol. 2014, no. 2014, pp.1-5.
https://search.emarefa.net/detail/BIM-468876
Modern Language Association (MLA)
Mandal, Prasanta. Near-Field Hot Spots in Gold Nanoplasmonic Templates and Their Use for Surface Enhanced Raman Scattering Sensing Application. Conference Papers in Science No. 2014 (2014), pp.1-5.
https://search.emarefa.net/detail/BIM-468876
American Medical Association (AMA)
Mandal, Prasanta. Near-Field Hot Spots in Gold Nanoplasmonic Templates and Their Use for Surface Enhanced Raman Scattering Sensing Application. Conference Papers in Science. 2014. Vol. 2014, no. 2014, pp.1-5.
https://search.emarefa.net/detail/BIM-468876
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-468876