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Zeitschrift für Physikalische Chemie

International journal of research in physical chemistry and chemical physics

Editor-in-Chief: Rademann, Klaus


IMPACT FACTOR 2017: 1.144
5-year IMPACT FACTOR: 1.144

CiteScore 2017: 1.08

SCImago Journal Rank (SJR) 2017: 0.495
Source Normalized Impact per Paper (SNIP) 2017: 0.495

Online
ISSN
2196-7156
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Volume 232, Issue 9-11

Issues

Colloidal Photoluminescent Refractive Index Nanosensor Using Plasmonic Effects

Dmitry V. Guzatov / Sergey V. Gaponenko / Hilmi V. Demir
  • Department of Electrical and Electronics Engineering, Department of Physics, and UNAM–Institute of Materials Science and Nanotechnology, Bilkent University, Ankara 06800, Turkey
  • LUMINOUS! Center of Excellence for Semiconductor Lighting and Displays, School of Electrical and Electronic Engineering, School of Physical and Mathematical Sciences, Nanyang Technological University, 50 Nanyang Ave 639798, Singapore, Singapore
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Published Online: 2018-03-14 | DOI: https://doi.org/10.1515/zpch-2018-1127

Abstract

Fluorescence enhancement by metal nanostructures which is sensitive to refractive index n of an ambient medium is suggested as an operation principle of a novel refractive index sensor for liquids. Calculations are made for spherical and spheroidal Ag particles, and potential feasibility of sensitivity of the order of Δn=10−4 is demonstrated. Sensors of this type can be made fully colloidal with metal bodies deposited on a substrate or comprising a metal layer covering colloidal assembly of dielectric particles to serve as a test strip as well as placed on a fiber tip end to get local probing of refractive index in the tip-enhanced refractometry mode. Colloidal core-shell semiconductor nanocrystals may become the best candidates for this type of sensors whereas molecular probes may be affected by chemical properties of tested liquids.

Keywords: colloidal nanostructures; fluorescence; plasmonics; refractive index; sensors

References

About the article

Received: 2018-01-28

Accepted: 2018-02-23

Published Online: 2018-03-14

Published in Print: 2018-08-28


Citation Information: Zeitschrift für Physikalische Chemie, Volume 232, Issue 9-11, Pages 1431–1441, ISSN (Online) 2196-7156, ISSN (Print) 0942-9352, DOI: https://doi.org/10.1515/zpch-2018-1127.

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[1]
Nadja C. Bigall and Nikolai Gaponik
Zeitschrift für Physikalische Chemie, 2018, Volume 232, Number 9-11, Page 1263

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