Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Plasmonic nanoparticle-functionalized exposed-core fiber—an optofluidic refractive index sensing platform

Not Accessible

Your library or personal account may give you access

Abstract

Here, we show that immobilizing ensembles of gold nanospheres within tailored areas on the open side of an exposed-core microstructured fiber yields a monolithic, highly sensitive plasmon-based refractive index sensor. The nanoparticle densities (average nanoparticle diameter: 45 nm) on the small-core fiber (core diameter: 2.5 μm) are controlled electrostatically, yielding densities of 4nanoparticles/μm2. Refractive index sensitivities of 200 nm/RIU for aqueous analytes at high fringe contrast levels (20dB) have been observed. Our concept presents an easy-to-use, efficient, and multiplex-compatible sensing platform for rapid small-volume detection with the capacity for integration into a bioanalytic, optofluidic, or microfluidic system.

© 2017 Optical Society of America

Full Article  |  PDF Article
More Like This
Nanoparticle functionalised small-core suspended-core fibre – a novel platform for efficient sensing

Brenda Doherty, Andrea Csáki, Matthias Thiele, Matthias Zeisberger, Anka Schwuchow, Jens Kobelke, Wolfgang Fritzsche, and Markus A. Schmidt
Biomed. Opt. Express 8(2) 790-799 (2017)

Plasmonic nanoshell functionalized etched fiber Bragg gratings for highly sensitive refractive index measurements

Jörg Burgmeier, Amin Feizpour, Wolfgang Schade, and Björn M. Reinhard
Opt. Lett. 40(4) 546-549 (2015)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (3)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved