Title

Polyelectrolyte Multilasyers Stabilized Plasmonic Nanosensors

Abstract

Metallic nanoparticle based surface plasmon resonance (LSPR) nanosensor can achieve high sensitivity in the detection of low-profile biomarkers. But such sensors usually require long annealing process to obtain reliable signals. In order to reduce annealing time, we have used polyelectrolyte multilayers to stabilize the structural changes of nanoparticles. The multilayers are deposited layer-by-layer onto an ordered array of silver nanoparticles made by nanosphere lithography. The multilayers stabilize the plasmon resonance peaks in air and in liquid, and the resonance peaks reliably shift towards long wavelength upon further attachments of polyelectrolyte film, exposures to chemical vapor. The optic transparency, easy deposition and quantitative response of polyelectrolyte multilayer modified plasmonic nanosensors can enhance the applicability of such sensors in chemical and biological sensing. ©2009 IEEE.

Publication Date

12-1-2009

Publication Title

Proceedings of IEEE Sensors

Number of Pages

338-342

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/ICSENS.2009.5398142

Socpus ID

77951125240 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/77951125240

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