SURFACE PLASMON BIOSENSING WITH 3D PLASMONIC CRYSTALS

Julia Y. Lin; Jiun Chan Yang; Hanwei Gao; Teri W. Odom

doi:10.1142/9789814355285_0008

SURFACE PLASMON BIOSENSING WITH 3D PLASMONIC CRYSTALS

Julia Y. Lin, Jiun Chan Yang, Hanwei Gao, Teri W. Odom

Chemistry

Research output: Chapter in Book/Report/Conference proceeding › Chapter

Abstract

This chapter introduces a new type of engineered surface - plasmonic crystals with three-dimensional (3D) unit cells - for biosensing. Nanostructured metal films exhibit surface plasmon (SP) resonances with exceptional sensitivities but are limited to bulk refractive index (RI) sensing. Here we describe the biosensing capabilities of two different plasmonic crystal structures that support both surface plasmon polaritons (SPPs) and localized surface plasmons (LSPs): (i) a nano-pyramidal grating and (ii) a 3D nanohole array. These plasmonic crystals not only exhibit bulk RI sensitivities comparable to commercial SP sensors but also have surface sensitivities that can be tuned by manipulating the free-space light excitation angle θ. We show how tailoring the surface sensitivity of the plasmonic crystals optimizes real-time measurements of biomolecular interactions.

Original language	English (US)
Title of host publication	Plasmonics and Plasmonic Metamaterials
Subtitle of host publication	Analysis And Applications
Publisher	World Scientific Publishing Co.
Pages	231-253
Number of pages	23
Volume	4
ISBN (Electronic)	9789814355285
ISBN (Print)	9789814355278
DOIs	https://doi.org/10.1142/9789814355285_0008
State	Published - Jan 1 2011

ASJC Scopus subject areas

Biochemistry, Genetics and Molecular Biology(all)
Engineering(all)
Physics and Astronomy(all)

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10.1142/9789814355285_0008

Cite this

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abstract = "This chapter introduces a new type of engineered surface - plasmonic crystals with three-dimensional (3D) unit cells - for biosensing. Nanostructured metal films exhibit surface plasmon (SP) resonances with exceptional sensitivities but are limited to bulk refractive index (RI) sensing. Here we describe the biosensing capabilities of two different plasmonic crystal structures that support both surface plasmon polaritons (SPPs) and localized surface plasmons (LSPs): (i) a nano-pyramidal grating and (ii) a 3D nanohole array. These plasmonic crystals not only exhibit bulk RI sensitivities comparable to commercial SP sensors but also have surface sensitivities that can be tuned by manipulating the free-space light excitation angle θ. We show how tailoring the surface sensitivity of the plasmonic crystals optimizes real-time measurements of biomolecular interactions.",

author = "Lin, {Julia Y.} and Yang, {Jiun Chan} and Hanwei Gao and Odom, {Teri W.}",

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SURFACE PLASMON BIOSENSING WITH 3D PLASMONIC CRYSTALS

Abstract

ASJC Scopus subject areas

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