High sensitivity photonic crystal biosensor incorporating nanorod structures for enhanced surface area

Wei Zhang; Nikhil Ganesh; Ian D. Block; Brian T. Cunningham

doi:10.1016/j.snb.2007.11.017

High sensitivity photonic crystal biosensor incorporating nanorod structures for enhanced surface area

Wei Zhang, Nikhil Ganesh, Ian D. Block, Brian T. Cunningham

Research output: Contribution to journal › Article › peer-review

Abstract

The surface area of a photonic crystal biosensor is greatly enhanced through the incorporation of a porous TiO₂ film possessing the structure of nanorods into the device. The film is deposited by the glancing angle deposition technique in an e-beam evaporation system. The sensitivity of high surface area sensors is compared with sensors without the high surface area coating. Results for detection of polymer films, large proteins and small molecules indicate up to a four-fold enhancement of detected adsorbed mass density.

Original language	English (US)
Pages (from-to)	279-284
Number of pages	6
Journal	Sensors and Actuators, B: Chemical
Volume	131
Issue number	1
DOIs	https://doi.org/10.1016/j.snb.2007.11.017
State	Published - Apr 14 2008

Keywords

Biosensor
Glancing angle deposition
Nanostructure
Photonic crystal
Sensitivity
Surface area

ASJC Scopus subject areas

Analytical Chemistry
Electrochemistry
Electrical and Electronic Engineering

Online availability

10.1016/j.snb.2007.11.017

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title = "High sensitivity photonic crystal biosensor incorporating nanorod structures for enhanced surface area",

abstract = "The surface area of a photonic crystal biosensor is greatly enhanced through the incorporation of a porous TiO2 film possessing the structure of nanorods into the device. The film is deposited by the glancing angle deposition technique in an e-beam evaporation system. The sensitivity of high surface area sensors is compared with sensors without the high surface area coating. Results for detection of polymer films, large proteins and small molecules indicate up to a four-fold enhancement of detected adsorbed mass density.",

keywords = "Biosensor, Glancing angle deposition, Nanostructure, Photonic crystal, Sensitivity, Surface area",

author = "Wei Zhang and Nikhil Ganesh and Block, {Ian D.} and Cunningham, {Brian T.}",

note = "Funding Information: This work was supported by the National Science Foundation under Grant No. 0427657. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation. The authors gratefully acknowledge SRU Biosystems for providing financial support for this work. The authors also extend their gratitude to the support staff of the Micro and Nanotechnology Laboratory at the University of Illinois at Urbana-Champaign. ",

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doi = "10.1016/j.snb.2007.11.017",

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AU - Zhang, Wei

AU - Ganesh, Nikhil

AU - Block, Ian D.

AU - Cunningham, Brian T.

N1 - Funding Information: This work was supported by the National Science Foundation under Grant No. 0427657. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation. The authors gratefully acknowledge SRU Biosystems for providing financial support for this work. The authors also extend their gratitude to the support staff of the Micro and Nanotechnology Laboratory at the University of Illinois at Urbana-Champaign.

PY - 2008/4/14

Y1 - 2008/4/14

N2 - The surface area of a photonic crystal biosensor is greatly enhanced through the incorporation of a porous TiO2 film possessing the structure of nanorods into the device. The film is deposited by the glancing angle deposition technique in an e-beam evaporation system. The sensitivity of high surface area sensors is compared with sensors without the high surface area coating. Results for detection of polymer films, large proteins and small molecules indicate up to a four-fold enhancement of detected adsorbed mass density.

AB - The surface area of a photonic crystal biosensor is greatly enhanced through the incorporation of a porous TiO2 film possessing the structure of nanorods into the device. The film is deposited by the glancing angle deposition technique in an e-beam evaporation system. The sensitivity of high surface area sensors is compared with sensors without the high surface area coating. Results for detection of polymer films, large proteins and small molecules indicate up to a four-fold enhancement of detected adsorbed mass density.

KW - Biosensor

KW - Glancing angle deposition

KW - Nanostructure

KW - Photonic crystal

KW - Sensitivity

KW - Surface area

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High sensitivity photonic crystal biosensor incorporating nanorod structures for enhanced surface area

Abstract

Keywords

ASJC Scopus subject areas

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