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

Differential phase-detecting localized surface plasmon resonance sensor with self-assembly gold nano-islands

Not Accessible

Your library or personal account may give you access

Abstract

Self-assembly (SAM) gold nano-islands are fabricated by two-step thin-film deposition-annealing method. Despite random distribution of the SAM, the p-polarized light after total internal reflection shows significant phase transition at the extinction wavelengths upon refractive index variation due to localized surface plasmon resonance (LSPR) effect. It resembles the sharp phase transition observed in conventional surface plasmon resonance (SPR) biosensors, so that the bulk sensitivity of the SAM-LSPR sensor is improved via the phase interrogation method. In this Letter, we present both computational and experimental investigations to the SAM-LSPR sensor and the results show excellent agreement with each other. With bulk refractive index resolution to 9.75×108RIU, we believe the phase-detecting SAM-LSPR sensor would be an essential step toward low-cost label-free sensing applications.

© 2015 Optical Society of America

Full Article  |  PDF Article
More Like This
Surface plasmon resonance gas sensor with a nanoporous gold film

Chenglong Zhang, Ziwei Liu, Chen Cai, Zehao Yang, and Zhi-Mei Qi
Opt. Lett. 47(16) 4155-4158 (2022)

Study of optical phase transduction on localized surface plasmon resonance for ultrasensitive detection

Chung-Tien Li, How-foo Chen, Ieng-Wai Un, Hsin-Cheng Lee, and Ta-Jen Yen
Opt. Express 20(3) 3250-3260 (2012)

Demonstration of an ultrasensitive refractive-index plasmonic sensor by enabling its quadrupole resonance in phase interrogation

Hsin-Cheng Lee, Chung-Tien Li, How-Foo Chen, and Ta-Jen Yen
Opt. Lett. 40(22) 5152-5155 (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 (4)

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

Equations (2)

You do not have subscription access to this journal. Equations 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