Abstract

We report a new approach to characterization of thin (bio)molecular films based on spectroscopy of Bragg-scattered surface plasmons (BSSPs) generated by diffraction-coupling of counterpropagating surface plasmons on a metal-coated diffraction grating. The BSSPs exhibit fields with different penetration depths into the medium adjacent to the metal and therefore exhibit unequal sensitivities to the presence of (bio)molecular films on the surface of the metal. Therefore, spectroscopy of BSSPs enables in situ observation of the formation of biomolecular films and determination of both their refractive index and thickness. We demonstrate this capacity of spectroscopy of BSSPs in a model experiment in which growth of protein layers on a gold surface is studied.

© 2007 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Surface plasmon-coupled emission on plasmonic Bragg gratings

Mana Toma, Koji Toma, Pavel Adam, Jiří Homola, Wolfgang Knoll, and Jakub Dostálek
Opt. Express 20(13) 14042-14053 (2012)

Ellipsometry study on gold-nanoparticle-coated gold thin film for biosensing application

Rakesh Singh Moirangthem, Yia-Chung Chang, and Pei-Kuen Wei
Biomed. Opt. Express 2(9) 2569-2576 (2011)

Thin-film-based field penetration engineering for surface plasmon resonance biosensing

Soon Joon Yoon and Donghyun Kim
J. Opt. Soc. Am. A 24(9) 2543-2549 (2007)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

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

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 OSA member, or as an authorized user of your institution.

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

Figures (5)

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

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

Equations (1)

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

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

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

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