Optical properties of strongly interacting supported silver nanocube monolayers

Daniel Prezgot; Anatoli Ianoul

doi:10.1117/12.2002568

21 February 2013 Optical properties of strongly interacting supported silver nanocube monolayers

Daniel Prezgot, Anatoli Ianoul

Proceedings Volume 8597, Plasmonics in Biology and Medicine X; 85970A (2013) https://doi.org/10.1117/12.2002568
Event: SPIE BiOS, 2013, San Francisco, California, United States

Abstract

Plasmonic properties of monolayers of strongly interacting silver nanocubes (AgNC) with controlled interparticle spacing are investigated. Uniform monolayers with controlled particle densities are made using the Langmuir-Blodgett technique with passive phospholipid spacers, such as dioleoyl phosphatidylcholine (DOPC). Both extinction intensity and wavelength of dipole-dipole coupling modes are tuned via particle spacing. The refractive indices of the substrates are used to tune dipolar and interparticle coupling modes via deposition onto thin films of silicon (0 - 25nm). By varying silicon film thickness it is possible to shift and control peak widths and position for both the dipole and interparticle dipole-dipole coupling modes. Control of plasmon shifts and interparticle spacing is applied towards the optimization of SERS substrates. SERS substrates using a Rhodamine B label are tuned at different excitation wavelengths which are in resonance with either the plasmon dipole, fluorescent dye, or interparticle coupling mode. Substrates display reproducible enhancement across multiple sites. This work presents methodology to design and optimize uniform silver nanocube SERS substrates through tuning of plasmon shifts and particle spacing.

Citation Download Citation

Daniel Prezgot and Anatoli Ianoul "Optical properties of strongly interacting supported silver nanocube monolayers", Proc. SPIE 8597, Plasmonics in Biology and Medicine X, 85970A (21 February 2013); https://doi.org/10.1117/12.2002568

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available