Optical properties of dense self-assembled gold nanoparticle layers with organic linker molecules

Stefan Schelm; Geoff B. Smith; Gang Wei; Andrew Vella; Lech Wieczorek; Karl-H. Mueller; Burkhard Raguse

doi:10.1117/12.505603

28 October 2003 Optical properties of dense self-assembled gold nanoparticle layers with organic linker molecules

Stefan Schelm, Geoff B. Smith, Gang Wei, Andrew Vella, Lech Wieczorek, Karl-H. Mueller, Burkhard Raguse

Proceedings Volume 5221, Plasmonics: Metallic Nanostructures and Their Optical Properties; (2003) https://doi.org/10.1117/12.505603
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

Abstract

Films consisting of self-assembled gold nanoparticles cross-linked with alkane-dithiols were prepared by a filtration method and studied with scanning electron microscopy to determine the structure of the films and spectrophotometry and ellipsometry to ascertain their optical properties. The structural characterization showed the existence of nanometer sized voids within the films. This previously unmentioned feature is responsible for the previous difficulties in modelling the optical properties with effective medium models.This can be remedied, using a two-tiered hierarchical effective medium model, which takes into account the existence of the voids. Using this model we were able to fit the experimental data,with only the void volume fraction to be determined by the overall fit, while the gold volume fraction in the linker medium is fixed by the wavelength of the resonance peak. Our model should be applicable to all such films, when the deposition method, which determines the microstructure, is properly taken into account.

Citation Download Citation

Stefan Schelm, Geoff B. Smith, Gang Wei, Andrew Vella, Lech Wieczorek, Karl-H. Mueller, and Burkhard Raguse "Optical properties of dense self-assembled gold nanoparticle layers with organic linker molecules", Proc. SPIE 5221, Plasmonics: Metallic Nanostructures and Their Optical Properties, (28 October 2003); https://doi.org/10.1117/12.505603

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