Early work with size-tunable periodic particle arrays (PPAs) fabricated by nanosphere lithography (NSL) demonstrated that the localized surface plasmon resonance (LSPR) could be tuned throughout the visible region of the spectrum. The LSPR is sensitive to changes in nanoparticle aspect ratio and local dielectric environment. This property has recently been exploited to develop a novel method of measuring surface-enhanced Raman scattering (SERS) excitation profiles. Single layer PPAs consist of size-tunable anisotropic nanoparticles that can be modified to exhibit anisotropic surface chemistry. This work demonstrates multiple schemes for PPA modification using self-assembled monolayers and colloid decoration. Nanoparticle anisotropy can be timber exploited with the recent combination of NSL and reactive ion etching (RIE); this extends the two-dimensional PPA structure into the third dimension.
|Original language||English (US)|
|Journal||Materials Research Society Symposium - Proceedings|
|State||Published - 2001|
|Event||Anisotropic Nanoparticles-Synthesis, Characterization and Applications - Boston, MA, United States|
Duration: Nov 27 2000 → Nov 29 2000
Bibliographical noteFunding Information:
The authors would like to acknowledge Michelle Duval Malinsky for her work on the nanoparticle templating project and Dr. John Ketterson for the use of the RIE chamber and helpful discussions. This research was supported by the MURI ARO (Grant DAAG55-97-1-0133), NSF (Grant CHE-940078), and MRSEC program of the NSF (Grant DMR-0076097).