Nanosphere lithography: Synthesis and application of nanoparticles with inherently anisotropic structures and surface chemistry

C. L. Haynes, A. J. Haes, R. P. Van Duyne

Research output: Contribution to journalConference articlepeer-review

13 Scopus citations

Abstract

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 languageEnglish (US)
Pages (from-to)C631-C636
JournalMaterials Research Society Symposium - Proceedings
Volume635
DOIs
StatePublished - 2001
Externally publishedYes
EventAnisotropic Nanoparticles-Synthesis, Characterization and Applications - Boston, MA, United States
Duration: Nov 27 2000Nov 29 2000

Bibliographical note

Funding 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).

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