Arrangement and SERS Applications of Nanoparticle Clusters Using Liquid Crystalline Template

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Manipulation of nanomaterials such as nanoparticles (NPs) and nanorods (NRs) to make clusters is of significant interest in material science and nanotechnology due to the unusual collective opto-electric properties in such structures that cannot be found in the individual NPs. This work demonstrates an effective way to arrange NP clusters (NPCs) to make the desired arrays based on removable and NP-guidable liquid crystalline template using sublimation and reconstruction phenomenon. The position of the NPCs is precisely controlled by the defect structure of the liquid crystal (LC), namely toric focal conic domains (TFCDs), during thermal annealing to construct the LC and corresponding NPC structures. As a proof of concept, the surface-enhanced Raman scattering (SERS) activity of a fabricated array of gold nanorod (GNR) clusters is measured and shown to have highly sensitive detection characteristics essential for potential sensing applications.
Publisher
AMER CHEMICAL SOC
Issue Date
2017-03
Language
English
Article Type
Article
Keywords

GOLD NANOROD ARRAYS; SUPERLATTICES; SUBLIMATION; FABRICATION; SURFACES; DEFECTS; DOMAINS; FILMS

Citation

ACS APPLIED MATERIALS & INTERFACES, v.9, no.8, pp.7787 - 7792

ISSN
1944-8244
DOI
10.1021/acsami.6b15343
URI
http://hdl.handle.net/10203/223506
Appears in Collection
NT-Journal Papers(저널논문)
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