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Ko, Hyunhyub
Functional Nanomaterials & Devices Lab
Research Interests
  • Functional nanomaterials, flexible electronics, electronic skins, wearable sensors

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Raman Markers from Silver Nanowire Crossbars

Cited 19 times inthomson ciCited 17 times inthomson ci
Title
Raman Markers from Silver Nanowire Crossbars
Author
Chang, SehoonKo, HyunhyubGunawidjaja, RayTsukruk, Vladimir V.
Keywords
Biological detection; Double-step; Microprinting; Nano-structured; Nanojunctions; Nanowire junctions; Plasmon resonances; Polarization planes; Raman markers; Silver nanoparticles; Silver nanowires; Surface-enhanced Raman scattering
Issue Date
201103
Publisher
AMER CHEMICAL SOC
Citation
JOURNAL OF PHYSICAL CHEMISTRY C, v.115, no.11, pp.4387 - 4394
Abstract
We fabricated silver nanowire crossbars partially decorated with silver nanoparticles via a double-step transversal capillary transfer microprinting approach and demonstrated their polarization-dependent surface-enhanced Raman scattering (SERS) properties. We demonstrated that SERS intensity of nanowire junctions and nanowire nanoparticle junctions can be turned on/off on demand by the rotation of the polarization plane, which excites specific transversal plasmon resonances and initiates selective excitation/suppression of central and auxiliary nanostructured junctions. We suggest that massive fabrication of such addressable crossbar nanojunctions is important for exploiting these SERS markers for chemical and biological detection assays.
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DOI
http://dx.doi.org/10.1021/jp109348b
ISSN
1932-7447
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