Electrochemical Crystallization of Plasmonic Nanostructures

We show how gold recrystallizes when under the influence of electrochemical potentials. This “cold annealing” occurs without charge transfer reactions and preserves nanoscale structural features. By performing the process on plasmonic nanostructures, grain growth is monitored noninvasively by optica...

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Vydáno v:	Nano letters Ročník 11; číslo 3; s. 1337 - 1343
Hlavní autoři:	Dahlin, Andreas B, Sannomiya, Takumi, Zahn, Raphael, Sotiriou, Georgios A, Vörös, Janos
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	Washington, DC American Chemical Society 09.03.2011
Témata:	Collective excitations (including excitons, polarons, plasmons and other charge-density excitations) Condensed matter: electronic structure, electrical, magnetic, and optical properties Condensed matter: structure, mechanical and thermal properties Cross-disciplinary physics: materials science; rheology Crystallization Electrochemistry - methods Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures Exact sciences and technology Low-dimensional structures (superlattices, quantum well structures, multilayers): structure, and nonelectronic properties Materials science Methods of nanofabrication Microscopy, Atomic Force Microscopy, Electron, Scanning Nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals Nanostructures Physics Structure of solids and liquids; crystallography Surface and interface electron states Surfaces and interfaces; thin films and whiskers (structure and nonelectronic properties) gold grain electrochemistry plasmon Crystal Gold Annealing Grain growth Crystallization Nanostructures Relaxation time Nanometer scale Calcium nitride Plasmons Resonance Charge transfer Nanomaterial synthesis Crystal structure
ISSN:	1530-6984, 1530-6992, 1530-6992
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Popis
Shrnutí:	We show how gold recrystallizes when under the influence of electrochemical potentials. This “cold annealing” occurs without charge transfer reactions and preserves nanoscale structural features. By performing the process on plasmonic nanostructures, grain growth is monitored noninvasively by optical spectroscopy. In this way, the influence from crystal structure on plasmon resonances can be investigated independently. Observed spectral changes are in excellent agreement with analytical models and changes in electron relaxation time and plasma frequency are calculated.
Bibliografie:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	1530-6984 1530-6992 1530-6992
DOI:	10.1021/nl104424q