Nanotechnology Now

Our NanoNews Digest Sponsors


Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Plasmon Bands in Gold-Silver Nanorods

Researchers from The Chinese University of Hong Kong have shown that there are four plasmon bands in (Au core)−(Ag shell) nanorods.
Researchers from The Chinese University of Hong Kong have shown that there are four plasmon bands in (Au core)−(Ag shell) nanorods.

Abstract:
Localized surface plasmon resonances have recently received intense attention due to their intriguing and complex optical properties. Gold and silver nanostructures, which produce resonances located in the visible range and are stable under ambient conditions, have been studied extensively from fundamental sciences aspects as well as due to their numerous potential applications. Both materials have their advantages. Silver nanocrystals exhibit larger field enhancements, higher refractive index sensitivities, and larger solar energy conversion efficiencies than gold nanocrystals. However, gold nanostructures show tunable longitudinal plasmon wavelengths, are chemically stable and facile growth methods exist. (Gold core) − (silver shell) nanostructures with different shapes have been fabricated to combine these advantages and to allow for tailoring of the plasmon wavelengths by varying the thickness. However, the exact nature of the plasmonic properties of these structures has not been investigated systematically and still remains controversial.

Plasmon Bands in Gold-Silver Nanorods

Germany | Posted on September 20th, 2012

Now, Jianfang Wang and co-workers from The Chinese University of Hong Kong have for the first time unraveled the nature of the plasmon bands on gold-silver nanorods. They started with two differently sized gold nanorods and coated them with silver shells with systematically varied thicknesses. The evolution of the plasmon bands, their peak wavelengths and extinction intensities as functions of the shell thickness were studied. The nature of each plasmon band was determined unambiguously with finite-difference time-domain (FDTD) simulations. This first systematical study on the plasmon resonances of gold-silver nanorods will be useful for the construction of optical devices as well as for plasmon-enhanced spectroscopy techniques.

The research was reported in Advanced Optical Materials, a new section in Advanced Materials dedicated to breakthrough discoveries and fundamental research in photonics, plasmonics, metamaterials, and more, covering all aspects of light-matter interactions.

####

For more information, please click here

Copyright © Wiley-VCH Materials Science Journals

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related Links

Link to the original paper on Wiley Online Library:

To get Advanced Optical Materials email alerts click here:

Related News Press

News and information

Cooling graphene-based film close to pilot-scale production April 30th, 2016

Personal cooling units on the horizon April 29th, 2016

Exploring phosphorene, a promising new material April 29th, 2016

The Translational Research Center at the University Hospital of Erlangen in Germany uses the ZetaView from Particle Metrix to quantify extracellular vesicles such as exosomes April 28th, 2016

JPK reports on the use of a NanoWizard AFM system at the University of Kaiserslautern to study the interaction of bacteria with microstructured surfaces April 28th, 2016

Imaging

The Translational Research Center at the University Hospital of Erlangen in Germany uses the ZetaView from Particle Metrix to quantify extracellular vesicles such as exosomes April 28th, 2016

JPK reports on the use of a NanoWizard AFM system at the University of Kaiserslautern to study the interaction of bacteria with microstructured surfaces April 28th, 2016

Bruker Introduces First of Its Kind Dimensional Analysis System: The Novel Contour CMM™ System Fully Integrates 3D Coordinate Measurements with Nanoscale Surface Height, Texture, Waviness and Form Characterization April 26th, 2016

Discoveries

Cooling graphene-based film close to pilot-scale production April 30th, 2016

Personal cooling units on the horizon April 29th, 2016

Exploring phosphorene, a promising new material April 29th, 2016

Superfast light source made from artificial atom April 28th, 2016

Announcements

Cooling graphene-based film close to pilot-scale production April 30th, 2016

Personal cooling units on the horizon April 29th, 2016

Exploring phosphorene, a promising new material April 29th, 2016

The Translational Research Center at the University Hospital of Erlangen in Germany uses the ZetaView from Particle Metrix to quantify extracellular vesicles such as exosomes April 28th, 2016

Tools

Exploring phosphorene, a promising new material April 29th, 2016

JPK reports on the use of a NanoWizard AFM system at the University of Kaiserslautern to study the interaction of bacteria with microstructured surfaces April 28th, 2016

Chemists use DNA to build the world's tiniest thermometer April 27th, 2016

Bruker Introduces Dimension FastScan Pro Industrial AFM: Providing Nanometer-Resolution at High Scan Rates for up to 300-mm Samples April 26th, 2016

Photonics/Optics/Lasers

Exploring phosphorene, a promising new material April 29th, 2016

Researchers create a first frequency comb of time-bin entangled qubits: Discovery is a significant step toward multi-channel quantum communication and higher capacity quantum computers April 28th, 2016

Hybrid nanoantennas -- next-generation platform for ultradense data recording April 28th, 2016

NREL theory establishes a path to high-performance 2-D semiconductor devices April 27th, 2016

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project







Car Brands
Buy website traffic