Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

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

Imaging

Novel nanoparticle-based approach detects and treats oral plaque without drugs August 17th, 2018

News and information

Novel nanoparticle-based approach detects and treats oral plaque without drugs August 17th, 2018

UVA multidisciplinary engineering team designs technology for smart materials: The invention could lead to devices and manufactured goods, such as fabrics, that can dynamically regulate between thermally insulating and cooling August 17th, 2018

Smallest transistor worldwide switches current with a single atom in solid electrolyte: Milestone of energy efficiency in information technology -- Publication in Advanced Materials August 17th, 2018

Scientists turn to the quantum realm to improve energy transportation August 17th, 2018

Discoveries

Novel nanoparticle-based approach detects and treats oral plaque without drugs August 17th, 2018

UVA multidisciplinary engineering team designs technology for smart materials: The invention could lead to devices and manufactured goods, such as fabrics, that can dynamically regulate between thermally insulating and cooling August 17th, 2018

Smallest transistor worldwide switches current with a single atom in solid electrolyte: Milestone of energy efficiency in information technology -- Publication in Advanced Materials August 17th, 2018

Scientists turn to the quantum realm to improve energy transportation August 17th, 2018

Announcements

Novel nanoparticle-based approach detects and treats oral plaque without drugs August 17th, 2018

UVA multidisciplinary engineering team designs technology for smart materials: The invention could lead to devices and manufactured goods, such as fabrics, that can dynamically regulate between thermally insulating and cooling August 17th, 2018

Smallest transistor worldwide switches current with a single atom in solid electrolyte: Milestone of energy efficiency in information technology -- Publication in Advanced Materials August 17th, 2018

Scientists turn to the quantum realm to improve energy transportation August 17th, 2018

Tools

Novel nanoparticle-based approach detects and treats oral plaque without drugs August 17th, 2018

Nanometrics Delivers 100th: Atlas III System for Advanced Process Control Metrology Atlas III: Systems are qualified and in production for advanced devices in DRAM, 3D-NAND and Foundry/Logic August 2nd, 2018

Picosunís ALD solutions make quality watches tick July 26th, 2018

Nanometrics Announces Participation in Upcoming Investor Conferences July 25th, 2018

Photonics/Optics/Lasers

Scientists create antilaser for ultracold atoms condensate August 16th, 2018

Breaking down the Wiedemann-Franz law: In a study exploring the coupling between heat and particle currents in a gas of strongly interacting atoms, physicists at ETH Zurich find puzzling behaviours August 10th, 2018

Optical fibers that can 'feel' the materials around them August 7th, 2018

NUST MISIS scientists present metamaterial for solar cells and nanooptics July 23rd, 2018

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



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project