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. |
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, 2012Now, 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:
| 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
Researchers develop molecular qubits that communicate at telecom frequencies October 3rd, 2025
Next-generation quantum communication October 3rd, 2025
"Nanoreactor" cage uses visible light for catalytic and ultra-selective cross-cycloadditions October 3rd, 2025
Imaging
ICFO researchers overcome long-standing bottleneck in single photon detection with twisted 2D materials August 8th, 2025
Simple algorithm paired with standard imaging tool could predict failure in lithium metal batteries August 8th, 2025
First real-time observation of two-dimensional melting process: Researchers at Mainz University unveil new insights into magnetic vortex structures August 8th, 2025
New imaging approach transforms study of bacterial biofilms August 8th, 2025
Discoveries
Researchers develop molecular qubits that communicate at telecom frequencies October 3rd, 2025
Next-generation quantum communication October 3rd, 2025
"Nanoreactor" cage uses visible light for catalytic and ultra-selective cross-cycloadditions October 3rd, 2025
Announcements
Rice membrane extracts lithium from brines with greater speed, less waste October 3rd, 2025
Researchers develop molecular qubits that communicate at telecom frequencies October 3rd, 2025
Next-generation quantum communication October 3rd, 2025
"Nanoreactor" cage uses visible light for catalytic and ultra-selective cross-cycloadditions October 3rd, 2025
Tools
Japan launches fully domestically produced quantum computer: Expo visitors to experience quantum computing firsthand August 8th, 2025
Rice researchers harness gravity to create low-cost device for rapid cell analysis February 28th, 2025
Photonics/Optics/Lasers
ICFO researchers overcome long-standing bottleneck in single photon detection with twisted 2D materials August 8th, 2025
Institute for Nanoscience hosts annual proposal planning meeting May 16th, 2025
 |
||
 |
||
| The latest news from around the world, FREE | ||
 |
||
|
|
||
| Premium Products | ||
 |
||
|
Only the news you want to read!
Learn More |
||
 |
||
|
Full-service, expert consulting
Learn More |
||
|
|
||