Nanotechnology Now





Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Anasys reports on University of Illinois study of near-field behavior of semiconductor plasmonic microparticles using AFM-IR published in APL

An atomic force microscope image of plasmonic semiconductor microparticles
An atomic force microscope image of plasmonic semiconductor microparticles

Abstract:
Anasys Instruments reports on the announcement from the University of Illinois which describes the effect of nanometer-scale heating on semiconductor plasmonic microparticles which reveal surface plasmon resonance. The work is described in a paper published in Applied Physics Letters.

Anasys reports on University of Illinois study of near-field behavior of semiconductor plasmonic microparticles using AFM-IR published in APL

Santa Barbara, CA | Posted on May 14th, 2013

Recent progress in the engineering of plasmonic structures has enabled new kinds of nanometer-scale optoelectronic devices as well as high-resolution optical sensing. But until now, there has been a lack of tools for measuring nanometer-scale behavior in plasmonic structures which are needed to understand device performance and to confirm theoretical models.

"For the first time, we have measured nanometer-scale infrared absorption in semiconductor plasmonic microparticles using a technique that combines atomic force microscopy with infrared spectroscopy," explained William P King, an Abel Bliss Professor in the Department of Mechanical Science and Engineering (MechSE) at Illinois. "Atomic force microscope infrared spectroscopy (AFM-IR*) allows us to directly observe the plasmonic behavior within microparticle infrared antennas."

The article describing the research, "Near-field infrared absorption of plasmonic semiconductor microparticles studied using atomic force microscope infrared spectroscopy," appears in Applied Physics Letters.

"Highly doped semiconductors can serve as wavelength flexible plasmonic metals in the infrared," noted Daniel M Wasserman, assistant professor of electrical and computer engineering at Illinois. "However, without the ability to visualize the optical response in the vicinity of the plasmonic particles, we can only infer the near-field behavior of the structures from their far-field response. What this work gives us is a clear window into the optical behavior of this new class of materials on a length scale much smaller than the wavelength of light."

The article compares near-field and far-field measurements with electromagnetic simulations to confirm the presence of localized plasmonic resonance. The article further reports high resolution maps of the spatial distribution of absorption within single plasmonic structures and variation across plasmonic arrays.

"The ability to measure near field behavior in plasmonic structures allows us to begin expanding our design parameters for plasmonic materials," commented Jonathan Felts, a MechSE graduate student. "Now that we can measure the optical behavior of individual features, we can start to think about designing and testing more complex optical materials."

The authors on the research are Jonathan Felts, Stephanie Law, Daniel M Wasserman, and William P King of the University of Illinois at Urbana-Champaign, along with Christopher M Roberts and Viktor Podolskiy of the University of Massachusetts. The article is available online. This research was supported by the National Science Foundation.

*AFM-IR is a product from Anasys Instruments, Inc. For more information on AFM-IR and its applications, please visit the Anasys web site: www.anasysinstruments.com.

####

About Anasys Instruments
Anasys Instruments is dedicated to delivering innovative products that measure material properties for samples with spatially varying physical and chemical properties at the nanoscale. Anasys introduced the nano-TA in 2006 which pioneered the field of nanoscale thermal property measurement. In 2010, Anasys introduced the award-winning breakthrough nanoIR™ Platform which pioneered the field of nanoscale IR measurement. Most recently, Anasys is proud to introduce the breakthrough Lorentz Force Contact Resonance, which pioneers the field of wideband nanomechanical spectroscopy.

For more information, please click here

Contacts:
Anasys contact:
Roshan Shetty
Anasys Instruments Corporation
121 Gray Avenue, Suite 100
Santa Barbara
CA 93101 USA
Tel: +1 (805) 730-3310
www.anasysinstruments.com


Media contact:
Jezz Leckenby
Talking Science Limited
39 de Bohun Court
Saffron Walden
Essex CB10 2BA, UK
Tel +44 (0) 1799 521881
Mob +44 (0) 7843 012997
www.talking-science.com

Copyright © Anasys Instruments

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

Download article:

Related News Press

News and information

Discovery of nanotubes offers new clues about cell-to-cell communication July 2nd, 2015

Nanospiked bacteria are the brightest hard X-ray emitters July 2nd, 2015

Engineering the world’s smallest nanocrystal July 2nd, 2015

Producing spin-entangled electrons July 2nd, 2015

Imaging

NIST ‘How-To’ Website Documents Procedures for Nano-EHS Research and Testing July 1st, 2015

Ultra-stable JILA microscopy technique tracks tiny objects for hours July 1st, 2015

Bruker Introduces Second-Generation Inspire Nanochemical Imaging Solution: Featuring Unique PeakForce IR and IR EasyAlign Technology July 1st, 2015

Carnegie Mellon chemists characterize 3-D macroporous hydrogels: Methods will allow researchers to develop new 'smart' materials June 30th, 2015

Academic/Education

Oxford Instruments’ TritonXL Cryofree dilution refrigerator selected for the Oxford NQIT Quantum Technology Hub project June 30th, 2015

Rice University boots up powerful microscopes: New electron microscopes will capture images at subnanometer resolution June 29th, 2015

Six top Catalan research centres constitute ‘The Barcelona Institute of Science and Technology’ to pursue a joint scientific endeavour June 27th, 2015

Lancaster University revolutionary quantum technology research receives funding boost June 22nd, 2015

Announcements

Nanospiked bacteria are the brightest hard X-ray emitters July 2nd, 2015

Engineering the world’s smallest nanocrystal July 2nd, 2015

Producing spin-entangled electrons July 2nd, 2015

NIST Group Maps Distribution of Carbon Nanotubes in Composite Materials July 2nd, 2015

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers

New micro-supercapacitor structure inspired by the intricate design of leaves: A team of scientists in Korea has devised a new method for making a graphene film for supercapacitors July 2nd, 2015

The quantum middle man July 2nd, 2015

Freezing single atoms to absolute zero with microwaves brings quantum technology closer: Atoms frozen to absolute zero using microwaves July 2nd, 2015

New technology using silver may hold key to electronics advances July 2nd, 2015

Tools

Nanometrics to Announce Second Quarter Financial Results on July 23, 2015 July 2nd, 2015

NIST ‘How-To’ Website Documents Procedures for Nano-EHS Research and Testing July 1st, 2015

Ultra-stable JILA microscopy technique tracks tiny objects for hours July 1st, 2015

Bruker Introduces Second-Generation Inspire Nanochemical Imaging Solution: Featuring Unique PeakForce IR and IR EasyAlign Technology July 1st, 2015

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