Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > Press > Nano-FTIR - A new era in modern analytical chemistry

Abstract:
Researchers from the nanoscience research center NanoGUNE (San Sebastian, Spain), the university of Munich (LMU, Germany) and Neaspec GmbH (Martinsried, Germany) present a new instrumental development that solves a prime question of materials science and nanotechnology: how to chemically identify materials at the nanometer scale (F. Huth et al., Nano Letters, 2012, DOI: 10.1021/nl301159v).

Nano-FTIR - A new era in modern analytical chemistry

San Sebastian, Spain | Posted on July 27th, 2012

An ultimate goal in modern chemistry and materials science is the non-invasive chemical mapping of materials with nanometer scale resolution. A variety of high-resolution imaging techniques exist (e.g. electron microscopy or scanning probe microscopy), however, their chemical sensitivity cannot meet the demands of modern chemical nano-analytics. Optical spectroscopy, on the other hand, offers high chemical sensitivity but its resolution is limited by diffraction to about half the wavelength, thus preventing nanoscale resolved chemical mapping.

Nanoscale chemical identification and mapping of materials now becomes possible with nano-FTIR, an optical technique that combines scattering-type scanning near-field optical microscopy (s-SNOM) and Fourier transform infrared (FTIR) spectroscopy. By illuminating the metalized tip of an atomic force microscope (AFM) with a broadband infrared laser, and analyzing the backscattered light with a specially designed Fourier Transform spectrometer, the researchers could demonstrate local infrared spectroscopy with a spatial resolution of less than 20 nm. "Nano-FTIR thus allows for fast and reliable chemical identification of virtually any infrared-active material on the nanometer scale", says Florian Huth, who performed the experiments.

An important aspect of enormous practical relevance is that the nano-FTIR spectra match extremely well with conventional FTIR spectra, while the spatial resolution is increased by more than a factor of 300 compared to conventional infrared spectroscopy. "The high sensitivity to chemical composition combined with ultra-high resolution makes nano-FTIR a unique tool for research, development and quality control in polymer chemistry, biomedicine and pharmaceutical industry" concludes Rainer Hillenbrand, leader of the Nanooptics group at nanoGUNE.

For example, nano-FTIR can be applied for the chemical identification of nanoscale sample contaminations. Fig. 1 shows AFM images of a PMMA film on a Si surface. While the AFM phase contrast indicates the presence of a 100 nm size contamination, the determination of its chemical identity remains elusive from these images. Using nano-FTIR to record a local infrared spectrum in the center of the particle and comparing it with standard FTIR database spectra, the contamination can be identified as a PDMS particle.

####

For more information, please click here

Contacts:
Rainer Hillenbrand


Enrique Zarate
CIC nanoGUNE
Contact details:

(+34) 943574024

Copyright © Elhuyar Fundazioa

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 News Press

News and information

Scientists synthesize nanoparticle-antioxidants to treat strokes and spinal cord injuries January 16th, 2018

New catalyst for hydrogen production is a step toward clean fuel: Carbon-based nanocomposite with embedded metal ions yields impressive performance as catalyst for electrolysis of water to generate hydrogen January 16th, 2018

'Gyroscope' molecules form crystal that's both solid and full of motion: New type of molecular machine designed by UCLA researchers could have wide-ranging applications in technology and science January 16th, 2018

The nanoscopic structure that locks up our genes January 16th, 2018

New exotic phenomena seen in photonic crystals: Researchers observe, for the first time, topological effects unique to an “open” system January 12th, 2018

Chemistry

'Gyroscope' molecules form crystal that's both solid and full of motion: New type of molecular machine designed by UCLA researchers could have wide-ranging applications in technology and science January 16th, 2018

Imaging

The nanoscopic structure that locks up our genes January 16th, 2018

Silver nanoparticles take spectroscopy to new dimension: A new way of organizing nanostructures has boosted Raman signals by a hundred thousand times to better identify and characterize different molecules January 2nd, 2018

Discoveries

Scientists synthesize nanoparticle-antioxidants to treat strokes and spinal cord injuries January 16th, 2018

New catalyst for hydrogen production is a step toward clean fuel: Carbon-based nanocomposite with embedded metal ions yields impressive performance as catalyst for electrolysis of water to generate hydrogen January 16th, 2018

'Gyroscope' molecules form crystal that's both solid and full of motion: New type of molecular machine designed by UCLA researchers could have wide-ranging applications in technology and science January 16th, 2018

The nanoscopic structure that locks up our genes January 16th, 2018

Announcements

Scientists synthesize nanoparticle-antioxidants to treat strokes and spinal cord injuries January 16th, 2018

New catalyst for hydrogen production is a step toward clean fuel: Carbon-based nanocomposite with embedded metal ions yields impressive performance as catalyst for electrolysis of water to generate hydrogen January 16th, 2018

'Gyroscope' molecules form crystal that's both solid and full of motion: New type of molecular machine designed by UCLA researchers could have wide-ranging applications in technology and science January 16th, 2018

The nanoscopic structure that locks up our genes January 16th, 2018

Tools

The nanoscopic structure that locks up our genes January 16th, 2018

New era in high field superconducting magnets – opening new frontiers in science, nanotechnology and materials discovery January 9th, 2018

Silver nanoparticles take spectroscopy to new dimension: A new way of organizing nanostructures has boosted Raman signals by a hundred thousand times to better identify and characterize different molecules January 2nd, 2018

Viewing atomic structures of dopant atoms in 3-D relating to electrical activity in a semiconductor December 28th, 2017

Research partnerships

New catalyst for hydrogen production is a step toward clean fuel: Carbon-based nanocomposite with embedded metal ions yields impressive performance as catalyst for electrolysis of water to generate hydrogen January 16th, 2018

New era in high field superconducting magnets – opening new frontiers in science, nanotechnology and materials discovery January 9th, 2018

Touchy nanotubes work better when clean: Rice, Swansea scientists show that decontaminating nanotubes can simplify nanoscale devices January 4th, 2018

Study resolves controversy about electron structure of defects in graphene December 21st, 2017

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