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Imaging ATR Accessory

Photonics.com
Oct 2011

 
MADISON, Wis., Oct. 6, 2011 — For fast and reliable Fourier transform infrared (FTIR) chemical imaging analyses, Thermo Fisher Scientific Inc. has released an imaging attenuated total reflectance (ATR) accessory with enhanced spatial resolution and high-speed data acquisition capabilities.

It is designed to seamlessly integrate with the company’s range of FTIR microscopes to enable efficient, fast and reliable chemical imaging of challenging samples. This is of particular benefit to manufacturers of composite structures, paper products, pharmaceutical dosage forms, biological tissues, polymer films and coatings.

ATR is a sampling technique for infrared spectroscopy that allows direct contact sampling of solids and liquids without further preparation. When coupled with an FTIR microscope, ATR provides the ability to explore the microscopic structure of heterogeneous samples. Single-point ATR mapping, although more flexible in terms of total image size and dimensions, requires many separate contact points to build up the imaging data set. The new accessory provides a more rapid method because it requires the sample to be compressed only once against an extended area of contact. Data collection may then proceed at the same speed as normal transmission or external reflectance experiments.

The accessory simplifies the task of obtaining high-quality infrared spectra in cases of samples that are difficult to prepare for transmission analysis. Observable features in specimens, such as defects, particles, fibers or inks, may be effectively analyzed with spatial resolution improved by a factor of four relative to transmission measurements. The accessory quickly snaps into the sample holder feature of the company’s Nicolet iN10, Nicolet iN10 MX and Nicolet Continuµm microscopes in a matter of seconds without the need for tools.

All standard microscope optics remain available, thus avoiding any concerns of alignment or downtime when switching between sampling modes. Transmission, external reflection, micro-ATR and imaging-ATR capabilities are all immediately available to address the requirements of any FTIR microscopy application.

For more information, visit: www.thermoscientific.com/ftir


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