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AFM-IR Publication Makes the Cover of December’s Issue of Applied Spectroscopy

Published: Thursday, December 20, 2012
Last Updated: Thursday, December 20, 2012
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Journal describes the highlighted Focal Point article for the final issue of 2012.

Anasys Instruments' latest review paper on nanoscale AFM-IR chosen for the cover position of Applied Spectroscopy.

The Society for Applied Spectroscopy features a new review paper on the combining of atomic force microscopy and infrared spectroscopy on the cover of its flagship journal, Applied Spectroscopy, December 2012.

The journal describes the highlighted Focal Point article for their final issue of 2012. This reviews a powerful new capability which enables the chemical characterization of polymeric and biological samples at nanoscale spatial resolutions via infrared (IR) spectroscopy.

The combination of a broadly tunable IR laser source with photothermal detection via the tip of an atomic force microscope (AFM) permits the collection of sub-diffraction-limited IR spectra with band contours identical to those obtained by conventional transmission IR spectroscopy.

The cover images show how the AFM-IR technique is used to acquire IR absorption spectra and absorption images with spatial resolution on the 50-100 nm scale, including the mapping of an IR-absorbing species in a single bacterium cell and the ability to differentiate the chemical composition of individual polymeric domains in a model pharmaceutical formulation.

Finally, it is shown that by controlling the polarization of the IR excitation laser, it is possible to obtain important information regarding the molecular orientation in electrospun nanofibers.

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