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Specialized iNANO Lecture: Expanding Applications for AFM-based Infrared Nanospectroscopy

Senior partner Curtis Marcott, Light Light Solutions, Athens, Georgia, United States

Info about event


Thursday 20 March 2014,  at 10:15 - 11:00


Meeting room 1590-213 of the iNANO House, Gustav Wieds Vej 14, 8000 Aarhus C


Senior partner Curtis Marcott, Light Light Solutions, Athens, Georgia, United States

Expanding Applications for AFM-based Infrared Nanospectroscopy

Atomic force microscope-based infrared spectroscopy (AFM-IR) has been developed in recent years providing extremely high spatial resolution chemical characterization and imaging. The technique is based on the combination of a tunable infrared laser with an atomic force microscope that can locally map and measure thermal expansion of nanoscale regions of a sample resulting from the absorption of infrared radiation. Because the AFM probe tip can map the thermal expansion on very fine length scales, the AFM-IR technique provides a robust way to obtain interpretable IR absorption spectra at spatial resolution scales well below the diffraction limit.

The technique also provides simultaneous and complementary mapping of mechanical properties and has been widely and successfully applied to applications in polymers and the life sciences.
Most previous AFM-IR measurements have been performed using total internal reflection illumination from below the sample, generally requiring samples to be prepared as thin sections transferred to an IR transparent prism. We have recently extended the AFM-IR technique to work in a "top side illumination" configuration. The top side illumination enables a much broader range of samples to be measured and can in some cases dramatically simplify sample preparation.
Using top side illumination we have been able to measure samples including semiconductors, metal films, geological samples and others.

Curtis Marcott is currently a Senior Partner at Light Light Solutions, a spectroscopic consulting firm. A former research fellow at Procter & Gamble, Curt was the 2011 President of the Society of Applied Spectroscopy and is a member of the Editorial Advisory Board of Applied Spectroscopy. He is a past member of the editorial advisory boards of Analytical Chemistry and Vibrational Spectroscopy, the A-page advisory panel of Analytical Chemistry, and the board of managers of the Coblentz Society. He served as program committee chairman for the 2009 FACSS Conference and the Sixth International Conference on Advanced Vibrational Spectroscopy (ICAVS-6). Dr. Marcott received the 1993 Williams-Wright Award from the Coblentz Society for achievement in vibrational spectroscopy, was named the 2001 Cincinnati Chemist of the Year, and is an Adjunct Professor of Chemistry at Miami University in Oxford, OH. Curt obtained his PhD in Chemistry from the University of Minnesota in 1979.

   Host: Associate professor Mingdong Dong, Interdisciplinary Nanoscience Center, Aarhus University, Aarhus