Nature paper by Schlumberger researchers used photothermal based nanoscale IR spectroscopy to analyze heterogeneous process of petroleum generation

Santa Barbara, Calif. – January 15th, 2018 – Using Anasys Instruments’ nanoIR2™, AFM based nanoscale IR spectroscopy system, researchers at the Schlumberger-Doll Research Center and US Geological Survey provided for the first time the simultaneous geochemical and geomechanical characterization of individual dispersed organic matter particles in shale. The results were published in Nature Communications.

Dr. Andrew Pomerantz, Principal Research Scientist at Schlumberger, and colleagues obtained AFM-IR spectra of shale that was pyrolyzed to simulate thermal maturation, enabling them to visualize the process on a maceral-by-maceral basis. The team was able to conclude that the maturation process results in a change in individual maceral composition and overall concentration, that is consistent with previous bulk studies.

“IR spectroscopy has been quite valuable for bulk characterization of kerogen, but natural shale rocks contain kerogen that can be heterogeneous at length scales below the diffraction limit. The combination of IR spectroscopy with AFM detection can probe the composition of different grains of kerogen at small length scales, measuring how the different pieces evolve as petroleum is generated,” said Pomerantz. “We found that some kerogen pieces undergo extensive changes in composition while others barely change at all, and these results give us additional insight into how oil occurs in nature.“

The latest generation nanoIR2-FS™ provides nanoscale IR absorption spectroscopy using a unique method that breaks the diffraction limit of conventional IR spectroscopy by >100x. Nanoscale IR spectroscopy is able to measure a wide range of material types, ranging from life sciences to 2D materials, polymeric systems, and more.

The publication can be found online here.
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About Anasys Instruments

Anasys Instruments is the world leader in phothermal IR spectroscopy from the nanoscale to the sub-micron and macro scales. We are dedicated to delivering innovative products and solutions that measure spatially varying physical and chemical properties with nanoscale spatial resolution in a diverse range of fields, including polymers, 2D materials, materials science, life science and micro-electronics industry. Our goal is to provide productive solutions that help researchers clear the path to their next discovery and help industrial companies to solve critical process problems.


About nanoIR2-FS

The nanoIR2-FS is the latest generation nanoscale IR spectroscopy, chemical imaging and property mapping system for both materials science and life science applications. The new system provides spectroscopic capabilities that provide excellent correlation to FTIR transmission spectra on a wide range of material types enabling nanoscale FTIR measurement.

The system also provides IR based chemical imaging to provide mapping of chemical variations of the feature of interest. Unique Point Spectroscopy capabilities provide both spectroscopy and chemical imaging with a single source.

An integrated AFM provides unique property mapping capabilities with thermal, mechanical and electrical modes to support unique multi-modal characterization of a wide range of materials science and life science applications.

The nanoIR2-FS is built with ease of use and user productivity in mind with many automation features reducing the need for user set up and complex laser and optical alignment procedures.


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