Article in Nature, Vol. 533, Issue 7604, pp. 517, “Continuous probing of cold complex molecules with infrared frequency comb spectroscopy”
Summary of article: Cavity enhanced direct frequency comb infrared spectroscopy was demonstrated to be useful in detecting multiple rotations and vibrational states of a molecule in a broadband manner; thus, opening up its use in real-time solution based analysis of molecules in dilute solutions. Extending the idea further, variation of the technique may also find use in robotic rovers sent to Mars for in situ characterization of the presence of organic materials in soil samples. In general, infrared frequency comb spectroscopy provides a technique for modulating the frequency scanning of spectroscopy which enhances its ability to detect small perturbations in absorption within the infrared wavelength band. This provides a measure of the multiple, hitherto unprobed, vibrational and rotational states inherent in molecular motion. Challenges of the technique likely comes from discerning individual rotational or vibrational states from the convoluted information captured by the spectroscopy technique, which limits the molecular weight of complex molecules accessible for analysis. Thus, future refinement of infrared frequency comb spectroscopy would likely come from both instrumentation and analytical algorithms for data processing.
Link to original article: http://www.nature.com/nature/journal/v533/n7604/full/nature17440.html
Category: Interesting scientific articles, instruments, chemistry, physics,
Tags: infrared spectroscopy, frequency comb, rotational states, vibrational states, complex molecules,