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Virtual time, June 19, Sunday 2:30-4:30 IST (Irish Standard Time) GMT+1
Submicron simultaneous IR+Raman microscope combines optical photothermal infrared spectroscopy (O-PTIR) with Raman.
FTIR and Raman photothermal spectroscopy for material analysis are well established, mature technologies that have their practical and theoretical limitations. Now, with the breakthrough technique using O-PTIR and Raman photothermal spectroscopy infrared microscope those limitations are shattered.
The novel use of a dual purpose visible light probe not only provides for submicron IR spatial resolution, but it also doubles as the Raman excitation laser, thus providing submicron simultaneous IR+Raman spectroscopy on a single platform – the mIRage+R microscope. This generates complementary and confirmatory analysis through IR and Raman spectroscopy for a more detailed and thorough characterization for the ultimate in vibrational spectroscopic synergy.
O-PTIR photothermal spectroscopy overcomes several of the key limitations of traditional FTIR microscopy such as poor spatial resolution and complex sample preparation. By working in reflection mode, it generates high quality spectra without any dispersive scatter artifacts that are comparable to FTIR transmission/ATR spectra.
While at the same time, O-PTIR is not affected at all by fluorescence interference, a key limitation of Raman spectroscopy, thus allowing for submicron molecular characterization that is completely fluorescence free.
Steam disinfection releases micro(nano)plastics from silicone-rubber baby teats as examined by optical photothermal infrared microspectroscopy
We successfully used O-PTIR microspectroscopy to identify small microplastics down to 600 nm to demonstrate the formation of cyclic and branched polysiloxane- or polyimide-containing MNPs during the steam disinfection of silicone teats. https://doi.org/10.1038/s41565-021-00998-x
Steam disinfection releases micro(nano)plastics from silicone-rubber baby teats as examined by optical photothermal infrared microspectroscopy
We successfully used O-PTIR microspectroscopy to identify small microplastics down to 600 nm to demonstrate the formation of cyclic and branched polysiloxane- or polyimide-containing MNPs during the steam disinfection of silicone teats. https://doi.org/10.1038/s41565-021-00998-x

mIRage IR Microscope
Changing the field of IR spectroscopy
Optical photothermal infrared spectroscopy overcomes the key limitations of FTIR and Raman infrared spectroscopy by providing for a sub-micron, non-contact and fluorescence free rapid analysis. When combined with simultaneous Raman, it provides for a unique complementary and confirmatory sample analysis experience.
O-PTIR: Optical
photothermal spectroscopy
Achieve submicron IR spatial resolution
in non-contact reflection mode
Same spot.
Same resolution.
Same time.
Publications
Wide applications capabilities
O-PTIR enables unique breakthrough applications in the fields of failure analysis, pharmaceuticals, life science, identification of organic particles, and more.
New “dual range (C-H/FP)” QCL
Library (Wiley KnowItAll) search results delivered >95% match
O-PTIR spectra collected in reflection mode. Displayed spectra are raw and unprocessed (<5sec collection time, ~500nm spot size)
O-PTIR spectra are measured off thick polymers (mm’s), vs library FTIR references data off thin films (~10microns)

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Photothermal Spectroscopy Corp
325 Chapala Street
Santa Barbara, CA 93101
Phone: (805) 845-6568
Email: info [at] photothermal.com