2022
DOI: 10.1039/d2cs00095d
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A guide to nanoscale IR spectroscopy: resonance enhanced transduction in contact and tapping mode AFM-IR

Abstract: By combining capabilities of atomic force microscopy (AFM) with infrared (IR) spectroscopy, AFM-IR resolves nanoscale compositional details. This tutorial reviews technical breakthroughs, working principles, best practices, and future prospects of AFM-IR.

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Cited by 79 publications
(89 citation statements)
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“…Photothermal induced resonance (PTIR), also known as AFM-IR, measures infrared (IR) absorption spectra and maps with nanoscale resolution. This feat is achieved by using the probe of an atomic force microscope (AFM) to transduce the photothermal expansion of a sample illuminated by a pulsed, wavelength-tunable laser.…”
mentioning
confidence: 99%
“…Photothermal induced resonance (PTIR), also known as AFM-IR, measures infrared (IR) absorption spectra and maps with nanoscale resolution. This feat is achieved by using the probe of an atomic force microscope (AFM) to transduce the photothermal expansion of a sample illuminated by a pulsed, wavelength-tunable laser.…”
mentioning
confidence: 99%
“…Here, unique AFM-IR measurements were conducted on samples prepared at 20 mN/m, as shown in Figures , , and S12. As known, AFM-IR spectra allow for the chemical composition analysis at higher spatial resolutions (down to 10 nm) compared to conventional far-field IR spectroscopy, revealing localized chemical composition of nano-sized domains. , Specifically, the AFM-IR mode can collect chemical maps and IR spectra at selected locations via photothermal phenomenon at specific wavelengths, showing the distribution of various chemical species. , …”
Section: Resultsmentioning
confidence: 99%
“…As known, AFM-IR spectra allow for the chemical composition analysis at higher spatial resolutions (down to 10 nm) compared to conventional far-field IR spectroscopy, revealing localized chemical composition of nano-sized domains. 46,47 Specifically, the AFM-IR mode can collect chemical maps and IR spectra at selected locations via photothermal phenomenon at specific wavelengths, showing the distribution of various chemical species. 46,47 AFM-IR mapping images of the C16P16 and C8P24 LB films assembled at 20 mN/m below and above LCST were collected at 1738 cm −1 wavenumber, which corresponds to vibrations of the ester and carboxylate groups from the cores (Figures 4 and S12).…”
Section: Synthesis Of Thermo-responsive Branched Polymersmentioning
confidence: 99%
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“…Previous implementations of AFM-detected spectroscopy have measured the degradation of MAPbI 3 films, mapped domains in metal–organic frameworks with mixed linkers, and chemically mapped cancer cells . For more details on previous AFM-detected spectroscopies and nanoscale imaging, we direct the reader to recent reviews on the topic. , …”
Section: Introductionmentioning
confidence: 99%