Introduction to Photothermal AFM-IR for Infrared Spectroscopists
Highly productive nanoscale spectroscopy that is easy to use and easy to interpret
With photothermal atomic force microscope infrared spectroscopy (AFM-IR), chemical identification at the nanoscale is achieved by measuring local IR spectra directly at the AFM tip. This method stands out among nanoscale spectroscopic approaches for its user-friendly operation, straightforward data interpretation, fast measurement times, and reliable repeatability. Bruker's AFM-IR technology delivers monolayer sensitivity, offers spatial resolution below 10 nm, accommodates various probing depths, and supports correlative analysis of chemical and mechanical properties.
In this webinar, Bruker experts will provide a thorough introduction to photothermal AFM-IR, tailored for IR spectroscopists. They will share explanations of underlying physics, examples of FTIR spectral correlation, and practical experimental considerations.
Join us to learn:
- How the technique works, both theoretically and practically
- Why AFM-IR is spectrally correlated with FTIR
- When AFM-IR is an ideal technique choice
- What experimental factors impact AFM-IR spectra
Wednesday, April 22 – 8AM PDT | 11AM EDT | 5PM CEST
Webinar Summary
Photothermal atomic force microscope infrared spectroscopy (AFM-IR) enables chemical identification at the nanoscale by collecting local infrared spectra at the AFM tip. Compared to other nanoscale spectroscopic techniques, AFM-IR provides major advantages in ease of use, ease of interpretation, measurement speed, and data repeatability. The AFM-IR technique developed at Bruker has achieved monolayer sensitivity, sub-10 nm spatial resolution, a range of probing depths, and correlative measurements of chemical and mechanical properties.
The AFM-IR signal is proportional to sample absorption coefficients of the IR irradiation, leading to correlation between the collected AFM-IR spectra and the transmission mode bulk Fourier transform infrared (FTIR) spectra. This correlation is critical and forms the basis of the chemical identification capability of the AFM-IR technique. Several application examples in different research fields will be highlighted to demonstrate such correlation. Valuable nanoscale chemical information is extracted from the AFM-IR spectra’s peak ratios, band positions and shapes. After that, experimental factors that may impact the AFM-IR spectra will be discussed. These factors need to be properly considered to have correct interpretations of the AFM-IR spectra.
Find out more about the technology featured in this webinar or our other solutions for nanoscale infrared spectroscopy:
