Tapping AFM-IR+
best resolution among AFM-IR methods
works for thick & thin samples
excellent surface sensitivity
tapping mode (noninvasive)
PTE+ (resonance-enhanced PTE)
enhanced sensitivity compared to PTE
works for thick & thin samples
nanoscale resolution for thin samples
resolution depends on thickness & morphology
contact mode (tip & sample damage)
PTE (classic Photo-Thermal Expansion)
simple setup without laser-feedback
cost efficient (lowest price/wavenumber)
insensitive to bond orientation
poor spatial resolution
works for thick samples only
contact mode (tip & sample damage)