In addition to hyPIRTM (hyperspectral PiFM infrared images consisting of nano IR spectrum for each pixel), we are excited to share a hyperspectral s-SNOM image where s-SNOM signal as a function of wavelength is acquired at each pixel of this 128 x 128 image of hBN. Shown below are four s-SNOM images at four wavenumbers created from the hyperspectral image. Click to see a video of the full hyperspectral s-SNOM image.
For more PiFM applications, check out our PiFM @ Work blog
Read about an exciting new application of PiFM in the visible wavelength (Vis PiFM) in a recent publication. Researchers visualized the changing absorption of a perovskite photovoltaic film at 650 nm as a function of stress voltage due to the resulting migration of cationic and anionic species. As seen in the sequential images taken at 0V, -1V, and then +1V, the migration is mostly reversible.