neaspec patented s-SNOM technologies

Pseudo Heterodyne (PsHet)

thumb up 100% background-free
thumb up fastest pixel method (<3 ms/pixel)
thumb up reliable (golden standard)
thumb up amplitude & phase at each pixel

High Speed Holography (HSH)

thumb up 100% background-free
thumb up fastest on the market
thumb up multispectral 
thumb up amplitude & phase from image 

nanoscale FTIR (nano-FTIR)

thumb up 100% background-free
thumb up fastest spectroscopy method
thumb up hyperspectral imaging
thumb up amplitude & phase at each pixel 

Phase Shifting (PhS)

thumb up 100% background-free
thumb down slow
thumb up relative phase 
thumb up amplitude & phase at each pixel

Other non-patented technologies

Noninterferometric (Self Homodyne)

thumb down 0% background-suppression
thumb up fast
thumb down misleading image contrast
thumb down amplitude only 

Quadrature Homodyne (QH)

thumb down up to 30% background-artefacts
thumb up fast
thumb down inconsistent contrast
thumb down calculated amplitude & phase