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Insulation-metal transition mapping in vanadium dioxide

  • Application description
  • neaSCOPE product line

With IR nano-imaging, you can directly map the concentration of free carriers at the nanoscale, giving you a strong contrast between the conductive and isolation phases. The method is completely non-invasive and without any artifacts caused by the so-called mechanical or thermal crosstalk.

Image of the phase transition in vanadium dioxide

IR nanoscopic data measured at given sample temperatures during the phase transition of the insulator to metal (VO2). After heating, the nanoparticles of metal regions nucleate (green), then grow with increasing temperature and finally merge together. Such measurements provide a new perspective on VO2 by analyzing separately the structural and electronic properties and with them it is possible to monitor the effect of local voltage or defects on the localization of electrons.

IR-neaSCOPE+fs is designed for pump-probe spectroscopy with 10fs temporal and 10nm spatial resolution: it enables ultra-fast nanoscale science.
IR-neaSCOPE+s enables IR imaging and nano-FTIR spectroscopy by detecting radiation reflected from a standard AFM tip. It is a universal solution for all types of materials. It measures both absorbed and reflected radiation simultaneously and uses the fastest and most reliable modules for nano-imaging and nano-spectroscopy.
IR-neaSCOPE+TERs is a revolution in nano-spectroscopy thanks to a combination of nano-FTIR and Raman spectroscopy techniques, providing complete spectral analysis.
cryo-neaSCOPE+xs is a pioneering instrument for nanoscale optical imaging and spectroscopy in an extreme cryogenic environment.

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