Advanced non-contact AFM techniques

Advanced noncontact AFM techniques

noncontact_afm_01

Kelvin probe + 2nd harmonic instrumentation

noncontact_afm_02

Omicron + Nanonis Instrumentation

  • Omicron VT AFM/STM. Ultra-high vacuum chamber with 4-1,000 K temperature range.
  • Native Omicron Scala electronics control stm and contact afm.
  • Nanonis OC4 oscillator and RT4 real-time controller drive cantilever in nc-afm and demodulate deflection signal to control amplitude, frequency, determine Δf.
  • Built-in lock-ins and PID controller control dc tip bias for SKPM.
    External srs lock-in calculates 2nd harmonic amplitude.