Advanced noncontact AFM techniques
Kelvin probe + 2nd harmonic instrumentation
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.