Anfatec Instruments AG

Measurement Science and Technology &
Scanning Probe Microscopy

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The Golden STM

Parameter survey

Maximum Z-range: 2 µm 
Maximum X- and Y-Range >> 600 nm
Noise in Z-direction < 0.05 nm
Noise X-direction < 0.1 nm
Current noise < 20 pA
Z-noise (approached) < 200 pm
Lateral / vertical resolution: atomic

Sample holder diameter

12 mm

  • Golden (chemically resistive) vibration isolated
    STM body with implemented preamplifier
  • Computer with PCI board based SPM controller
  • Anfatec Scan & Anfatec Present
  • 19 “ STM controller (extra low noise 24 bit converters)
  • HV display for z-direction
  • high voltage amplifiers for the x-y-tube scanning
  • optional: PC controlled bi-potentiostat
    and electrochemical cell


Click here to enlarge the image.


current image

topographic image
Provided modes:

  • constant height mode

  • constant current mode

  • distance spectroscopy of the tunneling

  • tunneling voltage spectroscopy

  • dI/dU spectroscopy

Image of a gold surface

Click here to enlarge the image

sputtered gold layer
on silicon
image range: 200 nm
height: 2.3 nm

Further experiments, e.g. for the detection of work function differences, can be added easily,
if an additional lockin amplifier is utilized.

The STM is provided complete with image acquistion and image processing software.

As accessory, we provide a tip etching tool for tungsten tips based on a scientific publication.
The tool is affordable, easy to handle and guaranties over 50 % usable STM tips.