LOGO Anfatec Instruments AG
Measurement Science and Technology &
Scanning Probe Microscopy


Scanning Kelvin Probe System (AFT-KP150)





Scanning Kelvin Probe
Parameters and Special Features:

Motorized Approach between Tip and Sample
Motorized X-Y-Movement over 150 mm x 150 mm
Active Position Tracking with Encoders
Step Size in Z-direction: 625 nm
Full Step in X - and Y-direction: 5 m / microstep operation used
Work Function Resolution: < 1 meV with 1.4 mm tip diameter on metals
Smallest available Tip Diameter: 0.1 mm
Integrated Faraday Shield
Gold plated Steel Frame
Two Golden KP-Heads included
Maximum Dimensions: 50 cm (W) x 60 cm (D) x 25 cm (H)
Maximum Sample Size: 150 mm x 150 mm
Vacuum Sample Chuck
Included Reference Samples: HOPG, Au on Si, Al/Au-edge, Potential Check
Humidity and Temperature Sensor (USB)
Optional: Protective Housing
Optional: Rainbow Source (USB)
This Scanning Kelvin Probe System moves the KP-Head in vertical direction in order to realize an motorized approach between the KP Probe and the Sample. The Samples are mounted on a Vacuum Chuck that moves the Sample 150 mm by 150 mm across the Base Frame.
Like in the Single Point KP System, the KP Head can be easily exchanged.
The system is delivered with the Thomson II controller and a Windows PC. A Scripting Language allows the user to define Measurement Procedures and provides maximum flexibility.
This system can be scaled to up to 70 cm x 50 cm Sample Size. It can be equiped with an independently moving Top Contact whose function is checked with a capacitive circuit. Thus, surface layers on large scale glass substrates with electrode intersections can be analysed.

Example Images made by KP150 Kelvin Probe System

Finger print on an aluminum plate.
Scan Range: 10 mm x 10 mm, Probe diameter: 0.2 mm, 250 Pixel by 250 Pixel, Scan Speed: 0.3 s/Pixel.
Finger Surface Potential
Surface Potential Image
Color Scale: 838 mV to 1.21V
Finger Topography
Simultaneously acquired Surface Topography
Color Scale covers 19 um Height
Pen drawing on Al
Scan Range: 10 mm x 10 mm, Probe diameter: 0.2 mm, 250 Pixel by 250 Pixel, Scan Speed: 0.25 s/Pixel.
Finger Surface Potential
Surface Potential Image
Color Scale: 0 mV to 900V
Finger Topography
Simultaneously acquired Surface Topography
Color Scale covers 8 m Height
Finger Topography
Signal amplitude (Slope)
no real physical units