The 4-point probes method is an electrical impedance measuring technique that uses separate pairs of current-carrying and voltage-sensing electrodes to make an accurate measurement of the sample resistivity. 4-point probes are also used to measure sheet resistance of thin films. An additional module is available to test the semiconductor type (n/p).
Instrument Features
- Current source: 10 nA to 100 mA.
- Probe head (different loads): 10 g – 30 g (low); 60 g – 150 g (high).
- Probe spacing: 1.00 mm (needle to needle).
- Tungsten carbide needles: 0.4 mm diameter (0.3 mm diameter for close spacing).
Prices
The 4-point probe is available for rent with or without an operator. Prices are in Norwegian kroner (NOK) excl. VAT. All prices are subject to change.
| User Category | Price without operator/hour | Price with operator/hour |
|---|---|---|
| Academia | 100 NOK | 850 NOK |
| Start-up | 125 NOK | 1225 NOK |
| Industry | 150 NOK | 1250 NOK |
The reduced fees for start-up companies are available for the first 24 months after start-up. Training costs are currently covered by NorFab.
Contact
- Simon Phillip Cooil, Lab Manager
- Eirini Zacharaki, Research Infrastructure Coordinator