Research Equipment

Four-Point Probe Measurement System

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Status: Active
Four-Point Probe Measurement System

Device Information
Model: Signatone Pro4 Resistivity System

Technical Specifications

Measurement Capabilities:

  • Surface and bulk resistivity measurements

  • Manual mapping

  • High accuracy at 1% level

  • Measurement Range: 10 µΩ/□ – 100 MΩ/□ (with Keithley 2450)

  • Voltage Range: 20 mV – 200 V (with Keithley 2450)

  • Current Range: 10 nA – 1 A (with Keithley 2450)

Probe Configuration:
The system includes two probe heads:

Head 1:

  • Tip Spacing: 0.0625 in

  • Applied Pressure: 85 g

  • Probe Material: Osmium

  • Tip Diameter: 0.005 in

Head 2:

  • Tip Spacing: 0.0625 in

  • Applied Pressure: 180 g

  • Probe Material: Osmium

  • Tip Diameter: 0.005 in