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Van der Pauw measurment- source unit

  1. Nov 6, 2015 #1
    I wanted to study electrical behavior of thin films. Can anybody suggest me suitable source measure unit please?
    (also of low budget)
    Power supply: Voltage (few volts)
    measurement: current (micro- milliamps)
     
  2. jcsd
  3. Nov 8, 2015 #2

    fresh_42

    Staff: Mentor

    I've found some cheap devices on amazon looking after "microampere meter" or "milliampere meter"
     
  4. Nov 15, 2015 #3
    Thanks . there are many as youmentioned
     
  5. Nov 15, 2015 #4
    You could use a lock-in amplifier to apply a small AC current using a shunt resistor and measure the AC voltage across the sample.
     
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