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Method and system for elevated temperature measurement with probes designed for room temperature measurement

  • US 20040057497A1
  • Filed: 09/24/2002
  • Published: 03/25/2004
  • Est. Priority Date: 09/24/2002
  • Status: Active Grant
First Claim
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1. A method for elevated sample temperature measurement, a method comprising:

  • heating a sample to a sample temperature, T;

    moving a probe from a first position to a second position, wherein the first position is proximate to a reference plate held at constant temperature, T0, and the second position is proximate to the sample, and T is greater than T0;

    measuring a contact potential difference of the sample, VCPDS, with the probe being held in the second position for a measuring time, Δ

    tmeasure, sufficiently short to prevent substantial heating of the probe;

    returning the probe to the first position;

    measuring a contact potential difference of the reference plate, VCPDR; and

    determining a difference Δ

    VCPD=VCPDS

    VCPDR as a measure of a sample contact potential at T.

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