The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 03, 2011
Filed:
Feb. 15, 2007
Pierre-yves Thro, Gif-sur-Yvette, FR;
Francois Brygo, Orsay, FR;
Sergey Fomichev, Paliseau, FR;
Alexandre Semerok, Paliseau, FR;
Pierre-Yves Thro, Gif-sur-Yvette, FR;
Francois Brygo, Orsay, FR;
Sergey Fomichev, Paliseau, FR;
Alexandre Semerok, Paliseau, FR;
Abstract
The present invention relates to a method for characterizing a material using active pyrometry. The material comprises at least one thin surface layer arranged on a thick substrate. The present invention heats the surface (Z) of the material by exposing the material to high-frequency laser pulses, so as to perform a series of temperature increase/decrease thermal cycles, accompanied by a heat build-up from one cycle to the next. The present invention collects the emitted radiation, acquires and processes the signals measured by comparing the measured values to the theoretical values obtained by modelling, so as to obtain thermo-physical properties for characterizing the material. The present invention also relates to a device for implementing the method comprising a high-frequency pulsed laser used as heat source.