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:
Jul. 15, 2003
Filed:
Oct. 17, 2001
Tetsuya Baba, Tsukuba, JP;
Abstract
A non-metal film whose thermophysical properties are unknown is disposed between a first metal film and a second metal film, thereby forming a sample having a three-layer structure. The metal films have predetermined known thermophysical properties, belong to the same sort of substance and have the same thickness. The three-layer substance is disposed on a transparent substrate and is heated from below the second metal film, using a picosecond light pulse coming from below and passing through the transparent substrate. The light pulse used in the irradiation is converted into heat in the second metal film during only one picosecond, with such heat diffusing through interface/non-metal film layer/interface and thus arriving at the first metal film. By measuring a temperature change on the surface of the first metal film, it is possible to perform correct measurement by using the thermoreflectance method formerly suggested in a patent application by the inventors of the present invention.