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Authenticating a polymer film by measuring thickness using birefringence effects
Authenticating a polymer film by measuring thickness using birefringence effects
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机译:通过使用双折射效应测量厚度来认证聚合物膜
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摘要
Disclosed is a method of authenticating a polymer film. The method is performed by measuring the birefringence of a layer of the film. It is then determined if the film is authentic or otherwise based upon a birefringence measurement obtained in the measuring step.
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