A simple efficient method of nanofilm-on-bulk-substrate thermal conductivity measurement using Raman thermometry

•First Raman thermometric measurement of thermal conductivity of films on bulk substrate.•A simple efficient method: a dozen of films on quartz can be examined in one hour.•The method works for any film with thickness h > Λ (phonon-mean-free path).•For h < Λ, this method works when the in-plan...

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