Strongly reduced thermal conductivity in hybrid ZnO/nanocellulose thin films

Hua Jin, Giovanni Marin, Ashutosh Giri, Tommi Tynell, Marie Gestranius, Benjamin P. Wilson, Eero Kontturi, Tekla Tammelin, Patrick E. Hopkins, Maarit Karppinen

    Research output: Contribution to journalArticleScientificpeer-review

    18 Citations (Scopus)

    Abstract

    Utilizing a combination of atomic layer deposition and dip-coating techniques, we have incorporated natural nanocellulose fibers into an inorganic matrix in order to create a layered hybrid inorganic-organic thin-film structure. Such layer-engineered hybrid materials with an unorthodox combination of components are highly potential candidates for exciting new properties. Here, we show a more than an order of magnitude reduction in the cross-plane thermal conductivity for ZnO thin films achieved with the regular inclusion of the cellulose nanofiber layers. We foresee that a similar approach as presented here for ZnO could also be applied to other inorganic materials based on earth-abundant elements to influence their thermal transport properties.
    Original languageEnglish
    Pages (from-to)6093-6099
    JournalJournal of Materials Science
    Volume52
    Issue number10
    DOIs
    Publication statusPublished - 1 May 2017
    MoE publication typeA1 Journal article-refereed

    Funding

    The present work has received funding from the European Research Council under the European Union’s Seventh Framework Programme (FP/2007-2013)/ERC Advanced Grant Agreement (No. 339478) and ERC Proof-of-Concept Grant Agreement (No. 712738), Academy of Finland (Nos. 259500, 292431, 303452), the Aalto School of Chemical Technology—VTT Forest Meets Chemistry Programme and from the United States Army Research Office (No. W911NF-16-1-0320).

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