English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Fivefold twins (5FTs), discovered nearly 200 years ago, are a common multiplytwinned structure that usually dramatically deteriorate the thermal transportproperties of nanomaterials. Here, we report the anomalous thermal conductivity($\kappa$) in a novel fivefold twinned diamond nanowires (5FT-DNWs). The$\kappa$ of 5FT-DNWs is effectively enhanced by the defects of 5FT boundaries,and non-monotonically changes with the cross-sectional area ($\textit{S}$).Above the critical $\textit{S}$ = 7.1 nm$^{2}$, 5FT-DNWs show a constant valueof $\kappa$, whereas below it, there appears a sharp increase in $\kappa$ withdecreasing $\textit{S}$. More importantly, 5FT-DNWs with minimal $\textit{S}$show a superior $\kappa$ over the bulk diamond. By confirming theNormal-process-dominated scattering event, it is demonstrated that the phononhydrodynamic behavior plays a determinative role in abnormally high $\kappa$ of5FT-DNWs with small $\textit{S}$. The super-transported phonon hydrodynamicphenomenon unveiled in the twinned diamond nanowires may provide a new routefor pursuing highly thermally conductive nanomaterials.

Abnormally High Thermal Conductivity in Fivefold Twinned Diamond Nanowires