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Mitigating Contact‐Constricted Thermal Bottlenecks by Magnetically Programmable hBN Bridge Fillers in Al 2 O 3 /Epoxy Composites

ABSTRACT Thermally conductive polymer composites often suffer from limited heat transport due to contact constriction in spherical particulate networks. To address this challenge, we report a magnetically programmable bridge‐filler architecture that enhances thermal pathways in e...