Anisotropic thermally conductive films (TCFs) capable of achieving efficient intra-plane heat dissipation while suppressing inter-plane thermal transfer have become essential components for next-generation electronics thermal management. Inspired by nacre, we demonstrated an ultrahigh anisotropic thermally conductive MXene (Ti3C2Tx) films through a bioinspired confined strategy. The layer-by-layer blade coating is applied to prepare confined highly oriented layered structure of MXene and montmorillonite (MMT) nanosheets by interfacial bridging. The resultant MXene films exhibit exceptional intra-plane thermal conductivity (63.4 W m−1 K−1) while creating substantial phonon scattering interfaces to minimize inter-plane thermal conductivity (0.09 W m−1 K−1), thereby providing a thermal anisotropy factor that reaches 707. The resultant MXene films have superior cooling efficiency compared to commercial TCFs as thermal spreaders for next-generation electronics. Our strategy provides an avenue for assembling other two-dimensional (2D) nanosheets into high-performance functional film.
各向异性导热膜(tcf)能够实现有效的平面内散热,同时抑制平面间的热传递,已成为下一代电子热管理的重要组成部分。受珍珠质启发,我们通过生物激发受限策略展示了超高各向异性导热MXene (Ti3C2Tx)薄膜。采用逐层叶片涂层的方法,通过界面桥接制备了MXene和蒙脱土(MMT)纳米片的受限高取向层状结构。所得到的MXene薄膜具有出色的面内导热系数(63.4 W m−1 K−1),同时产生大量声子散射界面以最小化面间导热系数(0.09 W m−1 K−1),从而提供了热各向异性因子达到707。作为下一代电子产品的散热材料,与商用tcf相比,合成的MXene薄膜具有优越的冷却效率。我们的策略为将其他二维(2D)纳米片组装成高性能功能薄膜提供了一条途径。
{"title":"Bioinspired Confined Anisotropic Thermally Conductive MXene Film for Efficient Thermal Management","authors":"Lei Li, Ruohan Xu, Jia Yan, Yanlei Wang, Junfeng Lu, Zejun Zhang, Wei Li, Wangwei Lian, Jie Sun, Baohua Jia, Qunfeng Cheng","doi":"10.1002/adfm.202529268","DOIUrl":"https://doi.org/10.1002/adfm.202529268","url":null,"abstract":"Anisotropic thermally conductive films (TCFs) capable of achieving efficient intra-plane heat dissipation while suppressing inter-plane thermal transfer have become essential components for next-generation electronics thermal management. Inspired by nacre, we demonstrated an ultrahigh anisotropic thermally conductive MXene (Ti<sub>3</sub>C<sub>2</sub>T<i><sub>x</sub></i>) films through a bioinspired confined strategy. The layer-by-layer blade coating is applied to prepare confined highly oriented layered structure of MXene and montmorillonite (MMT) nanosheets by interfacial bridging. The resultant MXene films exhibit exceptional intra-plane thermal conductivity (63.4 W m<sup>−1</sup> K<sup>−1</sup>) while creating substantial phonon scattering interfaces to minimize inter-plane thermal conductivity (0.09 W m<sup>−1</sup> K<sup>−1</sup>), thereby providing a thermal anisotropy factor that reaches 707. The resultant MXene films have superior cooling efficiency compared to commercial TCFs as thermal spreaders for next-generation electronics. Our strategy provides an avenue for assembling other two-dimensional (2D) nanosheets into high-performance functional film.","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"19 1","pages":""},"PeriodicalIF":19.0,"publicationDate":"2026-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146116257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Deepika Yadav, Spyros Stathopoulos, Patrick Foster, Andreas Tsiamis, Mohamed Awadein, Hannah Levene, Themis Prodromakis
Tunable capacitors are essential for adaptive and reconfigurable electronics, yet most existing implementations rely on continuous biasing or mechanical actuation. In this context, ferroelectric memcapacitors have emerged as promising non-volatile tuning elements for analogue, RF, and neuromorphic computing applications. While multilevel capacitance has been demonstrated in recent reports, a systematic understanding of switching behavior, stability, and circuit-level implications remains limited. Here, we present a voltage-programmable (<span data-altimg="/cms/asset/dcc2dc97-a57a-48e9-9985-72d7671a1094/adfm74384-math-0001.png"></span><math altimg="urn:x-wiley:1616301X:media:adfm74384:adfm74384-math-0001" display="inline" location="graphic/adfm74384-math-0001.png">