Ultrathin,lightweight,and flexible aligned single-walled carbon nanotube(SWCNT)films are fabri-cated by a facile,environmentally friendly,and scalable printing methodology.The aligned pattern and outstanding intrinsic properties render"metal-like"thermal conduc-tivity of the SWCNT films,as well as excellent mechani-cal strength,flexibility,and hydrophobicity.Further,the aligned cellular microstructure promotes the electromag-netic interference(EMI)shielding ability of the SWCNTs,leading to excellent shielding effectiveness(SE)of～39 to 90 dB despite a density of only～0.6 g cm-3 at thicknesses of merely 1.5-24 μm,respectively.An ultrahigh thickness-specific SE of 25 693 dB mm-1 and an unprecedented normalized specific SE of 428 222 dB cm2 g-1 are accomplished by the freestanding SWCNT films,significantly surpassing previously reported shielding materials.In addition to an EMI SE greater than 54 dB in an ultra-broadband frequency range of around 400 GHz,the films demonstrate excellent EMI shielding stability and reliability when subjected to mechanical deformation,chemical(acid/alkali/organic solvent)corrosion,and high-/low-temperature environments.The novel printed SWCNT films offer significant potential for practi-cal applications in the aerospace,defense,precision components,and smart wearable electronics industries.

Zhihui Zeng;Gang Wang;Brendan F.Wolan;Na Wu;Changxian Wang;Shanyu Zhao;Shengying Yue;Bin Li;Weidong He;Jiurong Liu;Joseph W.Lyding

Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials,Ministry of Education,School of Materials Science and Engineering,Shandong University,Shandong,Jinan 250061,People's Republic of China;Department of Electrical and Computer Engineering,Beckman Institute for Advanced Science and Technology,University of Illinois at Urbana-Champaign,Urbana,IL 61801,USA;Department of Chemistry,Swiss Federal Institute of Technology in Zurich(ETH Zürich),8092 Zurich,Switzerland;School of Materials Science and Engineering,Nanyang Technological University,50 Nanyang Avenue,Singapore 639798,Singapore;Empa,Swiss Federal Laboratories for Materials Science and Technology,überland Strasse 129,8600 Dübendorf,Switzerland;Institute for Advanced Technology,Shandong University,Jinan 250061,People's Republic of China

纳微快报（英文）

[1]Zhihui Zeng;Gang Wang;Brendan F.Wolan;Na Wu;Changxian Wang;Shanyu Zhao;Shengying Yue;Bin Li;Weidong He;Jiurong Liu;Joseph W.Lyding-.Printable Aligned Single-Walled Carbon Nanotube Film with Outstanding Thermal Conductivity and Electromagnetic Interference Shielding Performance)[J].纳微快报（英文）,2022(11):143-156

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