Construction of Medusa-Like Adhesive Carbon Nanotube Array Induced by Deformation of Alumina Sheets.

Autor: Zhang K; National Laboratory of Solid State Microstructures College of Engineering and Applied Sciences Jiangsu Key Laboratory of Artificial Functional Materials and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China.; Division of Advanced Nanomaterials Key Laboratory of Nanodevices and Applications Joint Key Laboratory of Functional Nanomaterials and Devices CAS Center for Excellence in Nanoscience Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, Suzhou, 215123, China., Chen K; Platform for Characterization & Test Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, Suzhou, 215123, China., Di J; Division of Advanced Nanomaterials Key Laboratory of Nanodevices and Applications Joint Key Laboratory of Functional Nanomaterials and Devices CAS Center for Excellence in Nanoscience Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, Suzhou, 215123, China., Gong W; School of Physics and Energy, Xuzhou University of Technology, Xuzhou, 221018, China., Li Z; Department of Materials Science, Fudan University, Shanghai, 200433, China., Zhang J; Center for Nanochemistry Beijing Science and Engineering Center for Nanocarbons Beijing National Laboratory for Molecular Sciences College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China., Yao Y; National Laboratory of Solid State Microstructures College of Engineering and Applied Sciences Jiangsu Key Laboratory of Artificial Functional Materials and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China.; Division of Advanced Nanomaterials Key Laboratory of Nanodevices and Applications Joint Key Laboratory of Functional Nanomaterials and Devices CAS Center for Excellence in Nanoscience Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, Suzhou, 215123, China.
Jazyk: angličtina
Zdroj: Small (Weinheim an der Bergstrasse, Germany) [Small] 2024 May; Vol. 20 (18), pp. e2306722. Date of Electronic Publication: 2023 Dec 13.
DOI: 10.1002/smll.202306722
Abstrakt: To change the binary structure of nanotube and nanotube array in vertically aligned carbon nanotube arrays, this work deposits regularly arranged amorphous alumina sheets on the classical array growth catalyst (10 nm-thick alumina and 2 nm-thick iron) and obtains an array similar to the Medusa head. Subsequent experiments revealed that these alumina sheets show both unstable and stable qualities during growth: unstable in that they thermally deform and change their newly discovered characteristics of blocking carbon source diffusion, which regulates the nanotube growth order in specific areas; stable in that they withstand the deformation caused by heat and sequential growth of nanotubes, serving as a substrate and buffer layer for Medusa's hair, i.e., nanotube bundles on the array surface. Their combination splits this binary structure into a tertiary architecture consisting of nanotubes, nanotube bundles, and the array spanning nano-, micro-, and milli-meter. Benefiting from this structure, this array exhibits a unique near-isotropic adhesion characteristic compared to existing reports and outperforms classical and patterned arrays with the same classical catalyst and growth conditions.
(© 2023 Wiley‐VCH GmbH.)
Databáze: MEDLINE
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