Engineering chirality at wafer scale with ordered carbon nanotube architectures.

Autor: Doumani J; Department of Electrical and Computer Engineering, Rice University, Houston, TX, USA.; Applied Physics Graduate Program, Smalley-Curl Institute, Rice University, Houston, TX, USA.; Department of Electrical and Computer Engineering, The University of Utah, Salt Lake City, UT, USA., Lou M; Department of Electrical and Computer Engineering, The University of Utah, Salt Lake City, UT, USA., Dewey O; Carbon Hub, Rice University, Houston, TX, USA.; Department of Chemical and Biomolecular Engineering, Rice University, Houston, TX, USA., Hong N; J.A. Woollam Co., Inc., Lincoln, NE, USA., Fan J; Department of Electrical and Computer Engineering, The University of Utah, Salt Lake City, UT, USA., Baydin A; Department of Electrical and Computer Engineering, Rice University, Houston, TX, USA.; Smalley-Curl Institute, Rice University, Houston, TX, USA., Zahn K; Department of Electrical and Computer Engineering, Rice University, Houston, TX, USA., Yomogida Y; Department of Physics, Tokyo Metropolitan University, Tokyo, Japan., Yanagi K; Department of Physics, Tokyo Metropolitan University, Tokyo, Japan., Pasquali M; Carbon Hub, Rice University, Houston, TX, USA.; Department of Chemical and Biomolecular Engineering, Rice University, Houston, TX, USA.; Smalley-Curl Institute, Rice University, Houston, TX, USA.; Department of Chemistry, Rice University, Houston, TX, USA.; Department of Materials Science and NanoEngineering, Rice University, Houston, TX, USA., Saito R; Department of Physics, Tokyo Metropolitan University, Tokyo, Japan.; Department of Physics, Tohoku University, Sendai, Japan.; Department of Physics, National Taiwan Normal University, Taipei, Taiwan., Kono J; Department of Electrical and Computer Engineering, Rice University, Houston, TX, USA.; Carbon Hub, Rice University, Houston, TX, USA.; Smalley-Curl Institute, Rice University, Houston, TX, USA.; Department of Materials Science and NanoEngineering, Rice University, Houston, TX, USA.; Department of Physics and Astronomy, Rice University, Houston, TX, USA., Gao W; Department of Electrical and Computer Engineering, The University of Utah, Salt Lake City, UT, USA. weilu.gao@utah.edu.; Carbon Hub, Rice University, Houston, TX, USA. weilu.gao@utah.edu.
Jazyk: angličtina
Zdroj: Nature communications [Nat Commun] 2023 Nov 15; Vol. 14 (1), pp. 7380. Date of Electronic Publication: 2023 Nov 15.
DOI: 10.1038/s41467-023-43199-x
Abstrakt: Creating artificial matter with controllable chirality in a simple and scalable manner brings new opportunities to diverse areas. Here we show two such methods based on controlled vacuum filtration - twist stacking and mechanical rotation - for fabricating wafer-scale chiral architectures of ordered carbon nanotubes (CNTs) with tunable and large circular dichroism (CD). By controlling the stacking angle and handedness in the twist-stacking approach, we maximize the CD response and achieve a high deep-ultraviolet ellipticity of 40 ± 1 mdeg nm -1 . Our theoretical simulations using the transfer matrix method reproduce the experimentally observed CD spectra and further predict that an optimized film of twist-stacked CNTs can exhibit an ellipticity as high as 150 mdeg nm -1 , corresponding to a g factor of 0.22. Furthermore, the mechanical rotation method not only accelerates the fabrication of twisted structures but also produces both chiralities simultaneously in a single sample, in a single run, and in a controllable manner. The created wafer-scale objects represent an alternative type of synthetic chiral matter consisting of ordered quantum wires whose macroscopic properties are governed by nanoscopic electronic signatures and can be used to explore chiral phenomena and develop chiral photonic and optoelectronic devices.
(© 2023. The Author(s).)
Databáze: MEDLINE
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