Article
Chemistry, Multidisciplinary
Antonio J. Santos, Marta Escanciano, Alfonso Suarez-Llorens, M. Pilar Yeste, Francisco M. Morales
Summary: A new dry method for fabricating thermochromic products using controlled heat treatment of pure vanadium nanoparticles has been presented. The optimal fabrication conditions were determined through experiments, leading to a green and efficient process suitable for industrial production with enhanced product performance.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Zheng Niu, Xili Cui, Tony Pham, Gaurav Verma, Pui Ching Lan, Chuan Shan, Huabin Xing, Katherine A. Forrest, Shanelle Suepaul, Brian Space, Ayman Nafady, Abdullah M. Al-Enizi, Shengqian Ma
Summary: A new type of ultra-strong C2H2 nano-trap has been proposed, which efficiently captures C2H2 molecules and separates C2H2/CO2 mixture based on multiple binding interactions. The nano-trap exhibits high C2H2 uptake, selectivity, and the locations of C2H2 molecules within it have been visualized by in situ single-crystal X-ray diffraction studies, identifying multiple binding sites responsible for the strong interactions with C2H2.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Materials Science, Ceramics
Mohd Faiyaz, Sung Soo Ha, Hojun Oh, Hyon Chol Kang, Do Young Noh
Summary: This study reported the synthesis and structure of 'V' shape twinned vanadium dioxide nanocrystals grown on c-plane sapphire substrates, with the (100)M twin plane playing a key role in determining the morphology. The twinned VO2 nanocrystals were epitaxial to the substrate with a rectangular cross-section shape.
CERAMICS INTERNATIONAL
(2021)
Review
Chemistry, Multidisciplinary
Yibei Xue, Shu Yin
Summary: Smart materials, especially element-doped vanadium dioxide (VO2), have great potential due to their autonomous response behavior and modifiable properties. Element doping can tailor the performance of VO2, making it more suitable for practical applications.
Article
Nanoscience & Nanotechnology
Wenwen Xu, Shanguang Zhao, Liang Li, Lele Fan, Jian Yuan, Yumeng Zhang, Bing Li, Zhongliang Liu, Qinzhuang Liu
Summary: In this study, high-quality VO2 film on SiC substrate was prepared by water vapor oxidation with a graphene buffer layer, showing excellent phase transformation properties and optoelectronic properties. Compared with VO2/SiC sample without graphene buffer layer, the VO2/G/SiC films exhibited a resistance change up to four-orders of magnitude across the phase transition boundary, indicating the significant role of graphene layer in the film growth process. This research not only provides an economical and feasible method for high-quality VO2/G/SiC thin film preparation, but also offers some clues for the application of graphene-based VO2 devices in the future.
REVIEWS ON ADVANCED MATERIALS SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
D. Shiga, X. Cheng, T. T. Kim, T. Kanda, N. Hasegawa, M. Kitamura, K. Yoshimatsu, H. Kumigashira
Summary: Through in situ photoemission spectroscopy, the changes in the electronic structure of Cr-doped VO2 films on TiO2 substrates were investigated. The phase diagram of CrxV1-xO2 was obtained, showing the influence of strain effect on the metal-insulator transition temperature. The spectroscopic investigations revealed the changes in energy gap and V 3d states, as well as the existence of Mott insulating phase without V-V dimerization at high doping concentration.
Article
Materials Science, Multidisciplinary
A. Bailly, P. Bouvier, S. Grenier, T. Hajlaoui, M. Gaudin, A. Y. Ramos, M. Chaker, L. Laversenne
Summary: We investigated the effect of boron doping on the functional and structural properties of VO2 thin films grown on Al2O3(0001). Boron insertion reduced the transition temperature and broadened the hysteresis loop, while slightly decreasing the resistivity contrast. The increase in boron concentration also resulted in the formation of two different epitaxial relationships in the VO2 films and the presence of a transient M2 phase in the highest doped sample.
Article
Materials Science, Multidisciplinary
I. P. Zibrova, V. P. Filonenkoa, V. A. Sidorova, N. M. Chtchelkatcheva, M. V. Magnitskayaa
Summary: A new high-pressure modification, VO2(S), was obtained by thermobaric treatment of a stoichiometric mixture of V2O3 + V2O5 powders. The crystal structure of VO2(S) is double-layered, with distorted VO6 octahedra as the structural units. It undergoes a weak first-order phase transition. The charge and heat transport properties were evaluated through density functional calculations and the semiclassical Boltzmann approach.
Article
Physics, Applied
Chirag Saharan, Pawan S. Rana, Manish Kumar
Summary: Energy saving methods/materials are important for meeting society's energy demands. Smart windows made of thermochromic materials, such as thermochromic vanadium dioxide (VO2), show promise in reducing building energy consumption. To improve the low visible light transmittance of VO2, a layer of antireflecting Ti-doped ZnO (TZO) was integrated. The bilayer TZO/VO2 thin film exhibited enhanced visible light transmittance, making it a potential option for more effective smart windows.
APPLIED SCIENCE AND CONVERGENCE TECHNOLOGY
(2023)
Article
Physics, Multidisciplinary
Mohd Faiyaz, Sung Soo Ha, Hojun Oh, Sukjune Choi, Do Young Noh, Hyon Chol Kang
Summary: The structural transformation of VO2 particles from insulating monoclinic to metallic rutile phase showed significant variations in transition temperature and range among individual grains, leading to a broad transition in the averaged XRD profile. Nanoparticle specimens exhibited a sharper transition compared to bulk powder specimens due to fewer grains. Understanding the intrinsic physical characteristics of VO2 requires careful analysis of bulk system data and preferably studying VO2 single crystal.
JOURNAL OF THE KOREAN PHYSICAL SOCIETY
(2021)
