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132026-01
The obvious advantages that new thin film materials now possess
Huicong Plastic Network News: A research team led by scientists from the University of Minnesota has discovered a new type of nanofilm material with the highest conductivity. The related paper was published in Nature Communications, and the study also suggests that this new material may lead to the development of smaller, faster, and more powerful electronic products, as well as more efficient solar cells. According to relevant researchers, the uniqueness of this new material is not only due to its high conductivity, but also because it has a wide bandgap, which makes it easy for light to pass through and exhibits optical transparency. In most cases, materials with wide bandgap typically have low conductivity and poor transparency. The high conductivity and wide bandgap make it an ideal material for manufacturing optically transparent conductive films, which can be used in various electronic devices, including high-power electronic devices, electronic displays, touch screens, and solar cells that require light to pass through devices, "explained Bharat Jalan, a professor of chemical engineering and materials science at the University of Minnesota and the chief researcher of the research. Currently, most electronic products use indium as a chemical element in their transparent conductors. Due to the widespread rise in indium prices over the past two decades, the cost of existing display technologies has increased. Therefore, researchers have made tremendous efforts to find alternative materials with the same or even better performance as indium based transparent conductors. In this study, researchers managed to find a solution. They developed a new transparent conductive thin film using a novel synthesis method, in which they grew BaSnO3 thin films (a combination of barium, tin, and oxygen called barium stannate) instead of using tin as a chemical precursor. This chemical precursor has unique free radical properties, which can enhance chemical reactivity and greatly improve the formation process of the metal oxide. Barium and tin are much cheaper than indium and are very abundant. Abhinav Prakash, a graduate student in Chemical Engineering and Materials Science at the University of Minnesota, said, "We were very surprised that tin chemical precursors played such an important role in the process of using them for the first time. It was a big adventure, but for us, it was a big breakthrough Jalan and Prakash stated that this new process enables them to have unprecedented control over thickness, composition, and defect concentration, which can be used to create materials and is highly suitable for many other material systems where elements are difficult to oxidize. The new process is also replicable and scalable. They further added that the superior quality of the material structure increased the defect concentration, allowing them to discover its high conductivity. The next step is to continue reducing atomic scale defects. Although this material has the highest conductivity in the same material category, besides reducing defects, we also found that it has the potential for new physics and has great room for improvement, so this is our next goal, "Jalan said.
122019-11Japan has developed transparent and strong magnetic thin film materials
Japanese researchers have developed a transparent and strong magnetic thin film material, which is expected to be used in the development of a new generation of transparent magnetic devices that can directly display fuel levels, maps, and other information on car and airplane windshields in the future. Researchers from institutions such as the Japan Institute of Electromagnetic Materials and Tohoku University recently reported in the British journal Scientific Reports that this new material is called nanoparticle material, which is made by mixing nanoscale magnetic metal particles of iron cobalt alloy and insulating material aluminum fluoride. Researchers have found that dispersing nano iron cobalt alloy in aluminum fluoride medium can simultaneously exhibit both the strong magnetism of iron cobalt alloy and the transparency of aluminum fluoride, and can display high transparency and strong magnetism at room temperature. Researchers have also found that the transparency of materials can be controlled by a magnetic field, which is a novel magneto-optical effect. Researchers say that although research on transparent magnetic materials has been widely conducted globally, this study is the first to develop transparent strong magnetic materials at room temperature, which is expected to bring revolutionary technological development to industries including electrical, magnetic, and optical equipment.
122019-11The first transparent strong magnetic thin film material has been developed
At present, although research on transparent magnetic materials has been widely carried out worldwide, this study has developed for the first time transparent strong magnetic materials under room temperature conditions, which is expected to bring revolutionary technological development to industries including electrical, magnetic, and optical equipment. Recently, Japanese researchers have developed a transparent and strong magnetic thin film material, which is expected to be used in the development of a new generation of transparent magnetic devices that can directly display fuel levels, maps, and other information on car and airplane windshields. This new material is called nanoparticle material, which is made by mixing nanoscale magnetic metal particles of iron cobalt alloy and insulating material aluminum fluoride. Researchers have found that dispersing nano iron cobalt alloy in aluminum fluoride medium can simultaneously exhibit both the strong magnetism of iron cobalt alloy and the transparency of aluminum fluoride, and can display high transparency and strong magnetism at room temperature. Researchers have also found that the transparency of materials can be controlled by a magnetic field, which is a novel magneto-optical effect.
122019-11Breakthrough progress has been made in the research of optical MOF thin film materials
HC360 Plastic News: Recently, the research team led by Zhang Jian, a researcher in the State Key Laboratory of Structural Chemistry of the Fujian Institute of Physical Structure, Chinese Academy of Sciences, successfully synthesized optical MOF film materials loaded with ultra small carbon nano lattices. The efficient and economical preparation of functional composite thin film materials is one of the challenges in the current research and development of new thin film materials, especially the preparation and application of optical functional composite thin films still need to be vigorously developed. Breakthrough progress has been made in the research of optical MOF thin film materials Breakthrough progress has been made in the research of optical MOF thin film materials Carbon nanodots (CDs) have broad application prospects in catalysis, fluorescence, sensing, and biological imaging due to their high chemical stability, low toxicity, good biocompatibility, and excellent photophysical properties. The research team innovatively utilized the significant difference in carbonization temperature between MOF materials and glucose molecules to achieve the composite of carbon nanodots and MOF materials. The carbonization temperature of typical MOF materials should exceed 500 degrees Celsius, while the carbonization temperature of glucose molecules is around 200 degrees Celsius. Therefore, MOF materials loaded with glucose molecules maintain their skeletal structure unchanged at 200 degrees Celsius, but glucose is confined to the carbon nanodots in the MOF pores by carbonization behavior, resulting in uniformly dispersed MOF materials CDs@MOF compound material. The size of carbon nanodots can be regulated by selecting MOFs with different pore structures. The prepared carbon nanodot supported MOF thin film not only has good morphology and optical transparency, but also exhibits tunable photoluminescence and photo limiting effects. This research work has achieved controllable synthesis of ultra small carbon nanodots in MOF templates and developed novel approaches CDs@MOF Composite optical limiting material, published in Angew. Chem. Int. Ed. 2017, DOI: 10.1002/anie. 201702162, German Journal of Applied Chemistry. During the same period, the research team prepared porphyrin based PIZA-1 thin film materials (Small, 2017, 1160, 4035) that can efficiently and selectively detect volatile organic compounds. They explored the effects of growth orientation, thickness, and modified substrates of MOF thin films on the properties of MOF thin films and developed a series of thin film materials with chiral separation and catalytic functions (Chem. Commun., 2017, 531470; ACSApp. Mater. Interfaces, 2017, 97259; Inorg. Chem., 2017, 563526; Nanoscale 2017, DOI: 10.1039/C7NR02284K). The research was supported by the Strategic Leading Science and Technology Project of the Chinese Academy of Sciences (Category B), the Innovation Group of "Inorganic Organic Hybrid Functional Materials" of the National Foundation of China, the National Science Fund for Distinguished Young Scholars, the Youth Project of the National Natural Science Foundation of China, the general project of the Natural Science Foundation of Fujian Province, and the Outstanding Youth Project of the State Key Laboratory of Structural Chemistry (Gu Zhigang).
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