The international research team of SUSTech published a major research result on the observation of atomic chiral superflow in the journal Nature
The team led by Xu Zhifang, associate professor of the Department of Physics at SOUTHERN UNIVERSITY of Science and Technology and founding researcher of the Institute of Quantum Science and Engineering, collaborated with Liu Wensheng, a professor at the University of Pittsburgh in the United States, and Andreas Hemmerich, a professor at the University of Hamburg in Germany, to publish "Evidence for an atomic chiral superfluid with" in the top international academic journal Nature topological excitations" research papers.
Xu Zhifang's team observed for the first time in the laboratory a global atomic chiral superflow excited by topological quasiparticles on the optical lattice of hexagonal boron nitride induced by interaction.
In this newly published paper, a different research method was experimentally used, and the band inversion technique was applied to the hexagonal boron nitride-like optical lattice. Surprisingly, simply changing the lattice geometry to a hexagonal boron nitride lattice can lead to hyper-flow states with significantly different properties.
In the experiment, atoms in the optical lattice were detected by time-flight imaging techniques spontaneously condensing at the same probability on one of the two possible energy lowest points (K-points) in the second Bloch energy belt after a long period of evolution.
Theoretical analysis points out that in this state, the entire condensate will have a global orbital angular momentum, and the atoms will form a self-sorting pattern of local phases and orbital rotation in the lattice, similar to the superlattice vortex array in the Bose-Einstein condensate.
The state spontaneously breaks the symmetry of canonical rotation and temporal inversion as a whole. Through further theoretical calculations, the research team found that the energy band excited by this chiral superflow of quasiparticles is topological and there is edge excitation. It is expected that the new Bose superfluids observed in this experiment will exhibit physical phenomena related to the quantum anomalous Hall effect in electronic condensed matter materials, although conceptually different.
Li's research group published a review article at Chemical Society Reviews
Li Chuangchuang, a professor in the Department of Chemistry of Southern University of Science and Technology, was invited to publish a study group entitled "Synthesis of natural products containing highly strained trans-fused bicyclo[3.3.0]octane: historical overview and future" in chemical society reviews Prospects" review article, a systematic summary and prospect of the total synthesis of natural products with trans 5-5 parallel rings, is the first review article in this field.
This review summarizes the total synthesis of all natural products with trans 5-5 parallel rings from a historical perspective, and makes a systematic summary and in-depth comment on relevant research work. In addition to summarizing the work before 2021, the research group also looked forward to the future of the field, which will provide important reference value for the development of the field.
Sun Xiaowei's team collaborated to develop a new type of electrodeposition QD patterning technology
Sun Xiaowei, Chair Professor of the Department of Electronic and Electrical Engineering, Southern University of Science and Technology, cooperated with Huaxing Optoelectronic Semiconductor Display Technology Co., Ltd. and the School of Information Engineering of Peking University to develop a new type of selective electrodeposition technology, which realizes the preparation of a full-color large-area quantum dot (QDs) patterned color film and high-performance QLED devices greater than 1000PPI. The relevant research results are titled "Large-Area Patterning of Full-Color Quantum Dot Arrays Beyond 1000 Pixels Per Inch by Selective Electrophoretic Deposition" and published online in the internationally renowned journal Nature Communications.
The research team used high-resolution lithography microelectrode technology combined with mild electrode deposition technology to develop a new type of QD selective electrode deposition (SEPD) patterning technology, which realized the preparation of efficient, uniform, large-area panchromatic QD patterned film on a single electrode.
Guo Chuanfei's team proposed a skin-electrode interface sensing mode
Guo Chuanfei,a professor in the Department of Materials Science and Engineering at Southern University of Science and Technology, has made progress in the research of flexible sensing technology. The team proposed the "skin-electrode interface sensing mode", which can achieve high sensitivity and high resolution tactile sensing function by simply attaching electrodes to the skin surface, providing a new idea for the field of human epidermal sensing technology and wearable electronic technology, and the related paper was published in the academic journal Nature under the title of "Skin-Electrode Iontronic Interface for Mechanosensing" Communications。
The concept of "skin-electrode interface sensing" proposed by the research team directly uses human skin as the active material of the tactile sensor. Human skin is a natural hydrogel that maintains stable ionic conductivity for a long time. Usually, the porous stratum corneum and sweat on the surface of human skin form a natural, watery porous structure.
When the electrode comes into contact with the skin, the free electrons in the electrode and the ions in the skin sweat can form an ion-electro interface, and the size of the capacitor is determined by the contact area between the electrode and the skin.
Therefore, a microstructure is introduced in the above electrode, and a change in the contact area occurs between the pressure electrode and the skin, and the pressure information can be obtained by measuring the capacitance.
Gu Meng's team has made a series of progress in the field of electrolyzing hydrogen in aquatic products
Gu Meng's team, associate professor of the Department of Materials Science and Engineering of Southern University of Science and Technology, has made a series of achievements in the field of electrolysis of water, and related papers have been published in international top journals such as the Journal of the American Chemical Society, Energy & Environmental Science, and Advanced Materials.
Gu Meng's research group, together with Xu Hu, professor of the Department of Physics of SUSTech, and Joseph S. Francisco, a professor at the University of Pennsylvania, have made important progress in the field of single-atom electrocatalytic oxygen evolution, and the relevant research results have been published online in the journal of the American Chemical Society, a top international academic journal. The paper is titled "Single Iridium Atom Doped Ni2P Catalyst for Optimal Oxygen Evolution."
At the same time, Gu Meng's research group, together with yang yang research group of professors at the University of Central Florida and Wang Guofeng of the University of Pittsburgh, published a research paper entitled "Dual-Doping and Synergism toward High-Performance Seawater Electrolysis" in the international top journal Advanced Materials.
Xiao Guozhi's team reveals a new mechanism for obesity and insulin resistance
Xiao Guozhi, a professor in the Department of Biochemistry at the School of Medicine of Southern University of Science and Technology, published a research paper titled "Pinch loss ameliorates obesity, glucose intolerance and fatty liver by modulating adipocyte apoptosis in mice" in the top journal of international diabetes.
The team collected samples of obese patients and constructed mouse models, using cellular and molecular biology methods, to reveal for the first time the important role of pinch protein in the metabolic process of adipose tissue, providing a reference for the prevention and treatment of metabolic diseases.
The research team found that the expression of the Pinch protein was higher in the adipose tissue of obese mice and obese patients. Under normal diet, no significant metabolic changes were observed in healthy mice after fat cells knocked out the Pinch gene, but down-regulating Pinch expression effectively alleviated abnormal fat accumulation and insulin resistance in obese mice caused by high-fat diets.
The study also found that Pinch gene knockout will promote apoptosis of fat cells in obese mice, and knocking out the apoptosis-related protein molecule Caspase8 in fat cells can effectively reverse the weight loss caused by Pinch gene knockout, insulin resistance relief and so on. Therefore, the Pinch protein may be used as a new target for the prevention and treatment of obesity and type II diabetes.
Lu Haizhou's research group has continuously published new progress in insulator research in the Physical Review Letters
The research group of Lu Haizhou, a professor at the Department of Physics and the Institute of Quantum Science and Engineering of southern university of science and technology, published two papers on insulator research in the Physical Review Letters. One is titled "Theory for Magnetic-Field-Driven 3D Metal-Insulator Transitions in the Quantum Limit" and the other is titled "Field-tunable one-sided higher-order topological hinge." states in Dirac semimetals" (magnetic field regulation of unilateral higher-order topological prisms in Dirac semimetals).
The first research paper documents the progress made by Lu Haizhou's research group in the field of three-dimensional metal-insulator phase transition theory driven by strong magnetic fields. In the second research paper, the research group also made a new breakthrough in high-order topological insulators.
He Feng's research group has achieved a number of research results in the field of organic solar cells
Professor He Feng's research group of the Department of Chemistry of SOUTHERN University of Science and Technology has achieved fruitful research results in multiple research directions such as device structure of organic solar cells, synthesis of polymer photovoltaic materials, and interface engineering, and has published many papers in flagship journals of materials and energy such as Advanced Materials, Advanced Functional Materials and Joule, which has promoted the development of organic solar cell research.
Wang Yijin's team reveals the mechanism of inflammatory damage caused by hepatitis E virus and potential intervention strategies
Recently, the research group of Wang Yijin, associate professor of the School of Medicine of Southern University of Science and Technology, and Pan Qiuwei, professor of Erasmus University in the Netherlands, and Wang Lin, a postdoctoral fellow of Peking University School of Basic Medicine, published an online paper entitled "Hepatitis E virus infection activations NLRP3 inflammasome antagonizing interferon" in the top medical journal "Hepatology" online response but therapeutically targetable" research paper, which delves into the mechanism of HEV activation of the inflammatory response and the potential antiviral and anti-inflammatory intervention strategies.
The study further revealed that the ORF2 capsid protein and the formation of intact viral particles are responsible for activating the inflammasome response. The study also identified NF-κB signal activation as a key upstream event in the HEV-induced NLRP3 inflammasome response.
Luo Guangfu's team has made progress on the microscopic mechanism of long-term stability of lithium metal batteries
Recently, the team of Luo Guangfu, assistant professor of the Department of Materials Science and Engineering of Southern University of Science and Technology, has made progress in lithium metal battery research. Through molecular dynamics simulations and first-principles calculations, the team revealed the microscopic mechanism of inhibiting lithium dendrite formation using nanoporous materials, as well as the long-term failure mechanism and improvement methods of the material.
The study provides new ideas for improving the long-term stability of lithium-metal batteries, and the paper was published in the Journal of Atomistic Mechanism and Long-Term Stability of Using Chlorinated Graphdiyne Film to Reduce Lithium Dendrites in Rechargeable Lithium Metal Batteries. Nano Letters.
The mechanism revealed by the institute will help further improve the long-term stability of lithium metal batteries and can be applied to other rechargeable batteries that are also plagued by metal dendrites, such as sodium-ion batteries and zinc-air batteries. The first author of the paper is Wang Lina, a doctoral student in the Department of Materials Science and Engineering of SUSTech, and the corresponding author is Luo Guangfu, who is the first unit of the paper.
Lu Haizhou's team has continuously published research results in the sub-journal of Nature
Recently, the team of Lu Haizhou, a professor at the Department of Physics and the Institute of Quantum Science and Engineering of southern university of science and technology, published two new papers on the "nonlinear Hall effect" in the sub-journal of Nature.
The first title, "Quantum theory of the nonlinear Hall effect," was published at Nature Communications. The study details the important advances made by the research team in the field of theoretical research on the nonlinear Hall effect.
The second article was a review and prospect article entitled "Nonlinear Hall effects" (nonlinear Hall effects) invited by Lu Haizhou's team to write for Nature Reviews Physics, which summarized and analyzed the important research progress on nonlinear Hall effects and their generalization in recent years, elaborated on the current problems and challenges, looked forward to future development directions and possible applications, and provided an important reference for research in related fields.
Tang Yuanyuan and Xia Yu's team made research progress in the direction of the impact mechanism of typhoons on microplastics and microplastic circles along the coast of Shenzhen
Recently, Tang Yuanyuan's team of Associate Professor of the School of Environmental Science and Engineering of Southern University of Science and Technology and Assistant Professor Xia Yu's team published a paper entitled "Typhoon-induced turbulence redistributed microplastics in coastal areas and reformed plastisphere community" in Water Research, a top journal in environmental science. Latest research results.
The research team took the coastal waters of Shenzhen as the research object and examined the effects of Typhoon Weipa in 2019 on the distribution of microplastics and the biofilm community of microplastics. Studies have shown that typhoons cause a significant increase in microplastic abundance in surface water, while the opposite trend is observed in sediments.
Although microplastics are clearly transferred to water bodies through sediment resuspension, traceability analysis also shows that exogenous inputs caused by typhoons may also be another important reason for the increase in microplastic abundance in water bodies. Interestingly, the typhoon caused the plastic microbial communities in sediments along the 190 km coastline to quickly become homogeneous and unified.
After the typhoon, the abundance of nitrogen-fixing microorganisms Bradyrhizobiaceae in the plastic microbiome increased significantly, which may further alter the nitrogen cycle in coastal ecosystems. The study provides valuable information for a more integrated and dynamic understanding of coastal microplastic pollution under the effects of global climate change.
Lu Zhouguang's research group has made new progress in the research of cathode materials for lithium-ion batteries
Recently, Lu Zhouguang, a professor in the Department of Materials Science and Engineering of Southern University of Science and Technology, made new progress in the research of ultra-high specific energy high-pressure lithium cobalt oxide cathode materials, and the relevant results were published online in Advanced Energy Materials, a top journal in the field of energy materials, with the title of "Dextran sulfate lithium as versatile binder to stabilize high-voltage LiCoO2." to 4.6 V”。
The research team designed a new high-pressure water-based binder, Dextran sulfate lithium (DSL), to replace polyvinylidene fluoride (PVDF) widely used in industry, greatly improving the structural and interfacial stability of lithium cobalt oxide materials during 4.6V high-voltage charge and discharge, as shown in Figure 1. Due to the strong interaction between the DSL binder and the lithium cobalt oxide surface, a uniform coating layer is formed in situ on the surface of lithium cobalt oxide.
The uniform DSL coating can not only effectively inhibit the irreversible phase transition of lithium cobalt oxide from O3 phase to H1-3 phase under high pressure conditions, but also greatly protect the surface of the material from being eroded by electrolyte, reduce the decomposition of cobalt elements, greatly improve the long cycle cycle of 4.6V ultra-high pressure lithium cobalt oxide, and the reversible stable capacity exceeds 200mAh/g.
Liu Junguo co-authored an article on Nature Food to illustrate the food waste situation and its environmental impact
Liu Junguo, Chair Professor of the School of Environmental Science and Engineering, Southern University of Science and Technology, and Cheng Shengkui, a researcher at the Institute of Geographic Sciences and Natural Resources Research of the Chinese Academy of Sciences, and scholars from the Ministry of Agriculture and Rural Affairs, Wuhan University, Southern University of Science and Technology, the University of Pennsylvania, the University of Southern Denmark and other units cooperated to carry out systematic research, and the results were published in the journal Nature Food.
Based on the large-scale field research of the Ministry of Agriculture and Rural Affairs on food loss in the supply chain and the Food Waste in the Household and Catering Industry by the Chinese Academy of Sciences from 2013 to 2018, combined with literature data and using material flow analysis methods, the material flow analysis characteristics of various types of food in China's food supply chain were systematically characterized, the scale and characteristics of food loss and waste and their related resource environmental impacts were analyzed, and the potential of reducing the impact on resources under different scenarios of reducing food waste was explored.
Sustech has published papers in well-known journals to reveal a new mechanism for cytokinin to regulate the development of apical curved hooks in Arabidopsis thaliana
Recently, Guo Hongwei, a 2018 undergraduate student in the 2018 undergraduate group of Guo Hongwei, Chair Professor of the School of Life Sciences of Southern University of Science and Technology, published a paper entitled "Cytokinin regulates apical hook development via the coordinated actions of EIN3/EIL1 and PIF" online as the first author transcription factors in Arabidopsis" research paper.
The paper reveals a new mechanism by which cytokinin regulates the development of apical curved hooks in Arabidopsis thaliana, and elucidates the important function of cytokinin for seedling emergence.
Arikunjiang Azezi is the first author of this article, and Hongwei Guo and Kai Jiang, assistant professor of research at the Institute of Frontier and Interdisciplinary Sciences of SUSTech, are co-corresponding authors. SUSTech is the first unit of thesis. The research has been funded by the National Natural Science Foundation of China, the Guangdong Provincial Innovation and Entrepreneurship Team, the Shenzhen Municipal Science and Technology Innovation Commission, and the Guangdong Provincial College Students Climbing Program.