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| 1 | Non-contact cylindrical rotating triboelectric nanogenerator for harvesting kinetic energy from hydraulics显示文摘Hydraulics provide a unique and widely existed mechanical energy source around us,such as in water or oil pipes,and sewers.Here,a non-contact cylindrical rotating triboelectric nanogenerator(TENG)was developed to harvest the mechanical energy from water flows.Operation of the TENG was based on the non-contact free-rotating between a curved Cu foil and a flexible nanostructured fluorinated ethylene propylene(FEP)polymer film.The free-standing distance between two rotating interfaces avoided abrading of electrode materials.The TENG was able to effectively convert mechanical energy of the water flow into electricity.When driven by water flow,the output voltage and current of the TENG reached 1,670 V and 13.4 uA,respectively.Without any energy storage component,the produced electricity could instantaneously power 12 white light emitting diodes(LEDs)bulbs and a digital timer.This non-contact rotating TENG would provide new opportunities for harvesting energy from many types of hydraulics as a self-sustainable power source for sensing,detection,and protection. | Nan Zhang Cheng Qin Tianxing Feng Jun Li Zhirui Yang Xiupeng Sun Erjun Liang Yanchao Mao Xudong Wang | 2020 | Nano Research2020，13，7： | 4 |
| 2 | Effect of Bi on graphite morphology and mechanical properties of heavy section ductile cast iron显示文摘To improve the mechanical properties of heavy section ductile cast iron, bismuth(Bi) was introduced into the iron. Five castings with different Bi content from 0 to 0.014 wt.% were prepared; and four positions in the casting from the edge to the center, with different solidifi cation cooling rates, were chosen for microstructure observation and mechanical properties test. The effect of the Bi content on the graphite morphology and mechanical properties of heavy section ductile cast iron were investigated. Results show that the tensile strength, elongation and impact toughness at different positions in the fi ve castings decrease with a decrease in cooling rate. With an increase in Bi content, the graphite morphology and the mechanical properties at the same position are improved, and the improvement of mechanical properties is obvious when the Bi content is no higher than 0.011wt.%. But when the Bi content is further increased to 0.014wt.%, the improvement of mechanical properties is not obvious due to the increase of chunky graphite number and the aggregation of chunky graphite. With an increase in Bi content, the tensile fracture mechanism is changed from brittle to mixture ductile-brittle fracture. | Song Liang Guo Erjun Tan Changlong | 2014 | China Foundry2014，11，2： | 4 |
| 3 | Negative thermal expansion: Mechanisms and materials显示文摘Negative thermal expansion(NTE)of materials is an intriguing phenomenon challenging the concept of traditional lattice dynamics and of importance for a variety of applications.Progresses in this field develop markedly and update continuously our knowledge on the NTE behavior of materials.In this article,we review the most recent understandings on the underlying mechanisms(anharmonic phonon vibration,magnetovolume effect,ferroelectrorestriction and charge transfer)of thermal shrinkage and the development of NTE materials under each mechanism from both the theoretical and experimental aspects.Besides the low frequency optical phonons which are usually accepted as the origins of NTE in framework structures,NTE driven by acoustic phonons and the interplay between anisotropic elasticity and phonons are stressed.Based on the data documented,some problems affecting applications of NTE materials are discussed and strategies for discovering and design novel framework structured NET materials are also presented. | Erjun Liang Qiang Sun Huanli Yuan Jiaqi Wang Gaojie Zeng Qilong Gao | 2021 | Frontiers of physics2021，16，5： | 3 |
| 4 | Integrated histopathological,lipidomic,and metabolomic profiles reveal mink is a useful animal model to mimic the pathogenicity of severe COVID-19 patients显示文摘Severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)is transmitted on mink farms between minks and humans in many countries.However,the systemic pathological features of SARS-CoV-2-infected minks are mostly unknown.Here,we demonstrated that minks were largely permissive to SARS-CoV-2,characterized by severe and diffuse alveolar damage,and lasted at least 14 days post inoculation(dpi).We first reported that infected minks displayed multiple organ-system lesions accompanied by an increased inflammatory response and widespread viral distribution in the cardiovascular,hepatobiliary,urinary,endocrine,digestive,and immune systems.The viral protein partially co-localized with activated Mac-2+macrophages throughout the body.Moreover,we first found that the alterations in lipids and metabolites were correlated with the histological lesions in infected minks,especially at 6 dpi,and were similar to that of patients with severe and fatal COVID-19.Particularly,altered metabolic pathways,abnormal digestion,and absorption of vitamins,lipids,cholesterol,steroids,amino acids,and proteins,consistent with hepatic dysfunction,highlight metabolic and immune dysregulation.Enriched kynurenine in infected minks contributed to significant activation of the kynurenine pathway and was related to macrophage activation.Melatonin,which has significant anti-inflammatory and immunomodulating effects,was significantly downregulated at 6 dpi and displayed potential as a targeted medicine.Our data first illustrate systematic analyses of infected minks to recapitulate those observations in severe and fetal COVID-19 patients,delineating a useful animal model to mimic SARS-CoV-2-induced systematic and severe pathophysiological features and provide a reliable tool for the development of effective and targeted treatment strategies,vaccine research,and potential biomarkers. | Zhiqi Song Linlin Bao Wei Deng Jiangning Liu Erjun Ren Qi Lv Mingya Liu Feifei Qi Ting Chen Ran Deng Fengdi Li Yunpeng Liu Qiang Wei Hong Gao Pin Yu Yunlin Han Wenjie Zhao Junjun Zheng Xujian Liang Fuhe Yang Chuan Qin | 2022 | Signal Transduction and Targeted Therapy2022，7，2： | 2 |
| 5 | Microstructure and wear resistance of TaC reinforced Ni-based coating by laser cladding 显示文摘 | Chao Mingju Wang Wenli Liang Erjun | 2008 | Surface and Coatings Technology2008，202，10： | 1 |
| 6 | Microstructure and wear resistance of TaC reinforced Ni-based coating by laser cladding 显示文摘 | CHAO MINGJU WANG WENLI LIANG ERJUN | 2008 | Surface and Coatings Technology2008，，202： | 1 |
| 7 | Investigation on the microstructure and cracking susceptibility of laser-clad V2O5/NiCrBSiC alloy coatings 显示文摘 | Wang Dongsheng Liang Erjun Chao Mingju | 2008 | Surf Coat Techn2008，202，： | 1 |
| 8 | Textured BaTi2O5 ceramic synthesized by laser rapid solidification method and its dielectric properties显示文摘 | Junji Zhang Jumei Yu Mingju Chao Erjun Liang Mingyu Li Dechuan Li | 2012 | Journal of Materials Science2012，，3： | 1 |
| 9 | Layered growth of aligned carbon nanotube arrays by pyrolysis显示文摘 | Zhang Hongrui Liang Erjun Ding Pei | 2003 | Physica B2003，337，： | 1 |
| 10 | Microstructure , and wear resistance of TaC reinforced Ni-based coating by laser cladding显示文摘 | Chao Mingju Wang Wenli Liang Erjun | 2008 | Surf Coat Techn2008，202，： | 1 |
| 11 | A new isotropic negative thermal expansion material of CaSnF_(6)with facile and low-cost synthesis显示文摘Double ReO_(3)-type fluorides have a great interest in the field of negative thermal expansion(NTE)and luminescent materials.However,their application is limited by the scarcity of quantity,expensive raw materials,and harsh preparation conditions.In this work we have found a new NTE material,CaSnF_(6),by applying the concept of the average atomic volume.More importantly,different from the previous solid-phase sintering and direct fluorination methods,the nano CaSnF6 has been synthesized for the first time by solvothermal method.The results of X-ray diffraction(XRD)and Raman spectroscopy show that a phase transition occurs from rhombohedral(R3)to cubic(Fm3m)structure at about 200 K,and a strong isotropic NTE(αv=−15.78×10^(−6)K^(−1))appears in the cubic phase.Lattice dynamics calculations from first-principles illustrate that the NTE is due to the transverse vibration of fluorine atoms excited by low-frequency phonons.This work not only broadens the NTE family of fluorides,but also provides a new facile and low-cost fabricati on method for the preparation of NTE fluorides. | Qilong Gao Sen Zhang Yixin Jiao Yongqiang Qiao Andrea Sanson Qiang Sun Xinwei Shi Erjun Liang Jun Chen | 2023 | Nano Research2023，16，4： | 1 |
| 12 | Large negative thermal expansion in GdFe(CN)_(6) driven by unusual low-frequency modes显示文摘Understanding the negative thermal expansion(NTE)mechanism is of great importance.In this work,we consider the new NTE compound Gd Fe(CN)_(6)(α_(v)=-34.2×10^(-6)K^(-1))as a case study to investigate the NTE mechanism from the perspective of the lattice vibrational dynamics.The atomic mean-square displacements suggest that the NTE of Gd Fe(CN)_(6)comes from the strong tension effect induced by the transverse vibrations of the atomic-Fe-C≡N-Gd-linkages,with the largest contribution given by N atoms.Lattice dynamics calculations show that three low-frequency optical modes at about 50 cm^(-1)show the largest negative Grüneisen parameters thus providing the largest contribution to the NTE.The existence of these unusual low-frequency vibrational modes can be ascribed to the presence of GdN_(6)trigonal prisms in the framework structure of Gd Fe(CN)_(6). | Qilong Gao Yixin Jiao Andrea Sanson Erjun Liang Qiang Sun | 2023 | Chinese Chemical Letters2023，34，5： | 0 |
| 13 | Preparation and Properties of Silver Colloids Produced by Laser-Induced Reduction of Silver Nitrate显示文摘Silver colloids have been prapared by laser-induced reduction of silver nitrate.The.properties of the colloids were studied with transmission electron microscopy,visible-ultraviolet absorption and Raman spectroscopy.We Rnd that the growth of the silver grains is dependent on the laser illumination time.Two characteristic absorption bands of the colloids are located near 390 and 560nm,respectively.Not only are the silver colloids much cleaner than those prepared by chemical reduction methods,but also surface enhanced Raman scattering active.The method may be of interests for ultrafine particle studies as well. | LIANG Erjun WANG Yuntao WANG Yujin HAO Qingxiu ZHANG Pengxiang | 1992 | Chinese Physics Letters1992，9，2： | 0 |
| 14 | Engineering Vacancy-Atom Ensembles to Boost Catalytic Activity toward Hydrogen Evolution显示文摘The dissociation of water is the rate-determining step of several energy-relating reactions due to high energy barrier in homolysis of H-O bond.Herein,engineering vacancy-atom ensembles via injecting oxygen vacancy(V O)into single facet-exposed TiO_(2)-Pd catalyst to form V_(O)-Pd ensemble is proposed and implemented.The outstanding activity of as-prepared catalyst,1.5-PdTV_(O),toward water dissociation is established with a turnover frequency of 240 min^(−1) in ammonia borane hydrolysis at 298 K.Density functional theory simulation suggests that the V_(O)-Pd ensemble is responsible for the high intrinsic catalytic activity.Water molecules tend to be dissociated on V_(O) sites and ammonia borane molecules on Pd atoms.Those H atoms from water dissociation on V_(O) combine with H atoms from ammonia borane on Pd atoms to generate H_(2).This insights into engineering vacancy-atom ensembles catalysis provide a new avenue to design catalytic materials for important energy chemical reactions. | Ruofan Shen Yanyan Liu Hao Wen Xianli Wu Zhikun Peng Sehrish Mehdi Tao Liu Huanhuan Zhang Shuyan Guan Erjun Liang Baojun Li | 2023 | Energy & Environmental Materials2023，6，1： | 0 |
| 15 | Enhanced charge separation by continuous homojunction with spatially separated redox sites for hydrogen evolution显示文摘Photocatalytic hydrogen generation represents a promising strategy for the establishment of a sustainable and environmentally friendly energy reservoir.However,the current solar-to-hydrogen conversion efficiency is not yet sufficient for practical hydrogen production,highlighting the need for further research and development.Here,we report the synthesis of a Sn-doped TiO_(2)continuous homojunction hollow sphere,achieved through controlled calcination time.The incorporation of a gradient doping profile has been demonstrated to generate a gradient in the band edge energy,facilitating carrier orientation migration.Furthermore,the hollow sphere’s outer and inner sides provide spatially separated reaction sites allowing for the separate acceptance of holes and electrons,which enables the rapid utilization of carriers after separation.As a result,the hollow sphere TiO_(2)with gradient Sn doping exhibits a significantly increased hydrogen production rate of 20.1 mmol·g^(−1)·h^(−1).This study offers a compelling and effective approach to the designing and fabricating highly efficient nanostructured photocatalysts for solar energy conversion applications. | Mingyuan Yu Tongyu Wang Chengxi Huang Fang Wu Xuan Liu Hailing Huo Hanwen Jian Zikun Liang Jingjing Ma Erjun Kan Ang Li | 2023 | Nano Research2023，16，10： | 0 |
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