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| 1 | Raman Spectroscopy and Imaging of Graphene显示文摘Graphene has many unique properties that make it an ideal material for fundamental studies as well as for potential applications.Here we review recent results on the Raman spectroscopy and imaging of graphene.We show that Raman spectroscopy and imaging can be used as a quick and unambiguous method to determine the number of graphene layers.The strong Raman signal of single layer graphene compared to graphite is explained by an interference enhancement model.We have also studied the effect of substrates,the top layer deposition,the annealing process,as well as folding(stacking order)on the physical and electronic properties of graphene.Finally,Raman spectroscopy of epitaxial graphene grown on a SiC substrate is presented and strong compressive strain on epitaxial graphene is observed.The results presented here are highly relevant to the application of graphene in nano-electronic devices and help in developing a better understanding of the physical and electronic properties of graphene. | Zhenhua Ni Yingying Wang Ting Yu Zexiang Shen | 2008 | Nano Research2008，1，4： | 51 |
| 2 | Monolayer Graphene as a Saturable Absorber in a Mode-Locked Laser显示文摘我们证明单层 graphene 的内在的性质允许它当时,为锁模式的纤维激光充当一个更有效的可饱和的吸收器与多层的 graphene 相比。单层 graphene 的吸收能与多层的 graphene,有像皱纹的缺点的 graphene,或 functionalized graphene 相比在更低的刺激紧张被浸透。单层 graphene 有 65.9% 的显著地大的调整深度,而多层的 graphene 的调整深度极大地由于 nonsaturable 吸收被减少并且散布损失。微微秒 ultrafast 激光脉搏(1.23 ps ) 能作为一个可饱和的吸收器用单层 graphene 被产生。由于 ultrafast 松驰时间,更大的调整深度和单层 graphene 的更低的散布损失,它以塑造能力,脉搏稳定性,和产量精力的脉搏比多层的 graphene 更好表现。 | Qiaoliang Bao Han Zhang Zhenhua Ni Yu Wang Lakshminarayana Polavarapu Zexiang Shen Qing-Hua Xu Dingyuan Tang Kian Ping Loh | 2011 | Nano Research2011，4，3： | 25 |
| 3 | Progress in aqueous rechargeable batteries显示文摘Over the past decades, a series of aqueous rechargeable batteries(ARBs) were explored, investigated and demonstrated. Among them,aqueous rechargeable alkali-metal ion(Li^+Na^+, K^+) batteries, aqueous rechargeable-metal ion(Zn^(2+),Mg^(2+), Ca^(2+), Al^(3+)) batteries and aqueous rechargeable hybrid batteries are standing out due to peculiar properties. In this review, we focus on the fundamental basics of these batteries, and discuss the scientific and/or technological achievements and challenges. By critically reviewing state-of-the-art technologies and the most promising results so far, we aim to analyze the benefits of ARBs and the critical issues to be addressed, and to promote better development of ARBs. | Jilei Liu Chaohe Xu Zhen Chen Shibing Ni ZeXiang Shen | 2018 | Green Energy & Environment2018，3，1： | 6 |
| 4 | In-plane coherent control of plasmon resonances for plasmonic switching and encoding显示文摘Considerable attention has been paid recently to coherent control of plasmon resonances in metadevices for potential applications in all-optical light-with-light signal modulation and image processing.Previous reports based on out-ofplane coherent control of plasmon resonances were established by modulating the position of a metadevice in standing waves.Here we show that destructive and constructive absorption can be realized in metallic nano-antennas through in-plane coherent control of plasmon resonances,which is determined by the distribution rule of electricalfield components of nano-antennas.We provide proof-of-principle demonstrations of plasmonic switching effects in a gold nanodisk monomer and dimer,and propose a plasmonic encoding strategy in a gold nanodisk chain.In-plane coherent control of plasmon resonances may open a new avenue toward promising applications in optical spectral enhancement,imaging,nanolasing,and optical communication in nanocircuits. | Liyong Jiang Tingting Yin Alexander M.Dubrovkin Zhaogang Dong Yuntian Chen Weijin Chen Joel K.W.Yang Zexiang Shen | 2019 | Light(Science & Applications)2019，8，1： | 2 |
| 5 | Effects of Crystallinity and Defects of Layered Carbon Materials on Potassium Storage:A Review and Prediction显示文摘Layered carbon materials(LCMs)are composed of basic carbon layer units,such as graphite,soft carbon,hard carbon,and graphene.While they have been widely applied in the anode of potassium-ion batteries,the potassium storage mechanisms and performances of various LCMs are isolated and difficult to relate to each other.More importantly,there is a lack of a systematic understanding of the correlation between the basic microstructural unit(crystallinity and defects)and the potas-sium storage behavior.In this review,we explored the key structural factors affecting the potassium storage in LCMs,namely,the crystallinity and defects of carbon layers,and the key parameters(L_(a),L_(c),d_(002),I_(D)/I_(G))that characterize the crystallinity and defects of different carbon materials were extracted from various databases and literature sources.A structure–property database of LCMs was thus built,and the effects of these key structural parameters on the potassium storage properties,including the capacity,the rate and the working voltage plateau,were systematically analyzed.Based on the structure–prop-erty database analysis and the guidance of thermodynamics and kinetics,a relationship between various LCMs and potas-sium storage properties was established.Finally,with the help of machine learning,the key structural parameters of layered carbon anodes were used for the first time to predict the potassium storage performance so that the large amount of research data in the database could more effectively guide the scientific research and engineering application of LCMs in the future. | Xiaoxu Liu Tianyi Ji Hai Guo Hui Wang Junqi Li Hui Liu Zexiang Shen | 2022 | Electrochemical Energy Reviews2022，5，2： | 2 |
| 6 | Valley polarization in stacked MoS2 induced by circularly polarized light显示文摘山谷 pseudospins 的操作为未来 valleytronics 是关键的。新兴的转变金属 dichalcogenides (TMD ) 为在自由,包括的真实旋转,山谷 pseudospin,和层 pseudospin 的量度之中探索相互影响提供新可能性。例如,联合的纺纱山谷导致有详细规格的电子在旋转的山谷依赖者通报二色性(起来或下面) 能被 chiral 有选择地激动光,在很少层 TMD 在单层 TMD 抽,进一步跳跃的夹层影响联合的纺纱山谷。除了山谷和层 pseudospins,这里,我们建议 freedomstacking pseudospinand 的新度证明新现象相关到这新叠自由不那样要求申请外部电或磁场。我们调查了 chemical-vapor-deposition-grown trilayer 瞬间 2(AAA,纬纱, AAB,骆驼毛的织物,和 3R ) 的所有可能的叠配置。尽管 AAA,骆驼毛的织物, 3R 叠比在单层样品, AAB (纬纱) 叠展出二座不同山峰的与山谷极化的更低的度拥有一座唯一的山峰,类似于在单层瞬间 2 观察了那的和另外的 unpolarized 在更低的精力达到顶点。我们的调查结果为未来 valleytronics 提供山谷量控制的更完全的理解。 | Juan Xia Xingli Wang Beng Kang Tay Shoushun Chen Zheng Liu Jiaxu Yan Zexiang Shen | 2017 | Nano Research2017，10，5： | 2 |
| 7 | Influences of graphene oxide support on the electrochemical performances of graphene oxide-MnO2 nanocomposites显示文摘 | Huanping Yang Jian Jiang Weiwei Zhou Linfei Lai Lifei Xi Yeng Lam Zexiang Shen Bahareh Khezri Ting Yu | 2011 | Nanoscale Research Letters2011，，1： | 1 |
| 8 | Inspired by nature:Self-fractal cobalt sulfate composite electrode for sodium ion storage显示文摘Generally,the metal sulfide itself has poor conductivity,and the volume expansion occurs when it is converted with sodium,which will destroy the integrity of the electrode structure,resulting in poor cycle performance and rate performance.To solve the problems of low initial coulombic efficiency(ICE)and volume expansion of metal compounds used as anodes in sodium-ion batteries(SIBs).Inspired by nature,the CoSO_(4)/hard carbon/graphene(CHG)fractal structure electrode was designed.Self-fractal structures with electron/ion transport channels and high strain tolerance proved to be an effective strategy to overcome these challenges.The fractal dimension(D)is measured by synchronous Small Angle X-ray scattering,and the D remains stable during charging and discharging.The fractal CHG also showed excellent electrochemical performance,especially 97.4%ICE.Theoretical calculation shows that self-fractal CHG can promote the formation of a thin solid electrolyte interface(SEI).Synchrotron radiation absorption spectrum proved the reaction mechanism of CHG.This study not only proves that cobalt sulfate is a feasible strategy for developing high-performance SIBs anodes but also provides an advanced method for measuring the fractal dimension of energy storage electrode materials. | Man Zhang Xiaoxu Liu Jjiangdong Gu Hui Wang Hui Liu Zexiang Shen | 2023 | Chinese Chemical Letters2023，34，12： | 0 |
| 9 | Theoretical Study on Structural Stability of Alloy Cages:A Case of Silicon-Doped Heterofullerenes显示文摘Structural stability and Si-substitution pattern in fullerene cage of C_(60−n)Sin are thoroughly investigated by integrating density functional calculations with a colorbond graph(CBG)model.We find that the parameterized CBG model with genetic algorithms can efficiently scan the large configuration space of alloy and therefore identify the low-energy region within the first-principles accuracy.Low-energy(stable)structures of C_(60−n)Sin in carbon-rich region(1≤n≤30)were identified and the silicon atoms are found to tend to aggregate in the fullerene cage.The mixing energy of these low-energy structures is ~35 meV/atom and insensitive to the Si concentration.We expect that these alloy fullerene cages can be synthesized experimentally at elevated temperatures. | Xiaofeng Fan Zexuan Zhu Lei Liu Zexiang Shen Jer-Lai Kuo | 2010 | Communications in Computational Physics2010，8，7： | 0 |
| 10 | A novel material for passive NO_(x) adsorber:Ce-based BEA zeolite显示文摘Passive NO_(x) adsorbers(PNAs)were proposed to address the NO_(x) emissions during the cold start phase.Here we show a novel Ce-based BEA zeolite,as a noble-metal-free passive NO_(x)adsorber.The NO_(x) adsorption capacity of Ce/BEA reaches 36μmol/g in the feed gas close to realistic exhaust conditions,and the NO_(x) desorption temperature,which is around 290℃,is ideal for diesel exhaust after-treatment systems.Ce/BEA also behaves notable stability of high temperature CO exposure conditions.Multiple characterizations were performed to explore the NO_(x) adsorption chemistry of Ce/BEA.The Ce(Ⅳ)species in the BEA zeolite serves as the active center for NO_(x) adsorption.The bidentate nitrate species is responsible for the observed NO_(x) storage capacity,and the active oxygen around Ce(Ⅳ)plays a critical role in its formation.Considering the significantly better cost efficiency of Ce compared to Pd,Ce/BEA presents an enormous potential for the PNA applications and provides a novel formulation for the noblemetal choice of PNA materials. | Yan Wu Jun Wang Zexiang Chen Yi Zhu Minghui Yu Chen Wang Yanping Zhai Jianqiang Wang Gurong Shen Meiqing Shen | 2023 | Journal of Rare Earths2023，41，8： | 0 |
| 11 | Rational design and synthesis of nanosheets self-assembled hierarchical flower-ball-like CuFeS_(2)for boosted wide temperature sodium-ion batteries显示文摘Nano-structure designs with conductive networks have been demonstrated as an efficient strategy to boost sodium storage properties for transition metal sulfides.Herein,an exquisite nanosheets self-assembled hierarchical flower-ball-like CuFeS_(2)embedded into the reduced graphene oxide(RGO)nanosheet matrix(F-CuFeS_(2)@RGO)is fabricated via a concise two-step solvothermal method.Such a well-designed architecture affords increased active reaction interfaces and enhanced mixed ionic/electronic conductivity.Meanwhile,the external RGO matrix can effectively alleviate the volume expansion and create a stable structure during long cycles.As a result,the composite material exhibits a high reversible capacity of 559 mAh·g^(-1)at 0.1 A·g^(-1),a superior rate capability of 455 mAh·g^(-1)at 5 A·g^(-1)and excellent cyclic stability with 96%capacity retention after 4800 cycles at 5 A·g^(-1),among the best in the state-of-the-art transition metal sulfide anodes.Especially,F-CuFeS_(2)@RGO delivers outstanding low-temperature performances with a high capacity retention of 100%and 91%at-20 and-40℃,respectively,over 200 cycles.The proposed hierarchical structure fabrication paves a new direction in the design of high-performance electrodes for all-temperature energy storage applications. | Ge Sun Hezhe Lin Ruiyuan Tian Zhixuan Wei Xiaoqi Wang Xu Jin Shiyu Yao Gang Chen Zexiang Shen Fei Du | 2023 | Nano Research2023，16，7： | 0 |
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