|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | 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 |
| 2 | 二维材料最新研究进展显示文摘Research on two-dimensional(2D) materials has been explosively increasing in last seventeen years in varying subjects including condensed matter physics, electronic engineering, materials science, and chemistry since the mechanical exfoliation of graphene in 2004. Starting from graphene, 2D materials now have become a big family with numerous members and diverse categories. The unique structural features and physicochemical properties of 2D materials make them one class of the most appealing candidates for a wide range of potential applications. In particular, we have seen some major breakthroughs made in the field of 2D materials in last five years not only in developing novel synthetic methods and exploring new structures/properties but also in identifying innovative applications and pushing forward commercialisation. In this review, we provide a critical summary on the recent progress made in the field of 2D materials with a particular focus on last five years. After a brief backgroundintroduction, we first discuss the major synthetic methods for 2D materials, including the mechanical exfoliation, liquid exfoliation, vapor phase deposition, and wet-chemical synthesis as well as phase engineering of 2D materials belonging to the field of phase engineering of nanomaterials(PEN). We then introduce the superconducting/optical/magnetic properties and chirality of 2D materials along with newly emerging magic angle 2D superlattices. Following that, the promising applications of 2D materials in electronics, optoelectronics, catalysis, energy storage, solar cells, biomedicine, sensors, environments, etc. are described sequentially. Thereafter, we present the theoretic calculations and simulations of 2D materials. Finally, after concluding the current progress, we provide some personal discussions on the existing challenges and future outlooks in this rapidly developing field. | 常诚 陈伟 陈也 陈永华 陈雨 丁峰 樊春海 范红金 范战西 龚成 宫勇吉 何其远 洪勋 胡晟 胡伟达 黄维 黄元 季威 李德慧 李连忠 李强 林立 凌崇益 刘鸣华 刘楠 刘庄 Kian Ping Loh 马建民 缪峰 彭海琳 邵明飞 宋礼 苏邵 孙硕 谭超良 唐智勇 王定胜 王欢 王金兰 王欣 王欣然 Andrew T.S.Wee 魏钟鸣 吴宇恩 吴忠帅 熊杰 熊启华 徐伟高 尹鹏 曾海波 曾志远 翟天佑 张晗 张辉 张其春 张铁锐 张翔 赵立东 赵美廷 赵伟杰 赵运宣 周凯歌 周兴 周喻 朱宏伟 张华 刘忠范 | 2021 | 物理化学学报2021，37，12： | 9 |
| 3 | Diffraction-limited imaging with monolayer 2D material-based ultrathin flat lenses显示文摘Ultrathin flat optics allow control of light at the subwavelength scale that is unmatched by traditional refractive optics.To approach the atomically thin limit,the use of 2D materials is an attractive possibility due to their high refractive indices.However,achievement of diffraction-limited focusing and imaging is challenged by their thickness-limited spatial resolution and focusing efficiency.Here we report a universal method to transform 2D monolayers into ultrathin flat lenses.Femtosecond laser direct writing was applied to generate local scattering media inside a monolayer,which overcomes the longstanding challenge of obtaining sufficient phase or amplitude modulation in atomically thin 2D materials.We achieved highly efficient 3D focusing with subwavelength resolution and diffractionlimited imaging.The high focusing performance even allows diffraction-limited imaging at different focal positions with varying magnifications.Our work paves the way for downscaling of optical devices using 2D materials and reports an unprecedented approach for fabricating ultrathin imaging devices. | Han Lin Zai-Quan Xu Guiyuan Cao Yupeng Zhang Jiadong Zhou Ziyu Wang Zhichen Wan Zheng Liu Kian Ping Loh Cheng-Wei Qiu Qiaoliang Bao Baohua Jia | 2020 | Light(Science & Applications)2020，9，1： | 9 |
| 4 | Structuring Nonlinear Wavefront Emitted from Monolayer Transition-Metal Dichalcogenides显示文摘The growing demand for tailored nonlinearity calls for a structure with unusual phase discontinuity that allows the realization of nonlinear optical chirality,holographic imaging,and nonlinear wavefront control.Transition-metal dichalcogenide(TMDC)monolayers offer giant optical nonlinearity within a few-angstrom thickness,but limitations in optical absorption and domain size impose restriction on wavefront control of nonlinear emissions using classical light sources.In contrast,noble metal-based plasmonic nanosieves support giant field enhancements and precise nonlinear phase control,with hundred-nanometer pixellevel resolution;however,they suffer from intrinsically weak nonlinear susceptibility.Here,we report a multifunctional nonlinear interface by integrating TMDC monolayers with plasmonic nanosieves,yielding drastically different nonlinear functionalities that cannot be accessed by either constituent.Such a hybrid nonlinear interface allows second-harmonic(SH)orbital angular momentum(OAM)generation,beam steering,versatile polarization control,and holograms,with an effective SH nonlinearityχ^((2))of~25 nm/V.This designer platform synergizes the TMDC monolayer and plasmonic nanosieves to empower tunable geometric phases and large field enhancement,paving the way toward multifunctional and ultracompact nonlinear optical devices. | Xuanmiao Hong Guangwei Hu Wenchao Zhao Kai Wang Shang Sun Rui Zhu Jing Wu Weiwei Liu Kian Ping Loh Andrew Thye Shen Wee Bing Wang Andrea Alù Cheng-Wei Qiu Peixiang Lu | 2020 | Research2020，，1： | 5 |
| 5 | Intrinsic polarization coupling in 2Dα‐In_(2)Se_(3)toward artificial synapse with multimode operations显示文摘Emulation of advanced synaptic functions of the human brain with electronic devices contributes an important step toward constructing high‐efficiency neuromorphic systems.Ferroelectric materials are promising candidates as synaptic weight elements in neural network hardware due to their controllable polarization states.However,the increased depolarization field at the na-noscale and the complex fabrication process of the traditional ferroelectric materials hamper the development of high‐density,low‐power,and highly sensitive synaptic devices.Here,we report the implementation of two‐dimensional(2D)ferroelectricα‐In_(2)Se_(3)as an active channel material to emulate typical synaptic functions.Theα‐In_(2)Se_(3)‐based synaptic device fea-tures multimode operations,enabled by the coupled ferroelectric polarization under various voltage pulses applied at both drain and gate terminals.Moreover,the energy consumption can be reduced to~1 pJ by using high‐κdielectric(Al2O3).The successful control of ferroelectric polarizations inα‐In_(2)Se_(3)and its application in artificial synapses are expected to inspire the implementation of 2D ferroelectric materials for future neuromorphic systems. | Jing Gao Yue Zheng Wei Yu Yanan Wang Tengyu Jin Xuan Pan Kian Ping Loh Wei Chen | 2021 | SmartMat2021，2，1： | 4 |
| 6 | Intercalated phases of transition metal dichalcogenides显示文摘Two‐dimensional transition metal dichalcogenides(TMDs)play host to a wide range of novel topological states,such as quantum spin Hall insulators,superconductors,and Weyl semimetals.The rich polymorphism in TMDs suggests that phase engineering can be used to switch between different charge order states.Intercalation of atoms or molecules into the van der Waals gap of TMDs has emerged as a powerful approach to modify the properties of the material,leading to phase transition or the formation of substoichiometric phases via compositional tuning,thus broadening the electronic and optical landscape of these materials for a wide range of applications.Here,we review the current efforts in the preparation of intercalated TMD.The challenges and opportunities for intercalated TMDs to create a new device paradigm for material science are discussed. | Ziying Wang Runlai Li Chenliang Su Kian Ping Loh | 2020 | SmartMat2020，1，1： | 2 |
| 7 | From Micropores to Ultra-micropores inside Hard Carbon: Toward Enhanced Capacity in Room-/ Low-Temperature Sodium-Ion Storage显示文摘Pore structure of hard carbon has a fundamental influence on the electrochemical properties in sodium-ion batteries(SIBs).Ultra-micropores(<0.5 nm)of hard carbon can function as ionic sieves to reduce the diffusion of slovated Na+but allow the entrance of naked Na^(+) into the pores,which can reduce the interficial contact between the electrolyte and the inner pores without sacrificing the fast diffusion kinetics.Herein,a molten diffusion-carbonization method is proposed to transform the micropores(>1 nm)inside carbon into ultra-micropores(<0.5 nm).Consequently,the designed carbon anode displays an enhanced capacity of 346 mAh g^(−1) at 30 mA g^(−1) with a high ICE value of~80.6%and most of the capacity(~90%)is below 1 V.Moreover,the high-loading electrode(~19 mg cm^(−2))exhibits a good temperature endurance with a high areal capacity of 6.14 mAh cm^(−2) at 25℃ and 5.32 mAh cm^(−2) at −20℃.Based on the in situ X-ray diffraction and ex situ solid-state nuclear magnetic resonance results,the designed ultra-micropores provide the extra Na+storage sites,which mainly contributes to the enhanced capacity.This proposed strategy shows a good potential for the development of high-performance SIBs. | Jinlin Yang Xiaowei Wang Wenrui Dai Xu Lian Xinhang Cui Weichao Zhang Kexin Zhang Ming Lin Ruqiang Zou Kian Ping Loh Quan-Hong Yang Wei Chen | 2021 | Nano-Micro Letters2021，13，6： | 2 |
| 8 | Biosensing Properties of Diamond and Carbon Nanotubes 显示文摘 | Wei Choong Poh Kian Ping Loh | 2004 | Langmuir2004，20，： | 1 |
| 9 | Novel iridium complexes as high-efficiency yellow and red phosphorescent light emitters for organic light-emitting diodes显示文摘 | Jun Hong Yao Changgua Zhen Kian Ping Loh | 2008 | Tetrahedron2008，64，10： | 1 |
| 10 | Graphene oxide as a chemically tunable platform for optical applications 显示文摘 | Kian Ping Loh Bao Qiaoliang Goki eda | 2010 | Nature Chemistry2010，2，： | 1 |
| 11 | Fluorinated Graphene for Promoting Neuro‐Induction of Stem Cells显示文摘 | Yu Wang Wong Cheng Lee Kiran Kumar Manga Priscilla Kailian Ang Jiong Lu Yan Peng Liu Chwee Teck Lim Kian Ping Loh | 2012 | Adv Mater2012，，31： | 1 |
| 12 | The chemistry of graphene显示文摘 | KIAN PING LOH QIAO LIANGBAO PRISCILLA KAILIANANG | | 0，，02： | 1 |
| 13 | Conductive polymer-modified boron-doped diamond for DNA hybridization analysis 显示文摘 | Gu Huiru Su Xiaodi Kian Ping Loh | 2004 | Chem Phys Lett2004，388，4： | 1 |
| 14 | Removal of microcystin-LR and microcystin-RR by graphene oxide: Adsorption and kinetic experiments显示文摘 | Shruti Pavagadhi Ai Ling Lena Tang Muthuswamy Sathishkumar Kian Ping Loh Rajasekhar Balasubramanian | 2013 | Water Research2013，，13： | 1 |
| 15 | Graphene photonics, plasmonics, and broadband optoelectronic devices 显示文摘 | Qiaoliang Bao Kian Ping Loh | 2012 | ACS Nano Review2012，6，5： | 1 |
| 16 | Self-cross-linked arrays enabled flexible mechanical sensors for monitoring the body tremor显示文摘Thin-film electronics played an important role in flexible healthcare sensor applications.The common status of their constituent blocks are solid film and network structures.However,the solid film could only sustain bend in a narrow range due to cracks,and the network structure decreased the sensitivity of flexion sensors due to the strong interactions between nanowires.New materials and technologies are urgently required for flexible sensing electronics,to produce the reliable data for assessment of the human body.Here,we report on a novel three-dimensional(3D)carbon nanorods array(CNA)that is characterized as vertically aligned nanorods and self-cross-linked junctions.We also demonstrate the CNA-based flexible healthcare sensors in monitoring the Parkinsonian tremors.Comparing with two-dimensional(2D)carbon nanotube networks and solid thin films,such self-cross-linked geometries are highly resistant to crack and fragmentation under strain.In the meantime,it shows high sensitivity and good stability(~10,000 times)to detect the flexions.These CNA-based flexible devices are capable of recording low-frequency vibrations(<6 Hz)and make it excellent to monitor the rest tremor of the human body,which is an initial symptom of Parkinson’s disease.The 3D self-cross-linked CNA film shows great potential in the fabrication of cost-effective and durable flexible sensors for early diagnosis of disease by monitoring the health-related rest tremors. | Xuewen Wang Wei Fu Guanhui Gao Mandeep Singh Mehay Lu Zheng Hong Wang Wu Zhao Kian Ping Loh Ting Zhang Wei Huang Zheng Liu | 2020 | npj Flexible Electronics2020，4，1： | 0 |
| 17 | Ultrahigh Loading Copper Single Atom Catalyst for Palladium-free Wacker Oxidation显示文摘Wacker oxidation is an industry-adopted process to transform olefins into value-added epoxides and carbonyls.However,traditional Wacker oxidation involves the use of homogeneous palladium and copper catalysts for the olefin addition and reductive elimination.Here,we demonstrated an ultrahigh loading Cu single atom catalyst(14%Cu,mass fraction)for the palladium-free Wacker oxidation of 4-vinylanisole into the corresponding ketone with N-methylhydroxylamine hydrochloride as an additive under mild conditions.Mechanistic studies by ^(18)O and deuterium isotope labelling revealed a hydrogen shift mechanism in this palladium-free process using N-methylhydroxylamine hydrochloride as the oxygen source.The reaction scope can be further extended to Kucherov oxidation.Our study paves the way to replace noble metal catalysts in the traditional homogeneous processes with single atom catalysts. | SONG Jingting LIU Jia LOH Kian Ping CHEN Zhongxin | 2022 | Chemical Research in Chinese Universities2022，38，5： | 0 |
| 18 | Engineering Single Atom Catalysts for Flow Production:From Catalyst Design to Reactor Understandings显示文摘CONSPECTUS:In heterogeneous catalysis,the long-standing challenge isto achieve extremely high activity and chemoselectivity in liquid-phaseorganic transformations comparable to that of homogeneous or enzymaticprocesses.Single-atom catalysts(SACs)with atomically precise coordinationare developed with the objectives to mimic the homogeneous pathwaysbut face stability issues due to metal leaching or clustering.Additionally,thepractical application of SACs in chemical production is hampered by thelack of standard preparation protocols and low conversion using laboratorybatch reactors.This Account focuses on our recent studies in both catalyst design andreactor-level engineering for the flow synthesis of fine chemicals via SACs.At the catalyst and reaction level,we will discuss the intrinsic mechanismthat controls reactivity and chemoselectivity in the SAC-catalyzed processand highlight examples where SACs outperform other catalytic approaches.Specifically,we reported the SAC-mediated preparationand late-stage functionalization of pharmaceutical drugs,including lonidamine,Tamiflu,cavosonstat,indomethacin,and many othersby chemoselective transformations in a sequential or multicomponent manner.The ability of ultrahigh loading SACs in providing amultisite pathway for organic transformations involving two or more reactants is highlighted and contrasted with the single-sitepathway in conventional SACs.Molecular-level understanding on the dynamic catalytic cycle obtained using operando X-rayabsorption spectroscopies provides guidance for the design of more effective and leach resistant SACs.This also calls for thetransformation of laboratory powder-based catalysts into industrially viable monolithic catalysts via formulation to further enhancethe leach resistance.At the reactor level,we will highlight the importance of continuous-flow techniques in maximizing productivityand simplifying process transfer from laboratory to commercial production.Particularly,we discuss the use of fuel cell-type flowstacks for quantitative production of fine chemicals,including the synthesis of multifunctional anilines at a 5.8 g h−1 productivityusing a Pt SAC module(3.2 mg Pt).Insight into multiscale reactor processes,for instance,the fluid diffusion kinetics,heat transfer,and influence of porosity and the gas−liquid−solid interface are provided by computational fluidic dynamics calculations as well asexperimental techniques.In many cases,catalytic processes are more limited by mass diffusion than the intrinsic activity of thecatalyst,calling for process optimization and engineering at the reactor level to enhance the productivity.Finally,we also identifytechnical barriers that need to be overcome in SAC research and offer our perspective on standardized and scalable protocols formass production,the production cost analysis of typical SACs,high-throughput screening platforms,and novel flow reactor designsinvolving photochemical and electrochemical reactions for up-scaling chemical production by SACs. | Zhongxin Chen Jia Liu Kian Ping Loh | 2023 | Accounts of Materials Research2023，4，1： | 0 |
| 19 | Tuning photoresponse of graphene-black phosphorus heterostructure by electrostatic gating and photo-induced doping显示文摘Metal-semiconductor diodes constructed from two-dimensional(2D)van der Waals heterostructures show excellent gate electrostatics and a large built-in electric field at the tunnel junction,which can be exploited to make highly sensitive photodetector.Here we demonstrate a metal-semiconductor photodiode constructed by the monolayer graphene(Gr)on a few-layer black phosphorus(BP).Due to the presence of a built-in potential barrier(~0.09±0.03 eV)at the Gr-BP interface,the photoresponsivity of the Gr-BP device is enhanced by a factor of 672%,and the external quantum efficiency(EQE)increases to648%from 84%of the bare BP.Electrostatic gating allows the BP channel to be switched between p-type and n-type conduction.We further demonstrate that excitation laser power can be used to control the current polarity of the Gr-BP device due to photon-induced doping.The versatility of the Gr-BP junctions in terms of electrostatic bias-induced or light-induced switching of current polarity is potentially useful for making dynamically reconfigurable digital circuits. | Yanpeng Liu Ming Yang Junpeng Lu Ying Liu Hongwei Liu Erwen Zhang Wei Fu Junyong Wang Zhenliang Hu Jun Yin Goki Eda Shijie Wang Jiabao Yi Ajayan Vinu Kian Ping Loh | 2022 | Chinese Chemical Letters2022，33，1： | 0 |
| 20 | Chiral self-assembly of terminal alkyne and selenium clusters organic–inorganic hybrid显示文摘The on-surface self-assembly of inorganic atomic clusters and organic molecules offers significant opportunities to design novel hybrid materials with tailored functionalities.By adopting the advantages from both inorganic and organic components,the hybrid self-assembly molecules have shown great potential in future optoelectrical devices.Herein,we report the co-deposition of 4,8-diethynylbenzo[1,2-d-4,5-d0]bisoxazole(DEBBA)and Se atoms to produce a motif-adjustable organic–inorganic hybrid self-assembly system via the non-covalent interactions.By controlling the coverage of Se atoms,various chiral molecular networks containing Se,Se_(6),Se_(8),and terminal alkynes evolved on the Ag(111)surface.In particular,with the highest coverage of Se atoms,phase segregation into alternating one-dimensional chains of non-covalently bonded Se_(8) clusters and organic ligands has been noticed.The atom-coverage dependent evolution of self-assembly structures reflects the remarkable structural adaptability of Se clusters as building blocks based on the spontaneous resize to reach the maximum non-covalent interactions.This work has significantly extended the possibilities of flexible control in self-assembly nanostructures to enable more potential functions for broad applications. | Zhi Chen Tao Lin Haohan Li Mingzi Sun Chenliang Su Bolong Huang Kian Ping Loh | 2022 | Nano Research2022，15，3： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员