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Fin field-effect transistors based on 2D Bi_(2)O_(2)Se——a huge innovation of 2D transistors device structure

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Science China Chemistry 2023年第9期66卷 2439-2440页

作者： Qundong Fu Beng Kang Tay Zheng Liu School of Materials Science and Engineering Nanyang Technological UniversitySingapore 639798Singapore cintra cnrs/ntu/thales UMI 3288Research Techno PlazaSingapore 637553Singapore

The continuous downscaling(sub 5-nm nodes) of the processing technology is severely hampered by the shortchannel effects of the silicon(Si) material, which degrade the transistor's performance and raise the demand in the development of new device structures and materials to overcome them. Two-dimensional(2D) semiconductors are promising candidates for next-generation electronic materials owing to their atomic thickness and van der Waals(vdW) surface.

关键词： transistors transistor overcome

Quantum super-oscillation of a single photon

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Light(Science & Applications) 2016年第1期5卷 577-582页

作者： Guang Hui Yuan Stefano Vezzoli Charles Altuzarra Edward TF Rogers Christophe Couteau Cesare Soci Nikolay I Zheludev The Photonics Institute Centre for Disruptive Photonic TechnologiesNanyang Technological UniversitySingapore 637371Singapore cintra CNRS-NTU-ThalesCNRS UMI 3288Singapore 637553Singapore Optoelectronics Research Centre and Centre for Photonic Metamaterials University of SouthamptonSouthampton SO171BJUK Institute for Life Sciences University of SouthamptonSouthampton SO171BJUK Laboratory for Nanotechnology Instrumentation and OpticsICD CNRS UMR 6281University of Technology of TroyesTroyes 10000France

Super-oscillation is a counterintuitive phenomenon describing localized fast variations of functions and fields that happen at frequencies higher than the highest Fourier component of their *** physical implications of this effect have been studied in information theory and optics of classical fields,and have been used in super-resolution *** a general phenomenon of wave dynamics,super-oscillations have also been predicted to exist in quantum *** we report the experimental demonstration of super-oscillatory behavior of a single-quantum object,a *** super-oscillatory behavior is demonstrated by tight localization of the photon wavefunction after focusing with an appropriately designed slit mask to create an interference pattern with a sub-diffraction hotspot(~0.45λ).Such quantum super-oscillation can be used for low-intensity far-field super-resolution imaging techniques even down to single-photon counting regime,which would be of interest to quantum physics and non-invasive and label-free biological studies.

关键词： energy backflow single-photon wavefunction super-oscillation super-resolution

Dynamic photonic barcodes for molecular detection based on cavity-enhanced energy transfer

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Advanced Photonics 2020年第6期2卷 69-77页

作者： Yunke Zhou Zhiyi Yuan Xuerui Gong Muhammad D.Birowosuto Cuong Dang Yu-Cheng Chen Nanyang Technological University School of Electrical and Electronic EngineeringSingapore cintra umi cnrs/ntu/thales Singapore Nanyang Technological University School of Chemical and Biomedical EngineeringSingapore

Optical barcodes have demonstrated a great potential in multiplexed bioassays and cell tracking for their distinctive spectral *** vast majority of optical barcodes were designed to identify a specific target by fluorescence emission spectra,without being able to characterize dynamic changes in response to analytes through *** overcome these limitations,the concept of the bioresponsive dynamic photonic barcode was proposed by exploiting interfacial energy transfer between a microdroplet cavity and binding ***-gallery modes resulting from cavity-enhanced energy transfer were therefore converted into photonic barcodes to identify binding activities,in which more than trillions of distinctive barcodes could be generated by a single *** spectral barcoding was achieved by a significant improvement in terms of signal-to-noise ratio upon binding to target *** studies and experiments were conducted to elucidate the effect of different cavity sizes and analyte *** fluorescence lifetime was implemented to investigate the role of radiative and non-radiative energy ***,microdroplet photonic barcodes were employed in biodetection to exhibit great potential in fulfilling biomedical applications.

关键词： whispering-gallery modes optical barcodes fluorescence resonance energy transfer molecular sensing biointerface cavity-enhancement

Elastic and Stretchable Functional Fibers: A Review of Materials, Fabrication Methods, and Applications

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Advanced Fiber Materials 2021年第1期3卷 1-13页

作者： Mengxiao Chen Zhe Wang Kaiwei Li Xiandi Wang Lei Wei School of Electrical and Electronic Engineering Nanyang Technological UniversitySingapore 639798Singapore Institute of Photonics Technology Jinan UniversityGuangzhou 511443China Department of Biomedical Engineering Key Laboratory for Biomedical Engineering of Ministry of EducationZhejiang Provincial Key Laboratory of Cardio-Cerebral Vascular Detection Technology and Medicinal Effectiveness AppraisalZhejiang UniversityHangzhou 310027China cintra cnrs/ntu/thales UMI3288Research Techno Plaza50 Nanyang DriveSingapore 637553Singapore

Elastic and stretchable functional fibers have drawn attentions from wide research field because of their unique advantages including high dynamic bending elasticity,stretchability and high mechanic *** of efforts have been made to find promising soft materials and improve the processing methods to fabricate the elastomer fibers with controllable fiber geometries and designable *** progress has been made and various interdisciplinary applications have been demonstrated based on their unique mechanical performance.A series of remarkable applications,involving biomedicine,optics,electronics,human machine interfaces etc.,have been successfully ***,we summarize main processing methods to fabricate soft and stretchable functional fibers using different types of elastic materials,which are either widely used or specifically *** also introduce some representative applications of multifunctional elastic fibers to reveal this promising research *** these reported applications indicate that the fast innovated interdisciplinary area is of great potential and inspire more remarkable ideas in fiber sensing,soft electronics,functional fiber integration and other related research fields.

关键词： Elastic fibers Stretchable fibers Fiber sensing Multifunctional fibers

All-optical control of exciton flow in a colloidal quantum well complex

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Light(Science & Applications) 2020年第1期9卷 1749-1756页

作者： Junhong Yu Manoj Sharma Ashma Sharma Savas Delikanli Hilmi Volkan Demir Cuong Dang LumiNOUS Centre of Excellence for Semiconductor Lighting and DisplaysSchool of Electrical and Electronic EngineeringThe Photonics Institute(TPI)Nanyang Technological University50 Nanyang Avenue639798 SingaporeSingapore Department of Electrical and Electronics Engineering and Department of Physics UNAM-Institute of Materials Science and NanotechnologyBilkent UniversityBilkent06800 AnkaraTurkey School of Physical and Mathematical Sciences Division of Physics and Applied PhysicsNanyang Technological University639798 SingaporeSingapore cintra umi cnrs/ntu/thales 3288 Research Techno Plaza50 Nanyang DriveBorder X BlockLevel 6637553 SingaporeSingapore

Excitonics,an alternative to romising for processing information since semiconductor electronics is rapidly approaching the end of Moore’s ***,the development of excitonic devices,where exciton flow is controlled,is mainly focused on electric-field modulation or exciton polaritons in high-Q ***,we show an alloptical strategy to manipulate the exciton flow in a binary colloidal quantum well complex through mediation of the Förster resonance energy transfer(FRET)by stimulated *** the spontaneous emission regime,FRET naturally occurs between a donor and an *** contrast,upon stronger excitation,the ultrafast consumption of excitons by stimulated emission effectively engineers the excitonic flow from the donors to the ***,the acceptors’stimulated emission significantly accelerates the exciton flow,while the donors’stimulated emission almost stops this *** this basis,a FRET-coupled rate equation model is derived to understand the controllable exciton flow using the density of the excited donors and the unexcited *** results will provide an effective alloptical route for realizing excitonic devices under room temperature operation.

关键词： process flow quantum

Real-time dynamics of soliton triplets in fiber lasers

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Photonics Research 2020年第6期8卷 884-891页

作者： YIYANG LUO RAN XIA PERRY PING SHUM WENJUN NI YUSONG LIU HUY QUOC LAM QIZHEN SUN XIAHUI TANG LumiNG ZHAO cintra cnrs/ntu/thales UMI 3288Research Techno Plaza50 Nanyang DriveSingapore 637553Singapore School of Electrical and Electronic Engineering Nanyang Technological UniversitSingapore 639798Singapore School of Optical and Electronic Information&Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China Temasek Laboratories@ntu Research Techno Plaza50 Nanyang DriveSingapore 637553Singapore

The evolution of soliton molecules emphasizes the complex soliton dynamics akin to matter *** the simplest soliton molecule-a soliton pair constituted by two bound pulses-soliton molecules with more constituents have more degrees of freedom because of the temporal pulse separations and relative *** we detailedly characterize the transient dynamics of soliton triplets in fiber lasers by using the dispersive Fourier transform measurement.A particular form of leading,central,and tailing pulses is constructed to shed new light on more intriguing scenarios and fuel the molecular *** the vibrating dynamics of the central and tailing pulses are captured near the regime of equally spaced soliton triplets,which is reminiscent of the recurrent timing jitters within multi-pulse *** insights enable acess into a universal form of unequally spaced soliton triplets interpreted as 2+1 soliton *** binding strengths of intramo-lecular and intermolecular bonds are validated with respect to the diverse internal motions involved in this soliton triplet *** these findings unveil the transient dynamics with more degrees of freedom as well as highlight the possible application for all-optical bit storage.

关键词： fiber soliton dynamics

Rambutan-like hollow carbon spheres decorated with vacancy-rich nickel oxide for energy conversion and storage

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Carbon Energy 2020年第1期2卷 122-130页

作者： Zixu Sun Xinghui Wang Hu Zhao See W.Koh Junyu Ge Yunxing Zhao Pingqi Gao Guangjin Wang Hong Li School of Mechanical and Aerospace Engineering Nanyang Technological UniversitySingaporeSingapore College of Physics and Information Engineering Institute of Micro-Nano Devices and Solar CellsFuzhou UniversityFuzhouChina Ningbo Institute of Material Technology and Engineering Chinese Academy of SciencesNingboChina School of Materials Science and Energy Engineering Foshan UniversityFoshanChina Centre for Micro-/Nano-electronics(NOVITAS) School of Electrical and Electronic EngineeringNanyang Technological UniversitySingaporeSingapore cintra cnrs/ntu/thales UMI 3288SingaporeSingapore

Transition metal oxides hold great promise for lithium-ion batteries(LIBs)and electrocatalytic water splitting because of their high abundance and high energy ***,designing and fabrication of efficient,stable,high power density electrode materials are ***,we report rambutan-like hollow carbon spheres formed by carbon nanosheet decorated with nickel oxide(NiO)rich inmetal vacancies(denoted as h-NiO/C)as a bifunctional electrode material for LIBs and electrocatalytic oxygen evolution reaction(OER).When being used as the anode of LIBs,the h-NiO/C electrode shows a large initial capacity of 885mAh g−1,a robust stability with a high capacity of 817mAh g−1 after 400 cycles,and great rate capability with a high reversible capacity of 523mAh g−1 at 10Ag−1 after 600 ***,working as an OER electrocatalyst,the h-NiO/C electrode shows a small overpotential of 260mV at 10mAcm−2,a Tafel slope of 37.6mVdec−1 along with good *** work offers a cost-effective method for the fabrication of efficient electrode for LIBs and OER.

关键词： bifunctional materials hollow sphere NiO/C nanoparticles oxygen vacancies rambutan-like structure

The beauty of multi-active sites

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cMat 2024年第1期1卷 20-21页

作者： Yu-Qing Wang Sha-Sha Guo Zheng Liu School of Materials Science and Engineering Nanyang Technological UniversitySingaporeSingapore Department of Chemistry and Chemical Biology Cornell UniversityIthacaNew YorkUSA cintra cnrs/ntu/thales UMI 3288Research Techno PlazaSingaporeSingapore Institute for Functional Intelligent Materials National University of SingaporeSingaporeSingapore

The Sabatier principle—which states that the best catalyst should be at the peak of the volcano plot,with neither too strong nor too weak intermediate binding strength—plays the golden rule in designing highly active *** instance,Pt with a“just right”hydrogen adsorption free energy(ΔG_(H^(*))=~0 eV)is the most efficient catalyst for hydrogen evolution reaction(HER).^(1)Nevertheless,the pressing demand for renewable energy has sparked a quest beyond the top of the volcano plot,driving the innovation towards more effective,economical.

关键词： catalyst instance adsorption

Surfactant-assisted hydrothermal synthesis of MoS_(2) micro-pompon structure with enhanced photocatalytic performance under visible light

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Tungsten 2020年第2期2卷 203-213页

作者： Man‑Zhang Xu Qiang Li Yuan‑Yuan Lv Zhi‑Ming Yuan Yu‑Xi Guo Han‑Jun Jiang Jiu‑Wei Gao Jun Di Pin Song Li‑Xing Kang Lu Zheng Zhi‑Yong Zhang Wu Zhao Xue‑Wen Wang Zheng Liu Frontiers Science Center for Flexible Electronics Xi’an Institute of Flexible Electronics(IFE)and Xi’an Institute of Biomedical Materials&EngineeringNorthwestern Polytechnical UniversityXi’an 710072China School of Information Science and Technology Northwest UniversityXi’an 710127China School of Materials Science and Engineering Nanyang Technological UniversitySingapore 639798Singapore MIIT Key Laboratory of Flexible Electronics(KLoFE) Northwestern Polytechnical UniversityXi’an 710072China Centre for Micro‑/Nano‑Electronics(NOVITAS) School of Electrical and Electronic EngineeringNanyang Technological UniversitySingapore 639798Singapore cintra cnrs/ntu/thales and UMI 3288Research Techno PlazaSingapore 637553Singapore

MoS_(2) nanomaterial with the micro-pompon structure was synthesized by a surfactant-assisted hydrothermal *** morphologies and structures of as-prepared MoS_(2) micro-pompon were investigated by adding different types of surfactants such as cetyltrimethyl ammonium bromide(CTAB),sodium dodecylbenzene sulphonate(SDBS),and polyvinyl pyrrolidone(PVP).The results indicated that the morphology of MoS_(2) could be controlled and changed effectively by the cationic sur-factant of CTAB.A reasonable growth mechanism for hollow structured MoS_(2) micro-pompon by hydrothermal processes was ***,photocatalytic degradation properties of MoS_(2) micro-pompon under visible light were evaluated by degradation of common organic dyes,which include rhodamine B(RhB),congo red,methyl orange,and methylene *** results indicated that MoS_(2) micro-pompon owned the highly selective catalytic ability to RhB with degradation efficiency of 95%in 60 min and 68%in 30 *** the additive of the surfactant,the MoS_(2)-CTAB sample exhibited an enhanced ability of photocatalytic activity where degradation efficiency was improved to 92%in 30 *** method employed in this work could be expanded to fabricate other sulfides with the controllable morphology and structure to further regulate the photocatalytic performance.

关键词： Hydrothermal method MoS_(2)micro-pompon Surfactant-assistant Visible light photocatalytic Rhodamine B