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2022 Compound Semiconductor Week, CSW 2022

作者： Zhou, Jingan Zhao, Xuan Xu, Rui Fu, Kai Li, Tao Xu, Mingfei He, Ziyi Robinson, Jacob T. Zhu, Hanyu Zhang, Xiaodong Zhao, Yuji Rice University Department of Electrical and Computer Engineering HoustonTX77005 United States Rice University Smalley-Curl Institute Applied Physics Graduate Program HoustonTX77005 United States Rice University Department of Materials Science and NanoEngineering HoustonTX77005 United States Arizona State University School of Electrical Computer and Energy Engineering TempeAZ85287 United States Suzhou Institute of Nano-tech and Nano-bionics CAS Key Laboratory of Nanodevices and Applications Suzhou215123 China

ISBN: (数字)9781665453400

ISBN: (纸本)9781665453400

In this work, we report the second-order nonlinear optical susceptibility χ(2) for epsilon phase Gallium Oxide (ϵ-Ga2O3) thin film on sapphire. ϵ-Ga2O3 exhibits hexagonal P63mc space group symmetry, which is a non-centrosymmetric structure with non-zero second order susceptibility. By focusing a pulsed laser beam on to a polished ϵ-Ga2O3 thin film, we collected the generated second harmonic photons with an ultra-sensitive femtowatt photodetector, obtaining effective second-order nonlinear optical susceptibility of χ(2) = 4.89×10-3 pm/V at wavelength of 800 nm. Two different measurement systems collecting reflected and transmitted photons were applied separately to make the result more convincing. The wavelength dependence from 790 nm to 900 nm and polarization dependence from TM mode to TE mode were measured as well. These results will be helpful for the design and fabrication of Ga2O3 based integrated photonics platform in the infrared-visible spectral range. © 2022 IEEE.

关键词： Gallium compounds

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Fully gapped superconductivity and topological aspects of the noncentrosymmetric superconductor TaReSi

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Physical Review B 2023年第22期107卷 224504-224504页

作者： T. Shang J. Z. Zhao Lun-Hui Hu D. J. Gawryluk X. Y. Zhu H. Zhang J. Meng Z. X. Zhen B. C. Yu Z. Zhou Y. Xu Q. F. Zhan E. Pomjakushina T. Shiroka Key Laboratory of Polar Materials and Devices (MOE) School of Physics and Electronic Science East China Normal University Shanghai 200241 China Chongqing Key Laboratory of Precision Optics Chongqing Institute of East China Normal University Chongqing 401120 China Co-Innovation Center for New Energetic Materials Southwest University of Science and Technology Mianyang 621010 China Department of Physics and Astronomy University of Tennessee Knoxville Tennessee 37996 USA Laboratory for Multiscale Materials Experiments Paul Scherrer Institut CH-5232 Villigen PSI Switzerland Key Laboratory of Nanophotonic Materials and Devices & Key Laboratory of Nanodevices and Applications Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO) CAS Suzhou 215123 China Laboratory for Muon-Spin Spectroscopy Paul Scherrer Institut CH-5232 Villigen PSI Switzerland Laboratorium für Festkörperphysik ETH Zürich CH-8093 Zürich Switzerland

We report a study of the noncentrosymmetric TaReSi superconductor by means of the muon-spin rotation and relaxation (μSR) technique, complemented by electronic band-structure calculations. Its superconductivity, with Tc=5.5K and upper critical field μ0Hc2(0)∼3.4T, was characterized via electrical-resistivity and magnetic-susceptibility measurements. The temperature-dependent superfluid density, obtained from transverse-field μSR, suggests a fully gapped superconducting state in TaReSi, with an energy gap Δ0=0.79meV and a magnetic penetration depth λ0=562nm. The absence of a spontaneous magnetization below Tc, as confirmed by zero-field μSR, indicates a preserved time-reversal symmetry in the superconducting state. The density of states near the Fermi level is dominated by the Ta- and Re-5d orbitals, which account for the relatively large band splitting due to the antisymmetric spin-orbit coupling. In its normal state, TaReSi behaves as a three-dimensional Kramers nodal-line semimetal, characterized by an hourglass-shaped dispersion protected by glide reflection. By combining nontrivial electronic bands with intrinsic superconductivity, TaReSi is a promising material for investigating the topological aspects of noncentrosymmetric superconductors.

关键词： Superconducting gap Superconducting order parameter Superconductivity Superfluid density Topological superconductors Superconductors Muon spin relaxation & rotation

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High-power hybrid GaN-based green laser diodes with ITO cladding layer

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Photonics Research 2020年第3期8卷 279-285页

作者： LEI HU XIAOYU REN JIANPING LIU AIQIN TIAN LINGRONG JIANG SIYI HUANG WEI ZHOU LIQUN ZHANG HUI YANG Key Laboratory of Nanodevices and Applications Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of Sciences(CAS)Suzhou 215123China School of Nano-Tech and Nano-Bionics University of Science and Technology of ChinaHefei 230026China

Green laser diodes(LDs)still perform worst among the visible and near-infrared spectrum range,which is called the"green gap."Poor performance of green LDs is mainly related to the p-type Al Ga N cladding layer,which on one hand imposes large thermal budget on In Ga N quantum wells(QWs)during epitaxial growth,and on the other hand has poor electrical property especially when low growth temperature has to be *** demonstrate in this work that a hybrid LD structure with an indium tin oxide(ITO)p-cladding layer can achieve threshold current density as low as 1.6 k A∕cm^2,which is only one third of that of the conventional LD *** improvement is attributed to two benefits that are enabled by the ITO cladding *** is the reduced thermal budget imposed on QWs by reducing p-Al Ga N layer thickness,and the other is the increasing hole concentration since a low Al content p-Al Ga N cladding layer can be used in hybrid LD ***,the slope efficiency is increased by 25%and the operation voltage is reduced by 0.6 V for hybrid green *** a result,a 400 m W high-power green LD has been *** results indicate that a hybrid LD structure can pave the way toward high-performance green LDs.

关键词： diodes power laser

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bioinspired membranes for multi-phase liquid and molecule separation

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Science China Chemistry 2019年第1期62卷 14-23页

作者： Jingchong Liu Zhimin Cui Lanlan Hou Dianming Li Yuan Gao Li Shuai Jing Liu Jian Jin Nü Wang Yong Zhao Key Laboratory of Bioinspired Smart Interfacial Science and Technology of Ministry of Education Beijing Key Laboratory of Bioinspired Energy Materials and Devices School of Chemistry Beijing Advanced Innovation Center for Biomedical Engineering Beihang University i-Lab CAS Center for Excellence in Nanoscience and CAS Key Laboratory of Nano-Bio Interface Suzhou Institute of Nano-Tech and Nano-Bionics Chinese Academy of Sciences

Water pollution is a serious problem around the world. It causes the lack of clean drinking water and brings risks to human *** technology has become a competitive candidate to treat the contaminated wastewater due to its high separation efficiency and low energy consumption. In this review, we introduce the recent development of several kinds of bioinspired separation membranes, involving the membrane design and applications. We emphasize the multi-phase liquid separation membranes inspired from nature with special wettability applied for oil/water separation, organic liquids mixture separation, and emulsion separation. After separating multi-phase liquids using these membranes, small molecule pollutants still exist in singlephase liquid. Therefore, we also expand the scope to small molecule-scale separation membranes, such as the nacre-like graphene oxide separation membrane and other nanofiltration membranes. Summary and outlook concerning the future development of separation membranes are also introduced briefly.

关键词： bioinspired superhydrophobic superwettability nanofibers separation membrane

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Evidence of unconventional pairing in the quasi-two-dimensional CuIr2−xRuxTe4 superconductor

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Physical Review B 2022年第14期106卷 144505-144505页

作者： T. Shang Y. Chen W. Xie D. J. Gawryluk R. Gupta R. Khasanov X. Y. Zhu H. Zhang Z. X. Zhen B. C. Yu Z. Zhou Y. Xu Q. F. Zhan E. Pomjakushina H. Q. Yuan T. Shiroka Key Laboratory of Polar Materials and Devices (MOE) School of Physics and Electronic Science East China Normal University Shanghai 200241 China Center for Correlated Matter and Department of Physics Zhejiang University Hangzhou 310058 China Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China Spallation Neutron Source Science Center Dongguan 523803 China Laboratory for Multiscale Materials Experiments Paul Scherrer Institut CH-5232 Villigen PSI Switzerland Laboratory for Muon-Spin Spectroscopy Paul Scherrer Institut CH-5232 Villigen PSI Switzerland Key Laboratory of Nanophotonic Materials and Devices & Key Laboratory of Nanodevices and Applications Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO) CAS Suzhou 215123 China Laboratorium für Festkörperphysik ETH Zürich CH-8093 Zürich Switzerland

The CuIr2−xRuxTe4 superconductors (with a Tc around 2.8 K) can host charge-density waves, whose onset and interplay with superconductivity are not well known at a microscopic level. Here, we report a comprehensive study of the x=0 and 0.05 cases, whose superconductivity was characterized via electrical-resistivity, magnetization, and heat-capacity measurements, while their microscopic superconducting properties were studied via muon-spin rotation and relaxation (μSR). In CuIr2−xRuxTe4, both the temperature-dependent electronic specific heat and the superfluid density (determined via transverse-field μSR) are best described by a two-gap (s+d)-wave model, comprising a nodeless gap and a gap with nodes. The multigap superconductivity is also supported by the temperature dependence of the upper critical field Hc2(T). However, under applied pressure, a charge-density-wave order starts to develop and, as a consequence, the superconductivity of CuIr2Te4 achieves a more conventional s-wave character. Our series of experiments provides ample evidence that the CuIr2−xRuxTe4 family belongs to the rare cases where an unconventional superconducting pairing is found near a charge-density-wave quantum critical point.

关键词： Charge density waves Superconductivity Superconductors Unconventional superconductors Muon spin relaxation & rotation

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Electrically Stimulated Band Alignment Transit in Black Phosphorus/β-Ga2O3 Heterostructure Dual-band Photodetector

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Chemical Research in Chinese Universities 2020年第4期36卷 703-708页

作者： LI Chang XIE Liu HE Tao ZHANG Yan DONG Zhuo YANG Zeyuan ZHANG Xiaodong WANG Zhongchang ZHANG Kai Nano Science and Technology Institute University of Science and Technology of ChinaSuzhou 215123P.R.China i-Lab Suzhou Institute of Nano-Tech and Nano-Bionics(SINANO)Chinese Academy of SciencesSuzhou 215123P.R.China School of Nano Technology and Nano Bionics University of Science and Technology of ChinaHefei 230026P.R.China CAS Key Laboratory of Nanodevices and Applications Suzhou Institute of Nano-Tech and Nano-Bionics(SINANO)Chinese Academy of SciencesSuzhou 215123P.R.China International Iberian Nanotechnology Laboratory(INL) Avenida Mestre Jose Veiga s/nBraga 4715-330Portugal

In recent decades,dual-band photodetectors have received widespread attention due to better target iden-tification,which are considered as the development trend of next generation ***,the traditional dual-band photodetectors based on heteroepitaxial growth,superlattice and multiple quantum well structures are limited by complex fabrication process and low ***,we report a UV/IR dual-band photodetector by integrating ultra-wide gap B-Ga2O,and narrow-gap black phosphorous(BP)nanoflakes.A vertical van der Waals(vdW)heterostructure is formed between BP and B-Ga,O,by mechanically exfoliated method integrated without the requirement of lattice *** heterostructure devices show excellent rectification characteristics with high recti-fving ratio of ca.10 and low reverse current around ***,the device displays obvious photoresponse underUV and IR irradiations with responsivities of 0.87 and 2.15 mA/W,*** also explore the band alignment transit within the heterostructure photodetector at different bias *** work paves the way for fabricating novel dual-band photodetectors by utilizing 2D materials.

关键词： Black phosphorous β-Gallium oxide van der Waals heterostructure Dual-band photodetector

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All-in-one theranostic nanoplatfbrm with controlled drug release and activated MRI tracking functions for synergistic NIR-II hyperthermiachemotherapyof tumors

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nano Research 2019年第12期12卷 2971-2981页

作者： Xianguang Ding Haitao Zhao Chunyan Li Qiangbin Wang Jiang Jiang i-Lab and Division of Nanobiomedicine CAS Key Laboratory of Nano-Bio InterfaceCAS Center for Excellence in NanoscienceSuzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China Institute for Health Innovation and Technology National University of SingaporeSingapore 117599Singapore School of Nano Technology and Nano Bionics University of Science and Technology of ChinaHefei 230026China

Real-time tracking drug release behavior is fundamentally important for avoiding adverse effects or unsuccessful treatment in personalizemedical ***,the development of a non-invasive drug reporting platform still remains *** the design of a novelsyn thetic magnetic resonance imaging(MRI)agent for drug release tracking(SMART)is reported,which integrates photothermal core andparamagnetic ion/drug loading shell with a thermal valve in a hybrid *** near-infrared(NIR)-II photothermal effect originatingfrom inner Au-Cu9S5 nanohybrid core,burst release of drugs loaded in the mesoporous silica shell is *** concomitant use of aphase change material not only prevents premature drug release,but also regulates heating effect,keeping local temperature below 45℃,enabling synergistic chemotherapy and mild hyperthermia in vitro and in ***,the drug release from SMART facilitates protonaccessibility to the paramagnetic ions anchored inside mesopores channels,enhancing Iongitudinal T1 relaxation rate and displaying positivesignal correlation to the amount of released drug,thus allowing norvinvasive real-time monitoring of drug release *** current studyhighlights the potential of designed MRI nanophores such as SMART for real-time and in-situ monitoring of drug delivery for precisionthera nostic applications.

关键词： hyperthermia magnetic resonance near-infrared(NIR)-II window drug delivery chemotherapy

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An experimental demonstration of long-haul public-channel key distribution using matched superlattice physical unclonable function pairs

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Science Bulletin 2020年第11期65卷 879-882,M0003页

作者： Han Wu Zhizhen Yin Xinhai Tong Peng Ding Jianguo Xie Liubao Wang Peihua Liu Helun Song Xiaoming Chen Liwei Xu Shu Xu Yaohui Zhang School of Nano Technology and Nano Bionics University of Science and Technology of ChinaHefei 230026China Key Laboratory of Nanodevices and Applications Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of Sciences(CAS)Suzhou 215123China Beijing Electronic Science and Technology Institute Beijing 100070China North Institute of Information Technology Beijing 100072China

In a perfect security case of symmetric encryption,the secure key is generated from a true random number generator and cannot be ***,it has the same code length as the total ***,we require the secure key to be distributed by employing unconditionally secure *** from quantum secure direct communication(QSDC)that directly achieves the confidential transmission of secure information over a quantum channel without key distribution procedure[1–3],secure key generation and secure key distribution(SKD)are the two most remarkable challenges restricting the efficiency and security of a cryptosystem[4]in conventional secure communication systems.

关键词：密钥分发密钥管理测试套件系统安全公共信道超晶格安全因子孪生子

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Glutathione-capped quantum dots for plasma membrane labeling and membrane potential imaging

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nano Research 2019年第6期12卷 1321-1326页

作者： Guangcun Chen Yejun Zhang Zhao Peng Dehua Huang Chunyan Li Qiangbin Wang CAS Key Laboratory of Nano-Bio Interface Division of Nanobiomedicine and i-LabCAS Center for Excellence in Brain ScienceSuzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China School of Nano Technology and Nano Bionics University of Science and Technology of ChinaHefei 230026China College of Materials Sciences and Opto-Electronic Technology University of Chinese Academy of SciencesBeijing 100049China

The plasma membrane of cells is a crucial biological membrane that involved in a variety of cellular processes including cell signaling transduction through membrane electrical ***,monitoring membrane electrical activity using fluorescence imaging has attracted numerous attentions for its potential applications in evaluating how the nervous system ***,the development of ideal fluorescent voltage-sensitive probes with both high membrane labeling efficiency and voltage sensitivity is still retain a big ***,glutathionecapped CdSe@ZnS quantum dots (CdSe@ZnS-GSH QDs) with a size of 2.5 nm and an emission peak at 520 nm are synthesized using a facile ligand exchange method for plasma membrane labeling and membrane potential *** as-synthesized CdSe@ZnS-GSH QDs can effectively label cell membrane at neutral pH within 30 min and exhibit excellent optical stability in continuous imaging for up to 60 *** the test concentration up to 200 nM,CdSe@ZnS-GSH QDs show high biocompatibility to cells and do not affect cell proliferation,disturb cell membrane integrity or cause apoptosis and necrosis of ***,a two-component voltage sensor strategy based on fluorescence resonance energy transfer (FRET) between CdSe@ZnS-GSH QDs and the dipicrylamine (DPA) is successfully developed to monitor the membrane potential by the fluorescence of CdSe@ZnS-GSH *** study offers a facile strategy for labeling plasma membrane and monitoring the membrane potential of cells and will hold great potential in the research of signaling within intact neuronal circuits.

关键词： quantum dots membrane labeling membrane potential imaging fluorescence imaging neuron

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Superstructured α-Fe2O3 nanorods as novel binder-free anodes for high-performing fiber-shaped Ni/Fe battery

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Science Bulletin 2020年第10期65卷 812-819,M0003,M0004页

作者： Chenglong Liu Qiulong Li Jingwen Cao Qichong Zhang Ping Mana Zhenyu Zhou Chaowei Li Yagang Yao School of Nano-Tech and Nano-Bionics University of Science and Technology of ChinaHefei 230026China Division of Advanced Nanomaterials Key Laboratory of Nanodevices and ApplicationsJoint Key Laboratory of Functional Nanomaterials and DevicesCAS Center for Excellence in NanoscienceSuzhou Institute of Nanotech and NanobionicsChinese Academy of SciencesSuzhou 215123China National Laboratory of Solid State Microstructures College of Engineering and Applied SciencesJiangsu Key Laboratory of Artificial Functional Materials and Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093China Division of Nanomaterials and Jiangxi Key Laboratory of Carbonene Materials Suzhou Institute of Nano-Tech and Nano-BionicsNanchangChinese Academy of SciencesNanchang 330200China Senior 1 Class 15 Suzhou High School of Jiangsu ProvinceSuzhou 215123China

Fiber-shaped energy storage devices are indispensable parts of wearable and portable *** rechargeable Ni/Fe battery is a very appropriate energy storage device due to their good safety without organic electrolytes, high ionic conductivity, and low cost. Unfortunately, the low energy density,poor power density and cycling performance hinder its further practical applications. In this study, in order to obtain high performance negative iron-based material, we first synthesized a-iron oxide(α-Fe2O3) nanorods(NRs) with superstructures on the surface of highly conductive carbon nanotube fibers(CNTFs), then electrically conductive polypyrrole(PPy) was coated to enhance the electron, ion diffusion and cycle stability. The as-prepared α-Fe2O3@PPy NRs/CNTF electrode shows a high specific capacity of 0.62 Ah cm-3 at the current density of 1 A cm-3. Furthermore, the Ni/Fe battery that was assembled by the above negative electrode shows a maximum volumetric energy density of 15.47 mWh cm-3 with228.2 mW cm-3 at a current density of 1 A cm-3. The cycling durability and mechanical flexibility of the Ni/Fe battery were tested, which show good prospect for practical application. In summary, these merits make it possible for our Ni/Fe battery to have practical applications in next generation flexible energy storage devices.

关键词： a-Fe2O3 nanorods Superstructures PPy coating Ni/Fe battery Wearable electronics

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