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Emerging material platforms for integrated microcavity photonics

science China(Physics,Mechanics & Astronomy) 2022年第10期65卷 10-28页

作者： Jin Liu Fang Bo Lin Chang Chun-Hua Dong Xin Ou Blake Regan Xiaoqin Shen Qinghai Song Baicheng Yao Wenfu Zhang Chang-Ling Zou Yun-Feng Xiao State Key Laboratory of Optoelectronic Materials and Technologies School of PhysicsSun Yat-sen UniversityGuangzhou 510000China MOE Key Laboratory of Weak-Light Nonlinear Photonics TEDA Institute of Applied Physics and School of PhysicsNankai UniversityTianjin 300071China State Key Laboratory of Advanced Optical Communications System and Networks School of ElectronicsPeking UniversityBeijing 100871China CAS Key Lab of Quantum Information University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Functional Material for Informatics Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai 200050China School of Mathematical and Physical Sciences University of Technology SydneyUltimo 2007Australia School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System Harbin Institute of TechnologyShenzhen 518055China Key Laboratory of Optical Fiber Sensing and Communications(Ministry of Education) University of Electronic Science and Technology of ChinaChengdu 611731China State Key Laboratory of Transient Optics and Photonics Xi’an Institute of Optics and Precision MechanicsChinese Academy of SciencesXi’an 710119China State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics School of PhysicsPeking UniversityBeijing 100871China

Many breakthroughs in technologies are closely associated with the deep understanding and development of new material *** the main material used in microelectronics,Si also plays a leading role in the development of integrated *** indirect bandgap,absence ofχ(2)nonlinearity and the parasitic nonlinear absorptions at the telecom band of Si imposed technological bottlenecks for further improving the performances and expanding the functionalities of Si microcavities in which the circulating light intensity is dramatically *** past two decades have witnessed the burgeoning of the novel material platforms that are compatible with the complementary metal-oxide-semiconductor(COMS)*** particular,the unprecedented optical properties of the emerging materials in the thin film form have resulted in revolutionary progress in microcavity *** this review article,we summarize the recently developed material platforms for integrated photonics with the focus on chip-scale microcavity *** material characteristics,fabrication processes and device applications have been thoroughly discussed for the most widely used new material *** also discuss open challenges and opportunities in microcavity photonics,such as heterogeneous integrated devices,and provide an outlook for the future development of integrated microcavities.

关键词： microcavity integrated optics nonlinear optics

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ROS-responsive biomimetic nanoparticles for potential application in targeted anti-atherosclerosis

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Regenerative Biomaterials 2021年第4期8卷 97-106页

作者： Dan Tang Yi Wang Andy Wijaya Boyan Liu Ali Maruf Jinxuan Wang Jianxiong Xu Xiaoling Liao Wei Wu Guixue Wang Key Laboratory for Biorheological Science and Technology of Ministry of Education State and Local Joint Engineering Laboratory for Vascular ImplantsBioengineering College of Chongqing UniversityChongqing 400030China Chongqing Key Laboratory of Nano/Micro Composite Material and Device School of Metallurgy and Materials EngineeringChongqing University of Science and TechnologyChongqing 401331China

The development of nanomedicines provides new opportunities for the treatment of atherosclerosis(AS)due to their great advantages such as the improved drug solubility,enhanced bioavailability and reduced side *** these advantages,nanomedicines are still facing some *** problems remain in the short circulation life,lack of specific targeting and poor drug release *** order to overcome the shortages of conventional nanomedicines,the combination of biomimetic strategy with smart nanoagents has been *** light with the high reactive oxygen species(ROS)level in AS microenvironment and the fact that macrophages play a critical role in the pathogenesis of AS,we fabricated ROS-responsive biomimetic nanoparticles(NPs),which camouflaged macrophage membrane(MM)on ROS-responsive NPs loaded with rapamycin(RNPs)for potential application in AS *** resulting ROSresponsive biomimetic NPs(MM/RNPs)exhibited favorable hydrodynamic size with negative surface charge,retained the functional proteins from MM,and showed ROS-responsive drug *** of the biomimetic camouflaging on surface,MM/RNPs could effectively escape from macrophages uptake and target to inflammatory endothelial ***,MM/RNPs could inhibit the proliferation of macrophages and smooth muscle cells in ***,the MM-coated NPs were found to be nontoxic in both cytotoxicity assay and in vivo toxicity ***,these results demonstrated that MM/RNPs could be a potential candidate of drug delivery system for safe and effective anti-AS applications.

关键词： biomimetic nanoparticles macrophage membrane ROS-responsive targeted delivery atherosclerosis

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Data-driven design of high-performance MASnxPb1-xI3 perovskite materials by machine learning and experimental realization

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Light(science & Applications) 2022年第9期11卷 2115-2126页

作者： XIA CAI FENGCAI LIU ANRAN YU JIAJUN QIN MOHAMMAD HATAMVAND IRFAN AHMED JIAYAN LUO YIMING ZHANG HAO ZHANG YIQIANG ZHAN School of Information Science and Technology Fudan UniversityShanghai 200433China College of Information Mechanical and Electrical EngineeringShanghai Normal UniversityShanghai 200234China Center of Micro-Nano System Fudan UniversityShanghai 200433China Department of Physics Chemistry and BiologyLinkoping UniversityLinkoping SE-58183Sweden Key Laboratory of Micro and Nano Photonic Structures and Department of Optical Science and Engineering Fudan UniversityShanghai 200433China Yiwu Research Institute of Fudan University Chengbei RoadYiwu CityZhejiang 322000China

The photovoltaic performance of perovskite solar cell is determined by multiple interrelated factors,such as perovskite compositions,electronic properties of each transport layer and fabrication parameters,which makes it rather challenging for optimization of device performances and discovery of underlying ***,we propose and realize a novel machine learning approach based on forward-reverse framework to establish the relationship between key parameters and photovoltaic performance in high-profile MASnxPb1-xI3 perovskite *** proposed method establishes the asymmetrically bowing relationship between band gap and Sn composition,which is precisely verified by our *** on the analysis of structural evolution and SHAP library,the rapid-change region and low-bandgap plateau region for small and large Sn composition are explained,*** establishing the models for photovoltaic parameters of working photovoltaic devices,the deviation of short-circuit current and open-circuit voltage with band gap in defective-zone and low-bandgap-plateau regions from Shockley-Queisser theory is captured by our models,and the former is due to the deep-level traps formed by crystallographic distortion and the latter is due to the enhanced susceptibility by increased Sn4+*** more difficulty for hole extraction than electron is also concluded in the models and the prediction curve of power conversion efficiency is in a good agreement with Shockley-Queisser *** the help of search and optimization algorithms,an optimized Sn:Pb composition ratio near 0.6 is finally obtained for high-performance perovskite solar cells,then verified by our *** constructive method could also be applicable to other material optimization and efficient device development.

关键词： perovskite performance optimization

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Pressure-induced emission in 0D metal halide(EATMP)SbBr5 by regulating exciton-phonon coupling

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Chinese Journal of Structural Chemistry 2024年第7期43卷 47-53页

作者： Jiayuan Liang Xin Mi Songhao Guo Hui Luo Kejun Bu Tonghuan Fu Menglin Duan Yang Wang Qingyang Hu Rengen Xiong Peng Qin Fuqiang Huang Xujie Lü Center for High Pressure Science and Technology Advanced Research(HPSTAR) Shanghai201203China State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai200050China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China Center of Micro-Nano System School of Information Science and TechnologyFudan UniversityShanghai200433China Ordered Matter Science Research Center Nanchang UniversityNanchang330031China State Key Lab of Metal Matrix Composites School of Materials Science and EngineeringShanghai Jiao Tong UniversityDongchuan Road 800Shanghai200240China Shanghai Key Laboratory of Material Frontiers Research in Extreme Environments(MFree) Shanghai Advanced Research in Physical Sciences(SHARPS)PudongShanghai201203China

Zero-dimensional(0D)hybrid metal halides are considered as promising light-emitting materials due to their unique broadband emission from self-trapped excitons(STEs).Despite substantial progress in the development of these materials,the photoluminescence quantum yields(PLQY)of hybrid Sb-Br analogs have not fully realized the ca-pabilities of these materials,necessitating a better fundamental understanding of the structure-property ***,we have achieved a pressure-induced emission in 0D(EATMP)SbBr5(EATMP=(2-aminoethyl)trimethylphosphanium)and the underlying mechanisms are investigated using in situ experimental characterization and first-principles *** pressure-induced reduction in the overlap between the STE states and ground states(GSs)results in the suppression of phonon-assisted non-radiative *** photoluminescence(PL)evo-lution is systematically demonstrated to be controlled by the pressure-regulated exciton-phonon coupling,which can be quantified using Huang-Rhys *** detailed studies of the S-PLQY relation in a series of 0D hybrid antimony halides,we establish a quantitative structure-property relationship that regulating S value toward 21 leads to the optimized *** work not only sheds light on pressure-induced emission in 0D hybrid metal halides but also provides valuable insights into the design principles for enhancing the PLQY in this class of materials.

关键词： 0D hybrid metal halides Pressure-induced emission Structure-property relationship Huang-Rhys factor Exciton-phonon coupling

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Magnetic phase transitions in the triangular-lattice spin-1 dimer compound K2Ni2(SeO3)3

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Physical Review B 2024年第21期109卷 214430-214430页

作者： Lei Yue Ziyou Lu Kun Yan Le Wang Shu Guo Ruixin Guo Peng Chen Xiaobin Chen Jia-Wei Mei Department of Physics School of Science and State Key Laboratory on Tunable Laser Technology and Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System Shenzhen Institute for Quantum Science and Engineering International Quantum Academy Shenzhen 518048 China Dongguan Guangdong 523808 China Shenzhen Key Laboratory of Advanced Quantum Functional Materials and Devices

In our study, we conduct magnetization and heat capacity measurements to investigate field-induced magnetic phase transitions within the newly synthesized compound K2Ni2(SeO3)3, a spin-1 dimer system arranged on a triangular lattice. From our first-principles simulations, we determine that the spin system in K2Ni2(SeO3)3 can be represented as a two-dimensional triangular-lattice spin-1 dimer model, including an intra-dimer exchange of J1=0.32meV, an inter-dimer exchange of J2=0.79meV, and an easy-axis anisotropy of D=0.14meV. The presence of easy-axis magnetic anisotropy explains the distinct magnetic phase diagrams observed under c-axis directional and in-plane magnetic fields. Notably, our investigation unveils a two-step phase transition with the magnetic field aligned with the c direction. Our findings yield valuable insights into the magnetic phase transitions inherent to geometrically frustrated magnetic systems featuring dimer structures.

关键词： Frustrated magnetism Magnetic phase transitions Triangular lattice Magnetization measurements Specific heat measurements X-ray diffraction

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Magnetoelectric Coupling Based on Protons in Ammonium Sulfate

arXiv

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arXiv 2024年

作者： Meng, Lei He, Chen Yen, Fei State Key Laboratory on Tunable Laser Technology Ministry of Industry and Information Technology Key Laboratory of Micro-Nano Optoelectronic Information System The School of Science Harbin Institute of Technology Shenzhen China University Town Guangdong Shenzhen518055 China

Most ferroelectric crystals have their own set of unique characteristics and ammonium sulfate (NH4)2SO4 is no exception. We report on two previously unidentified features in ammonium sulfate: 1) that there are at least two successive transitions instead of one occurring at the Curie temperature TC = 223 K according to dielectric constant measurements;and 2) pronounced step-like anomalies are found in the magnetic susceptibility χ(T) exactly at TC. To explain these results, we take into account that there exists a previously unidentified linear coupling between the magnetic and electric dipole moments of the NH4+ tetrahedra due to their rapid reorientations and distorted geometry, respectively. The magnetic moments are small, 0.0016 μB for every C3 reorientation which involve three protons (H+) undergoing orbital motion. Nevertheless, short-range correlations exist in the paraelectric phase because the magnetic moments are restricted to only point along 14 possible orientations due to the symmetry and periodic nature of the potential wells. At TC, C2 reorientations (involving four protons) are no longer energetically feasible so the reduction in the degrees of freedom to 8 further enhances the effect of the magnetic interactions. This triggers long-range ordering of the orbital moments in an antiferromagnetic configuration along the ab-plane, which via Dzyaloshinskii–Moriya interactions, end up canting slightly toward the c-axis direction. Since there exists two types of inequivalent NH4+ groups that reorient at different frequencies with temperature and do not have the same degree of distortion, the emerging polar phase is ferrielectric. This previously unidentified 'magnetoprotonic' effect can be further extended toward understanding the fundamental causes of the spontaneous polarization in many other ferroelectric crystals as well as provide the missing link toward understanding the enhanced functionalities of many hydrogen-based compounds and organic-inorganic hy

关键词： Sulfur compounds

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Electrode materials for brain-machine interface:A review

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InfoMat 2021年第11期3卷 1174-1194页

作者： Nan Wu Shu Wan Shi Su Haizhou Huang Guangbin Dou Litao Sun SEU-FEI Nano-Pico Center Key Laboratory of MEMS of Ministry of EducationCollaborative Innovation Center for Micro/Nano FabricationDevice and SystemSoutheast UniversityNanjingChina Key Laboratory of Optoelectronic Technology and Systems Ministry of EducationKey Disciplines Laboratory of Novel Micro-Nano Devices and System TechnologySchool of Optoelectronics EngineeringChongqing UniversityChongqingChina Center for Advanced Materials and Manufacture Joint Research Institute of Southeast University and Monash UniversitySuzhouChina Center for Advanced Carbon Materials Southeast University and Jiangnan Graphene Research InstituteChangzhouChina

Brain-machine interface(BMI)is a device that translates neuronal information into commands,which is capable of controlling external software or hardware,such as a computer or robotic *** consequence,the electrodes with desirable electrical and mechanical properties for direct interacting between neural tissues and machines serves as the crucial and critical part of BMI ***,the development of material science provides many advanced electrodes for neural stimulating and ***,the widespread applications of nanotechnologies have innovatively introduced biocompatible electrode that can have similar characteristics with neural *** paper reviews the existing problems and discusses the latest development of electrode materials for BMI,including conducting polymers,silicon,carbon nanowires,graphene,and hybrid organic-inorganic *** addition,we will inspect at the technical and scientific challenges in the development of neural electrode for a broad application of BMI with focus on the biocompatibility,mechanical mismatch,and electrical performance of electrode materials.

关键词： biocompatibility brain-machine interface electrode materials implantable device

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Modeling and Optimization of MEMS microphone Dust Protection Mesh for improved for Acoustic Performance using Finite Element Method Simulation 3

Modeling and Optimization of MEMS Microphone Dust Protection...

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3rd International Conference on New Materials, Machinery, and Vehicle Engineering, NMMVE 2024

作者： Zhang, Shiwang Li, Jiazhu Yuan, Jiawei Li, Zixuan Yuan, Zheng Qin, Shaohui Zhao, Zilong Tan, Hongqiang Luo, Ruiyan Zhao, Yihe Li, Jie Gao, Wendi Li, Zhikang Zhao, Libo State Key Laboratory for Manufacturing Systems Engineering International Joint Laboratory for Micro/Nano Manufacturing and Measurement Technologies Xi'an710049 China Research Institute for Intelligent Sensing Technology and System Xi'an710049 China School of Instrument Science and Technology Xi'an Jiaotong University Xi'an710049 China School of Mechanical Engineering Xi'an Jiaotong University Xi'an710049 China Shandong Laboratory of Yantai Advanced Materials and Green Manufacturing Yantai265503 China College of Mechanical and Electrical Engineering Shaanxi University of Science and Technology Xi'an710021 China

ISBN: (纸本)9781510686267

Currently, research on micro-Electro-Mechanical systems (MEMS) microphone dust protection meshes has predominantly focused on dust prevention capabilities, with scant attention given to acoustic performance, and there is a lack of systematic studies on the patterns of acoustic performance variation. This study utilizes finite element analysis to investigate the impact of structural parameters such as perforation radius, perforation rate, number of perforations, and perforation distribution patterns, as well as material properties like the density of the expanded-polytetrafluoroethylene (e-PTFE) membrane, on acoustic impedance and sound transmission loss. It was found that, at a constant perforation rate, a larger perforation radius results in lower acoustic impedance and sound transmission loss. This research provides a theoretical basis for the subsequent design of MEMS microphone dust protection meshes. Furthermore, an intelligent dust protection device based on metasurfaces has been proposed, which achieves an organic integration of dust prevention and sound wave control functions, and exhibits high sensitivity and robustness, laying the foundation for the development of future smart auditory technologies. © 2024 SPIE.

关键词： Acoustic impedance

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Rapid classification of proteins suspended in an evaporated sessile drop

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Talanta 2025年 294卷 128224页

作者： Liu, Maoxi Jiao, Feng He, Yongqing School of Chemical Engineering Kunming University of Science and Technology Kunming650500 China Chongqing Key Laboratory of Micro-Nano System and Intelligent Transduction National Research Base of Intelligent Manufacturing Service Chongqing Technology and Business University Chongqing400067 China

Reliable and accessible technologies for biological sample analysis are crucial for rapid, accurate illness diagnosis in resource-limited settings. Conventional methods like mass spectrometry and enzyme-linked immunosorbent assay (ELISA) often face challenges of technological complexity and equipment immobility, leading to delayed diagnoses and elevated costs. This study introduces evaporative deposition patterns from sessile droplets as a simple, cost-effective approach for classifying proteins in protein-salt mixtures, leveraging quantitative texture analysis to achieve high diagnostic accuracy. Using mixtures of potassium chloride (KCl) or sodium chloride (NaCl) with Bovine Serum Albumin (BSA) or Ovalbumin (OVA) as model systems, we varied salt (0.25–2 wt%) and protein (0.5–1.5 wt%) concentrations, observing distinct deposition morphologies such as coffee rings, cruciform/dendritic crystals at high salt levels, and volcano-shaped /spoke-like patterns at low or high protein levels. A novel quantitative framework integrating radial density distributions, gray-level co-occurrence matrix (GLCM) texture features, and receiver operating characteristic (ROC) curves achieved a 96.74 % classification accuracy for NaCl-protein mixtures, surpassing traditional texture analysis in simplicity and efficacy. These findings demonstrate the potential of evaporative deposition analysis as a simple tool for distinguishing molecular mixtures, laying the groundwork for future diagnostic applications. Unlike prior qualitative studies, this work provides a robust, quantitative method for protein classification, advancing the understanding of protein-salt interactions. © 2025 Elsevier B.V.

关键词： Body fluids

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Tuned single atom coordination structures mediated by polarization force and sulfur anions for photovoltaics

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nano Research 2021年第11期14卷 4025-4032页

作者： Hongyu Jing Zhengyan Zhao Chunyang Zhang Wei Liu Danyang Wu Chao Zhu Ce Hao Jiangwei Zhang Yantao Shi State Key Laboratory of Fine Chemicals Department of ChemistrySchool of Chemical EngineeringDalian University of TechnologyDalian116024China Department of Chemistry Tsinghua UniversityBeijing100084China SEU-FEI Nano-Pico Center Key Laboratory of MEMS of Ministry of EducationCollaborative Innovation Center for Micro/Nano FabricationDevice and SystemSoutheast UniversityNanjing210096China State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian116023China

Impeding high temperature sintering is challengeable for synthesis of carbon-supported single-atom catalysts (C-SACs), which requires high-cost precursor and strictly-controlled procedures. Herein, by virtue of the ultrastrong polarity of salt melts, sintering of metal atoms is effectively suppressed. Meanwhile, doping with inorganic sulfur anions not only produces sufficient anchoring sites to achieve high loading of atomically dispersed Co up to 13.85 wt.%, but also enables their electronic and geometric structures to be well tuned. When served as a cathode catalyst in dye-sensitized solar cells, the C-SAC with Co-N4-S2 moieties exhibits high activity towards the iodide reduction reaction (IRR), achieving a higher power conversion efficiency than that of conventional Pt counterpart. Density function theory (DFT) calculations revealed that the superior IRR activity was ascribed to the unique structure of Co-N4-S2 moieties with lower reaction barriers and moderate binding energy of iodine on the Co center, which was beneficial to I2 dissociation.

关键词： inorganic sulfur ions coordination structure regulating anti-sintering dye-sensitized solar cells

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