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Enhancing light-matter interaction in 2D materials by optical micro/nano architectures for high-performance optoelectronic devices

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InfoMat 2021年第1期3卷 36-60页

作者： Li Tao Zefeng Chen Zhiyong Li Jiaqi Wang Xin Xu Jian-Bin Xu Department of Electronic Engineering The Chinese University of Hong KongHong KongSARChina Shenzhen Key Laboratory of Sensor Technology College of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhenChina

Two-dimensional materials are a promising solution for next-generation electronic and optoelectronic devices due to their unique *** to the atomic thickness of 2D materials,the light-matter interaction length in 2D materials is much shorter than that in bulk materials,which limits the performance of optoelectronic devices composed of 2D *** improve the light-matter interactions,optical micro/nano architectures have been introduced into 2D material optoelectronic *** this review,we present a concise introduction and discussion of various strategies for the enhancement of lightmatter interaction in 2D materials,namely,the plasmonic effect,waveguide,optical cavity,and reflection *** have outlined the current advances in high-performance 2D material optoelectronic devices(eg,photodetectors,electrooptic modulators,light-emitting diodes,and molecular sensors)assisted by these enhancement ***,we have discussed the future challenges and opportunities of micro/nano photonic structure designs in 2D material devices.

关键词： light-matter interaction micro/nano architecture 2d material photodetector Raman enhancement modulator

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Green Light-Activated Room Temperature No2 sensor Based on Ptcda-Loaded Zno Nanocluster

SSRN

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SSRN 2023年

作者： Cao, Xiangdong Hong, Junsheng Zhang, Zhonglei Li, Junda Tang, Jihua Wang, Jiaqi Yi, Duo Li, Xuejin Du, Yu Tian, Xiaoqing College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen518060 China Shenzhen Key Laboratory of Sensor Technology Shenzhen518060 China

Flower-like zinc oxide nanoclusters were successfully incorporated by different amount of PTCDA organic dye molecular, forming the hetero-structured PTCDA/ZnO composites. Remarkably, a study performed on their NO2 sensing properties reveals that the 0.5 wt% PTCDA-loaded ZnO sensor exhibits high response, excellent selectivity, quick response speed and ultralow detection limit of 1.8 ppb towards NO2 molecules at room temperature (25°C) under green light illumination, which possesses an apparent advantage over the ZnO sensors loaded with other PTCDA concentration as well as upon other light illumination conditions. This work makes a meaningful contribution to the development of NO2 sensor based on wide-band gap semiconductors with visible light irradiation. © 2023, The Authors. All rights reserved.

关键词： Zinc oxide

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lontophoresis-driven microneedle patch for the active transdermal delivery of vaccine macromolecules

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Microsystems & Nanoengineering 2023年第2期9卷 143-156页

作者： Ying Zheng Rui Ye Xia Gong Jingbo Yang Bin Liu Yunsheng Xu Gang Nie Xi Xie Lelun Jiang Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instrument School of Biomedical EngineeringShenzhen Campus of Sun Yat-Sen UniversityShenzhen 518107PR China Department of Dermatovenereology The Seventh Affliated HospitalSun Yat-sen UniversityShenzhen 518107PR China State Key Laboratory of Optoelectronic Materials and Technologies School of Electronics and Information TechnologySun Yat-sen UniversityGuangzhou510006PRChina

COVID-19 has seriously threatened public health,and transdermal vaccination is an effective way to prevent pathogen ***(MNs)can damage the stratum corneum to allow passive diffusion of vaccine macromolecules,but the delivery effciency is low,while iontophoresis can actively promote transdermal delivery but fails to transport vaccine macromolecules due to the barrier of the stratum ***,we developed a wearable iontophoresis-driven MN patch and its iontophoresis-driven device for active and effcient transdermal vaccine macromolecule ***/chitosan hydrogels with good biocompatibility,excellent conductivity,high elasticity,and a large loading capacity were prepared as the key component for vaccine storage and active *** transdermal vaccine delivery strategy of the iontophoresis-driven MN patch is“press and poke,iontophoresis-driven delivery,and immune response”.We demonstrated that the synergistic effect of MN puncture and iontophoresis significantly promoted transdermal vaccine delivery *** vitro experiments showed that the amount of ovalbumin delivered transdermally using the iontophoresis-driven MN patch could be controlled by the iontophoresis *** vivo immunization studies in BALB/c mice demonstrated that transdermal inoculation of ovalbumin using an iontophoresis-driven MN patch induced an effective immune response that was even stronger than that of traditional intramuscular ***,there was little concern about the biosafety of the iontophoresis-driven MN *** delivery system has a low cost,is user-friendly,and displays active delivery,showing great potential for vaccine self-administration at home.

关键词： patch elasticity synergistic

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基于摩擦伏特效应的卤化物钙钛矿用于自供能传感器

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Science Bulletin 2023年第17期68卷 1849-1852页

作者：吴颖辉黄龙彪潘曹峰 Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen 518060China Beijing Key Laboratory of Micro-nano Energy and Sensor Beijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing 100083China Guangdong Provincial Key Laboratory of Durability for Ocean Civil Engineering College of Civil and Transportation EngineeringShenzhen UniversityShenzhen 518060China Shenzhen Key Laboratory for Low-carbon Construction Material and Technology College of Civil and Transportation EngineeringShenzhen UniversityShenzhen 518060China

With the rapid development of aerospace,the Internet of Things,wearable devices,and portable instruments,the application scenarios for sensors are expanding and requiring higher performance in terms of conversion efficiency,flexibility,and ***,most sensors are powered by an external power source,which hinders the construction of flexible sensors due to their rigid nature.

关键词： stability hinder portable

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Stackelberg Game for Wireless Powered and Backscattering Enabled sensor Networks

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China Communications 2024年第3期21卷 189-204页

作者： Lyu Bin Cao Yi Wang Shuai Guo Haiyan Hao Chengyao Key Laboratory of Ministry of Education in Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and TelecommunicationsNanjing 210003China Jiangsu Engineering Research Center of Novel Optical Fiber Technology and Communication Network Suzhou 215006China Guangdong-Hong Kong-Macao Joint Laboratory of Human-Machine Intelligence-Synergy Systems Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China

This paper investigates a wireless powered and backscattering enabled sensor network based on the non-linear energy harvesting model, where the power beacon(PB) delivers energy signals to wireless sensors to enable their passive backscattering and active transmission to the access point(AP). We propose an efficient time scheduling scheme for network performance enhancement, based on which each sensor can always harvest energy from the PB over the entire block except its time slots allocated for passive and active information delivery. Considering the PB and wireless sensors are from two selfish service providers, we use the Stackelberg game to model the energy interaction among them. To address the non-convexity of the leader-level problem, we propose to decompose the original problem into two subproblems and solve them iteratively in an alternating manner. Specifically, the successive convex approximation, semi-definite relaxation(SDR) and variable substitution techniques are applied to find a nearoptimal solution. To evaluate the performance loss caused by the interaction between two providers, we further investigate the social welfare maximization problem. Numerical results demonstrate that compared to the benchmark schemes, the proposed scheme can achieve up to 35.4% and 38.7% utility gain for the leader and the follower, respectively.

关键词： backscatter communication energy interaction stackelberg game wireless powered sensor network

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Advances in the molecular diagnostic methods for circular RNA

Biomedical Analysis

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Biomedical Analysis 2024年第4期1卷 271-279页

作者： Zequan Ye Ke Wang Jianhua Zhou Jiasi Wang Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instrument School of Biomedical Engineering Shenzhen Campus of Sun Yat-sen University Shenzhen 518107 China School of Biomedical Engineering Sun Yat-sen University Guangzhou 510275 China

Circular RNA (circRNA) is a unique type of non-coding RNA, which is produced by back splicing of mRNA to form the covalent junction without 3′-5′ polarity and poly(A) tail. With the development of detection technology, a large number of circRNAs have been identified in organisms, and their biological functions and mechanisms have been uncovered gradually. In particular, circRNAs are abnormally expressed and play a critical role in many diseases, including gastric cancer, hepatocellular carcinoma, breast cancer, etc., showing great potential as disease biomarkers. At present, the main methods for detecting circRNA include RNA sequencing, RT-PCR, Northern blotting, etc., which have limited sensitivity and specificity. Recently, some new methods, such as isothermal amplification and digital droplet platform, have emerged to improve the sensitivity and quantitative accuracy for circRNA detection. In this review, we summarized the traditional and emerging methods for circRNA detection as well as the advantages and limitations, and look forward to future research directions.

关键词： Circular RNA Molecular diagnostic methods Isothermal amplification Digital assay CRISPR-Cas

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Intelligent Recognition Using Ultralight Multifunctional Nano‑Layered Carbon Aerogel sensors with Human‑Like Tactile Perception

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Nano-Micro Letters 2024年第1期16卷 172-186页

作者： Huiqi Zhao Yizheng Zhang Lei Han Weiqi Qian Jiabin Wang Heting Wu Jingchen Li Yuan Dai Zhengyou Zhang Chris RBowen Ya Yang CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro‑Nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing 101400People’s Republic of China Tencent Robotics X Shenzhen 518054People’s Republic of China School of Nanoscience and Technology University of Chinese Academy of SciencesBeijing 100049People’s Republic of China Department of Mechanical Engineering University of BathBath BA27AKUK Center on Nanoenergy Research School of Physical Science and TechnologyGuangxi UniversityNanning 530004People’s Republic of China

Humans can perceive our complex world through multi-sensory *** limited visual conditions,people can sense a variety of tactile signals to identify objects accurately and ***,replicating this unique capability in robots remains a significant ***,we present a new form of ultralight multifunctional tactile nano-layered carbon aerogel sensor that provides pressure,temperature,material recognition and 3D location capabilities,which is combined with multimodal supervised learning algorithms for object *** sensor exhibits human-like pressure(0.04–100 kPa)and temperature(21.5–66.2℃)detection,millisecond response times(11 ms),a pressure sensitivity of 92.22 kPa^(−1)and triboelectric durability of over 6000 *** devised algorithm has universality and can accommodate a range of application *** tactile system can identify common foods in a kitchen scene with 94.63%accuracy and explore the topographic and geomorphic features of a Mars scene with 100%*** sensing approach empowers robots with versatile tactile perception to advance future society toward heightened sensing,recognition and intelligence.

关键词： Multifunctional sensor Tactile perception Multimodal machine learning algorithms Universal tactile system Intelligent object recognition

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Combination therapy of hydrogel and stem cells for diabetic wound healing

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World Journal of Diabetes 2022年第11期13卷 949-961页

作者： Jia-Na Huang Hao Cao Kai-Ying Liang Li-Ping Cui Yan Li School of Biomedical Engineering Shenzhen Campus of Sun Yat-sen UniversityShenzhen 518107Guangdong ProvinceChina Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instrument Sun Yat-sen UniversityGuangzhou 510006Guangdong ProvinceChina Endocrinology Department Panyu Central HospitalGuangzhou 511400Guangdong ProvinceChina

Diabetic wounds(DWs)are a common complication of diabetes mellitus;DWs have a low cure rate and likely recurrence,thus affecting the quality of patients’*** traditional therapy cannot effectively improve DW closure,DW has become a severe clinical medical problem *** routine wound healing,DW is difficult to heal because of its chronically arrested inflammatory *** mesenchymal stem cells and their secreted cytokines can alleviate oxidative stress and stimulate angiogenesis in wounds,thereby promoting wound healing,the biological activity of mesenchymal stem cells is compromised by direct injection,which hinders their therapeutic *** form a three-dimensional network that mimics the extracellular matrix,which can provide shelter for stem cells in the inflammatory microenvironment with reactive oxygen species in DW,and maintains the survival and viability of stem *** review summarizes the mechanisms and applications of stem cells and hydrogels in treating DW;additionally,it focuses on the different applications of therapy combining hydrogel and stem cells for DW treatment.

关键词： Combination therapy Mesenchymal stem cells Hydrogel Diabetic wound Cells delivery Wound healing

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A review for design,mechanism,fabrication,and application of magnetically responsive microstructured functional surface

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International Journal of Extreme Manufacturing 2025年第1期7卷 96-128页

作者： Jian Wang Xingyi Song Chaochao Wang Yumei Zhou Ri Chen Yong Yang Bin Liu Yihao Zheng Hui Li Wei Zhou Lelun Jiang Guangdong Provincial Key Laboratory of Sensor Technology and Biomedical Instrument School of Biomedical EngineeringShenzhen Campus of Sun Yat-sen UniversityShenzhen 518107People’s Republic of China School of Mechatronic Engineering Guangdong Polytechnic Normal UniversityGuangzhou 510665People’s Republic of China School of Mechanical and Electrical Engineering Guangdong Polytechnic of Industry and CommerceGuangzhou 510550People’s Republic of China Mechanical&Materials Engineering Department Worcester Polytechnic InstituteWorcesterMA 01609United States of America Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering College of Mechatronics and Control EngineeringShenzhen UniversityShenzhen 518060People’s Republic of China Pen-Tung Sah Institute of Micro-Nano Science and Technology Xiamen UniversityXiamen 361005People’s Republic of China

Magnetically responsive microstructured functional surface(MRMFS),capable of dynamically and reversibly switching the surface topography under magnetic actuation,provides a wireless,noninvasive,and instantaneous way to accurately control the microscale engineered *** the last decade,many studies have been conducted to design and optimize MRMFSs for diverse applications,and significant progress has been *** review comprehensively presents recent advancements and the potential prospects in *** first classify MRMFSs into one-dimensional linear array MRMFSs,two-dimensional planar array MRMFSs,and dynamic self-assembly MRMFSs based on their ***,an overview of three deformation mechanisms,including magnetically actuated bending deformation,magnetically driven rotational deformation,and magnetically induced self-assembly deformation,are *** main fabrication strategies employed to create MRMFSs are summarized,including replica molding,magnetization-induced self-assembly,laser cutting,and ferrofluid-infused ***,the applications of MRMFS in droplet manipulation,solid transport,information encryption,light manipulation,triboelectric nanogenerators,and soft robotics are ***,the challenges that limit the practical applications of MRMFSs are discussed,and the future development of MRMFSs is proposed.

关键词： functional surfaces microstructures magnetic actuation manipulation

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Polydopamine nanolayer assisted internal photo-deposition of CdS nanocrystals for stable cosensitized photoanode

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Nano Research 2022年第10期15卷 8836-8845页

作者： Na Li Lu Han Hainan Zhang Juntong Huang Xudong Luo Xibao Li Yuanhao Wang Weiqi Qian Ya Yang School of Materials and Metallurgy University of Science and Technology LiaoningAnshan 114051China School of Materials Science and Engineering Nanchang Hangkong UniversityNanchang 330063China SUSTech Engineering Innovation Center School of Environmental Science and EngineeringSouthern University of Science and TechnologyShenzhen 518055China CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro-nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing 101400China

Hydrogen evolution via photo-electro-chemical(PEC)co-catalysis is potential for solving energy crisis and environmental *** rapidly advances of fabrication and broad applications of polydopamine(PDA)and its derivatives have drawn intense attentions in recent ***,an ultrathin PDA coating with nanometer accuracy was conformally grown on TiO_(2) nanotube arrays(NTAs)via electrochemical polymerization,in which the polymer provided a platform for further photoinduced assembly of CdS nanocrystals in the embedded *** optimized CdS@PDA/TiO_(2) NTAs hierarchical heterostructure as photoanode gave an excellent PEC performance and exhibited outstanding stability under light *** photocurrent density was heightened to 5.48 mA·cm^(–2),which was beneficial to H_(2) evolution with a rate of 20μmol·h^(–1)·cm^(–2).The improvement of PEC activity was ascribed to co-photosensitization,optimized carriers transfer,and transport route arised from CdS embedding,resulting to provide a persistent driving force for charge separation based on secure heterojunction of CdS/TiO_(2) glued by *** improvement of PEC stability was due to the inhibition of CdS photocorrosion covered by PDA *** advance boded well for the development of PEC field founded on multifunctional PDA.

关键词： polydopamine TiO_(2)nanotube arrays photoelectrocatalysis photocorrosion

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