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Nano Research 2024年第4期17卷 3029-3034页

作者： Xue Miao Hanxiao Yang Zekun Li Meifei Cheng Yilin Zhao Lingyu Wan Aifang Yu Junyi Zhai Center on nanoenergy Research School of Physical Science and TechnologyGuangxi UniversityNanning 530004China beijing institute of Nano Energy and Nano Systems Chinese Academy of SciencesBeijing 101400China School of Nanoscience and Engineering University of Chinese Academy of ScienceBeijing 101408China

The ocean,with its highly variable and complex meteorological conditions,harbors enormous renewable *** nanogenerators(TENGs),which possess unique advantages,show exciting prospects in water wave energy *** to design and optimize TENGs to cover all characteristic water wave energies and achieve efficient energy utilization is *** this paper,we carefully designed and fabricated a columnar multi-layer sliding TENG(CMLS-TENG)that can harvest water wave energy independent of wave height and *** rods with a hollow acrylic spherical shell were introduced to deliver wave energy,ensuring that the CMLS-TENG can work in all directions from 0°to 360°.Based on the sliding structure,switching the optimized CMLS-TENG is independent of wave *** optimized CMLS-TENG can achieve a total power density of 730 mW/m^(3) at a wave height of only 4.8 cm regardless of wave direction,which can illuminate multiple light-emitting diodes(LEDs)to provide lighting and provide power to a watch and a hygrometer for temperature and humidity *** work provides new choices and hopes for the effective collection of full-range water wave energy.

关键词： triboelectric nanogenerator wave energy multi-direction columnar slide

具有骨样微环境的压电催化可控矿化支架实现内源性骨再生

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Science Bulletin 2024年第12期69卷 1895-1908页

作者：崔希胥玲玲单义珠李佳宣吉健颖汪恩贵张葆堃文晓舟白源罗聃陈春英李舟 beijing Key Laboratory of Micro-nano Energy and Sensor Beijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing 101400China School of Nanoscience and Engineering University of Chinese Academy of SciencesBeijing 100049China New Cornerstone Science Laboratory CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety and CAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijing 100190China

Orderly hierarchical structure with balanced mechanical,chemical,and electrical properties is the basis of the natural bone *** by nature,we developed a piezocatalytically-induced controlled mineralization strategy using piezoelectric polymer poly-L-lactic acid(PLLA)fibers with ordered micro-nano structures to prepare biomimetic tissue engineering scaffolds with a bone-like microenvironment(pcm-PLLA),in which PLLA-mediated piezoelectric catalysis promoted the in-situ polymerization of dopamine and subsequently regulated the controllable growth of hydroxyapatite crystals on the fiber *** fibers,as analogs of mineralized collagen fibers,were arranged in an oriented manner,and ultimately formed a bone-like interconnected pore structure;in addition,they also provided bone-like piezoelectric *** uniformly sized HA nanocrystals formed by controlled mineralization provided a bone-like mechanical strength and chemical *** pcm-PLLA scaffold could rapidly recruit endogenous stem cells,and promote their osteogenic differentiation by activating cell membrane calcium channels and PI3K signaling pathways through ultrasound-responsive piezoelectric *** addition,the scaffold also provided a suitable microenvironment to promote macrophage M2 polarization and angiogenesis,thereby enhancing bone regeneration in skull defects of *** proposed piezocatalytically-induced controllable mineralization strategy provides a new idea for the development of tissue engineering scaffolds that can be implemented for multimodal physical stimulation therapy.

关键词： Piezoelectric catalysis Controllable mineralization Biomimetic Bone repair Biodegradable

一维/二维半导体器件肖特基势垒高度的调整方法

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Science Bulletin 2024年第9期69卷 1342-1352页

作者：孟建平李正国李舟 beijing institute of nanoenergy and nanosystems Chinese Academy of SciencesBeijing 101400China School of Nanoscience and Engineering University of Chinese Academy of SciencesBeijing 100049China Department of Electrical and Computer Engineering National University of SingaporeSingapore 117583Singapore Center for Intelligent Sensors and MEMS National University of SingaporeSingapore 117608Singapore

The Schottky contact which is a crucial interface between semiconductors and metals is becoming increasingly significant in nano-semiconductor devices. A Schottky barrier, also known as the energy barrier, controls the depletion width and carrier transport across the metal–semiconductor *** or adjusting Schottky barrier height(SBH) has always been a vital issue in the successful operation of any semiconductor device. This review provides a comprehensive overview of the static and dynamic adjustment methods of SBH, with a particular focus on the recent advancements in nanosemiconductor devices. These methods encompass the work function of the metals, interface gap states,surface modification, image-lowering effect, external electric field, light illumination, and piezotronic effect. We also discuss strategies to overcome the Fermi-level pinning effect caused by interface gap states, including van der Waals contact and 1D edge metal contact. Finally, this review concludes with future perspectives in this field.

关键词： Schottky contact Schottky barrier height Adjustment methods One-and two-dimensional semiconductor

Highly stretchable kirigami-patterned nanofiber-based nanogenerators for harvesting human motion energy to power wearable electronics

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Materials Futures 2024年第2期3卷 131-140页

作者： Chuan Ning Shengxin Xiang Xiupeng Sun Xinya Zhao Chuanhui Wei Lele Li Guoqiang Zheng Kai Dong College of Materials Science and Engineering Key Laboratory of Material Processing and Mold(Ministry of Education)Zhengzhou UniversityZhengzhou 450001People’s Republic of China Key Laboratory of Materials Physics Ministry of EducationSchool of Physics and MicroelectronicsZhengzhou UniversityZhengzhou 450001People’s Republic of China 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 School of Nanoscience and Technology University of Chinese Academy of SciencesBeijing 100049People’s Republic of China

Wearable electronics are advancing towards miniaturization and ***,traditional energy supply methods have largely hindered their *** effective solution to this problem is to convert human mechanical energy into electricity to power wearable electronic ***,it is greatly attractive to design flexible,foldable and even stretchable energy harvesting ***,we use the electrospinning and kirigami approach to develop a type of highly stretchable kirigami-patterned nanofiber-based triboelectric nanogenerator(K-TENG).Due to its innovative structural design,the K-TENG can achieve a tensile strain of 220%,independent of the tensile properties of the material *** a person swings their arms,the K-TENG fixed to the clothing can convert mechanical energy from human movement into electrical *** produced electricity can directly drive 50 LED lights and a digital watch,or be stored in a lithium battery to charge the smartwatch and smartphone,*** study employs a new method to fabricate a stretchable triboelectric nanogenerator and demonstrates its promising applications in wearable power technology.

关键词： stretchable triboelectric nanogenerators kirigami energy harvesting

Fast prototype and rapid construction of three-dimensional and multi-scaled pitcher for controlled drainage by systematic biomimicry

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International Journal of Extreme Manufacturing 2024年第3期6卷 489-503页

作者： Tao Shen Ning Li Shijie Liu Cunlong Yu Chengqi Zhang Kang Yang Xingfei Li Ruochen Fang Lei Jiang Zhichao Dong Research institute for Frontier Science Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education BeijingSchool of ChemistryBeihang UniversityBeijing 100191People’s Republic of China CAS Key Laboratory of Bio-inspired Materials and Interfacial Science Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190People’s Republic of China CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro-nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing 100083People’s Republic of China School of Future Technology&School of Nanoscience and Engineering University of Chinese Academy of SciencesBeijing 101407People’s Republic of China School of Chemistry and Materials Science University of Science and Technology of China230026 HefeiAnhuiPeople’s Republic of China Suzhou institute for Advanced Research University of Science and Technology of China215123 SuzhouJiangsuPeople’s Republic of China State Key Laboratory of Precision Measuring Technology and Instruments Tianjin University300072 TianjinPeople’s Republic of China

Biomimetic materials that use natural wisdom to solve practical problems are developing *** trend for systematic biomimicry is towards in-situ characterization of naturalcreatures with high spatial ***,rapid reconstruction of digital twin models with the same complex features as the prototype is ***,it faces bottlenecks and limits in fast characterization and fabrication,precise parameter optimization,geometricdeviations control,and quality *** solve these challenges,here,we demonstrate astate-of-the-art method taking advantage of micro-computed tomography and three-dimensional printing for the fast characterization of the pitcher plant Nepenthes x ventrata and fabrication of its biomimetic model to obtain a superior drainage controller with multiscale structures withprecise surface morphology optimization and geometric deviation ***-rupture-based drainage dynamic and mechanisms are characterized by x-ray and high-speed videography,which determines the crucial structures for unique *** the optimized artificial pitchers are further developed into sustained drainage devices with novel applications,such as detection,reaction,and smoke control.

关键词： systematic biomimicry biomimetic materials Micro-CT drainage digital twin

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基于摩擦伏特效应的超滑表征技术

Science Bulletin 2024年第9期69卷 1197-1201页

作者：王昭政高凯冯源曹杰宫礼坤范贝贝张毅解国新张弛 CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro-nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing 101400China State Key Laboratory of Tribology in Advanced Equipment Tsinghua UniversityBeijing 100084China School of Nanoscience and Engineering University of Chinese Academy of SciencesBeijing 100049China School of Electrical&Electronic Engineering Nanyang Technological UniversitySingapore 639798Singapore Center on nanoenergy Research School of Physical Science and TechnologyGuangxi UniversityNanning 530004China institute of Intelligent Flexible Mechatronics Jiangsu UniversityZhenjiang 212013China institute of New Materials and Advanced Manufacturing Beijing Academy of Science and TechnologyBeijing 100084China

Friction occurs in our daily lives, and statistics have shown that it consumes approximately 1/3 of the primary energy. In addition,mechanical interface friction significantly impacts the efficiency,noise, accuracy, corrosion, reliability, and operational lifespans of equipment. Several studies have revealed various methods for reducing the coefficient of friction (COF) to the superlubricity state(COF 1) through efficient lubrication technology.

关键词： friction corrosion energy.

Physical mechanisms of contact-electrification induced photon emission spectroscopy from interfaces

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Nano Research 2023年第9期16卷 11545-11555页

作者： Yang Nan Jiajia Shao Ding Li Xin Guo Morten Willatzen Zhong Lin Wang beijing institute of nanoenergy and nanosystems Chinese Academy of SciencesBeijing 101400China School of Nanoscience and Technology University of Chinese Academy of SciencesBeijing 100049China Georgia institute of Technology AtlantaGA 30332USA

Photon emission during contact electrification(CE)has recently been observed,which is called as CE-induced interface photon emission spectroscopy(CEIIPES).Physical mechanisms of CEIIPES are essential for interpreting the structure and electronic interactions of a contacted *** the methods of density functional theory(DFT)and time-dependent DFT(TDDFT),it is confirmed theoretically that the spectrum of emitted photons is contributed from electron transfer and transition during ***,the excited electrons from higher energy state in one material may transfer to a lower energy state of another material followed by a transition;and/or some unstable excited electrons at a higher energy level of one material may transit to a lower energy state of itself,both of which result in ***,the CE-induced interface absorption spectrum(CEIIAS)has been demonstrated,due to the intermolecular electron transfer excitation.

关键词： spectroscopy contact electrification(CE) time-dependent density functional theory(TDDFT) CE-induced interface photon emission spectroscopy(CEIIPES) CE-induced interface absorption spectrum(CEIIAS) polymers

Recent advances of implantable systems and devices in cancer therapy and sensing

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Nano Research 2023年第9期16卷 11653-11666页

作者： Zhuoheng Jiang Zhaoyang Yue Zhirong Liu Linlin Li beijing institute of nanoenergy and nanosystems Chinese Academy of SciencesBeijing 101400China School of Nanoscience and Technology University of Chinese Academy of SciencesBeijing 100049China School of Chemistry and Chemical Engineering Center on Nanoenergy ResearchSchool of Physical Science and TechnologyGuangxi UniversityNanning 530004China

Malignant tumors have the capability to metastasize and colonize,meaning that they can spread to other organs and tissues,distributing metastatic focus and are hard to *** significant advances have been made in cancer treatment,it remains one of the leading causes of death around the *** recent years,new-emerging implantable systems and devices have been developed to tackle the challenge of metastatic *** this review,implantable systems for suppressing tumors and preventing tumor recurrence are *** particular,we emphasize the responsive drug delivery systems and the external field assisted catalytic therapy for tumor treatment,as well as implantable biosensors for tumor microenvironment *** also conclude the open challenges and future perspectives of implantable systems and devices for cancer therapy and sensing.

关键词： implantable devices cancer therapy drug delivery biosensor nanogenerator

Round-trip oscillation triboelectric nanogenerator with high output response and low wear to harvest random wind energy

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Nano Research 2023年第8期16卷 11259-11268页

作者： Xinyu Hu Junrui Feng Chuangjian Liang Heng Ning Chunjin Chen Jiayu Li Honggui Wen Huilu Yao Lingyu Wan Guanlin Liu Guangxi Key Laboratory of Electrochemical Energy Materials School of Physical Science and TechnologyGuangxi UniversityNanning 530004China beijing institute of nanoenergy and nanosystems Chinese Academy of SciencesBeijing 101400China

Triboelectric nanogenerator(TENG)has made significant progress in wind energy *** the most advantageous rotary TENG among wind energy harvesters,the severe material wear and the output that fluctuates with wind speed seriously hinder the application of TENG wind energy *** this study,we propose a round-trip oscillation triboelectric nanogenerator(RTO-TENG)consisting of a crank transmission mechanism and a power generation *** RTO-TENG utilizes a simple crank transmission mechanism combined with a zigzag-laminated triboelectric nanogenerator(Z-TENG)to achieve high-performance constant output and low material *** crank transmission mechanism can realize the transformation from circular motion to arc reciprocating motion,converting the random wind energy into bi-directional kinetic energy,driving the vertical contact and separation of the *** to the low transmission ratio(1:1)of the crank transmission mechanism and the consistent frequency of the Z-TENG contact–separation with that of the pendulum,the RTO-TENG’s power generation unit(10 Z-TENGs)is insensitive to changes in wind speed,resulting in a constant and stable output response at various *** 480,000 cycles,the output of RTO-TENG decreased by only 0.9%compared to the initial value of 6μC,and the scanning electron microscopy(SEM)images of the polytetrafluoroethylene(PTFE)film showed no significant wear on the surface of the friction layer,demonstrating excellent output stability and abrasion resistance of the RTO-TENG wind energy collector’s *** equipped energy management module,based on a gas discharge tube switch,can further enhance the output performance of the *** optimizing its inductor parameter L to match the load capacitor,it can charge a 220μF load capacitor to 13.4 V in 40 s,resulting in a 298%improvement in charging speed compared to the voltage of 4.48 V without the management ***,the RTO-TENG can efficiently provide power t

关键词： triboelectric nanogenerator wind energy harvesting round-trip oscillation structure bi-directional kinetic energy gas discharge tube switch

Bionic iontronics based on nano-confined structures

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Nano Research 2023年第9期16卷 11718-11730页

作者： Han Qian Di Wei Zhong Lin Wang beijing institute of nanoenergy and nanosystems Chinese Academy of SciencesBeijing 101400China School of Nanoscience and Engineering University of Chinese Academy of SciencesBeijing 100049China School of Materials Science and Engineering Georgia Institute of TechnologyAtlantaGA 30332USA

The Moore’s law in silicone-based electronics is reaching its limit and the energy efficiency of the most sophisticated electronics to mimic the iontronic logic circuit in single-celled organisms is still inferior to their natural *** electronics,iontronics is widely present in nature,and provides the fundamentals for many life activities through the transmission and conversion of information and energy via ***,as nanotechnology and fabrication processes continue to advance,highly efficient iontronics could be enabled by creation of asymmetry from nano-confined unipolar ion transport through various nanohierarchical structures of *** introduction of bionic design and nanostructures has made it possible for ions to demonstrate numerous anomalous behaviours and entirely new mechanisms,which are governed by complex interfacial *** this review,we discuss the origins,development,mechanism,and applications of bionic iontronics and analyze the unique benefits as well as the practicality of iontronics from a variety of ***,as an emerging field of research with innumerable challenges and opportunities for exploring the theory and applications of ions as transport carriers,promises to provide new insights in many subjects covering energy and sensing,etc.,and establishes a new paradigm in investigating the ionic-electric signal transduction interface for futuristic iontronic logic circuit and neuromorphic computing.

关键词： iontronics electronics nano-confined ion transport nanofluidic asymmetry