Article
Chemistry, Physical
Peng Cui, Ying Ge, Xi Yao, Jingjing Wang, Jingjing Zhang, Huan Meng, Lan Liu, Jingsheng Wang, Jie Ju, Gang Cheng, Zuliang Du
Summary: Liquid-solid-based triboelectric nanogenerators (LS-TENG) are new tools for collecting energy from water in nature. Efforts have been made on LS-TENG based on superhydrophobic surfaces, resulting in higher energy output. However, there is a tradeoff between sliding speed and LS contact area.
Review
Physics, Multidisciplinary
Zhong Lin Wang
Summary: The review delves into the mechanisms of contact electrification and the principles of triboelectric nanogenerators, providing a comprehensive overview from basic physics to engineering applications. It discusses the output power, electromagnetic behavior, and current transport equation for TENGs, setting a standard theory for quantifying their performance. Additionally, the review explores the diverse applications of TENGs in harvesting mechanical energy for various sectors including energy science, environmental protection, wearable electronics, medical science, robotics, and artificial intelligence.
REPORTS ON PROGRESS IN PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Zhen Tang, Shiquan Lin, Zhong Lin Wang
Summary: A contactless method combining electric field and acoustic field is proposed to quantify the charges on a liquid droplet, successfully applied in studying both liquid-solid and liquid-liquid contact electrification effects, with a focus on the behavior of negatively precharged liquid droplets in the liquid-liquid CE.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Yong-Jin Park, Yun Goo Ro, Young-Eun Shin, Cheolhong Park, Sangyun Na, Yoojin Chang, Hyunhyub Ko
Summary: This study proposes a multi-layered micropatterned triboelectric nanogenerator (M-TENG) that generates multiple charges from a single touch by utilizing multiple friction layers and distinct spacers between layers. By integrating M-TENGs with an organic electrochemical transistor, a low energy consumption artificial synaptic device is successfully demonstrated, and long-term plasticity is emulated through continuous memory training.
Article
Polymer Science
Martin Timusk, Linards Lapcinskis, Viraj P. Nirwan, Annika Trei, Toivo Maimets, Amir Fahmi, Andris Sutka
Summary: The study explores potential synthesis routes for efficient, implantable, and bio-absorbable triboelectric nanogenerators, investigating their charge, thermal, and infrared spectroscopic properties, as well as biocompatibility. Copolymers of sorbitol and sebacic acid (PSS) and hexanediol and citric acid (PHC) were synthesized to improve charge efficiency, while a copolymer of citric acid, glutaric acid, 1,2-propanediol, and 1,6-hexanediol (CHGP) was synthesized through a novel route. Triboelectric measurements showed significantly higher surface charge compared to commercially available elastomers. Thermal analysis displayed typical degradation and phase change behavior. Cytotoxicity studies revealed higher cell viability for PSS and PHC, indicating their potential use in implantable devices.
Article
Chemistry, Multidisciplinary
Shihe Du, Shaoke Fu, Wencong He, Qianying Li, Kaixian Li, Huiyuan Wu, Jian Wang, Chuncai Shan, Qianjin Mu, Chenguo Hu
Summary: This paper proposes a novel ferromagnetic metal particle-based triboelectric nanogenerator (FMP-TENG), which improves the durability of TENG by using the rolling motion of particles instead of planar contact of film, and enhances its electric output by increasing the contact area. In addition, a metal powder mass sensor based on FMP-TENG is designed for dynamic monitoring of powder mass.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Chemistry, Physical
Yansong Gai, Yonggang Jiang, Zhou Li
Summary: Timely information feedback and active therapeutic schedule can shorten the rehabilitation period and reduce patient pain. Intelligent wearable and implantable medical electronic devices have potential for health information monitoring and disease treatment. Triboelectric nanogenerator (TENG) is a cost-effective, flexible, and self-powered technology with great application potential in personalized healthcare and mobile therapy.
Article
Chemistry, Physical
Haobin Wang, Shuyi Huang, Haoze Kuang, Chi Zhang, Yulu Liu, Kaihang Zhang, Xinyu Cai, Xiaozhi Wang, Jikui Luo, Zhong Lin Wang
Summary: Triboelectrification between metals, polymers, and semiconductors was investigated, revealing a universal mechanism involving both electrostatic induction and dynamic junction modulation. The outputs of triboelectrification exhibited four current/voltage peaks, two of which were attributed to electrostatic induction effects and determined by surface state densities and electron affinity differences between the materials. The other two peaks were associated with dynamic junction modulation effects and determined by charging exchange between surface states and depletion regions. While metals and polymers showed no modulation of depletion regions, only the peaks induced by electrostatic induction were observable. Semiconductors, on the other hand, exhibited additional peaks induced by junction modulation when in contact with any material type. These findings provide valuable insights for developing high-performance triboelectric nanogenerators.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Hai Li, Sooman Lim
Summary: Transparent and flexible piezoelectric nanogenerators (ST-PENGs) based on PFOES and PVDF-HFP composite films were prepared, exhibiting a higher beta-phase content and remarkable piezoelectric properties. The hydrogen bonding interaction between the PVDF-HFP matrix and the PFOES agents causes a clear transition from phase to phase. These ST-PENGs generate an excellent output voltage, power, and sensitivity, exhibiting a record-high improvement compared with previously reported PENGs. This study may provide insight into the development of transparent and flexible piezoelectric devices for high-performance self-powered electronics.
Article
Chemistry, Multidisciplinary
Qin Zhang, Fan Shen, Chen Cao, Ying Gong, Biao Wang, Zhongjie Li, Yan Peng, Quan Zhang, Chenguo Hu, Hengyu Guo
Summary: This study proposes a novel strategy of adding flexible magnet layers in the sliding-mode triboelectric nanogenerators (S-TENG) to investigate the effect of magnetic pre-stress on the S-TENG performance. The theoretical and experimental studies validate the impact of magnetic pre-stress on the MS-TENG. The aim of this research is to provide a theoretical description with validations on the effect of external pre-stresses on the performance enhancement of S-TENGs.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Hairong Long, Jie An, Shuxing Xu, Xiuhui Ni, Erming Su, Yingjin Luo, Shijie Liu, Tao Jiang
Summary: In this work, a fractal structured charge-excitation circuit for triboelectric nanogenerators (TENGs) was fabricated using diodes and capacitors. The circuit can greatly boost the output charge and current of the TENG without reverse starting. Through component and condition optimization, the fractal structured charge-excitation TENG (FSC-TENG) achieved nearly 5.8 times charge boosting and almost 16.8 times power boosting in the pulsed mode. The FSC-TENG successfully powered a hygrothermograph and was integrated into a yoga mat for harvesting human-body motion energy.
Article
Chemistry, Multidisciplinary
Haiqi Gao, Mingao Hu, Junfei Ding, Bailu Xia, Guanglu Yuan, Huasheng Sun, Qinghao Xu, Shiyu Zhao, Yawei Jiang, Hong Wu, Ming Yuan, Jiahui Li, Bingxiang Li, Jin Zhao, Dewei Rao, Yannan Xie
Summary: Contact electrification is a universal phenomenon influenced by the work function difference between materials. Experimental results demonstrate that electron transfer occurs significantly in the attractive force region when there is a large work function difference between two contacting materials.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Engineering, Environmental
Ryan Walden, Irthasa Aazem, Aswathy Babu, Suresh C. Pillai
Summary: This review examines the recent developments in textile-based triboelectric nanogenerator devices, focusing on potential materials and design strategies. It categorizes these devices based on different textile constructs and configurations, and discusses the efficiency of various materials and approaches for improving their output. The review also addresses the major challenges faced by textile-based triboelectric nanogenerator devices and discusses their prospects.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Wei-Zhi Song, Hui-Jing Qiu, Jun Zhang, Miao Yu, Seeram Ramakrishna, Zhong Lin Wang, Yun-Ze Long
Summary: The new designed DC-TENG utilizes two conductors with different electron-obtaining abilities as electrodes, allowing electrons to continuously transfer within the triboelectric layer for unidirectional electron flow. The rotation mode achieves a constant DC output and successfully drives small electronic devices.
Article
Chemistry, Multidisciplinary
Kunming Shi, Bin Chai, Haiyang Zou, Zhen Wen, Meng He, Jie Chen, Pingkai Jiang, Xingyi Huang
Summary: This study demonstrates the crucial role of material transfer in adhesive polymers in contact electrification, which boosts charge transfer and the performance of triboelectric nanogenerators (TENGs).
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Multidisciplinary Sciences
Xiong Pu, Chi Zhang, Zhong Lin Wang
Summary: This article comprehensively reviews the research progress of the triboelectric nanogenerator (TENG) as a promising mechanical-to-electrical energy conversion technology for wearable power sources and self-powered sensors. The increasing demands in multifunction require high-performance energy and sensor devices for wearable electronics. TENG, which can convert mechanical energy into electricity, has drawn extensive attention and research efforts worldwide for its potential application in wearable devices.
NATIONAL SCIENCE REVIEW
(2023)
Article
Nanoscience & Nanotechnology
Mingyan Xue, Wenbo Peng, Xuefeng Tang, Yahui Cai, Fangpei Li, Yongning He
Summary: The performance of a photodetector consisting of micropyramid structured p-Si/n-ZnO NWs heterojunction is optimized using the pyro-phototronic effect, leading to a significant increase in photoresponsivity. Furthermore, the introduction of chopper frequency and a thin film Al layer as the back electrode further improve the photocurrent and photoresponsivity. The coupling between the pyrophototronic effect and the piezo-phototronic effect is analyzed, showing a decrease in photoresponsivity and photocurrent under compressive strain.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Applied
Xiuming Mei, Xiaoxiao Wu, Fan Zhou, Yanrong Liu, Hanxu Ji, Yufeng Li, Diyao Jiang, Miao Yang, Jingjing Xu, Yuwei Qiang, Can Wang, Yu Zhang, Chi Zhang
Summary: This study used headspace solid-phase microextraction coupled with headspace GC-tandem mass spectrometry (HS-SPME-GC-MS) to screen volatile substances in infected wheat and selected a chemical marker for disease determination. Two analytical methodologies, HS-SPME-GC-MS and headspace gas chromatography with flame ionization detection (HS-GC-FID), were established to determine the trimethylamine (TMA) content. The HS-SPME-GC-MS method showed excellent sensitivity and allowed for the determination of 0.05% infected kernels among whole wheat grains.
FOOD ADDITIVES AND CONTAMINANTS PART A-CHEMISTRY ANALYSIS CONTROL EXPOSURE & RISK ASSESSMENT
(2023)
Article
Chemistry, Analytical
Yongan Ren, Ke Ge, Wei Lu, Wenbo Peng, Haiyan Che, Jianxin Ma, Changku Jia, Bo Yao
Summary: Recent studies have shown that the level of PD-L1 carried by extracellular vesicles (EVs) can be used to distinguish tumors and predict the response to immunotherapy. In this study, an EV-TdT assay was developed to isolate and detect PD-L1+ EVs. The assay selectively enriched PD-L1+ EVs in low-content samples, such as blood and excreta, and evaluated the relative abundance of PD-L1+ EVs in the total population. The results showed that PD-L1+ EVs were more abundant in the extracellular microenvironment of tumor cells compared to human plasma.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Multidisciplinary
Beibei Fan, Zhaozheng Wang, Guoxu Liu, Zheng Wang, Xianpeng Fu, Likun Gong, Chi Zhang
Summary: A robust flexible textile tribovoltaic nanogenerator based on a 2D dynamic heterojunction of 2H-MoS2/Ta4C3 has been developed. During the friction process, an electric field is generated and a significant number of electron-hole pairs are excited to generate direct current through the dynamic heterojunction. The output power density and robustness of the nanogenerator are investigated.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Engineering, Environmental
Jia Xin Liu, Guoxu Liu, Zi Hao Guo, Weiguo Hu, Chi Zhang, Xiong Pu
Summary: This work presents a stretchable electret-based triboelectric nano-generator (SEB-TENG) for stretchable and wearable electronics. The device exhibits high stretchability, high charge density, and can be used to power electronic devices. A power management module (PMM) is also designed to optimize energy utilization.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Yuhan Qin, Xianpeng Fu, Yuan Lin, Zheng Wang, Jie Cao, Chi Zhang
Summary: This study proposes a self-powered IoT sensing node based on a triboelectric nanogenerator (TENG) for sustainable environmental monitoring. The TENG, powered by wind energy, converts weak electrical energy into a stable direct current (DC) 2.5V voltage to operate the IoT sensing node. The node can activate when the storage energy exceeds 4.4V, and the monitoring data is transmitted to the IoT cloud platform using narrowband IoT (NB-IoT) module. This work offers a universal strategy for sustainable IoT sensing nodes powered by environmental micro-nano mechanical energy, with potential applications in IoT, big data, and environmental monitoring.
Article
Materials Science, Multidisciplinary
Jinming Zhang, Guojiao Xiang, Yue Liu, Jiahui Zhang, Wenbo Peng, Yijian Zhou, Zhiang Yue, Xian Zhang, Chengle Song, Yidan Jin, Peiyao Wang, Hui Wang, Yang Zhao
Summary: With the increasing impact of pollution caused by the extensive use of unsustainable fossil energy on the environment, the development of clean energy, particularly solar energy, is gaining momentum. CuO, a p-type semiconductor material with excellent performance, shows promise as a competitive photovoltaic material in optoelectronic devices. Through various experiments and analyses, we explored the effects of sputtering power on the quality of CuO thin films, and studied the crystal structure, surface morphology, optical and electrical properties. We also fabricated a heterojunction solar cell and analyzed its electrical properties at different temperatures, achieving high rectification characteristics typical of diodes.
Article
Chemistry, Physical
Haobin Wang, Shuyi Huang, Haoze Kuang, Chi Zhang, Yulu Liu, Kaihang Zhang, Xinyu Cai, Xiaozhi Wang, Jikui Luo, Zhong Lin Wang
Summary: Triboelectrification between metals, polymers, and semiconductors was investigated, revealing a universal mechanism involving both electrostatic induction and dynamic junction modulation. The outputs of triboelectrification exhibited four current/voltage peaks, two of which were attributed to electrostatic induction effects and determined by surface state densities and electron affinity differences between the materials. The other two peaks were associated with dynamic junction modulation effects and determined by charging exchange between surface states and depletion regions. While metals and polymers showed no modulation of depletion regions, only the peaks induced by electrostatic induction were observable. Semiconductors, on the other hand, exhibited additional peaks induced by junction modulation when in contact with any material type. These findings provide valuable insights for developing high-performance triboelectric nanogenerators.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Sicheng Dong, Tianzhao Bu, Zhaozheng Wang, Yuan Feng, Guoxu Liu, Jianhua Zeng, Zhihao Wang, Jie Cao, Zhi Zhang, Feng Liu, Chi Zhang
Summary: A freestanding-mode TVNG (FTVNG) based on metal, p-Si, and n-Si is proposed, which can generate opposite DC outputs by rubbing against p-Si and n-Si, enabling energy harvesting from moving objects without attached wires. The electrical output characteristics and influence laws of the tribovoltaic effect are studied under different working parameters. FTVNG is integrated into a traditional rolling bearing, demonstrating its application potential in basic components and parts.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Songtao Hu, Tianyu Han, Youchao Qi, Chi Zhang, Xi Shi, Zhike Peng
Summary: In this study, a self-sensing solution is proposed using triboelectric nanogenerators (TENGs) as self-aware measurement points in a multi-span rotor system. Deep learning is employed to analyze the triboelectric current signals, and ResNet 18 is found to be effective in extracting feature patterns for misalignment fault identification with a diagnostic accuracy of 90.28%. This is the first demonstration of TENGs for misalignment fault identification in a multi-span rotor system, providing a promising approach for health condition monitoring.
Article
Chemistry, Physical
Songtao Hu, Xijia Ding, Beibei Fan, Chi Zhang, Bo Zhang, Xi Shi, Zhike Peng
Summary: This study reports a solid-liquid triboelectric nanogenerator (TENG) sensing technique for position sensing of inkjet printing. A self-aware array assembled by four single-electrode-mode TENG units can achieve droplet positioning based on the triboelectric output. The open-circuit voltage is considered as the key index to precisely characterize the deposition positioning of jetting droplets.
Article
Chemistry, Physical
Yan Shi, Heran Li, Xianpeng Fu, Ruifei Luan, Yixuan Wang, Na Wang, Zhibo Sun, Yanxia Niu, Changhui Wang, Chi Zhang, Zhong Lin Wang
Summary: In this study, an integrated bi-functional pneumatic sensor was proposed, which utilizes friction to generate static electricity and voltage for simultaneous monitoring of position and velocity of an air cylinder. The sensor can accurately measure the rotation angle and angular velocity, enabling precise pneumatic monitoring and servo control.
Review
Chemistry, Multidisciplinary
Fangpei Li, Wenbo Peng, Yitong Wang, Mingyan Xue, Yongning He
Summary: The combination of pyroelectricity and optoelectronic has led to the emergence of a new research field called Pyro-Phototronic. The pyro-phototronic effect has made significant progress in advanced photodetectors and light energy harvesting, and shows great potential for various applications.
Article
Chemistry, Multidisciplinary
Pengfan Wu, Fayang Wang, Shiwei Xu, Tao Liu, Youchao Qi, Xue Zhao, Chi Zhang, Xiaojing Mu
Summary: Sensors based on triboelectric nanogenerators have attracted worldwide attention due to their low cost and self-powering advantages. A highly sensitive vibration sensor based on TENG with ultrawide frequency response (HSVS-TENG) is proposed, which integrates a quasi-zero stiffness structure to optimize performance. The sensor demonstrates the ability to measure vibrations in the frequency range of 2.5 to 4000 Hz, with sensitivity ranging from 0.32 to 134.9 V g(-1). Machine-learning algorithms enable the self-powered sensor to accurately monitor the running state and fault type of key components with a recognition accuracy of 98.9%.
