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Yang N, Li Y, Xu Z, Zhu Y, He Q, Wang Z, Zhang X, Liu J, Liu C, Wang Y, Zhou M, Cheng T, Wang ZL. A Blade-Type Triboelectric-Electromagnetic Hybrid Generator with Double Frequency Up-Conversion Mechanism for Harvesting Breeze Wind Energy. ACS APPLIED MATERIALS & INTERFACES 2024; 16:33404-33415. [PMID: 38904481 PMCID: PMC11231971 DOI: 10.1021/acsami.4c04377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2024] [Revised: 05/26/2024] [Accepted: 06/14/2024] [Indexed: 06/22/2024]
Abstract
Triboelectric nanogenerators (TENGs) have garnered substantial attention in breeze wind energy harvesting. However, how to improve the output performance and reduce friction and wear remain challenging. To this end, a blade-type triboelectric-electromagnetic hybrid generator (BT-TEHG) with a double frequency up-conversion (DFUC) mechanism is proposed. The DFUC mechanism enables the TENG to output a high-frequency response that is 15.9 to 300 times higher than the excitation frequency of 10 to 200 rpm. Coupled with the collisions between tribomaterials, a higher surface charge density and better generating performance are achieved. The magnetization direction and dimensional parameters of the BT-TEHG were optimized, and its generating characteristics under varying rotational speeds and electrical boundary conditions were studied. At wind speeds of 2.2 and 10 m/s, the BT-TEHG can generate, respectively, power of 1.30 and 19.01 mW. Further experimentation demonstrates its capacity to charge capacitors, light up light emitting diodes (LEDs), and power wireless temperature and humidity sensors. The demonstrations show that the BT-TEHG has great potential applications in self-powered wireless sensor networks (WSNs) for environmental monitoring of intelligent agriculture.
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Affiliation(s)
- Na Yang
- School
of Mechanical Engineering, Hangzhou Dianzi
University, Hangzhou 310018, China
| | - Yingxuan Li
- School
of Mechanical Engineering, Hangzhou Dianzi
University, Hangzhou 310018, China
| | - Zhenlong Xu
- School
of Mechanical Engineering, Hangzhou Dianzi
University, Hangzhou 310018, China
| | - Yongkang Zhu
- School
of Mechanical Engineering, Hangzhou Dianzi
University, Hangzhou 310018, China
| | - Qingkai He
- School
of Mechanical Engineering, Hangzhou Dianzi
University, Hangzhou 310018, China
| | - Ziyi Wang
- School
of Mechanical Engineering, Hangzhou Dianzi
University, Hangzhou 310018, China
| | - Xueting Zhang
- School
of Mechanical Engineering, Hangzhou Dianzi
University, Hangzhou 310018, China
| | - Jingbiao Liu
- School
of Mechanical Engineering, Hangzhou Dianzi
University, Hangzhou 310018, China
| | - Chaoran Liu
- Ministry
of Education Engineering Research Center of Smart Microsensors and
Microsystems, College of Electronics and Information, Hangzhou Dianzi University, Hangzhou 310018, China
| | - Yun Wang
- School
of Mechanical Engineering, Hangzhou Dianzi
University, Hangzhou 310018, China
| | - Maoying Zhou
- School
of Mechanical Engineering, Hangzhou Dianzi
University, Hangzhou 310018, China
| | - Tinghai Cheng
- Beijing
Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 101400, China
| | - Zhong Lin Wang
- Beijing
Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 101400, China
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Cao H, Tang H, Zhang Z, Kong L, Tang M, Du X, Mutsuda H, Tairab AM. Sustainable Sea of Internet of Things: Wind Energy Harvesting System for Unmanned Surface Vehicles. ACS APPLIED MATERIALS & INTERFACES 2024; 16:28694-28708. [PMID: 38768307 DOI: 10.1021/acsami.4c05142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
Harvesting wind energy from the environment and integrating it with the internet of things and artificial intelligence to enable intelligent ocean environment monitoring are effective approach. There are some challenges that limit the performance of wind energy harvesters, such as the larger start-up torque and the narrow operational wind speed range. To address these issues, this paper proposes a wind energy harvesting system with a self-regulation strategy based on piezoelectric and electromagnetic effects to achieve state monitoring for unmanned surface vehicles (USVs). The proposed energy harvesting system comprises eight rotation units with centrifugal adaptation and four piezoelectric units with a magnetic coupling mechanism, which can further reduce the start-up torque and expand the wind speed range. The dynamic model of the energy harvester with the centrifugal effect is explored, and the corresponding structural parameters are analyzed. The simulation and experimental results show that it can obtain a maximum average power of 23.25 mW at a wind speed of 8 m/s. Furthermore, three different magnet configurations are investigated, and the optimal configuration can effectively decrease the resistance torque by 91.25% compared with the traditional mode. A prototype is manufactured, and the test result shows that it can charge a 2200 μF supercapacitor to 6.2 V within 120 s, which indicates that it has a great potential to achieve the self-powered low-power sensors. Finally, a deep learning algorithm is applied to detect the stability of the operation, and the average accuracy reached 95.33%, which validates the feasibility of the state monitoring of USVs.
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Affiliation(s)
- Hao Cao
- School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, P. R. China
- Yibin Research Institute, Southwest Jiaotong University, Yibin 64000, P. R. China
- Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi, Hiroshima 7390046, Japan
| | - Hongjie Tang
- School of Information Science and Technology, Southwest Jiaotong University, Chengdu 610031, P. R. China
- Yibin Research Institute, Southwest Jiaotong University, Yibin 64000, P. R. China
| | - Zutao Zhang
- Chengdu Technological University, Chengdu 611730, P. R. China
| | - Lingji Kong
- School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, P. R. China
- Yibin Research Institute, Southwest Jiaotong University, Yibin 64000, P. R. China
| | - Minfeng Tang
- School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, P. R. China
- Yibin Research Institute, Southwest Jiaotong University, Yibin 64000, P. R. China
| | - Xinru Du
- Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi, Hiroshima 7390046, Japan
| | - Hidemi Mutsuda
- Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi, Hiroshima 7390046, Japan
| | - Alaeldin M Tairab
- School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, P. R. China
- Yibin Research Institute, Southwest Jiaotong University, Yibin 64000, P. R. China
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Pang Y, He T, Liu S, Zhu X, Lee C. Triboelectric Nanogenerator-Enabled Digital Twins in Civil Engineering Infrastructure 4.0: A Comprehensive Review. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2306574. [PMID: 38520068 PMCID: PMC11132078 DOI: 10.1002/advs.202306574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Revised: 10/18/2023] [Indexed: 03/25/2024]
Abstract
The emergence of digital twins has ushered in a new era in civil engineering with a focus on achieving sustainable energy supply, real-time sensing, and rapid warning systems. These key development goals mean the arrival of Civil Engineering 4.0.The advent of triboelectric nanogenerators (TENGs) demonstrates the feasibility of energy harvesting and self-powered sensing. This review aims to provide a comprehensive analysis of the fundamental elements comprising civil infrastructure, encompassing various structures such as buildings, pavements, rail tracks, bridges, tunnels, and ports. First, an elaboration is provided on smart engineering structures with digital twins. Following that, the paper examines the impact of using TENG-enabled strategies on smart civil infrastructure through the integration of materials and structures. The various infrastructures provided by TENGs have been analyzed to identify the key research interest. These areas encompass a wide range of civil infrastructure characteristics, including safety, efficiency, energy conservation, and other related themes. The challenges and future perspectives of TENG-enabled smart civil infrastructure are briefly discussed in the final section. In conclusion, it is conceivable that in the near future, there will be a proliferation of smart civil infrastructure accompanied by sustainable and comprehensive smart services.
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Affiliation(s)
- Yafeng Pang
- Key Laboratory of Road and Traffic Engineering of Ministry of EducationTongji UniversityShanghai200092P. R. China
| | - Tianyiyi He
- Department of Electrical and Computer EngineeringNational University of Singapore4 Engineering Drive 3Singapore117576Singapore
- Center for Intelligent Sensors and MEMSNational University of SingaporeBlock E6 #05‐11, 5 Engineering Drive 1Singapore117608Singapore
| | - Shuainian Liu
- Key Laboratory of Road and Traffic Engineering of Ministry of EducationTongji UniversityShanghai200092P. R. China
| | - Xingyi Zhu
- Key Laboratory of Road and Traffic Engineering of Ministry of EducationTongji UniversityShanghai200092P. R. China
| | - Chengkuo Lee
- Department of Electrical and Computer EngineeringNational University of Singapore4 Engineering Drive 3Singapore117576Singapore
- Center for Intelligent Sensors and MEMSNational University of SingaporeBlock E6 #05‐11, 5 Engineering Drive 1Singapore117608Singapore
- National University of Singapore Suzhou Research Institute (NUSRI)Suzhou Industrial ParkSuzhou215123China
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Wang H, Xiong B, Zhang Z, Zhang H, Azam A. Small wind turbines and their potential for internet of things applications. iScience 2023; 26:107674. [PMID: 37711647 PMCID: PMC10497799 DOI: 10.1016/j.isci.2023.107674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/16/2023] Open
Abstract
Wind energy is crucial for meeting climate and energy sustainability targets. Small wind turbines (SWTs) have gained significant attention due to their size and adaptability. These turbines have potential for Internet of Things (IoT) applications, particularly in powering large areas and low-power devices. This review examines SWTs for IoT applications, providing an extensive overview of their development, including wind energy rectifiers, power generation mechanisms, and IoT applications. The paper summarizes and compares different types of wind energy rectifiers, explores recent advancements and representative work, and discusses applicable generator systems such as electromagnetic, piezoelectric, and triboelectric nanogenerators. In addition, it thoroughly reviews the latest research on IoT application scenarios, including transportation, urban environments, intelligent agriculture, and self-powered wind sensing. Lastly, the paper identifies future research directions and emphasizes the potential of interdisciplinary technologies in driving SWT development.
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Affiliation(s)
- Hao Wang
- School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, P.R. China
- Yibin Research Institute, Southwest Jiaotong University, Yibin 644000, P.R. China
| | - Bendong Xiong
- School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, P.R. China
- Yibin Research Institute, Southwest Jiaotong University, Yibin 644000, P.R. China
| | - Zutao Zhang
- School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, P.R. China
| | - Hexiang Zhang
- School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, P.R. China
- Yibin Research Institute, Southwest Jiaotong University, Yibin 644000, P.R. China
| | - Ali Azam
- School of Mechanical Engineering, Southwest Jiaotong University, Chengdu 610031, P.R. China
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Cao X, Xiong Y, Sun J, Xie X, Sun Q, Wang ZL. Multidiscipline Applications of Triboelectric Nanogenerators for the Intelligent Era of Internet of Things. NANO-MICRO LETTERS 2022; 15:14. [PMID: 36538115 PMCID: PMC9768108 DOI: 10.1007/s40820-022-00981-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 11/04/2022] [Indexed: 06/02/2023]
Abstract
In the era of 5G and the Internet of things (IoTs), various human-computer interaction systems based on the integration of triboelectric nanogenerators (TENGs) and IoTs technologies demonstrate the feasibility of sustainable and self-powered functional systems. The rapid development of intelligent applications of IoTs based on TENGs mainly relies on supplying the harvested mechanical energy from surroundings and implementing active sensing, which have greatly changed the way of human production and daily life. This review mainly introduced the TENG applications in multidiscipline scenarios of IoTs, including smart agriculture, smart industry, smart city, emergency monitoring, and machine learning-assisted artificial intelligence applications. The challenges and future research directions of TENG toward IoTs have also been proposed. The extensive developments and applications of TENG will push forward the IoTs into an energy autonomy fashion.
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Affiliation(s)
- Xiaole Cao
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400, People's Republic of China
- School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
| | - Yao Xiong
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400, People's Republic of China
- School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
| | - Jia Sun
- School of Physics and Electronics, Central South University, Changsha, 410083, People's Republic of China
| | - Xiaoyin Xie
- School of Chemistry and Chemical Engineering, Hubei Polytechnic University, Huangshi, 435003, People's Republic of China.
| | - Qijun Sun
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400, People's Republic of China.
- School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China.
- Shandong Zhongke Naneng Energy Technology Co., Ltd., Dongying, 7061, People's Republic of China.
| | - Zhong Lin Wang
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400, People's Republic of China.
- School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing, 100049, People's Republic of China.
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA.
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Zhang J, Chen P, Zu L, Yang J, Sun Y, Li H, Chen B, Wang ZL. Self-Powered High-Voltage Recharging System for Removing Noxious Tobacco Smoke by Biomimetic Hairy-Contact Triboelectric Nanogenerator. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2202835. [PMID: 35871577 DOI: 10.1002/smll.202202835] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Revised: 07/04/2022] [Indexed: 06/15/2023]
Abstract
The most common size range of particulate matter (PM) in tobacco smoke is 1.0 to 5.0 microns; however, a high number of the most harmful PM is as small as 0.5 micron that is a serious threat to human health, and it is difficult to remove. There is an urgent need to develop a new purification technology for high-efficiency removing tobacco smoke with easily construction and low cost. Here, a method of self-powered high-voltage recharging system is demonstrated by designing biomimetic hairy-contact triboelectric nanogenerator (BHC-TENG) for long-lasting adsorption with a wide range from PM 0.5 to PM 10. The open-circuit voltage of BHC-TENGs reaches 8.42 KV, which can continuously charge injection to the melt-blown fabric, whose surface potential is able to maintain nearly 260 V level and create a uniform electrostatic adsorption field on the surface. This high-voltage recharging system reduces the concentration of PMs to World Health Organization (WHO) standards, maintaining the purification efficiency of PM 0.5- PM 10 persistently over 90%.
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Affiliation(s)
- Jianjun Zhang
- College of Chemistry and Chemical Engineering, Center on Nanoenergy Research, Guangxi University, Nanning, 530004, P. R. China
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400, P. R. China
| | - Pengfei Chen
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400, P. R. China
- School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Lulu Zu
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400, P. R. China
- School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Jin Yang
- College of Chemistry and Chemical Engineering, Center on Nanoenergy Research, Guangxi University, Nanning, 530004, P. R. China
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400, P. R. China
| | - Yanshuo Sun
- College of Chemistry and Chemical Engineering, Center on Nanoenergy Research, Guangxi University, Nanning, 530004, P. R. China
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400, P. R. China
| | - Hao Li
- College of Chemistry and Chemical Engineering, Center on Nanoenergy Research, Guangxi University, Nanning, 530004, P. R. China
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400, P. R. China
| | - Baodong Chen
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400, P. R. China
- School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
- Institute of Applied Nanotechnology, Jiaxing, Zhejiang, 314031, P. R. China
| | - Zhong Lin Wang
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 101400, P. R. China
- School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332-0245, USA
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Liu S, Liu Y, Chen Y, Wang S, Men C, Gao S. Novel 3D Printed Vortex-like Flexible Roller-Compacted Triboelectric Nanogenerator for Self-Powered Electrochemical Degradation of Organic Contaminants. ACS APPLIED MATERIALS & INTERFACES 2022; 14:17426-17433. [PMID: 35394737 DOI: 10.1021/acsami.2c01750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
It is an ideal way to use triboelectric nanogenerators (TENGs) to capture energy from the environment for the degradation of organic contaminants in water as a zero-carbon pathway. However, there is an urgent need to further develop TENGs with a simple structure and high output power. Herein, a novel TENG with a vortex-like flexible self-recovery blades of inner stator (denoted as VFR-TENG) is designed and manufactured with the assistance of a fused deposition modeling 3D printing technology. With the rotation of the outer rotor, a facile rotating contact-separation mode is achieved by the alternating arrangement of the flexible self-recovery blades. The contact tightness of the friction layer, a key factor for the transfer of charge density, can be easily adjusted by the thickness and arrangement style of the flexible self-recovery blades. The regulation of material elasticity and rotational frequency on the output characteristics is further investigated based on the special flexible structure. The VFR-TENG exhibits an instantaneous short-circuit current of 350 μA, an open-circuit voltage of 650 V, a transferred charge of 1.1 μC, and an optimum output power density of 4.4 W·m-2. This high-performance VFR-TENG is used for electrochemical degradation systems, which achieves excellent degradation efficiencies of 88.9, 91.7, and 94.1% for methylene blue, methyl orange, and malachite green within 150 min, respectively. This work provides a new idea for the design of flexible self-recovery contact-separation TENGs, which is of great inspiration for the exploitation of TENGs with both the high peak current and high-frequency characteristics for efficient water treatment.
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Affiliation(s)
- Shizhe Liu
- School of Materials Science and Engineering, Henan Normal University, Xinxiang, Henan 453007, P. R. China
| | - Yang Liu
- School of Materials Science and Engineering, Henan Normal University, Xinxiang, Henan 453007, P. R. China
| | - Ye Chen
- School of Materials Science and Engineering, Henan Normal University, Xinxiang, Henan 453007, P. R. China
| | - Shuaitong Wang
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, P. R. China
| | - Chuanbin Men
- School of Materials Science and Engineering, Henan Normal University, Xinxiang, Henan 453007, P. R. China
| | - Shuyan Gao
- School of Materials Science and Engineering, Henan Normal University, Xinxiang, Henan 453007, P. R. China
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Zhang S, Qu C, Xiao Y, Liu H, Song G, Xu Y. Flexible alternating current electroluminescent devices integrated with high voltage triboelectric nanogenerators. NANOSCALE 2022; 14:4244-4253. [PMID: 35244117 DOI: 10.1039/d1nr08203e] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Flexible alternating current electroluminescent (ACEL) devices have attracted growing interest as promising wearable displays for their uniformity of light emission, low power consumption, and excellent reliability. However, the requirement of high-voltage power sources for driving ACEL devices greatly impedes their portability and commercialization. Here, we developed flexible ACEL devices integrated with high output-voltage triboelectric nanogenerators (TENG) using easy and low-cost crumpled Al electrodes. The output voltage and current could reach as high as 490 V and 71.74 μA, corresponding to the maximum instantaneous output power density of 1.503 mW cm-2, which was demonstrated to power an integrated flexible ACEL patterned display. In addition, through signal acquisition and transmission, ACEL can display the compression frequency of TENG in real time. Such self-powered ACEL devices are very promising as flexible displays in wearable electronics.
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Affiliation(s)
- Shaochun Zhang
- Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China.
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Changming Qu
- Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China.
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yu Xiao
- Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China.
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Hanyun Liu
- Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China.
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Guofeng Song
- Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China.
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yun Xu
- Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China.
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, 100049, China
- Beijing Key Laboratory of Inorganic Stretchable and Flexible Information Technology, Beijing 100083, China
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