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Kumar A, Gupta V, Malik P, Ram S, Mandal D. Electrospun polarity-controlled molecular orientation for synergistic performance of an artifact-free piezoelectric anisotropic sensor. MATERIALS HORIZONS 2024. [PMID: 38953680 DOI: 10.1039/d4mh00540f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/04/2024]
Abstract
Anisotropy in mechanical, optical and thermal sensors in a spatial direction has many applications in health care, robotics, aerospace, and tissue engineering. In particular, wearable and implantable sensors respond to stretching and bending strains that probe mechanical energy and track physiological signals. Hence, the development of anisotropic pressure sensors with true piezoelectric (PE) signals is of utmost importance to achieve efficient devices. Herein, a simple and efficient method is developed for high longitudinal and transverse responses, with an approach to isolating a true piezoelectric signal. The electrospun (ES) polarity of oriented dipoles inside flexible fibers gives rise to a high longitudinal/transverse PE response of both lateral and transverse strains. Nanofibers of poly(vinylidene-chlorotrifluoroethylene) copolymers contain poled dipoles, up to 86%, that promote an enhanced PE coefficient of 42 pm V-1 in the case of negative polarity-based electrospinning. It is 40% higher in composition than the commonly adopted positive polarity-biased electrospinning process. We demonstrated the advantage of such a high PE coefficient by the enhanced sensitivity of the longitudinal (VLs = 0.3 V kPa-1, ILs = 0.07 μA kPa-1) as well as transverse (VTs = 1.0 V kPa-1, ITs = 0.8 μA kPa-1) PE response. To counter the ambiguity of high transverse response as compared to longitudinal in electrospun fiber-based devices, a facile method is proposed to isolate the ferroelectret, triboelectric and piezoelectric signals in a fiber-based hybrid device with their independent charge generation mechanisms.
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Affiliation(s)
- Ajay Kumar
- Quantum Materials and Devices Unit, Institute of Nano Science and Technology, Knowledge City, Sector 81, Mohali 140306, India
| | - Varun Gupta
- Quantum Materials and Devices Unit, Institute of Nano Science and Technology, Knowledge City, Sector 81, Mohali 140306, India
| | - Pinki Malik
- Quantum Materials and Devices Unit, Institute of Nano Science and Technology, Knowledge City, Sector 81, Mohali 140306, India
| | - Shanker Ram
- Materials Science Centre, Indian Institute of Technology, Kharagpur, 721 302 WB, India.
| | - Dipankar Mandal
- Quantum Materials and Devices Unit, Institute of Nano Science and Technology, Knowledge City, Sector 81, Mohali 140306, India
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Hu H, Song J, Zhong Y, Cao J, Han L, Zhang Z, Cheng G, Ding J. High Sensitivity Triboelectric Based Flexible Self-Powered Tactile Sensor with Bionic Fingerprint Ring Structure. ACS Sens 2024; 9:2907-2914. [PMID: 38759108 DOI: 10.1021/acssensors.4c00009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/19/2024]
Abstract
Flexible self-powered tactile sensors, with applications spanning wearable electronics, human-machine interaction, prosthetics, and soft robotics, offer real-time feedback on tactile interactions in diverse environments. Despite advances in their structural development, challenges persist in sensitivity and robustness, particularly when additional functionalities, such as high transparency and stretchability. In this study, we present a novel approach integrating a bionic fingerprint ring structure with a PVDF-HFP/AgNWs composite fiber electrode membrane, fabricated via 3D printing technology and electrospinning, respectively, yielding a triboelectric nanogenerator (TENG)-based self-powered tactile sensor. The sensor demonstrates high sensitivity (5.84 V/kPa in the 0-10 kPa range) and rapid response time (10 ms), attributed to the microring texture on its surface, and exhibits exceptional robustness, maintaining electrical output integrity even after 24,000 cycles of loading. These findings highlight the potential of the microring structures in addressing critical challenges in flexible sensor technology.
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Affiliation(s)
- Hongwei Hu
- Institute of Intelligent Flexible Mechatronics, Jiangsu University, Zhenjiang 212013, China
| | - Jie Song
- Institute of Intelligent Flexible Mechatronics, Jiangsu University, Zhenjiang 212013, China
| | - Yan Zhong
- Institute of Intelligent Flexible Mechatronics, Jiangsu University, Zhenjiang 212013, China
| | - Jie Cao
- Institute of Intelligent Flexible Mechatronics, Jiangsu University, Zhenjiang 212013, China
| | - Lei Han
- Institute of Intelligent Flexible Mechatronics, Jiangsu University, Zhenjiang 212013, China
| | - Zhongqiang Zhang
- Institute of Intelligent Flexible Mechatronics, Jiangsu University, Zhenjiang 212013, China
| | - Guanggui Cheng
- Institute of Intelligent Flexible Mechatronics, Jiangsu University, Zhenjiang 212013, China
| | - Jianning Ding
- Institute of Intelligent Flexible Mechatronics, Jiangsu University, Zhenjiang 212013, China
- School of Mechanical Engineering, Yangzhou University, Yangzhou 225009, China
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Yang L, Ma Z, Tian Y, Meng B, Peng Z. Progress on Self-Powered Wearable and Implantable Systems Driven by Nanogenerators. MICROMACHINES 2021; 12:666. [PMID: 34200150 PMCID: PMC8227325 DOI: 10.3390/mi12060666] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 06/04/2021] [Accepted: 06/04/2021] [Indexed: 12/25/2022]
Abstract
With the rapid development of the internet of things (IoT), sustainable self-powered wireless sensory systems and diverse wearable and implantable electronic devices have surged recently. Under such an opportunity, nanogenerators, which can convert continuous mechanical energy into usable electricity, have been regarded as one of the critical technologies for self-powered systems, based on the high sensitivity, flexibility, and biocompatibility of piezoelectric nanogenerators (PENGs) and triboelectric nanogenerators (TENGs). In this review, we have thoroughly analyzed the materials and structures of wearable and implantable PENGs and TENGs, aiming to make clear how to tailor a self-power system into specific applications. The advantages in TENG and PENG are taken to effectuate wearable and implantable human-oriented applications, such as self-charging power packages, physiological and kinematic monitoring, in vivo and in vitro healing, and electrical stimulation. This review comprehensively elucidates the recent advances and future outlook regarding the human body's self-powered systems.
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Affiliation(s)
| | | | | | - Bo Meng
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China; (L.Y.); (Z.M.); (Y.T.); (Z.P.)
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Lee S, Kim EH, Yu S, Kim H, Park C, Lee SW, Han H, Jin W, Lee K, Lee CE, Jang J, Koo CM, Park C. Polymer-Laminated Ti 3C 2T X MXene Electrodes for Transparent and Flexible Field-Driven Electronics. ACS NANO 2021; 15:8940-8952. [PMID: 33983015 DOI: 10.1021/acsnano.1c01621] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
MXenes (Ti3C2TX) are two-dimensional transition-metal carbides and carbonitrides with high conductivity and optical transparency. However, transparent MXene electrodes with high environmental stability suitable for various flexible organic electronic devices have rarely been demonstrated. By laminating a thin polymer film onto a solution-processed MXene layer to protect the MXene film from harsh environmental conditions, we present transparent and flexible MXene electronic devices. A thin polymer layer spin-coated onto a transparent MXene electrode provides environmental stability even under air exposure longer than 7 d at high temperatures (up to 70 °C) and humidity levels (up to 50%) without degrading the transparency of the electrode. The resulting polymer-laminated (PL) MXene electrode facilitates the development of a variety of field-driven photoelectronic devices by exploiting the electric field exerted between the MXene layer and the counter electrode through the insulating polymer. Field-induced electroluminescent displays, based on both organic and inorganic phosphors, with PL-MXene electrodes are demonstrated with high transparency and mechanical flexibility. Furthermore, our PL-MXene electrode exhibits high versatility through successful implementation in capacitive-type pressure sensors and triboelectric nanogenerators, resulting in field-driven sensing and energy harvesting electronic devices with excellent operation reliability.
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Affiliation(s)
- Seokyeong Lee
- Department of Materials Science and Engineering, Yonsei University, Yonsei-ro 50, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Eui Hyuk Kim
- Department of Materials Science and Engineering, Yonsei University, Yonsei-ro 50, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Seunggun Yu
- Insulation Materials Research Center, Korea Electrotechnology Research Institute, Bulmosan-ro 10-gil 12, Seongsan-gu, Changwon-si, Gyeongsangnam-do 51543, Korea
| | - Hyerim Kim
- Materials Architecturing Research Centre, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, Korea
| | - Chanho Park
- Department of Materials Science and Engineering, Yonsei University, Yonsei-ro 50, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Seung Won Lee
- Department of Materials Science and Engineering, Yonsei University, Yonsei-ro 50, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Hyowon Han
- Department of Materials Science and Engineering, Yonsei University, Yonsei-ro 50, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Wookyoung Jin
- Department of Materials Science and Engineering, Yonsei University, Yonsei-ro 50, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Kyuho Lee
- Department of Materials Science and Engineering, Yonsei University, Yonsei-ro 50, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Chang Eun Lee
- Department of Materials Science and Engineering, Yonsei University, Yonsei-ro 50, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Jihye Jang
- Department of Materials Science and Engineering, Yonsei University, Yonsei-ro 50, Seodaemun-gu, Seoul 03722, Republic of Korea
| | - Chong Min Koo
- Materials Architecturing Research Centre, Korea Institute of Science and Technology (KIST), Seoul 02792, Korea
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul 02841, Korea
| | - Cheolmin Park
- Department of Materials Science and Engineering, Yonsei University, Yonsei-ro 50, Seodaemun-gu, Seoul 03722, Republic of Korea
- Spin Convergence Research Center, Korea Institute of Science and Technology (KIST), Seoul 02792, Republic of Korea
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Tat T, Libanori A, Au C, Yau A, Chen J. Advances in triboelectric nanogenerators for biomedical sensing. Biosens Bioelectron 2020; 171:112714. [PMID: 33068881 DOI: 10.1016/j.bios.2020.112714] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Revised: 10/06/2020] [Accepted: 10/07/2020] [Indexed: 12/17/2022]
Abstract
Biomedical sensors have been essential in improving healthcare outcomes over the past 30 years, though limited power source access and user wearability restraints have prevented them from taking a constant and active biomedical sensing role in our daily lives. Triboelectric nanogenerators (TENGs) have demonstrated exceptional capabilities and versatility in delivering self-powered and wear-optimized biomedical sensors, and are paving the way for a novel platform technology able to fully integrate into the developing 5G/Internet-of-Things ecosystem. This novel paradigm of TENG-based biomedical sensors aspires to provide ubiquitous and omnipresent real-time biomedical sensing for us all. In this review, we cover the remarkable developments in TENG-based biomedical sensing which have arisen in the last octennium, focusing on both in-body and on-body biomedical sensing solutions. We begin by covering TENG as biomedical sensors in the most relevant, mortality-associated clinical fields of pneumology and cardiology, as well as other organ-related biomedical sensing abilities including ambulation. We also include an overview of ambient biomedical sensing as a field of growing interest in occupational health monitoring. Finally, we explore TENGs as power sources for third party biomedical sensors in a number of fields, and conclude our review by focusing on the future perspectives of TENG biomedical sensors, highlighting key areas of attention to fully translate TENG-based biomedical sensors into clinically and commercially viable digital and wireless consumer and health products.
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Affiliation(s)
- Trinny Tat
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Alberto Libanori
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Christian Au
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Andy Yau
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Jun Chen
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA 90095, USA.
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