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High-Performance Stretchable Piezo-Electrically Enhanced Hybrid Triboelectric Nanogenerator Generated Maxwell's Displacement Current Towards Underwater Wireless Communication Assisted Self-Powered Biomechanical Signal Monitoring

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SSRN 2024年

作者： Mahanty, Biswajit Ghosh, Sujoy Kumar Lee, Dong-Weon MEMS and Nanotechnology Laboratory School of Mechanical Engineering Chonnam National University Gwangju61186 Korea Republic of Department of Condensed Matter Physics and Material Sciences S.N. Bose National Centre for Basic Sciences Block JD Sector III Salt Lake Kolkata7000106 India Center for Next-Generation Sensor Research and Development Chonnam National University Gwangju61186 Korea Republic of Advanced Medical Device Research Center for Cardiovascular Disease Chonnam National University 77 Yongbong-ro Buk-gu Gwangju61186 Korea Republic of

This study proposes an underwater wireless communication approach for transmission of biomechanical signals that relies on Maxwell's displacement current generated by a stretchable piezoelectric-enhanced triboelectric hybrid nanogenerator (PET-HNG). A high performing nano-/micro-composite film was prepared by embedding MXene nanosheets and ferro-/piezo-electric LiNbO3 microparticles into Ecoflex polymer matrix. The MXene sheets function as a micro capacitor network while LiNbO3 microparticles play a crucial role in the resulting dipole orientation and electrical polarization enhancing surface charge density to improve the triboelectric energy harvesting performance. The realized PET-HNG using this composite film shows greatly enhanced output performance in comparison to piezoelectric and triboelectric nanogenerators individually, with open circuit output voltage of 455 V, short circuit current of 140 µA, instantaneous power density (P) of 15.6 W m-2 and energy conversion efficiency of 78.5%. Indeed, the PET-HNG shows superior output performance stability even after releasing the stretching strain (30% for 20 times), which makes it a promising self-powered wearable sensor for real-time monitoring of biomechanical signals from human body movement. The proposed stretchable PET-HNG can promote the development of self-powered intelligent wearable sensors and flexible electronics. © 2024, The Authors. All rights reserved.

关键词： Nanogenerators

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High-Performance Polyaniline-Coated Electrospun P(Vdf-Trfe)/Batio3 Nanofiber-Based Flexible Piezoelectric Nanogenerator

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SSRN 2023年

作者： Mahanty, Biswajit Ghosh, Sujoy Kumar Lee, Dong-Weon MEMS and Nanotechnology Laboratory School of Mechanical Engineering Chonnam National University Gwangju61186 Korea Republic of Department of Condensed Matter Physics and Material Sciences S.N. Bose National Centre for Basic Sciences Block JD Sector III Salt Lake Kolkata700106 India Advanced Medical Device Research Center for Cardiovascular Disease Chonnam National University 77 Yongbong-ro Buk-gu Gwangju61186 Korea Republic of Center for Next-Generation Sensor Research and Development Chonnam National University Gwangju61186 Korea Republic of

The rapid progress and assimilation of the Internet of Things in modern lifestyles has sparked increased interest in self-powered electronics and wearable sensors. In this study, we present a simple, facile, and cost-effective approach to fabricate polyaniline (PANI)-coated ferroelectric barium titanate nanoparticle (BT NP)-embedded poly(vinylidene fluoride-co-trifluoroethylene) (P(VDF-TrFE)) nanocomposite nanofiber (PANI@(P(VDF-TrFE)/BT) mats. The addition of PANI-coated BT NPs into the nanofibers greatly enhances the piezoelectric coefficient (d33 ≈ 62 pC N−1), leading to an improved output voltage. Meanwhile, the conductive PANI also improves the electrically conductive network, resulting in enhanced current output. The proposed flexible piezoelectric nanogenerator yielded an excellent figure of merit ([[EQUATION]]), significantly enhancing energy-harvesting performance (an open-circuit output voltage of ~68 V, a short-circuit current of ~3 µA, and a remarkable power density of 225 mW m−2). Furthermore, the fabricated flexible devices exhibited an average mechano-sensitivity of 1.2 V kPa−1, showcasing its potential for widespread application in self-powered wearable sensors capable of capturing various human motions in applications such as gesture monitoring and finger motion detection. © 2023, The Authors. All rights reserved.

关键词： Nanofibers

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Local structural study of α-MoO3 micro-strips using synchrotron X-ray diffraction and X-ray Absorption Spectroscopy at Mo K-edge

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EUROPEAN PHYSICAL JOURNAL-APPLIED PHYSICS 2022年 97卷 65-65页

作者： Gawai, Umesh Kamble, Shilpa Kamble, Charudipa Waghmare, Yogita Kulkari, Suvarna Singh, Manvendra Yadav, Ashok Jha, Shambhu Dole, Babasaheb Department of Physics DDSP Arts Commerce and Science College Erandol Jalgaon 425109 (M.S.) India Department of Physics Shri Madhavrao Patil Mahavidyalaya Murum Osmanabad 413606 India Department of Physics and RUSA Centre for Advanced Sensor Technology Dr. Babasaheb Ambedkar Marathwada University Aurangabad 431004 (M.S.) India Department of Electronics K.R.T. Arts B.H. Commerce and A.M. Science College Nashik 422002 India Synchrotrons Utilization Section Raja Ramanna Centre for Advanced Technology Indore 452013 India Atomic & Molecular Physics Division Bhabha Atomic Research Centre Mumbai 400094 India Beamline Development & Application Section Bhabha Atomic Research Centre Mumbai 400094 India Advanced Materials Research Laboratory Department of Physics Dr. Babasaheb Ambedkar Marathwada University Aurangabad 431004 India

The orthorhombic MoO3 micro-strips sample was synthesized using microwave assisted chemical co-precipitation technique. Synchrotron X-ray Diffraction (SXRD) pattern and Rietveld Refinement was used to estimate structural parameter, crystallite size of sample. It reveals that the synthesized sample MoO3 crystallized as an orthorhombic phase. X-ray Absorption Spectroscopy (XAS) measurement, which comprises both X-ray Absorption Near Edge Structure (XANES) and Extended X-ray Absorption Fine Structure (EXAFS) techniques, have been carried out on Mo K-edge to probe the local structure of samples. Local structure is also confirmed from the SXRD and Raman spectra of sample. XAS measurement reveals that the first bond length of Mo-O and Mo-Mo is 1.69 and 3.42 angstrom in orthorhombic MoO3 respectively. Transmission electron microscopy and SAED patterns showed stripe-like structure and single-crystal formation of MoO3 respectively.

关键词： Crystal structure

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Improved Performance of Multilayer Assembled Piezoelectric Nanogenerator with Electrospun Nanofiber Mats for Self-Powered Wearable sensors

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SSRN 2023年

作者： Mahanty, Biswajit Prasad, Gajula Shanmugasundaram, Arunkumar Ghosh, Sujoy Kumar Lee, Dong-Weon MEMS and Nanotechnology Laboratory School of Mechanical Engineering School of Mechanical Engineering Chonnam National University 77 Yongbong-ro Buk-gu Gwangju61186 Korea Republic of Advanced Medical Device Research Center for Cardiovascular Disease Chonnam National University 77 Yongbong-ro Buk-gu Gwangju61186 Korea Republic of Department of Condensed Matter Physics and Material Sciences S.N. Bose National Centre for Basic Sciences Block JD Sector III Salt Lake Kolkata7000106 India Center for Next-Generation Sensor Research and Development Chonnam National University 77 Yongbong-ro Buk-gu Gwangju61186 Korea Republic of

The limited throughput, sensitivity, and stability of piezoelectric nanogenerators (PENGs) have impeded their adoption in practical, long-term applications as self-powered wearable sensors. Although stacking piezoelectric layers is considered as an effective approach to improve their electrical performance, the overall enhancement does not consistently equate to the sum of individual single-layer PENG (S-PENG) performances, due to factors such as interfacial losses and coupling effects between layers. To overcome these limitations, we report on an enhanced performance multilayer piezoelectric nanogenerator (M-PENG) fabricated by alternatively stacking layers of barium titanate nanoparticles (BT NPs) and graphite nanosheets (GNS)-embedded poly(vinylidene fluoride-co-trifluoroethylene) (P(VDF-TrFE)) nanofibers (NFs) mats. The results demonstrate that the M-PENG's output open circuit voltage (Voc) gradually improved as the number of layers increased to six, ultimately achieving a Vocof 350 V, a short circuit current (Isc) of 6 µA, and a power density of 3.62 W m-2. The electrical performance of the 6L M-PENG surpassed the Voc values of single layer-PENGs and 6L M-PENG based on P10BT NFs and P0.10GNS NFs by factors of 12.5, 15.9, 1.75, and 1.42, respectively. Furthermore, the device exhibited an average mechano-sensitivity of 20±1.4 V kPa-1 under 10 kPa and 13.45±2.3 V kPa-1 under 10-100 kPa conditions. The improved performance of the M-PENG is attributed to the stretching and in situ poling during electrospinning, as well as the synergistic contribution of the BT NPs and GNS to the piezoelectric performance enhancement of the composite nanofibers. Due to its enhanced pressure sensitivity and superior output performance, the M-PENG holds potential for widespread application in self-powered wearable sensors designed to capture various human motions, including gesture monitoring, speech recognition, and emotion detection. Owing to the facile fabrication process, remarkabl

关键词： Multilayers

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Improved Performance of Multilayer Assembled Piezoelectric Nanogenerator with Electrospun Nanofiber Mats for Self-Powered Wearable sensors

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SSRN 2023年

作者： Mahanty, Biswajit Prasad, Gajula Shanmugasundaram, Dr. Arunkumar Ghosh, Sujoy Kumar Lee, Dong-Weon MEMS and Nanotechnology Laboratory School of Mechanical Engineering School of Mechanical Engineering Chonnam National University 77 Yongbong-ro Buk-gu Gwangju61186 Korea Republic of Advanced Medical Device Research Center for Cardiovascular Disease Chonnam National University 77 Yongbong-ro Buk-gu Gwangju61186 Korea Republic of Department of Condensed Matter Physics and Material Sciences S.N. Bose National Centre for Basic Sciences Block JD Sector III Kolkata Salt Lake7000106 India Center for Next-Generation Sensor Research and Development Chonnam National University 77 Yongbong-ro Buk-gu Gwangju61186 Korea Republic of

The limited throughput, sensitivity, and stability of piezoelectric nanogenerators (PENGs) have impeded their adoption in practical, long-term applications as self-powered wearable sensors. Although stacking piezoelectric layers is considered as an effective approach to improve their electrical performance, the overall enhancement does not consistently equate to the sum of individual single-layer PENG (S-PENG) performances, due to factors such as interfacial losses and coupling effects between layers. To overcome these limitations, we report on an enhanced performance multilayer piezoelectric nanogenerator (M-PENG) fabricated by alternatively stacking layers of barium titanate nanoparticles (BT NPs) and graphite nanosheets (GNS)-embedded poly(vinylidene fluoride-co-trifluoroethylene) (P(VDF-TrFE)) nanofibers (NFs) mats. The results demonstrate that the M-PENG's output open circuit voltage (Voc) gradually improved as the number of layers increased to six, ultimately achieving a Voc of 350 V, a short circuit current (Isc) of 6 µA, and a power density of 3.62 W m-2. The electrical performance of the 6L M-PENG surpassed the Voc values of single layer-PENGs and 6L M-PENG based on P10BT NFs and P0.10GNS NFs by factors of 12.5, 15.9, 1.75, and 1.42, respectively. Furthermore, the device exhibited an average mechano-sensitivity of 20±1.4 V kPa-1 under 10 kPa and 13.45±2.3 V kPa-1 under 10-100 kPa conditions. The improved performance of the M-PENG is attributed to the stretching and in situ poling during electrospinning, as well as the synergistic contribution of the BT NPs and GNS to the piezoelectric performance enhancement of the composite nanofibers. Due to its enhanced pressure sensitivity and superior output performance, the M-PENG holds potential for widespread application in self-powered wearable sensors designed to capture various human motions, including gesture monitoring, speech recognition, and emotion detection. Owing to the facile fabrication process, remarkab

关键词： Multilayers

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A Hybrid Biofuel and Triboelectric Nanogenerator for Bioenergy Harvesting

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Nano-Micro Letters 2020年第4期12卷 53-64页

作者： Hu Li Xiao Zhang Luming Zhao Dongjie Jiang Lingling Xu Zhuo Liu Yuxiang Wu Kuan Hu Ming‑Rong Zhang Jiangxue Wang Yubo Fan Zhou Li Beijing Advanced Innovation Centre for Biomedical Engineering Key Laboratory for Biomechanics and Mechanobiology of Chinese Education MinistrySchool of Biological Science and Medical EngineeringBeihang UniversityBeijing 100083People’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 Nanoscience and Technology University of Chinese Academy of SciencesBeijing 100049People’s Republic of China School of Physical Education Jianghan UniversityWuhan 430056People’s Republic of China Center on Nanoenergy Research School of Physical Science and TechnologyGuangxi UniversityNanning 530004People’s Republic of China Department of Radiopharmaceuticals Development National Institute of Radiological SciencesNational Institutes for Quantum and Radiological Science and TechnologyChiba 263‑8555Japan

Various types of energy exist everywhere around us,and these energies can be harvested from multiple sources to power micro-/nanoelectronic system and even personal electronic *** this work,we proposed a hybrid energy-harvesting system(HEHS)for potential in vivo *** HEHS consisted of a triboelectric nanogenerator and a glucose fuel cell for simultaneously harvesting biomechanical energy and biochemical energy in simulated body *** two energy-harvesting units can work individually as a single power source or work simultaneously as an integrated *** design strengthened the flexibility of harvesting multiple energies and enhanced corresponding electric *** with any individual device,the integrated HEHS outputs a superimposed current and has a faster charging *** the harvested energy,HEHS can power a calculator or a green light-emitting diode *** the widely existed biomechanical energy and glucose molecules in the body,the developed HEHS can be a promising candidate for building in vivo self-powered healthcare monitoring system.

关键词： Self-powered Triboelectric nanogenerator Glucose fuel cell Hybrid energy harvester Bioenergy

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Correction: Enhanced cardiomyocyte structural and functional anisotropy through synergetic combination of topographical, conductive, and mechanical stimulation

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Lab on a chip 2023年第1期24卷 149页

作者： Jongyun Kim Arunkumar Shanmugasundaram Cheong Bin Lee Jae Rim Kim Jeong Jae Park Eung-Sam Kim Bong-Kee Lee Dong-Weon Lee MEMS and Nanotechnology Laboratory School of Mechanical Engineering Chonnam National University Gwangju 61186 Republic of Korea. mems@jnu.ac.kr. Advanced Medical Device Research Center for Cardiovascular Disease Chonnam National University Gwangju 61186 Republic of Korea. Department of Biological Sciences Chonnam National University Gwangju 61186 Republic of Korea. Center for Next-Generation Sensor Research and Development Chonnam National University Gwangju 61186 Republic of Korea.

Correction for 'Enhanced cardiomyocyte structural and functional anisotropy through synergetic combination of topographical, conductive, and mechanical stimulation' by Jongyun Kim , , 2023, , 4540-4551, https:...

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Sustainable uric acid sensor based on a lab-fabricated electrode modified with rice straw-derived carbon materials

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Scientific reports 2025年第1期15卷 18380页

作者： Pakin Noppawan Jaroon Jakmunee Andrew J Hunt Nontipa Supanchaiyamat Suwiwat Sangon Jamras Lerdsri Thidarat Kruatian Jantima Upan Department of Chemistry Faculty of Science Mahasarakham University Maha Sarakham 44150 Thailand. Research Laboratory for Analytical Instrument and Electrochemistry Innovation Department of Chemistry Faculty of Science Chiang Mai University Chiang Mai 50200 Thailand. Research Laboratory on Advanced Materials for Sensor and Biosensor Innovation Materials Science Research Center Center of Excellence for Innovation in Chemistry Faculty of Science Chiang Mai University Chiang Mai 50200 Thailand. Materials Chemistry Research Center Department of Chemistry Center of Excellence for Innovation in Chemistry Faculty of Science Khon Kaen University Khon Kaen 40002 Thailand. Department of Livestock Development Veterinary Research and Development Center (Upper Northern Region) Lampang 52190 Thailand. Institute of Community Science Technology Department of Science Service Ministry of Higher Education Science Research and Innovation Bangkok 10400 Thailand. Department of Chemistry Faculty of Science Mahasarakham University Maha Sarakham 44150 Thailand. jantima.u@msu.ac.th.

A novel and facile electrochemical sensor for the quantification of uric acid has been fabricated through the strategic modification of a screen-printed carbon electrode (SPCE) using mesoporous carbon-zinc oxide (MC-ZnO) synthesized from rice straw waste. The MC-ZnO materials, generated via a controlled pyrolysis process, exhibit homogeneous dispersion and a substantial electroactive surface area of 0.1286 cm. The electrochemical oxidation of uric acid exhibits a distinct peak at 0.18 V in differential pulse voltammetry (DPV), indicative of efficient charge transfer kinetics. A linear range spanning 20 to 225 µM was obtained with a limit of detection (LOD) of 3.76 µM, signifying exceptional analytical sensitivity. Furthermore, the sensor demonstrates robust selectivity toward uric acid in the presence of typical interferents, underscoring its applicability for precise uric acid determination in complex biological matrices. The sensor's analytical performance was validated by quantifying uric acid in spiked urine samples, yielding recovery rates between 97.9% and 114.8% and relative standard deviations (RSD) below 4.92%, affirming its accuracy and precision. This platform heralds a promising avenue for clinical diagnostics, leveraging sustainable materials for uric acid detection.

关键词： Agricultural waste Biomass Eco-friendly sensor Modified electrode Voltammetry

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Correction: Quantitative assessment of cardiomyocyte mechanobiology through high-throughput cantilever-based functional well plate systems

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The Analyst 2023年第1期149卷 254页

作者： Jongyun Kim Arunkumar Shanmugasundaram Dong-Su Kim Yun-Jin Jeong Pooja P Kanade Eung-Sam Kim Bong-Kee Lee Dong-Weon Lee MEMS and Nanotechnology Laboratory School of Mechanical Engineering Chonnam National University Gwangju 61186 Republic of Korea. mems@jnu.ac.kr. Advanced Medical Device Research Center for Cardiovascular Disease Chonnam National University Gwangju 61186 Republic of Korea. Green Energy & Nano Technology R&D Group Korea Institute of Industrial Technology (KITECH) Gwangju 61012 Republic of Korea. Department of Biological Sciences Chonnam National University Gwangju 61186 Republic of Korea. Center for Next-Generation Sensor Research and Development Chonnam National University Gwangju 61186 Republic of Korea.

Correction for 'Quantitative assessment of cardiomyocyte mechanobiology through high-throughput cantilever-based functional well plate systems' by Jongyun Kim , , 2023, , 5133-5143, https://***/10.1039/D3AN012...

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An Improved Non-Geometrical Stochastic Model for Non-WSSUS Vehicle-to-Vehicle Channels

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ZTE Communications 2019年第4期17卷 62-71页

作者： HUANG Ziwei CHENG Xiang ZHANG Nan State Key Laboratory of Advanced Optical Communication Systems and Networks School of Electronics Engineering and Computer SciencePeking UniversityBeijing 100871China Key Laboratory of Wireless Sensor Network&Communication Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai 200050China Wireless Algorithm Department Product Research and Development SystemZTE CorporationShanghai 201203China

A novel non-geometrical stochastic model(NGSM)for non-wide sense station ary uncorrelated scattering(non-WSSUS)vehicle-to-vehicle(V2V)channels is *** model is based on a conventional NGSM and employs a more accurate method to reproduce the realistic characteristics of V2V channels,which successfully extends the existing NGSM to include the line-of-sight(LoS)***,the statistical properties of the proposed model in different scenarios,including Doppler power spectral density(PSD),power delay profile(PDP),and the tap correlation coefficient matrix are simulated and compared with those of the existing ***,the simulation results dem onstrate not only the utility of the proposed model,but also the correctness of our theoreti cal derivations.

关键词： vehicle-to-vehicle non-WSSUS channels non-geometrical stochastic model LoS component statistical properties

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