IEEE Journal on Flexible Electronics最新文献

{"title":"IEEE Journal on Flexible Electronics Publication Information","authors":"","doi":"10.1109/JFLEX.2026.3657928","DOIUrl":"https://doi.org/10.1109/JFLEX.2026.3657928","url":null,"abstract":"","PeriodicalId":100623,"journal":{"name":"IEEE Journal on Flexible Electronics","volume":"5 2","pages":"C2-C2"},"PeriodicalIF":0.0,"publicationDate":"2026-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11373675","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146122773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fully Inkjet Printed Carbon Nanotube Thin-Film Transistors for Large-Area Flexible Backplanes","authors":"Paramita Kar Choudhury;Manoranjan;Y. N. Mohapatra","doi":"10.1109/JFLEX.2026.3659090","DOIUrl":"https://doi.org/10.1109/JFLEX.2026.3659090","url":null,"abstract":"The demand for large-area, flexible electronic devices has driven significant innovation in thin-film transistor (TFT) technology. Here, we present a fully solution processed, scalable fabrication route to realize high-performance carbon nanotube (CNT) TFT arrays on flexible substrates using inkjet printing. Our fully inkjet printed (FIJP) technique allows for the simplified manufacturability of CNT-TFTs with outstanding performance metrics. We demonstrate a scalable process with four-layer transistor configuration, achieving remarkable mobility values up to 40 cm²/(V-s) and an <sc>on</small>/<sc>off</small> ratio of ~10⁵, one of the highest reported for fully printed CNT-TFTs to date. In situ curing methods, including photon sintering and plasma treatment, are integrated to enhance device robustness and overlay accuracy, crucial for roll-to-roll (R2R) manufacturing compatibility. These results demonstrate the viability of FIJP as a robust and industrially relevant platform for next-generation large-area flexible electronics, including displays, sensor arrays, and wearable systems.","PeriodicalId":100623,"journal":{"name":"IEEE Journal on Flexible Electronics","volume":"5 3","pages":"65-74"},"PeriodicalIF":0.0,"publicationDate":"2026-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147429284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Embroidery-Integrated Silver Thread Biofuel Cells for Implantable Glucose Energy Harvesting From a Living Rat","authors":"S. Vanmathi;Aparajita Ghosh;Onkar Prakash Kulkarni;Sameer Sonkusale;Sanket Goel","doi":"10.1109/JFLEX.2026.3656478","DOIUrl":"https://doi.org/10.1109/JFLEX.2026.3656478","url":null,"abstract":"Enzymatic biofuel cells (EBFCs), which harness endogenous biofuels such as glucose to generate electricity, offer an alternative for sustainable energy harvesting within the body. The growing demand for reliable self-powered systems has led to an increased interest in long-term implantable medical devices. Glucose biofuel cells (GBFCs) present a promising energy source using the natural glucose found in bodily fluids. However, developing small and flexible electrodes remains a significant challenge. A novel, flexible bioelectrode made from embroidered silver (Ag) thread (ST) that can be safely implanted in a living, freely moving rat. Ag thread embroidered over cotton cloth later this electrode uses specific enzymes as anode catalysts, laccase as cathode catalysts, a destructively stimulating supervising polymer, a redox-active compound suitable for biological systems, and gold nanostructures to enhance electron transfer. In vitro testing of this embroidery-inspired EBFC achieved a power density (PD) of 132.5 <inline-formula> <tex-math>$mu $ </tex-math></inline-formula>W/cm². In vivo, we have performed with a Wistar rat, and the performance improved to 292 <inline-formula> <tex-math>$mu $ </tex-math></inline-formula>W/cm², which can be useful for portable and wearable electronics applications. These results demonstrate that subdermal-implanted microsystems can be powered in a biocompatible and cost-effective manner.","PeriodicalId":100623,"journal":{"name":"IEEE Journal on Flexible Electronics","volume":"5 3","pages":"75-83"},"PeriodicalIF":0.0,"publicationDate":"2026-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147429311","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Editorial to the First Issue of the Fifth Year of IEEE Journal on Flexible Electronics","authors":"Paul R. Berger","doi":"10.1109/JFLEX.2025.3648215","DOIUrl":"https://doi.org/10.1109/JFLEX.2025.3648215","url":null,"abstract":"","PeriodicalId":100623,"journal":{"name":"IEEE Journal on Flexible Electronics","volume":"5 1","pages":"2-2"},"PeriodicalIF":0.0,"publicationDate":"2026-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11353355","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145963438","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"IEEE Journal on Flexible Electronics Publication Information","authors":"","doi":"10.1109/JFLEX.2025.3646832","DOIUrl":"https://doi.org/10.1109/JFLEX.2025.3646832","url":null,"abstract":"","PeriodicalId":100623,"journal":{"name":"IEEE Journal on Flexible Electronics","volume":"5 1","pages":"C2-C2"},"PeriodicalIF":0.0,"publicationDate":"2026-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11353353","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145963435","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Design, Fabrication, and Characterization of Graphitic Carbon Nitride Nanosheets as Supercapacitors Electrode","authors":"Sebina Yesmin;Rajdeep Dasgupta;Siddhartha S. Dhar;Tamal Banerjee","doi":"10.1109/JFLEX.2026.3651440","DOIUrl":"https://doi.org/10.1109/JFLEX.2026.3651440","url":null,"abstract":"This work reports the successful design, fabrication and, characterization of graphitic carbon nitride (g-C₃N<inline-formula> <tex-math>${}_{4}$ </tex-math></inline-formula>) nanosheets as electrode materials for supercapacitors (SCs). Herein, g-C₃N₄ was synthesized with the facile thermal polymerization method, and the electrochemical stability of the as-prepared g-C₃N₄ electrode was analyzed considering three different aqueous electrolytes 1-M Na₂SO₄ (neutral), 6-M KOH (alkaline), and 1-M H₂SO₄ (acidic). The best specific capacitance of g-C₃N₄ was obtained in an acidic medium (188.65 F/g) compared with alkaline (145.75 F/g) and neutral electrolyte (110.92 F/g) at a current density of 1 A/g. After 2000 charge窶電ischarge cycles, capacity retentions of 70.53%, 73.98%, and 74.44% were achieved with neutral, alkaline, and acidic mediums, respectively. However, the energy density of 26.3, 20.25, and 15.5 Wh/kg was observed, whereas the maximum power density was obtained as 2.491, 2.486, and 2.482 kW/kg using acidic, alkaline, and neutral electrolytes, respectively. Therefore, this study evaluates the potential of g-C₃N₄ as the efficient base material for the fabrication of a variety of SCs composed of materials having different electrochemical stabilities for variety of application including portable and flexible energy storage devices.","PeriodicalId":100623,"journal":{"name":"IEEE Journal on Flexible Electronics","volume":"5 3","pages":"84-91"},"PeriodicalIF":0.0,"publicationDate":"2026-01-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147429279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Fully Printed Heterojunction Based on PEDOT:PSS and ZnO With Memristive Behavior","authors":"Apostolos Apostolakis;Dimitris Barmpakos;Grigoris Kaltsas","doi":"10.1109/JFLEX.2025.3648966","DOIUrl":"https://doi.org/10.1109/JFLEX.2025.3648966","url":null,"abstract":"This work reports the fabrication and electrical characterization of fully inkjet-printed Ag/PEDOT:PSS/zinc oxide (ZnO) heterojunction devices on flexible polyimide (Kapton) substrates. All functional layers, including the bottom Ag electrode, p-type PEDOT:PSS, and n-type ZnO, are deposited exclusively by inkjet printing, enabling a scalable and low-temperature additive process compatible with large-area flexible electronics. While PEDOT:PSS/ZnO heterostructures have been widely studied for optoelectronic and diode applications, they are typically realized using partially printed or vacuum-processed layers and are not optimized for memristive operation. Here, we demonstrate that fully printed PEDOT:PSS/ZnO heterojunctions exhibit pronounced rectifying current–voltage (<inline-formula> <tex-math>$I$ </tex-math></inline-formula>–<inline-formula> <tex-math>$V$ </tex-math></inline-formula>) characteristics, a clear threshold for switching, and a stable hysteretic response indicative of memristive behavior. The device response stabilizes after an initial forming cycle and maintains reproducible high and low resistance state (LRS) over repeated voltage sweeps. Furthermore, under voltage pulse sequences, the heterojunction shows short-term potentiation and depression, with the conductance depending on the history of applied pulses, mimicking synaptic plasticity. These results highlight fully inkjet-printed PEDOT:PSS/ZnO heterojunctions on flexible substrates as promising candidates for low-cost, large-area artificial synapses and printed neuromorphic circuits.","PeriodicalId":100623,"journal":{"name":"IEEE Journal on Flexible Electronics","volume":"5 2","pages":"56-63"},"PeriodicalIF":0.0,"publicationDate":"2025-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146122775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fractal-Based Flexible Capacitive Antenna Sensor for Non-Invasive Spinal Kyphosis/Lordosis Assessment","authors":"G. Samuelraj Chrysolite;S. Dhanu Shree;J. Sheril Sharo Christa;G. Venika;Angeline Mathew;Manickam","doi":"10.1109/JFLEX.2025.3644809","DOIUrl":"https://doi.org/10.1109/JFLEX.2025.3644809","url":null,"abstract":"The high prevalence of problems related to lordosis/kyphosis among weightlifters, athletes, wrestlers, and IT professionals highlights the need for effective posture monitoring solutions. Common sensors used for posture monitoring include accelerometers, gyroscopes, magnetometers, inertial sensors, tilt sensors, flexible pressure sensors, and flexible strain sensors. Due to constraints such as sensitivity to environmental factors, power consumption, patient comfort, and bulkiness, a flexible adhesive capacitance-based superstrate infused complementary split ring resonator (CSRR)-based antenna sensor, which uses both the antenna’s electromagnetic field and sensor’s transducing property, is proposed. The proposed printed antenna sensor is polyimide based with compact dimensions of <inline-formula> <tex-math>$35times 36times 0.13$ </tex-math></inline-formula> mm³. Fractal structures are incorporated for better coverage of the posture changes in the spine region with multidirectional antenna pattern avoiding the usage of antenna array structures. Capacitive sensing is preferred to monitor physical structure changes as it is insensitive to environmental factors. When the person’s posture at kyphosis/lordosis changes beyond normal angular limits (Kyphosis-20° to 45°-Outward/Lordosis-20° to 40°-Inward), the resonant frequency of the antenna sensor changes and thereby translated as abnormal curvatures of the spine region (thoracic/lumbar). In heterogeneous medium, particle swarm optimization (PSO) is applied to the initial antenna sensor design in simulation using fractal structures, yielding performance characteristics, which has a good reflection coefficient of −14.48 dB with good impedance matching of <inline-formula> <tex-math>$53~Omega $ </tex-math></inline-formula> and a directional gain of 1.3 dBi at the resonant frequency of 6.66 GHz for lordosis (inward curvature of above 45° between L3 and L4) and reflection coefficient of −17.16 dB with good impedance matching of <inline-formula> <tex-math>$47~Omega $ </tex-math></inline-formula> and a directional gain of 0.33 dBi at the resonant frequency of 6.74 GHz for kyphosis (outward curvature of above 40° between T7 and T8). The proposed antenna sensor is also validated in real-time environment using a vector network analyzer (VNA) for performance characteristics measurement on few human subjects. This proposed wearable antenna sensor offers a non-invasive and efficient approach to real-time posture monitoring, contributing to spinal health improvement for individuals prone to problems related to lordosis/kyphosis, thereby enhancing the ergonomic aspects in healthcare.","PeriodicalId":100623,"journal":{"name":"IEEE Journal on Flexible Electronics","volume":"5 2","pages":"46-55"},"PeriodicalIF":0.0,"publicationDate":"2025-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146122779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"IEEE Journal on Flexible Electronics Publication Information","authors":"","doi":"10.1109/JFLEX.2025.3637427","DOIUrl":"https://doi.org/10.1109/JFLEX.2025.3637427","url":null,"abstract":"","PeriodicalId":100623,"journal":{"name":"IEEE Journal on Flexible Electronics","volume":"4 12","pages":"C2-C2"},"PeriodicalIF":0.0,"publicationDate":"2025-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11281516","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145674834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Flexible Decoder With Charge-Sharing Feature for TFT Display Backplanes","authors":"Sparsh Kapar;Shubham Ranjan;Czang-Ho Lee;William S. Wong;Manoj Sachdev","doi":"10.1109/JFLEX.2025.3638974","DOIUrl":"https://doi.org/10.1109/JFLEX.2025.3638974","url":null,"abstract":"Thin-film transistors (TFTs) have garnered recent research interest in the development of flexible displays, due to their low fabrication costs and high-volume production. In displays, driver circuits are typically implemented with off-panel CMOS logic, while the display pixels themselves use TFTs. This approach restricts the resolution enhancement of displays and causes significant power dissipation. Additionally, implementing CMOS-like logic with unipolar TFTs requires careful attention to power and voltage swing. The latest bootstrapped inverter technology has addressed some of these issues, demonstrating the use of unipolar TFTs in row-driver display circuits. In this article, we propose a row address decoder circuit for TFT-based displays that reduces dynamic power consumption through charge sharing on glass and flexible substrates. The impact of bending and substrate material was also investigated. Measurement results show that the proposed design-based 3-to-8 decoder under various conditions saves on average 26.0% of the power compared to a state-of-the-art TFT-based decoder.","PeriodicalId":100623,"journal":{"name":"IEEE Journal on Flexible Electronics","volume":"5 2","pages":"37-45"},"PeriodicalIF":0.0,"publicationDate":"2025-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146122778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}