Frequency Multipliers Based on a Dual-Gate Graphene FET with M-Shaped Resistance Characteristics on a Flexible Substrate

Electronics, Journal Year: 2025, Volume and Issue: 14(4), P. 803 - 803

Published: Feb. 19, 2025

Frequency multipliers are essential components in communication systems, and graphene’s exceptional electrical properties make it highly promising for flexible electronics. This paper addresses the technical challenges of multi-frequency based on graphene field-effect transistors (GFETs) introduces a novel fabrication method using as channel material metals with different work functions top gate. By employing Ti Pd distinct functions, we develop dual-gate GFET device that exhibits stable M-shaped resistance characteristics polyethylene naphthalate (PEN) substrate. We demonstrate frequency doubler, tripler, quadrupler The results show GFET-based multiplier offers advantages such low operating voltage (<1 V), high conversion efficiency (up to 8.4% tripler 6% quadrupler), spectral purity 88% 76% quadrupler). intrinsic maximum reaches 54 GHz. use monolayer channel, dual-metal gate control enabling an transfer curve, all contribute its superior performance compared conventional devices.

Language: Английский

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Sustainability Meets Functionality: Green Design Approaches to Cellulose-Based Materials

ACS Materials Letters, Journal Year: 2025, Volume and Issue: unknown, P. 1563 - 1592

Published: March 26, 2025

Language: Английский

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Dissolvable Probiotic‐Powered Biobatteries: A Safe and Biocompatible Energy Solution for Transient Applications

Small, Journal Year: 2025, Volume and Issue: unknown

Published: March 26, 2025

For decades, science fiction has imagined electronic devices that spring to life on demand, function as programmed, and then vanish without a trace. Today, transient bioresorbable electronics are making vision reality, sparking revolutionary progress in biomedicine, environmental stewardship, hardware security. Yet one critical barrier remains: fully power source with the same disappearing act. Microbial-based biobatteries have emerged strong contenders, harnessing of microorganisms-found virtually everywhere-as natural biocatalysts. However, toxicity health risks limited these systems single-use, often incinerable applications. Here, transformative approach: biobattery powered by commercially available probiotics dissolves harmlessly is introduced, releasing only beneficial microbes. Fabricated water-soluble or pH-responsive substrates, this capitalizes 15-strain probiotic blend generate electricity across diverse electrode materials. By manipulating device length encapsulating it pH-sensitive polymers, delivery can be fine-tuned from 4 min up over 100 min. A single module outputs µW power, 47 µA current, an open-circuit voltage 0.65 V. This groundbreaking design ushers new era safe, effective bioenergy systems, opening unprecedented opportunities biomedical implants, sensors, disposable electronics.

Language: Английский

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Dry Printing Fully Functional Eco-Friendly and Disposable Transient Papertronics

Flexible and Printed Electronics, Journal Year: 2024, Volume and Issue: 9(3), P. 035008 - 035008

Published: Aug. 29, 2024

Abstract The demand for flexible printed electronics is growing fast, especially with the move toward Internet of Things. These electrons are usually designed short-term use, after which they disposed of. polymeric substrates used in comprise biggest portion their non-biodegradable E-waste disposal. This paper demonstrates feasibility printing fully functional transient on flexible, water-soluble, and biodegradable using dry approach. in-situ generation real-time sintering silver nanoparticles at room temperature enables fabrication complex circuits such water-soluble papers. A layout similar to an Arduino pro mini board both sides a substrate electrical interconnects. Various components then directly mounted fabricate complete, working circuit. Cyclic bending tests demonstrate mechanical durability reliability under repeated stress. process uniquely achieves robust without thermal damage, water solubility successfully show rapid dissolution devices water. Furthermore, detached during collected reused, demonstrating recyclability process. Overall, this transformative manufacturing method establishes key technical capabilities produce next-generation sustainable, green sensors renewable materials.

Language: Английский

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Paper‐Based Electronics: Toward Sustainable Electronics

Advanced Sustainable Systems, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 25, 2024

Abstract The emergence of paper‐based electronic devices marks a significant leap forward in the design flexible, lightweight, and eco‐friendly electronics. Paper‐based sensors represent transformative approach to creating environmentally friendly This review will discuss recent applications electronics, mainly exploring emergent technologies employed developing innovative for chemical analysis. Furthermore, role electronics electrochemical, physical sensing, specifically addressing relative humidity, temperature, pressure, strain be commented. In addition, integration paper energy harvesting storage is discussed, covering solar cells, tribogenerators, antennas, supercapacitors. These advancements underscore versatility potential diverse applications, from wearable health monitors sustainable solutions, paving way future recyclable biodegradable devices.

Language: Английский

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All-organic transistors printed on a biodegradable and bioderived substrate for sustainable bioelectronics

Materials Today Bio, Journal Year: 2024, Volume and Issue: 29, P. 101274 - 101274

Published: Sept. 26, 2024

Biodegradable electronics is an incipient need in order to mitigate the alarming increase of electronic waste worldwide caused by capillary penetration devices and sensors. Flexibility, solution processability, low capital expenditure, energy-efficient processes, which are distinctive features organic printed electronics, have be complemented a sustainable sourcing end-of-life materials employed. This requirement calls for solutions where materials, especially substrates that typically represent largest volume, can biodegraded environment with no harm, yet assuring precious resources dispersed. In this work, bioderived biodegradable biopolymer polyhydroxybutyrate (PHB) was used as substrate, cast from acetic acid solution, all-organic field effect transistors (OFETs) based on inkjet polymer semiconductor. The OFETs showed small device-to-device variation, proper current modulation I ON /I OFF about 1.2·103, mobility values high 0.07 cm2/Vs saturation regime channel length/width normalized leakage currents nA, remained almost unaltered also after intensive mechanical stresses upon bending rolling. Such stability flexibility, together biodegradability bioderivation, make PHB appealing candidate development bioelectronics, widespread future applications biomedical food packaging sector.

Language: Английский

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How Far Is the Nanocellulose Chip and Its Production in Reach? A Literature Survey

Nanomaterials, Journal Year: 2024, Volume and Issue: 14(18), P. 1536 - 1536

Published: Sept. 22, 2024

The slowdown of Moore’s Law necessitates an exploration novel computing methodologies, new materials, and advantages in chip design. Thus, carbon-based materials have promise for more energy-efficient systems the future. Moreover, sustainability emerges as a concern semiconductor industry. production recycling processes associated with current chips present huge environmental challenges. Electronic waste is major problem, sustainable solutions must be found. In this review, we examine alternative design based on nanocellulose, which also features properties transistors. Our review highlights that nanocellulose (NC) versatile material high-potential composite, it can fabricated to gain suitable electronic semiconducting properties. NC provides ideal support ink-printed transistors electronics, including green paper electronics. Here, summarise various processing procedures describe structure exclusively nanocellulose-based Furthermore, survey recent scientific efforts organic show how fully automated such full could achieved, Process Design Kit (PDK), expected variation models, standard cell library at logic-gate level, where multiple are connected perform basic logic operations—for instance, NOT-AND (NAND) gate. Taking all these attractive into account, envision using Automation (EDA) tool chains.

Language: Английский

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A Paper‐Based Wearable Moist–Electric Generator for Sustained High‐Efficiency Power Output and Enhanced Moisture Capture

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 23, 2024

Disposable wearable electronics are valuable for diagnostic and healthcare purposes, reducing maintenance needs enabling broad accessibility. However, integrating a reliable power supply is crucial their advancement, but conventional sources present significant challenges. To address that issue, novel paper-based moist-electric generator developed harnesses ambient moisture generation. The device features gradients functional groups adsorption architecture of nanostructures within disposable paper substrate. nanoporous, gradient-formed spore-based biofilm asymmetric electrode deposition enable sustained high-efficiency output. A Janus hydrophobic-hydrophilic layer enhances harvesting, ensuring effective operation even in low-humidity environments. This research reveals the water gradient performance under high humidity, whereas group dominant low humidity. delivers consistent across diverse conditions flexibly conforms to various surfaces, making it ideal applications. Its eco-friendly, cost-effective, nature makes viable solution widespread use with minimal environmental effects. innovative approach overcomes limitations traditional electronics, offering sustainable future wearables. It significantly personalized medicine through improved health monitoring diagnostics.

Language: Английский

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