Global ETD Search
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Showing 1 to 20 of 26 for “"Triboelectric"”.
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Design and Fabrication of Polyvinylidene Fluoride for Triboelectric Nanogenerators
Recently triboelectric nanogenerators (TENGs) have attracted huge interest because of their flexibility to harvest wasted mechanical energy. However, triboelectrification is a well-known phenomenon for centuries, the underlying physics behind it is still under debate, so a comprehensive study on …
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An Investigation of Contact Electrification and Triboelectric Charging in Insulating Materials
Triboelectric charging, the electrostatic charging of materials when they are rubbed, is frequently observed in insulating materials, but poorly understood on the fundamental level. Insulating materials by definition do not have free charge carriers and it is not obvious how charge can be …
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Modeling and Experimental Measurement of Triboelectric Charging in Dielectric Granular Mixtures
Triboelectric charging, the phenomenon by which electrical charge is exchanged during contact between two surfaces, has been known to cause significant charge separation in granular mixtures, even between chemically identical grains. This charging is a stochastic process resulting from random …
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Electrospun polymer fibers for triboelectric energy harvesting applications in smart textiles
… of charging. Amongst energy harvesters, triboelectric generators are excellent candidates for smart textile applications due to their potential to convert mechanical energy arising from body movements into electrical energy. Typically, triboelectric energy harvesters rely on …
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Wearable Power Sources and Self-powered Sensors Based on the Triboelectric Nanogenerators
The triboelectric nanogenerator (TENG) has attracted global attention in the fields of power sources and self-powered sensors. By coupling the omnipresent triboelectrification effect and the electrical induction effect, the TENGs can transduce ambient mechanical energy into electrical energy. Such …
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Particle-Based Triboelectric Vibration Sensor for Speech Recognition and Remote Machine Condition Monitoring
… vibration sensors, particularly those utilising triboelectric nanogenerators, hold great promise for real-time monitoring of dynamic loads and structural health without external power sources. Based on the triboelectric effect and electrostatic induction, a triboelectric vibration sensor can …
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The effect of nanostructuring and crystallinity on triboelectric energy harvesting devices for biomedical applications
Triboelectric energy harvesting devices are an excellent choice for removing the reliance on batteries in the medical space. This is due to the wide range in possible material choice, conformability, and excellent ability to harvest energy at the low frequencies (0–10 Hz) present from human motion. …
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Turning food waste into value: Developing triboelectric devices for various applications from pomelo-peel biomass
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2026-08-01
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Self-Powered Wearable Sweat Monitoring using 2D WS2 Textile Integrated Triboelectric Nanogenerators for Future Personalized Healthcare
… WS2) integrated into textile-based self-powered triboelectric nanogenerators (TENGs) devices. The research introduces a novel fabrication approach for creating self powered biosensors by integrating 2D WS2 into textile substrates. 2D WS2 was produced via liquid-phase exfoliation and deposited …
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Use of a triboelectric generator for a tunable wideband energy harvester and a threshold shock sensor
<p>The prevalence of triboelectricity as a transduction mechanism has increased rapidly in recent years. We will discuss two uses for triboelectric generators. One design is a tunable wideband energy harvester. An axial force and amplitude limiter work together to create an energy harvester that …
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A Smart Energy-Efficient Hybrid Gait Monitoring System
<p>Triboelectric nanogenerators are devices that harvest mechanical energy from the environment and turn it into electricity. By coupling the effect of contact electrification and electrostatic induction between two materials that come into contact and then separate they can convert the irregular, …
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Graphene-based wearable textile-triboelectric nanogenerators and biokinetic sensors [Nanogeneratori triboelettrici tessili indossabili a base di grafene e sensori biocinetici]
Questa tesi si concentra sullo sviluppo di nanogeneratori triboelettrici tessili a base di grafene (T-TENG) per la raccolta di energia indossabile e il rilevamento del movimento. È stato sviluppato un nuovo approccio per la sintesi di inchiostro di grafene tramite esfoliazione in fase liquida …
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Novel Functional Polymeric Nanomaterials for Energy Harvesting Applications
Polymer-based piezoelectric and triboelectric generators form the basis of well-known energy harvesting methods that are capable of transforming ambient vibrational energy into electrical energy via electrical polarization changes in a material and contact electrification, respectively. However, …
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Insulator-insulator Contact Charging As A Function Of Pressure
… and to an extent metal - insulator contact or triboelectric charging are well known phenomena with good theoretical understanding of the charge exchange mechanism. However, insulator – insulator charging is not as well understood. Theoretical and experimental research has been performed that …
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DEVELOPMENT OF MICRONEEDLES ON FLEXIBLE SKIN PATCH WITH FUNCTIONAL COMPONENTS FOR TRANSDERMAL DRUG DELIVERY APPLICATIONS
… delivery, a delivery volume sensor based on triboelectric mechanism is designed and optimized. For powering other functional components to be integrated in the future, a low cost power source, which leverages the stacked layer triboelectric energy harvester design, is characterized to achieve …
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Explosive Safety with Regards to Electrostatic Discharge
… dielectric materials which are susceptible to triboelectric charge transfer, or build-up of static charge, and thus, become a potential hazardous electrical source that may cause the explosive to inadvertently initiate. To eliminate the generation of static electricity, it is important to …
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Advanced Manufacturing of Functional Lightweight Conductive Composite Systems for Sustainable and Flexible Electronics
… storage devises, capacitors, supercapacitors and triboelectric nanogenerators (TENGs) and fuel cells. This research emphasizes the need to explore the influence of intense flow fields encountered during CPC fabrication, particularly in advanced manufacturing processes, on the materials' electrical …
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Interactions Between Supersonic Gas Jets and Gas-Solid Fluidized Beds
… supersonic nozzles was studied using a set of triboelectric probes, and two correlations were presented: one that relates thrust with jet penetration, and another one that is a modification of a correlation that was proposed by Benjelloun et al. for the penetration of subsonic jets. These …
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