Articles tagged with Mechanical Energy
An exoskeleton device removes kinetic energy during the knee swing phase of walking, reducing metabolic cost by 3.3% and generating up to .25 watts per gait cycle. This approach converts wasted energy into useable electricity, providing a net metabolic benefit.
A team of researchers has created a thermal power nanogenerator that converts abundant thermal energy into electrical energy without any solid moving parts. This innovation, known as the TA-LM-TENG, has the potential to be used in various applications such as waste heat recovery and space power systems.
Researchers at CUHK have developed a water-tube-based triboelectric nanogenerator (WT-TENG) for harnessing irregular and low-frequency environmental energy, such as ocean waves. The device generates high output volumetric charge density, reaching 9 mC/m3, and can be easily combined to create larger units for increased power generation.
Researchers investigate coupling between mechanical stresses and grain boundaries in nanograined materials. Novel thermodynamic criterion quantifies stress impact on thermal stability; stresses play a vital role, unlike previous studies which ignored internal stresses.
Researchers have developed a prototype backpack that reduces load weights by 20% while harvesting energy from human movements to power small electronics. The backpack incorporates elastomers for shock absorption and a triboelectric nanogenerators to convert mechanical energy into electricity, achieving 14% efficiency.
High-speed X-ray imaging reveals click beetles can perform extreme movements by releasing stored energy quickly, supporting the idea of a distributed spring mechanism. Understanding this dynamics could inform development of insect-inspired robots.
Physicists Luca Comisso and Felipe Asenjo propose a new method to extract energy from rotating black holes by breaking and reconnecting magnetic field lines. This process could accelerate plasma particles to negative energies, allowing for massive amounts of energy extraction with an efficiency of up to 150%.
Researchers at EPFL have developed a miniaturized endovascular device that can explore capillaries without causing tissue damage. The technology harnesses hydrokinetic energy and uses magnetic steering to navigate the vascular system.
Researchers create biosensors using piezoelectric materials to detect specific viruses, including HPV and influenza A. Magnetostrictive materials are also being investigated for sensing bacterial infections.
Researchers at Rensselaer Polytechnic Institute developed a predictive model for an energy harvesting device that can convert mechanical vibrations into electrical energy. The model helps optimize the device to generate more power, paving the way for its potential use in wireless sensors and actuators.
Scientists at CUNY ASRC develop morphing crystals that convert water evaporation into powerful motions, offering a clean source of energy for mechanical devices. The materials are biocompatible, biodegradable, and cost-effective, with potential applications in robotics and micro-machines.
Researchers at the University of Texas at Austin have created a 'room-temperature all-liquid-metal battery' that combines the benefits of existing options. The battery can provide more energy, increased stability and flexibility without the limitations of solid-state batteries.
A topological pump has been developed to transport mechanical energy even through defective wave-guides and disorder. This innovation could lead to more robust devices that continue to operate despite damage.
Researchers fabricate crystal that flips back and forth in response to lighting conditions, enabling complex task prosecution. The discovery sheds light on the arrangement of azobenzene molecules within the crystal, which plays a crucial role in initiating the periodic behavior.
QUT researchers have designed a new carbon nanostructure made from diamond nanothreads that can store mechanical energy when twisted or stretched. The structure has an energy density 4-5 orders higher than conventional steel springs and up to 3 times compared to Li-ion batteries.
Researchers at the University of Bristol have identified a new propulsion mechanism for cells moving through complex environments. They found that self-propulsion without exerting force on the environment is possible in active matter.
The study reveals how bacteria's V1 motor converts chemical energy into mechanical rotation, similar to a well pump. Understanding this mechanism may lead to the development of highly efficient, man-made motors for implantable batteries or artificial electric eels.
A Purdue University team is developing sensors to track concrete strength development in real time, allowing for more precise data on when traffic can use new concrete pavement. This technology has the potential to save millions of dollars each year and reduce traffic by providing engineers with accurate information on concrete maturity.
Western gorillas in Gabon have been observed cracking open nuts with their teeth, despite their lack of adaptations for hard object consumption. The study reveals that gorillas may be capable of more dietary breadth than previously thought, with implications for understanding human ancestors' diets based on tooth shape.
Researchers at the University of Münster have identified a new reaction mechanism for converting biomass into fuels and chemicals using mechanical force. The mechano-catalytic reaction reduces energy requirements and eliminates unnecessary steps, leading to a more efficient and environmentally friendly process.
Researchers at Purdue University created a liquid-metal-inclusion based triboelectric nanogenerator, called LMI-TENG, which can harvest biomechanical signals from the body to power electronic devices. The technology has applications in wearable sensors, pervasive computing, and emerging technologies such as robotics and virtual reality.
Biologists have visualized the inner workings of cellular 'undertaker' proteasomes using cryo-electron microscopy. The study reveals how ATP powers movements within the motor that enable it to pull in proteins, providing insights into neurogenerative diseases like Parkinson's and Alzheimer's, as well as cancer therapy.
Scientists have developed battery-free 'smart' toys using triboelectric nanogenerators that gather energy from mechanical vibrations. The devices, powered by squeezing or shaking traditional toys, can illuminate LED lights and may pave the way for self-powered medical sensors and wearable electronics.
Scientists developed artificial wings that mimic earwig folding patterns, featuring resilin biopolymer for rapid springing motion. The innovation allows for faster folding and deployment than conventional mechanisms.
Researchers from Ural Federal University and Karaganda State Technical University developed a mathematical model to optimize the operation of an autonomous heat supply unit. The study found that adjusting parameters such as blade size in the Cavitator increased cavitation intensity and temperature, improving efficiency.
Researchers at the University of Alberta have developed a new way to produce high-density DC current, vastly improving over existing triboelectric nanogenerators. The discovery enables continuous flow of electricity from nanoscale movement and vibration, opening up potential applications in sensors, wearable devices, and more.
A ceramic-based mechanical pump has been developed that can operate at record temperatures of over 1,400 degrees Celsius, allowing for efficient thermal storage and renewable energy conversion. The pump could facilitate high-efficiency, low-cost storage of renewable energy generated by wind and solar power.
Researchers have developed a twistron harvester that harnesses energy from ocean waves, achieving a voltage of 46 mV and average output power of 1.79 mW. The device also acts as a motion sensor, demonstrating its potential for self-powered devices and natural energy harvesting.
Scientists at Osaka University and Italian researchers have created freestanding nanowires that can convert small levels of electrical power into mechanical oscillations at high frequencies. The design achieves unprecedented low power consumption, making it a significant step towards energy-efficient technologies.
A Vanderbilt University team developed an ultrathin energy harvesting system that generates electricity from human motion, offering a potential solution for wearable devices and smart clothing. The device operates at low frequencies, making it suitable for slow movements like sitting or standing.
Scientists at the University of Basel have developed a procedure that allows binding single gold atoms to polymer chains on silicone membranes. This enables the formation of ultra-thin conductive layers on silicone rubber, opening up new possibilities for medical implants.
Researchers at Michigan State University have developed a flexible, ultrathin device that can convert mechanical energy to electrical energy and vice versa, enabling applications such as foldable loudspeakers, voice-activated security patches, and talking newspapers.
Triboelectric nanogenerators (TENGs) convert movement into electricity, and daily body motion can power wearable devices. Researchers found that arm motion can cover the energy consumption of a smartwatch and even smartphones.
A team of researchers from UNIST and Korea University has developed a self-sustaining sensor platform to monitor water motion dynamics, frequency, and amplitude. The platform harnesses energy from water motion to perform multiple functions simultaneously, enabling continuous monitoring without external power source.
Researchers have discovered a new explanation for climate change using long-term variations of the Lorenz energy cycle, a complex formula describing atmospheric interaction. The study found that Earth's global atmosphere is increasing in efficiency as a heat engine, leading to more potential energy converted to kinetic energy and great...
A new concept harnesses low-frequency mechanical energy to generate electricity, improving performance at lower frequencies than existing devices. The device, called an ionic diode, operates at one-tenth Hertz and has a higher peak power density compared to piezoelectric generators.
Researchers from the University of Alberta have calculated significant energy savings of up to 31% and cost savings of up to 11% for light rail transit systems using flywheel technology. This innovative approach stores energy generated during braking, reducing power consumption and costs.
Scientists create a film that curls up and straightens autonomously when exposed to tiny changes in humidity, using it to transform environmental fluctuations into mechanical energy. The film can jump high and repeatedly bend and straighten without deterioration.
Researchers discovered graphene's exceptional lubricity, enabling frictionless movement between mechanical parts. The study suggests graphene could revolutionize coatings and electromechanical devices by reducing energy consumption and increasing service life.
Researchers have discovered graphene's exceptional lubricity, which could drastically reduce energy loss in machines when used as a coating. The material's ability to slide smoothly across gold surfaces has significant implications for improving energy efficiency and extending equipment lifespan.
Researchers at University of Wisconsin-Madison developed an energy-harvesting technology that captures human motion to power mobile devices. The 'bubbler' method generates high power densities, enabling smaller and lighter energy-harvesting devices that can be integrated into shoes.
Researchers at INSA de Lyon discovered a way to improve electrostrictive polymer energy harvesting by introducing plasticizers, increasing efficiency and sensitivity. This breakthrough enables the development of piezoelectric active sensors for force measurement.
Researchers at RIKEN Center for Emergent Matter Science have found a way to create and delete skyrmions using mechanical energy, which could lead to inexpensive and low-energy-consuming memory devices. The discovery uses a specially designed stress probe to apply mechanical stress to the surface of manganese-silicide material.
Researchers have discovered an iron-gallium alloy called Galfenol that can generate significant amounts of power when subjected to strong impacts. The material converts mechanical energy into magnetic energy with high efficiency and can be used to create wireless impact detectors.
Research groups worldwide are developing TENGs to power wearable electronics and sensor networks. A set of standards has been proposed to quantify device performance, including structural and materials performance of four major types. The standards will facilitate comparisons and selection of devices for specific applications.
Researchers at KAIST have developed zinc oxide-based micro energy harvesting devices that can harness mechanical energy to generate electricity. The devices, known as nanogenerators, were found to be more efficient when insulating layers such as aluminum nitride were inserted into the zinc oxide material.
Scientists have created the world's thinnest electric generator by harnessing the piezoelectric properties of a single atomic layer of MoS2. The device is optically transparent, extremely light, and bendable, making it ideal for wearable applications.
A novel molecular system resembling a butterfly has been discovered, capable of measuring temperature, emitting white light, and converting photon energy to mechanical motions. The molecule's unique properties make it suitable for developing non-invasive thermometers and molecular machines that can harness sunlight.
Researchers at NUS have successfully demonstrated a 'photosalient effect' driven by photochemical reactions in solids, converting light into mechanical motion. This phenomenon has potential applications in harnessing solar energy to power light-driven actuators and mechanical devices.
Scientists have developed a way to convert mechanical energy into electricity, enabling the creation of portable and sustainable power sources. The technology, known as triboelectric nanogenerators, can harness energy from everyday movements such as walking or rubbing, making it possible to charge mobile devices on the go.
A team of chemists used the Jülich supercomputer to simulate chemical reactions and found that beyond a certain force, additional mechanical energy does not significantly accelerate reaction rates. Instead, forces above this threshold can create unfavorable spatial structures that block access to reactant molecules.
Researchers at MIT have created a new material that can generate electricity by drawing on water vapor, which could power micro- and nanoelectronic devices. The material changes shape after absorbing evaporated water, allowing it to repeatedly curl up and down.
Researchers tracked albatross movements using GPS to discover the 'dynamic soaring' technique, which allows birds to fly with minimal mechanical cost. This method may lead to advancements in robotic aircraft design, enabling them to harness wind energy without engines.
Researchers developed a self-charging power cell that converts mechanical energy into chemical energy, eliminating the need for separate generators and batteries. The device can harness mechanical energy from walking or other sources, generating enough current to power small electronic devices.
Scientists have developed a way to generate power using harmless viruses that convert mechanical energy into electricity. The generator produces enough current to operate a small liquid-crystal display, and the milestone could lead to tiny devices harnessing energy from everyday tasks.
Researchers at the National Physical Laboratory have developed a new model for piezoelectric energy harvesters that can convert up to 25% more energy from unwanted mechanical vibrations. The new design covers only two-thirds of the cantilever's length, reducing internal power loss and increasing overall efficiency.
Researchers at Northwestern University have discovered that individual gallium nitride nanowires exhibit strong piezoelectricity in three dimensions, with efficiency up to six times greater than bulk material. This finding has significant implications for the development of nanogenerators capable of powering self-powered devices.
Researchers discovered a 'viscoelastic regime' in isolated protein molecules, exhibiting both elastic and viscous behavior. This finding opens up new avenues for understanding complex materials and potentially leading to advancements in protein engineering.
Researchers at Oregon State University have successfully prototyped a new energy technology that captures and uses low-to-medium grade waste heat from various sources. The system achieved an impressive 80% conversion efficiency in turning wasted heat into cooling capability, outperforming current approaches.
Researchers found that ice makers in four different refrigerators increased rated energy consumption by 12 to 20 percent, with three-fourths of the extra energy used for heaters. This study aims to improve efficiency and inform federal minimum efficiency standards for refrigerators.