Articles tagged with Heat
Researchers discovered a new, eco-friendly thermoelectric material made from calcium, cobalt, and terbium that can generate electricity through temperature differences. The material has the potential to power implantable medical devices, charge mobile devices, and even reuse waste heat in power plants.
The new study reconstructs historical ocean subsurface temperature change with improved accuracy, revealing larger ocean energy accumulation and increased confidence in climate change assessments. This advances our understanding of global warming driven by the Earth's energy imbalance.
Researchers at UC Davis have discovered new types of cage-like compounds called clathrates that can convert waste heat into electricity. The compounds, which trap an atom inside a larger cage, show promise for improving thermoelectric devices.
Scientists have reinvented abandoned heat energy converter technology using graphene, making it seven times more efficient. The new prototype can convert heat into electricity with an electronic efficiency of 9.8%, a significant improvement over traditional methods.
Researchers developed an experiment to detect quantum events in ultra-thin films, enhancing understanding of basic phenomena in nano-sized systems. The study uses a novel 'nano-trampoline' setup to measure specific heat and demonstrate the existence of quantum criticality.
A new film developed by Yao Zhai and colleagues can dissipate the sun's thermal energy, resulting in a cooling effect. The material is lightweight, easily conforms to curved surfaces, and relatively easy to mass produce, making it a promising solution for passive radiative cooling.
Scientists have found that electrons in vanadium dioxide move in unison, making it a poor conductor of heat. The material's unique properties make it suitable for applications like thermoelectric systems and window coatings.
A team of researchers at Ohio State University has developed a device that converts waste heat into electricity, producing a voltage output 10 times higher than previous results. The innovation uses a composite material of nickel and platinum to amplify the voltage output through magnetism.
Researchers at UNIST have created a new type of high-performance thermoelectric material that can be directly painted onto any surface. This innovation enables the efficient collection of heat energy from industrial waste, potentially powering vehicles and other applications.
New research investigates how native California wild mustard species respond to temperature stress, highlighting natural variation in thermotolerance. The study identifies the Boechera genus as a tractable system for studying thermotolerance and gaining insights into heat stress mechanisms.
Scientists have found that the UVR8 receptor in Chlamydomonas reinhardtii activates a safety valve to dissipate excess energy as heat. The study reveals a second protective role of these receptors, producing an anti-UV 'sunscreen'.
Researchers found that amphetamine slows down body temperature rise and masks fatigue in rats, allowing them to run longer. However, this mechanism can lead to dangerous overheating of muscles, posing a significant health risk.
Scientists have developed a new solar smart window that can turn opaque on demand for added privacy, while also powering other devices using excess energy. The innovative window uses liquid crystals and an amorphous silicon layer to achieve this functionality.
Scientists have created a new thermoelectric material that can convert waste heat into electricity at an unusually high rate, producing 22 watts per square centimeter. This breakthrough could lead to more efficient energy conservation and reduced CO2 emissions by harnessing abundant and free fuel sources.
Researchers from the University of Extremadura and Sapienza University of Rome have discovered a new type of convection in granular fluids. This lateral-wall thermal convection is produced by inert walls and exhibits distinct properties compared to traditional fluid dynamics.
Researchers at UCR have discovered a way to control the flow of heat in electronic devices using semiconductor nanowires. By confining acoustic phonons to these nanostructures, they can alter their energy spectrum and improve thermal management.
A team of scientists has determined a more precise version of the second law of thermodynamics and applied it to small quantum systems. The study found that violations of the law are rare, but can occur with significant probability in small quantum objects.
Scientists found that fungi can break down biomass to release heat without emitting fine particles or VOCs. To achieve sustained use, optimal conditions must be determined for nutrient, moisture, and temperature.
Researchers have created a flexible, wearable thermocell that harnesses body heat to generate electricity. The device uses gel-based electrolytes and combines two different redox pairs to produce a current. This innovation overcomes previous challenges in wearable energy harvesting and storage devices.
A study found that using an electric fan increased heart rate and core temperature in elderly adults, suggesting that fans may not be effective in mitigating cardiovascular strain. The researchers also discovered that the elderly's impaired sweating capacity limits the effectiveness of electric fans.
A joint NASA-JAXA mission observed two persistent hot towers south and east of Hermine's center, influencing its strengthening. Repeated cloud-top height measurements suggested these towers, lasting 9-12 hours, could eject energy into the atmosphere.
Researchers create a cooling textile that utilizes infrared radiation, allowing for efficient heat dissipation and reducing the need for air conditioning. The material is made from polyethylene and has various characteristics desirable in clothing material.
Researchers at MIT create a bubble-wrapped, sponge-like device that captures ambient sunlight and concentrates it to heat water to boiling temperatures. The structure achieves 20% conversion efficiency and can be used for desalination, residential heating, wastewater treatment, and medical tool sterilization.
Researchers investigate relationship between hydration heat and concrete strength, establishing a preliminary hydration heat model to predict heat release in later-age concrete. The study finds that increasing concrete strength reduces hydration heat, improving pipe cooling effects and controlling temperature peaks.
New computer modeling suggests that solid-state thermophotovoltaics (TPV) could rival combined-cycle turbine systems when combined with thermal storage using liquid metal. TPV operates on the same principle as solar cells but converts infrared radiation to electricity.
Researchers aim to improve energy efficiency in software applications by increasing understanding of their impact on power usage. The three-year project will develop novel automatic analyses and tools to support decision-making, with the goal of enabling software engineers to create more energy-efficient code.
Researchers have discovered a new class of high thermal conductivity materials that can improve cooling for power electronics and other applications. The silicon dioxide nanoparticles, coated with ethylene glycol, can conduct heat at potentially higher efficiency than existing materials.
Researchers discovered that iron's ability to transmit heat matches previous estimates, suggesting energy necessary for geodynamo has been available since early Earth's history. The study used a laser-heated diamond anvil cell to mimic planetary core conditions and study iron's thermal conductivity.
A new study published by Concordia University researchers confirms that cool roofs provide net energy and monetary savings in colder climates. Using modelling software, they found annual energy expenditure savings of $4-14 per 100 square meters in four cold-climate cities.
Researchers found that hornbills' beaks account for up to 20% of their non-evaporative heat loss, helping conserve water in hot desert environments. This unique adaptation may provide an advantage over panting, a method used by birds to cool off.
Researchers create new method to quantify the change in thermal energy storage during phase transition from photon gas to Bose-Einstein condensate, enabling precise measurement of natural constants and potential applications in high-precision thermometry.
University of Minnesota researchers record first-ever videos of heat moving through materials at the nanoscale, traveling at the speed of sound. This breakthrough could aid in designing better, more efficient materials for a wide range of applications, including personal electronics and alternative-energy technologies.
Researchers create single-particle engine that can store and generate energy, operating at 0.3% efficiency with a power output of 10^-22 watts. The device has potential applications in quantum thermodynamics and nano engineering.
Researchers found that electron diffusivity plays a crucial role in harnessing thermoelectric power from waste heat. The study sheds light on the fundamental physical process behind this phenomenon.
Researchers have successfully demonstrated a strong non-contact heat transfer channel using light, achieving near-field radiative heat transfer between parallel objects at nanoscale distances. The team's approach has the potential to revolutionize energy conversion applications by converting wasted heat from combustion engines back to ...
Ankur Jain, an assistant professor at UTA, has received a five-year, $500,000 NSF CAREER grant to develop a fundamental understanding of thermal transport in Li-ion batteries. His goal is to improve the safety and efficiency of these batteries for widespread applications.
Researchers at Oak Ridge National Laboratory are developing experimental pretreatments to improve the cost-effectiveness of biofuel production. A new app, FuelEconomy.gov, helps consumers make informed buying decisions and save fuel. Meanwhile, a heat pump technology developed by ORNL can reduce energy consumption in cold climates by u...
Researchers developed a versatile platform for nanoscale thermal measurements using magnetic resonance, optical, and atomic force microscopy. The technique provides nanometer-resolved thermal conductivity maps and can be used to investigate heat flow in nanostructures and catalytic exothermal reactions.
A team of international researchers has discovered a way to convert waste heat into electrical energy using magnetic spin waves. By exploiting the spin Seebeck effect, they were able to demonstrate that thermal energy can be converted into electrical energy in an adjacent metallic layer.
Researchers at Okinawa Institute of Science and Technology discover anomalies in electron behavior on liquid helium systems, shedding light on zero-resistance phenomenon in semiconductors. The study sheds new insights into quantum physics and its applications.
Researchers at KIT have developed a method to estimate groundwater temperature from surface temperatures and building densities measured by satellites, revealing that 95% of areas studied had higher groundwater temperatures than surface temperatures. This discovery opens up new possibilities for sustainable energy production in cities.
Researchers found that Rudolph's luminescent nose is effective as a fog light due to its maximum level of redness visible to mammals. However, excessive heat loss poses a risk to Rudolph's hypothermia, highlighting the importance of high-calorie foods.
At the nanoscale, heat radiates from one surface to another in a vacuum 10,000 times faster than expected. This discovery has significant applications in next-generation information storage and devices that convert heat into electricity.
Researchers at Northwestern University have developed a new thermoelectric material that converts waste heat to electricity more efficiently than previous materials. By doping tin selenide with sodium, they increased the material's performance, enabling it to produce significantly more electricity from the same amount of heat input.
MIT mathematicians have developed a formula to calculate the maximum amount of heat exchanged between two objects separated by distances shorter than the width of a single hair. The formula uses material properties and separation distance as parameters, allowing for optimization of devices such as thermophotovoltaics.
A new study from the University of Minnesota used a network of 180 sensors to capture detailed temperature patterns across the Twin Cities metropolitan area, highlighting the strength and variability of the urban heat island effect. The research provides valuable insights into efforts to reduce heat-related harm in metro areas globally.
Researchers from Imperial College London have discovered a method to heat ions directly using high-intensity lasers, potentially leading to faster and more efficient fusion reactions. The technique, which uses electrostatic shockwaves to accelerate ions, could be used at many laser facilities worldwide.
Researchers have used a supercomputer to simulate plasma turbulence, finding that long and short wavelength turbulence coexist and interact strongly, increasing heat losses tenfold above standard models. This discovery may inform fusion reactor design and bring us closer to practical fusion energy.
Scientists have successfully developed a method to control both heat and electricity conduction in thermoelectric materials using nanostructures. By introducing ultrasmall Ge nanodots into Si, they achieved high electric conductivity and low thermal conductivity, enabling simultaneous control of both.
Researchers at ORNL discovered the atomic mechanism behind tin selenide's high efficiency in converting temperature gradients to electricity. The material's unusual atomic vibrations help prevent 'heat leaks,' maximizing conversion into electricity.
Researchers at Georgia Institute of Technology have developed a liquid-cooling system that can be integrated directly onto chips, enabling the creation of denser and more powerful electronic systems. The system has been demonstrated to operate at temperatures significantly below those of air-cooled devices.
A University of Wisconsin-Madison study found that extreme temperatures affect urban heat islands more intensely than their nonurban surroundings. This can lead to uncomfortable summers, increased health risks, and higher energy bills for city-dwellers. Climate change projections indicate that cities will be especially vulnerable to th...
Researchers at Stanford University used thermal data and electronic tagging to identify the bluefin's favorite dining spots along the North American coastline. The study revealed that temperature changes impact energy intake, with tunas consuming prey on 90% of days observed.
A new themed issue explores the anatomy of rifting, revealing diverse extensional processes, including plate thinning, magma intrusion, and volcanism. The study documents active processes at divergent plate boundaries and transforms, synthesizing key research topics on plate extension.
A new thermal cloak developed by researchers in Singapore can render objects thermally invisible by redirecting incident heat. The active thermal cloaking system has the potential to fine-tune temperature distribution and heat flow in electronic and semiconductor systems.
Researchers develop a technology that shunts away heat generated by solar cells, cooling them and improving efficiency. The transparent overlay allows sunlight to hit the cells while radiating heat into space.
Researchers confirm coronal heating mechanism using observations from NASA's IRIS and Japan's Hinode solar observatory. Resonant absorption process converts magnetic waves into heat energy, explaining why the sun's corona is hotter than its surface.
A research team combined high-resolution observations from Hinode and IRIS with numerical simulations to detect resonant absorption in a solar prominence. This process heats the prominence through turbulent flow, providing a solution to the long-standing coronal heating problem.
Researchers Elena Belova and her team proposed a mechanism explaining why plasma fails to reach required temperatures in tokamaks. The new understanding could lead to improved control of temperature in future fusion devices, including ITER.
Graphene transistors and photodetectors will benefit from this simpler thermodynamic approach, allowing for improved performance. Researchers have discovered that the energy of ultrafast electrical currents is efficiently converted into electron heat, enabling faster operation speeds.