Articles tagged with Electrical Resistance
Scientists are developing new technologies at the atomic scale to create ultra-low-power electronics. This breakthrough has the potential to revolutionize the electronic industry, enabling smaller, more efficient devices that can be powered by longer-lasting batteries.
Rensselaer researchers predict the electrical response of metals to extreme pressures, which could benefit computer chip design. The study found that specific pressure decreases electrical resistance in different materials.
Researchers developed a new heat-based technique for counting and measuring microscopic particles, offering advantages in simplicity, affordability, and versatility. The technique has been tested effectively for objects in the 200 micron to 90 micron range and is expected to be able to measure individual cells.
Micro-machining enables the creation of almost flat Fresnel lenses that significantly increase solar panel efficiency. The new design allows for a more precise focus of incident light, resulting in a four-fold increase in peak power compared to traditional panels.
A new study demonstrates that electrical resistivity in composite materials follows a staircase-like pattern with increasing conducting particle concentration. The findings, published in European Physical Journal B, use percolation theory to explain the discrete series of resistances observed.
Researchers at Penn University have developed a computer model to optimize the properties of metal nanowire networks for flexible touchscreens. The model helps identify the optimal balance between transparency and electrical resistance, leading to improved device performance.
Scientists found superconductivity in carbon disulfide at -449°F, a highly disordered state that defies conventional understanding of superconductivity. The discovery could lead to new insights into the interplay between superconductivity, magnetism, and structural disorder.
Researchers tracked carbon dioxide movement and concentration using the world's deepest Electrical Resistance Tomography (ERT) system. The system provided time-lapse images of CO2 injection into a geologic formation, offering insights into geological sequestration techniques.
Researchers at Ulsan National Institute of Science and Technology have developed a hybrid transparent and stretchable electrode combining graphene and silver nanowires. The new material exhibits high electrical and optical performance, preserving mechanical flexibility and resistivity even when bent or folded.
Researchers at RIKEN have created a new transistor that uses electrostatic accumulation of charge on a strongly-correlated material to trigger bulk switching of electronic state. The device operates at room temperature and requires only 1V to switch the material from an insulator to a metal.
Researchers have discovered a highly complex structure in the mantis shrimp's club that enables it to withstand 50,000 high-velocity strikes. The unique structure could inspire new materials for military body armor, vehicle frames, and aircraft frames, reducing weight while maintaining impact resistance.
Researchers at Johns Hopkins University have developed a new phase-change memory alloy that can store more data, last longer and work faster than current materials. The breakthrough could lead to the development of more efficient computer systems, movie discs and other data storage media.
Recent tests by NIST suggest device reliability is a major issue with carbon nanotubes. The material can sustain high current densities but slowly degrades under constant current, leading to circuit failures in about 40 hours.
Phase change materials exhibit surprisingly low thermal conductivity in both crystalline and amorphous states. The researchers found that resonance bonding between atoms in the crystalline state impairs heat conduction. This property makes phase change materials suitable for developing fast, non-volatile, and energy-saving main memories.
Researchers from NIST have created a new method to make neutral atoms behave as if they are charged particles in an electric field. This allows for the simulation and study of fundamental electrical phenomena, including superconductivity and the quantum Hall effect. The synthetic electric fields mimic the behavior of charged particles ...
Researchers at the University of Sheffield discovered that certain doped-oxide ceramics exhibit non-Ohmic behavior, with electrical resistance changing in response to voltage. The effect is consistent regardless of temperature or atmosphere, but time and final-state resistance are temperature-dependent.
A team of scientists created nano-patterned superconducting thin films that can change their electrical resistance in response to an external magnetic field. The discovery could lead to new electronic devices, as the material's fluctuating response to a magnetic field could result in switchable superconducting wires.
Researchers at Rice University and the University of Oulu discovered that carbon nanotube brush contacts can significantly reduce resistance in electrical commutators, leading to improved performance and reduced energy loss. The study found a 10-fold decrease in resistance compared to traditional copper-carbon composite brushes.
Researchers find pseudogap co-exists with superconductivity, suggesting it may compete with the phenomenon. This discovery could lead to higher-temperature superconducting materials, bringing practical applications closer.
A new study by Rensselaer Polytechnic Institute reveals that blocks of carbon nanotubes can be used to create effective and powerful pressure sensors. The material's unique electrical and mechanical properties make it suitable for applications such as automobile tire pressure gauges and semiconductor manufacturing equipment.
Researchers develop technique to identify and repair small cracks in high-performance aircraft wings and polymer composites. A structure infused with electrically conductive carbon nanotubes can detect and repair stress-induced cracks, regaining 70% of its original strength.
Researchers at Brookhaven National Laboratory discovered a new mechanism underlying colossal magnetoresistance, a phenomenon that enables dramatic changes in electrical resistance. The findings have the potential to improve data storage devices with higher density and reduced power requirements.
Researchers use simultaneous measurements to investigate electron-electron interactions near the metal-insulator transition, revealing a quantum critical point and temperature-dependent interaction strength. The study provides a theory that quantitatively explains phenomena in two-dimensional systems.
Researchers have confirmed the existence of an odd-parity superconductor, a new electronic state in materials that can carry electric current without resistance. The strontium ruthenate Sr2RuO4 SQUID experiment provides direct evidence for this previously theorized but never demonstrated state.
A Ph.D. student at Virginia Tech is using electrical resistivity to measure changes in underground water movement in sinkholes. He measured a rapid change in water movement under a sinkhole during Hurricane Ivan's downpour, finding preferential flow paths and potential contaminants.
Researchers at Penn State have developed a new type of sensor that can detect hydrogen levels with incredible sensitivity. The titania nanotube sensors are 200 times more sensitive than previously used materials and offer several advantages, including high response rates and minimal interference from other gases.
Researchers have successfully measured electrical resistance and magnetic properties of lithium under extreme conditions. The discovery reveals multiple transitions in the element's structure, reevaluating its properties.
Researchers at UB have developed an ultrasmall magnetic sensor that produces a record change in resistance in an ultra-small magnetic field, exceeding all previous records. The sensor's capabilities could enable the storage of 50 or more DVDs on a hard drive the size of a credit card.
Researchers at UNC Chapel Hill and NC State University found that rotating a carbon nanotube controls its ability to conduct electrical current, enabling easier design of electronic devices and actuating systems at the nanoscale level.
Researchers developed smart concrete that changes electrical resistance in response to strain or stress, allowing for real-time vehicle weighing. The technology has the potential to reduce costs and increase efficiency in highway monitoring.
Researchers observed ballistic conductance in multi-walled carbon nanotubes at room temperature, allowing large current densities to flow without heating. This phenomenon could lead to ultra-small electronic devices with improved performance and efficiency.