Articles tagged with Capacitance
Researchers developed a method to distinguish between similar odours by detecting small electrical changes in olfactory receptors. This innovation enables more precise sensors for industrial applications, such as odour screening.
Researchers have developed a new model of the electric double layer, accounting for various ion-electrode interactions. The model predicts a device's ability to store electric charge and aligns with experimental results.
Researchers designed a new supercapacitor that can store more energy through electrochemical phenomena, with increased capacitance when exposed to UV light. The device uses ZnO nanorods and liquid electrolyte, enabling fast-charging capabilities and opening doors for innovative applications in electronics.
A research team at Pohang University of Science & Technology has developed a new type of hafnia-based ferroelectric memory device that can store 16 levels of data per unit transistor. The device operates at low voltages, high speeds and exhibits stable characteristics.
Researchers have developed microcapacitors with record-high energy and power densities, paving the way for on-chip energy storage in electronic devices. By engineering thin films of hafnium oxide and zirconium oxide, scientists achieved a negative capacitance effect, allowing for greater amounts of charge to be stored.
Researchers at GIST developed high-performance OECT devices based on poly(diketopyrrolopyrrole) (PDPP)-type polymers, achieving high charge carrier mobility and volumetric capacitance values. The optimized material exhibited a figure-of-merit value of over 800 F V^-1 cm^-1 s^-1.
Scientists have developed a new supercapacitor with a carbon nano-onion core structure, achieving the highest level of energy storage ever recorded. This breakthrough could lead to significantly lighter and faster-charging energy storage devices.
Researchers at HSE MIEM develop mathematical model to enhance supercapacitor electrical capacitance by utilizing polymers with large pore sizes. This enables storing more energy and preventing potential adverse effects.
Researchers at IISc have developed a novel ultramicro supercapacitor with enhanced electrochemical capacitance, exceeding 3000% increase in capacitance under certain conditions. The device uses Field Effect Transistors as charge collectors and solid gel electrolyte for improved electron mobility.
Researchers at MIT and Harvard University have developed a new optogenetics-based tool to manipulate neuron excitability using light. By altering the electrical capacitance of cell membranes, they can change how strongly neurons respond to electrical input, with potential applications in learning, aging, and brain disorders.
Researchers developed a light-controllable time-domain digital coding metasurface that can manipulate microwave reflection spectra by time-varying light signals. The metasurface platform produces harmonics based on phase modulation, generating symmetrical harmonics and white-noiselike spectra.
Researchers at UC Berkeley have developed a new material that can significantly reduce the energy required to control advanced silicon transistors. The engineered crystal composed of hafnium oxide and zirconium oxide achieves negative capacitance, which boosts performance by reducing voltage requirements.
Researchers at KAUST have developed a new type of wireless strain sensor that offers improved sensitivity and accuracy. The sensor uses fragmented electrodes to detect changes in electrical resistance or capacitance, allowing for real-time monitoring of material strains.
The new fuel gauge uses electrical capacitance volume tomography to digitally recreate a fluid's 3D shape based on its electrical properties. This technology can provide reliable measurements to prevent satellites from colliding and keep them operational for longer.
Scientists create a metal oxide@MOF composite with enhanced durability and capacitance, showing promise for electrochemical capacitor energy storage devices. The composite exhibits high cycling stability, specific capacitance, and energy density.
A new proximity capacitance imaging sensor has been developed with high sensitivity and resolution, detecting sweat pores between finger ridges. This advancement aims to improve security in various fields such as authentication and life sciences.
Researchers from EPFL have solved the puzzle of negative capacitance in perovskite solar cells by identifying a slow modification of current passing through contact, regulated by mobile ionic charge. This discovery sheds light on interaction between photovoltaic effect and ionic conductivity.
Negative capacitance field-effect transistors (NC-FETs) have been proposed as a way to make traditional transistors more efficient by adding a thin layer of ferroelectric material. The technology has the potential to transform the semiconductor industry and enable chips that compute far more while requiring less frequent charging.
Researchers elucidated the operation mechanism of ferroelectric-HfO2-based transistors and memories, enabling sub-60mV/dec subthreshold slope and high-capacity nonvolatile storage. The study's findings will guide device design for ultralow power operating NCFETs and high-capacity FTJ memories.
Scientists at UC Santa Cruz and LLNL fabricated electrodes using printable graphene aerogel to build a porous three-dimensional scaffold loaded with pseudocapacitive material. The novel electrodes achieved the highest areal capacitance, while maintaining performance without sacrificing energy storage capacity per unit mass or volume.
Researchers at Monash University have discovered structural capacitance elements in mutated proteins associated with human diseases, particularly cancers. These elements enable mutations to trigger a gain-of-function, shedding light on protein evolution and the engineering of highly evolvable proteins.
A new framework developed by MIT researchers guarantees stability in microgrids supplying local power to communities, reducing the reliance on main power grids. The design allows for modular power systems that can be easily reconfigured for changing needs, providing a lower-cost solution with guaranteed reliability and security.
New leaf sensor technology measures plant water stress and detects wilting points, allowing for precise irrigation. The system uses a smartphone app to manage details, promising significant improvements in water-use efficiency.
A team of researchers created a highly sensitive soft capacitive sensor made of silicone and fabric that moves with the human body to detect movement. The sensor, which combines the qualities of both materials, improves sensitivity to movement by limiting deformation while stretching.
A new optically tunable capacitor has been developed by Israeli researchers, featuring embedded metal nanoparticles. The capacitor's capacitance is tunable by illumination and exhibits a strong frequency dispersion, allowing for high degree of tunability.
A new phenomenon in spintronics was discovered by altering capacitance by manipulating spins in the opposite way from normal magnetocapacitance. This inverse effect allows for more parameter space to design devices, potentially useful in magnetic sensors for computer hard drives and random access memory chips.
Researchers developed a new method to characterize graphene's properties without applying disruptive electrical contacts. By using microwave resonators, they can investigate the material's resistance and quantum capacitance.
Scientists from PTB have determined the Boltzmann constant with an accuracy of 1.9 ppm, fulfilling a key condition for the redefinition of the kelvin unit. This achievement will enable the kelvin to be based on fundamental constants, providing a more stable and reliable definition.
North Carolina State University researchers have developed elastic, touch-sensitive fibers that can detect strain, twisting, and touch. The fibers use liquid metal alloy to store electric charge, enabling different electronic signals based on touch location.
Researchers found that human pyramidal neurons have a specific membrane capacitance that is half of the universal value for biological membranes, improving signal processing and communication within and between cortical neurons. This unique property may be an evolutionary adaptation to compensate for the larger brain and cells in humans.
Prof. Ki Jin Han of Ulsan National Institute of Science and Technology has received the 2015 IEEE CPMT Best Paper Award for his work on improved electromagnetic modeling of TSVs, a technology crucial for 3D integration. The award recognizes his research on modeling depletion capacitance and substrate layer thickness effects.
A team of researchers at KAIST has developed a flexible, wearable sensor that can directly measure goose bumps on the skin, which is caused by sudden changes in body temperature or emotional states. The sensor uses a coplanar capacitor and detects piloerection through a simple linear relation between deformation and capacitance change.
A new flexible pressure sensor was developed at the University of California, Davis, using a drop of liquid in a polydimethylsiloxane sandwich. The sensor successfully measured human pulse and has potential applications in smart gloves and contact lenses for biosensing and monitoring.
The Boltzmann constant has been re-determined by PTB scientists using Dielectric-Constant Gas Thermometry, with an uncertainty of 8 ppm. This achievement demonstrates that DCGT is suitable for determining fundamental constants and brings the country closer to redefining the kelvin unit.
MIT physicists have discovered a new physical phenomenon that can greatly enhance capacitance in transistors, which may lead to increased clock speed and reduced heat. The discovery, reported in the journal Science, challenges existing understanding of physics and has potential implications for computer chip design.
Researchers have made a direct measurement of graphene's quantum capacitance, revealing its unique properties. The findings hold promise for biosensor applications, chemical sensing devices, and flexible displays.
UCSB researchers discovered that a 'dielectric dead layer' at the metal-insulator interface limits the size of thin-film capacitors. The team found metals with good screening properties can improve capacitance properties.