Articles tagged with Dielectrics
Researchers at the London Centre for Nanotechnology discovered that even perfect structure in high-dielectric constant materials can lead to 'self-trapping' of charges, which affects device performance. This new understanding could open the way to suppressing undesirable characteristics in these materials.
Physicists have created the world's first heat transistor and remotely controlled nanomachines, enabling tiny refrigerators and heaters. The team also found that air pressure affects landing on Martian dunes, making low-pressure atmospheres favorable for robot landings.
Researchers at Georgia Tech have developed a new technique to create films of barium titanate nanoparticles in a polymer matrix, allowing for improved capacitors that store twice as much energy as existing devices. The technique uses tailored organic phosphonic acids to encapsulate and modify the surface of the nanoparticles.
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.
Researchers at Rice University have developed a new method to sort semiconducting nanotubes based on their dielectric constant, which is determined by their diameter. The system uses electric fields to trap and separate nanotubes of different sizes, allowing for the collection of samples with varying proportions of small and large tubes.
A new EU project is focused on developing cheaper, smaller ferroelectric films for use in microwave communication devices. These films have high dielectric permittivity and can be used to create voltage-controlled capacitors and tuneable microwave components.
T.P. Ma, Yale University professor, receives IEEE Andrew S. Grove Award for his pioneering work on CMOS gate dielectrics, a crucial technology in modern silicon chips. He has made significant contributions to increasing integrated circuit operating speed and reliability while lowering cost per function.
Researchers have found that a quantum dot's dielectric function is virtually identical to its bulk material counterpart, except near the surface. This discovery could revolutionize electronic devices by allowing for more precise control over their properties.
The new dielectric material has a high thermal stability, low moisture pick-up, and can withstand chemical-mechanical polishing. By adding porogens, the researchers lowered the dielectric constant to 1.85 while maintaining hardness and stiffness.
T.P. Ma, a Yale University professor, is honored with the 2005 IEEE Andrew S. Grove Award for his groundbreaking research on complementary metal oxide semiconductor (CMOS) gate dielectrics. His work has focused on microelectronics, semiconductors, and memory applications.
The US Navy has established a new center for nanoscience innovation in defense, which will transfer knowledge from universities to the industry. The center aims to advance nanoscale systems and devices for advanced technology, including spintronics and quantum information processing.
A new class of composites has been developed that can store electric charge more efficiently, enabling the creation of artificial muscles and tendons with improved motion. The material also has potential applications in microfluidic systems for drug delivery and smart skins for drag reduction.
MIT scientists develop polymer fibers with a 'perfect mirror' structure, enabling reflection of light across various wavelengths and potential applications in optical textiles. The breakthrough utilizes dielectric materials to control the fiber's optical properties.
Researchers have made a breakthrough in understanding a perovskite-related oxide with an extremely high dielectric constant, which remains stable over a wide temperature range. The material's unique property is attributed to the rearrangement of atomic charges without structural distortion.
Theoretical waveguide may create fast, high-bandwidth conduit for today's Internet applications. The all-dielectric coaxial cable could lead to significant miniaturization of integrated optical devices.
Scientists at the University of Illinois found that piezoelectric ceramics' properties decrease as they become thinner, affecting their performance in microelectromechanical systems. To optimize thin-film structures, researchers must understand the factors influencing material properties.
Researchers at 3M have developed a new type of reflective film made from polyester and other polymers that reflects light with great efficiency from all angles. The mirrors created by Dr. Ouderkirk and his team outperform conventional dielectric mirrors, which have limitations in reflecting light at certain angles.
A team of Penn State materials scientists has developed a new polymer material that can move significantly when an electric field is applied. The material, Poly(vinylidene fluoride-trifluoroethylene) Copolymer, exhibits electrostrictive properties and shows potential for use in artificial muscles, skin, and organs.
Researchers at Rensselaer Polytechnic Institute have created aerogels with a dielectric constant of 1.0, making them ideal insulators for computer chips. The new materials could double computing speeds and be used by industry within five years.