Articles tagged with Piezoelectricity
Researchers used zinc oxide microwires to enhance the efficiency of LEDs by creating a piezoelectric potential that tunes charge transport and carrier injection. The devices showed significant improvement in emission intensity and injection current.
Scientists at Oak Ridge National Laboratory have discovered a non-polar polymer material exhibiting up to 10 times the measured electro-active response as compared to strong piezoelectric materials. This finding has the potential to revolutionize the field of electro-active devices, including sensors, actuators, energy storage devices,...
Researchers at Northwestern University have found that piezoelectricity in GaN and ZnO nanowires increases by two orders of magnitude as the diameter decreases. This could lead to more efficient energy harvesting devices.
Researchers developed a bio-eco-friendly ceramic thin film nanogenerator that can convert tiny human movements into electrical energy without breaking down. The technology uses freely bendable piezoelectric ceramic materials to harness biomechanical forces produced by the body.
A new material has been found to have piezoelectric properties similar to lead zirconium titanate (PZT), a commonly used material in electronic devices. The development is significant as it could pave the way for 100% lead-free electronics, reducing toxicity and environmental concerns.
Researchers seek to replace lead-based PZT with a more environmentally friendly alternative that enables new applications in biological settings. Dragan Damjanovic proposes a novel approach based on polarization rotation and extension, which could lead to improved piezoelectric materials.
Researchers at McGill University have discovered a way to control the piezoelectric effect in nanoscale semiconductors called quantum dots. This enables the development of incredibly tiny new products with potential applications in solar power and nanoelectronic devices.
Researchers at MIT have developed fibers that can detect and produce sound, opening up new possibilities for wearable microphones and biological sensors. The fibers use a piezoelectric material to convert vibrations into electrical signals, allowing for high-resolution sensing applications.
Scientists have developed flexible, biocompatible rubber films that can harvest energy from body movements, such as breathing and walking. The material combines piezoelectric lead zirconate titanate with silicone rubber to create a super-thin film that can convert mechanical energy into electricity.
Researchers developed energy-harvesting rubber films that generate electricity from flexing and are highly efficient at converting mechanical energy to electrical energy. The material, composed of ceramic nanoribbons embedded onto silicone rubber sheets, could power pacemakers, mobile phones, and other electronic devices using breathin...
A group of researchers at City College of New York is developing a new way to generate power for planes and automobiles based on piezoelectrics, which convert kinetic energy into electricity. The devices might be mounted on cars or airplanes and would produce an output voltage that could run small electronic devices.
Researchers at Berkeley Lab discovered a lead-free alternative to piezoelectric materials, bismuth ferrite, which enhances the piezoelectric effect under epitaxial strain. The study demonstrates reversible phase changes in thin films of bismuth ferrite, opening up new possibilities for devices and applications.
Researchers from Monash University have designed microbot motors powered by piezoelectricity, allowing them to swim up narrow arteries and enhance surgical views. The innovative technology could revolutionize minimally invasive surgeries, making them safer and more effective.
A Texas A&M researcher has discovered a way to harness energy from sound waves using piezoelectric materials, which could enable the development of self-powered cell phones and other devices. The discovery is significant because it shows that energy can be converted at a 100% increase when materials are manufactured at a very small size.
The new flexible charge pump generator can produce an oscillating output voltage of up to 45 millivolts, converting nearly seven percent of the mechanical energy applied into electricity. This advancement resolves key issues with previous generators, such as moisture infiltration and wear, enabling more robust designs.
Researchers explored the critical role of piezoelectric materials in advancing technology, leading to breakthroughs in cell phone technology and ultrahigh resolution ink-jet printing heads. The study highlights the potential applications of PZT thin film materials for various devices, including motion sensors and optical mirrors.
Researchers discovered pure lead titanate crystals under pressure exhibit the same transitions as complex materials, displaying a morphotopic phase boundary for maximal piezoelectric properties. This breakthrough may enable low-cost but high-performance piezoelectrics.
Researchers at University of Illinois created nanowire that produces power through piezoelectric material, generating voltage when mechanically deformed. The breakthrough uses extremely sensitive and precise mechanical testing stage to accurately measure the nanowire's response to vibrations.
Penn State researchers have designed and fabricated tiny piezoelectric microactuators with controlled force, high resolution, and large displacements. The new actuators have dimensions ranging from 350 to 600 microns in length, 50 to 100 microns in width, and 5 to 6 microns in thickness.
Researchers at Georgia Institute of Technology have developed seamless circular 'nanorings' made of piezoelectric zinc oxide. These structures can be used to test electrical and mechanical coupling at the nanoscale and offer unique properties for fabricating nanoscale electromechanical systems.
Researchers have developed smaller and lighter power adapters that can convert AC to DC power for laptops, enabling compact designs. The piezoelectric transformers are suitable for various appliances requiring an AC-DC converter and transformer.
Researchers have developed nanoscale helical 'nanosprings' from zinc oxide that exhibit piezoelectric and electrostatic polarization properties. These structures could be used as sensors to detect small fluid flows, strain forces, and air flows, and as actuators in micro-systems. The new materials also display unusual electrostatic pol...
Researchers have developed computer models to predict the effects of atomic disorder on piezoelectric properties, leading to improved performance. The work paves the way for designing lead-free piezoelectric materials with enhanced properties.
Researchers at Purdue University have developed tiny, piezoelectric fans that can cool future electronics without producing electromagnetic noise or consuming excessive electricity. The fans use a ceramic material to move blades in alternate directions, reducing temperatures by up to 8 degrees Celsius.
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.
The new circular configuration increases the conversion ratio without adding volume or weight, advancing the field of piezoelectric transformers. The devices use a lead, zirconium, titanium ceramic doped with manganese and cerium, providing increased efficiency and higher conversion ratios.
Researchers have discovered that relaxor ferroelectrics can deform 10 times more under high voltage, making them ideal for medical ultrasound devices and potentially leading to breakthroughs in piezoelectric technology