Sentences with phrase «piezoelectric materials»

The use of piezoelectric materials was their original innovation, and it allowed them to simultaneously measure the flexing and the rotation of the teeter - totter beam.

For it to operate underwater, the team used piezoelectric materials in its construction so that it will be powered by the bobbing of the waves.

The Greek word piezein means «to squeeze or press,» and piezoelectric materials generate a charge when squeezed or deformed or smashed — like smashing two rocks together to produce a flash.

These materials are called piezoelectric materials.

The team chose a polymer called polyvinylidene fluoride over ceramic piezoelectric materials because in wind tunnel tests and simulated rain it deformed more, creating higher peak voltages.

This is often done with piezoelectric materials, which are able to change shape in the presence of an electric voltage.

«One of world's thinnest piezoelectric materials identified.»

There are a handful of naturally occurring materials, known as piezoelectric materials, that generate electricity if you bend, stretch or apply another mechanical force to them, and vice versa — if you apply a voltage across them, they'll deform accordingly.

Now, the M.D. Anderson Chair Professor and mechanical engineering department chairman at the University of Houston Cullen College of Engineering, Pradeep Sharma, and his doctoral student, Matthew Zelisko, in collaboration with scientists at Rice University and University of Washington, have identified one of the thinnest possible piezoelectric materials on the planet — graphene nitride.

Inspired by Miles's prior work, Hall and his graduate students Michael Kuntzman and Donghwan Kim built a miniature pressure - sensitive teeter - totter in silicon that has a flexible beam and integrated piezoelectric materials.

This new tag uses a flexible strip containing piezoelectric materials, which generate electricity through physical movement.

Yao and co-workers investigated a plastic - based piezoelectric material, polyvinylidene fluoride (PVDF), which is low cost and readily undergoes mechanical strain.

By fabricating piezoelectric materials into cantilevers that resemble a diving board, these devices can oscillate from ambient vibrations and generate electricity.

Voit is looking to create a similar effect for his PVDF - carbon fibers, which are far better piezoelectric materials than nylon and would contract in response to an electric current.

The best - performing piezoelectric materials are currently made from lead zirconium titanate (PZT).

The new materials, which generate an electric field when squeezed, copy the crystal structure of conventional piezoelectric materials but use bismuth instead of lead.

A new generation of lead - free piezoelectric materials could lead to greener actuators, sensors and even ultra-dense data storage.

Such techniques are ideal for studying piezoelectric materials, which convert electricity into mechanical force.

She discovered that a lightweight and flexible piezoelectric material called polyvinylidene fluoride responded to mechanical stress with a similar electrical output to the Pacinian corpuscle: two sharp voltage peaks indicating the start and finish of an applied pressure.

This new energy harvesting device uses an electrochemical process similar to that in lithium ion batteries to produce electricity instead of a physical process like the other piezoelectric materials, which will likely make it inexpensive to manufacture.

«When you put in an impulse» to traditional piezoelectric materials, «they respond very well, in microseconds.

Although piezoelectric materials, which convert kinetic stress to power, can be found in movement - powered watches, highways, and dance floors, most of them are too rigid to be useful in garments.

Despite these cool ways of using piezoelectrics, developing nanoscale piezoelectric materials is new (obviously), and nanomaterial production has controversies all of its own.

To her, the branches looked like piezoelectric materials, devices that produce electricity from vibrations and she began to imagine a renewable energy technology that could harness the energy in the wind and rain.

The key is a novel form of piezoelectric materials.

Described in the journal Applied Physics Letters, from AIP Publishing, the 2 - millimeter - wide device uses piezoelectric materials, which turn mechanical strain into electric signals.

In piezoelectric materials, mechanical stress causes crystals to electrically polarize, and vice versa.

Aluminium nitride is a piezoelectric material, so the mechanical motions would generate electrical signals that could be detected by the qubits.

Once there, its piezoelectric materials generate a heart - stimulating electrical pulse in response to ultrasound energy beamed to it by another implant in the left chest cavity.

The team used the strain induced by an electric field applied to a piezoelectric material (which deforms mechanically in response to an electric field) to manipulate the chirality of the domain wall.

The technology is based on the piezoelectric effect, which results in the generation of electricity from deformation of a piezoelectric material, such as when it is stretched.

To make efficient vibration harvesters from PVDF, researchers must stack the polymer in multiple layers, improving the output current and reducing the electrical impedance that is inherent to piezoelectric materials.

So far, however, attempts to harvest this energy using vibrating plates or piezoelectric materials, which produce electricity when compressed or bent, have mustered only a few milliwatts.

The bullets contain a disk of piezoelectric material that releases electricity on impact; there are no batteries or moving parts.

The new process, which the researchers have called «acoustowetting,» works on a chip made of lithium niobate — a piezoelectric material capable of converting electrical energy into mechanical pressure.

But such hybrid generators would likely be limited to small - scale applications, because piezoelectric materials aren't very energy - dense.

«Although we made a lot of efforts, there are still small gaps between the side walls of the electrodes and the piezoelectric materials.»

They then coupled diamond, a material that changes its shape very little with electric voltage, with aluminum nitride, a piezoelectric material, and embedded the IDT inside their new SAW device.

IDT electrodes are typically placed on top of piezoelectric materials to perform this conversion.

That piezomagnetic material is then attached to a piezoelectric material, which converts the vibrations to an oscillating electrical voltage.

It is built out of piezoelectric materials that vibrate when exposed to an electric field.

Piezoelectric materials, which generate an electric current when compressed or stretched, are familiar and widely used: think of lighters that spark when you press a switch, but also microphones, sensors, motors and all kinds of other devices.

Piezoelectric materials can generate electricity from a mechanical force; conversely, they also can generate a mechanical strain from an applied electrical field.

In 2010, physicists put the largest system yet into a superposition: a 40 - micrometre - long strip of piezoelectric material, which expands and contracts in response to voltage changes.

The tip - sonicator is a probe made of piezoelectric material that shakes at a low, 20Hz frequency when voltage is applied.

Piezoelectric materials, which generate an electric current when compressed or stretched, are familiar and widely used: think of lighters that spark when you press a switch, but also microph... Read more

Abstract: Piezoelectric materials, which generate an electric current when compressed or stretched, are familiar and widely used: think of lighters that spark when you press a switch, but also microphones, sensors, motors and all kinds of other devices.

Scientists at the University of Bolton in the U.K. are developing a textile fiber, called hybrid photovoltaic - piezoelectric material, that absorbs energy from its wearer's body movements and the surrounding elements, including the wind, rain, and sun — Captain Planet would be proud!