Âé¶¹ÒùÔº

Search results for piezoelectric

General Âé¶¹ÒùÔºics May 10, 2019

A surprising experiment opens the path to new particle manipulation methods

Researchers at Aalto University have discovered a surprising phenomenon that changes how we think about how sound can move particles. Their experiment is based on a famous experiment recognisable from high school science ...

Materials Science Apr 26, 2019

Crack propagation is asymmetric in polar materials

The ICN2 Oxide Nanophysics Group, led by ICREA Prof. Gustau Catalán, has published in Âé¶¹ÒùÔºical Review Letters how, due to flexoelectricity, cracks in ferroelectrics (switchable polar materials) propagate more easily in the ...

Materials Science Apr 19, 2019

Researchers find adding rare-earth element to piezoelectric crystals dramatically improves performance

A team of researchers from China, the U.S. and Australia has found that adding the rare-earth element samarium to piezoelectric crystals can dramatically improve their performance. In their paper published in the journal ...

Optics & Photonics Apr 18, 2019

Folding an acoustic vortex on a flat holographic transducer to form miniaturized selective acoustic tweezers

Acoustic tweezers are based on focused acoustic vortices and hold promise to precisely manipulate microorganisms and cells from the millimeter scale down to the submicron scale, without contact, and with unprecedented selectivity ...

Nanophysics Apr 15, 2019

A next-generation triboelectric nanogenerator (TENG) to realize constant current from electrostatic breakdown

Scientists have dedicated intense work in recent years to convert environmental energy into electricity to meet the ongoing demands for a cleaner and more sustainable power source. Harvesting environmental mechanical energy ...

General Âé¶¹ÒùÔºics Apr 12, 2019

SLAC develops novel compact antenna for communicating where radios fail

A new type of pocket-sized antenna, developed at the Department of Energy's SLAC National Accelerator Laboratory, could enable mobile communication in situations where conventional radios don't work, such as under water, ...

Nanophysics Apr 10, 2019

Some piezoelectric materials may be 'fakes'

Piezoresponse force microscopy (PFM) is the most widespread technique for characterising piezoelectric properties at the nanoscale, i.e., for determining the ability of some materials to generate electricity when subjected ...

Polymers Apr 10, 2019

3-D printing electrically assisted, nacre-inspired structures with self-sensing capabilities

Nacre, also known as mother of pearl is a composite, organic-inorganic material produced in nature in the inner shell layer of molluscs and the outer coating of pearls. The material is resilient and iridescent with high strength ...

Engineering Apr 1, 2019

Tiny sensors, big potential

The electrical energy from batteries powers not only the ignition system that turns the engine and moves electric vehicles but also powers almost every sensing feature of today's automobiles. Electricity turns on the car ...

Energy & Green Tech Mar 8, 2019

Researcher sees potential in generating energy from vibrations

"Everyone is trying to get free energy—from the wind, from the waves, from the sun," said Dani Levin, a Duke MEMS Ph.D. student in the lab of Professor Earl Dowell.

page 28 from 40