Sentences with phrase «of dielectric»

All those swirling lines are panels of a dielectric elastomer wrapped over a flexible polymer core.

I've chased intermittent problems that survived many scrubbings with cleaners and applications of dielectric grease that were resolved by changing the socket.

There is no problem putting a small amount of dielectric grease on the mating surface.

I squeezed a decent amount of dielectric grease into my spark plug boots and now I am wondering if it could have an effect on the ignition.

A second alternative - energy system, called Tsetse (named after the mythological African goddess of lightning), uses massive lightning - containment capacitors composed of dielectric glass and conductive metals from waste.

They observed the metal atoms becoming charged ions, clustering with up to thousands of others into metal nanoparticles, and then migrating and forming a bridge between the electrodes at the opposite ends of the dielectric material.

His most important contributions include theory of high harmonic generation by low frequency laser fields and atto - second physics, quantum optics of dielectric media, studies of Bose - Einstein condensates and their excitations (solitons, phase fluctuations), theory of entanglement, and more recently studies of strongly correlated many body atomic and quantum optical systems.

Atomic layer deposition is a layer - by - layer chemical vapor deposition - based thin - film growth technique used extensively in the electronics industry to deposit nanometer - thick films of dielectric materials on devices.

Placed around a copper cylinder, the arrangement created the illusion that the cylinder was made of a dielectric, a class of materials including porcelain and glass that do not conduct electricity and are more transparent to radio waves.

The next step is to search for evidence of dielectric breakdown in PSRs and determine if it could happen in other areas on the moon.

Research Center of Dielectric and Advanced Matter Physics and Department of Physics, Pusan National University, Busan 609 — 735, Korea.

This research opens new pathways for probing other electromechanical phenomena on the nanoscale that have not been studied before, such as charge trapping and properties of dielectric materials.

This is a pulse compressor of LFEX using 16 sheets of the dielectric multilayer film diffraction grating of 91 cm x 42 cm.

Not exact matches

Picosecond laser damage performance assessment of multilayer dielectric gratings in vacuum

Laser - induced damage of intrinsic and extrinsic defects by picosecond pulses on multilayer dielectric coatings for petawatt - class lasers

It's made of several different films: semiconductor, dielectric, and metal layers, all of which are just a few hundred nanometers thick.

The tunable dielectric and magnetic properties of metamaterials could be used in stealth technologies to cloak an object from view.

The researchers direct a beam of electrons onto a thin, dielectric foil, where the electron wave is modulated by irradiation with an orthogonally oriented laser.

Unlike metallic / dielectric hyperbolic metamaterials, hBN also provides the additional functionality of both types of hyperbolicity, allowing both the in - plane and out - of - plane crystal axes to behave metallic -(reflective) or dielectric - like (transparent) simply by changing the wavelength of the exciting light.

In this method, when a liquid droplet suspended between a pair of electrodes in dielectric oil is exposed to a direct current (DC) electric field, the droplet moves between the pair of electrodes periodically and deforms under the intense DC electric field (Fig. 1).

This high output has been implemented by a 4 - beam amplifier technology and the world's highest performance dielectric multilayer diffraction grating of a large diameter.

To develop a novel absorber that is both thin and with broadband performance, Jiang's team employed a type of thin, light periodic structure called a frequency - selective surface, which consists of an assembly of patterned conductors arranged in a two - dimensional array, usually backed by a thin dielectric, to reflect incident microwaves according to their frequency.

First - principles calculations determined that the electron barrier, established at the interface of the PEI / hexagonal boron - nitride structure and the metal electrodes applied to the structure to deliver, current is significantly higher than typical metal electrode - dielectric polymer contacts, making it more difficult for charges from the electrode to be injected into the film.

In his system, Krupenkin runs this process backwards, using the changing physical form of liquid drops between dielectric - coated plates to generate charge and therefore electrical power.

The results were reported in a recent issue of the journal Advanced Materials in a paper titled «High - performance Polymers Sandwiched with Chemical Vapor Deposited Hexagonal Boron Nitrides as Scalable High - Temperature Dielectric Materials.»

Their real breakthrough, however, is discovering the use of an intermediate dielectric coating (hafnium) to block the quenching of the free electrons in the metal by the CNTs, allowing the nanotubes to function uninhibited.

To test his idea, Krupenkin placed patches of electrodes coated very thinly with the dielectric tantalum oxide along tiny channels a few millimetres wide.

«Prior to this work we had developed a composite of boron nitride nanosheets and dielectric polymers, but realized there were significant problems with scaling that material up economically.»

The benefits of this study are directly related to the control of various optical phenomena through the dielectric polarization, and the results will help the development of future electronic and photonic devices.»

«This is part of a series of work we have done in our lab on high - temperature dielectrics for use in capacitors,» said Qing Wang, professor of materials science and engineering, Penn State.

The first change was to replace traditional copper coils with spherical dielectric resonators made of ceramic material with high permittivity and low loss.

«People have created these types of devices before, but previous attempts with dielectrics have always been paired with at least some metal,» said Willie Padilla, professor of electrical and computer engineering at Duke University.

Artistic impression of the squeezed light (plasmon) in between the metal and graphene, separated by a one - atom thick dielectric.

In a new paper, electrical engineers at Duke University demonstrate the first completely dielectric (non-metal) electromagnetic metamaterial — a surface dimpled with cylinders like the face of a Lego brick that is designed to absorb terahertz waves.

The new model uses a dielectric material rather than a metal for the nanoantennas, a change which greatly improves its efficiency and, combined with a new design approach, enables operation over a broad range of wavelengths.

As a general technique, the nanotweezers are applicable to a wide range of metal, semiconductor, polymer and dielectric nanostructures with charged or hydrophobic surfaces.

A team of physicists clocked the time it takes electrons to leave a dielectric after their generation with extreme ultraviolet light.

When asked about the durability of SRI's dielectric elastomer actuators, von Guggenberg acknowledges a need for more study but attests to a «reasonable indication» that they continue to work sufficiently long for commercial use: «For example, we ran a device for one client that produces moderate, 5 to 10 percent strains for 10 million cycles.»

The basic idea is to take a thin dielectric slab the refractive index of which gets periodically modulated by either drilling holes or installing little cylindrical posts in a grid-wise pattern.

Dielectric mirrors can have reflectivities of 99.999 percent or better at the wavelength for which they are designed.

Because of their nature, all SRI's dielectric elastomer devices exhibit a change in capacitance when they are bent or stretched.

«Our initial demonstrations include experimental and theoretical studies of more than forty representative geometries, from single and multiple helices, toroids and conical spirals, to structures that resemble spherical baskets, cuboid cages, starbursts, flowers, scaffolds, fences and frameworks, each with single and / or multiple level configurations, constructed in various materials, including semiconductors, conductors and dielectrics.»

«Because the dielectric elastomers can be purchased off the shelf and we'd use at most only a few square feet of material in each device, the actuators would be very low cost, particularly in volume production,» SRI's von Guggenberg estimates.

To make what they call spring rolls, the engineers wrap several layers of prestrained laminated dielectric elastomer sheet around a helical spring.

«Metamaterials seem simple, but their physics is more complicated,» she says, explaining that she and her team focused on dielectric metamaterials, which are built of elements that don't conduct electricity.

«This process isn't completely new to space science — electrostatic discharges can occur in any poorly conducting (dielectric) material exposed to intense space radiation, and is actually the leading cause of spacecraft anomalies,» said Timothy Stubbs of NASA's Goddard Space Flight Center in Greenbelt, Maryland, a co-author of the paper.

These visions of future technologies emerge from a technical paper titled «Inverse - designed broadband all - dielectric electromagnetic metadevices» published online today in Scientific Reports.

For example, every handheld device has hundreds of capacitors, which are dielectric components that can store and manage electric charge.

By manipulating the structure of aluminum oxide, a dielectric material, researchers were able to improve its optical and mechanical properties.

«By manipulating the structure of the aluminum oxide, which is dielectric, we've improved both its optical and mechanical properties,» says Chih - Hao Chang, corresponding author of a paper on the work and an assistant professor of mechanical and aerospace engineering at NC State.