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diffuse-interface field approach to modeling self
diffuse-interface field approach to modeling self

... Chapter 5. DIFA to modeling dipole-dipole interaction related phenomena……..103 5.1 Internal dipole field and ferroelectric domain stabilization..........................103 5.1.1 Phase field simulation on ferroelectric domain stabilization……..103 5.1.2 Charge compensation and aging mechanisms in iro ...
Photonic Devices and Systems (ELEC ENG 4EM4)
Photonic Devices and Systems (ELEC ENG 4EM4)

... it will gradually turn itself into a plane wave as it propagates in free-space, and becomes more difficult to be collected in a distance away, for a limited receiver surface • How can we force the EM wave to propagate along a specific direction without any spreading in the 3D world? – That comes to ...
A Frequency Domain Approach for Computing the Lorentz Force in
A Frequency Domain Approach for Computing the Lorentz Force in

Winds from accretion disks driven by the radiation and
Winds from accretion disks driven by the radiation and

A closed slot-line resonator filter
A closed slot-line resonator filter

... frequency structure simulator (HFSS), Version 8 from Ansoft at Corporation. With a realistic surface resistance of 160 77 Kelvin and 1.95 GHz, the Q is expected to be 56 500. Later process improvements resulted in an average Q of 58 000. This high Q with such a significant reduction in size is possi ...
meg systems
meg systems

... Electric and magnetic fields are orthogonal. The magnetic field strength decreases as 1/r2 with distance (r) from the source. Magnetic fields are measured in units of tesla (T, fT, pT). ...
M - Unife
M - Unife

... equilibrium states of the system. ...
Smartphone Touchless Screen
Smartphone Touchless Screen

... • The magnetic field might have an effect on the storage memory of the smartphone • The app works better when the magnetic field is clearer (long enough magnet) • Paradoxes: magnet vs smartphone… ...
3 electric and magnetic fields inside the body
3 electric and magnetic fields inside the body

... Chapter 2 describes the fields to which people are exposed. Exposure to these fields in turn induces fields and currents inside the body. This chapter describes and quantifies the relationship between external fields and contact currents with the current density and electric fields induced within th ...
Fast Assembly of Gold Nanoparticles in Large
Fast Assembly of Gold Nanoparticles in Large

Printable Version
Printable Version

... volcanic rock deposits. When fossils are found sandwiched between such volcanic layers, they can be dated by association--i.e., a minimum and a maximum age can be assigned. 3. A chronometric dating method based on the fact that amino acids progressively change to mirror image forms following the dea ...
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Slide 1

... total mass of the system was constant and the total internal energy decreased by the amount extracted, otherwise it was constant. High viscosity was simulated through the momentum integrators to shorten the running time, because the integrators were stable for only five to ten seconds and after eac ...
Shielding of Magnetic Fields by Eddy Currents
Shielding of Magnetic Fields by Eddy Currents

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Electric and Magnetic Fields and Your Health

PHY418 Particle Astrophysics
PHY418 Particle Astrophysics

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Magnetic resonance imaging of laser polarized liquid xenon
Magnetic resonance imaging of laser polarized liquid xenon

... A second promising application of laser polarized xenon MRI is to investigate two-phase ~liquid-gas! phenomena. As a demonstration, we imaged xenon spins evaporating from the liquid into the vapor ~Fig. 2!, as well as condensing from the vapor into the liquid ~Fig. 3!. These images were acquired usi ...
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Theory of electromagnetic fields

Pore-Scale Controls on Reaction-Driven Fracturing - DUO
Pore-Scale Controls on Reaction-Driven Fracturing - DUO

... reactive mineral, dissolution takes place at the mineral surface. This immediately creates a supersaturated solution with respect to the replacing mineral, which will then precipitate in the immediate vicinity of the dissolving surface. A nanometer-scale confined fluid film between the parent and da ...
Neutron stars and pulsars
Neutron stars and pulsars

... If a spinning neutron star has a dipole magnetic field and the dipole axis and spin axis are not aligned to each other, it will emit electromagnetic radiation. As rotational energy is extracted, we can obtain an estimate of the neutron-star magnetic field from the measurement of the rate of change i ...
PDF only - at www.arxiv.org.
PDF only - at www.arxiv.org.

Pore-Scale Controls on Reaction
Pore-Scale Controls on Reaction

chapter5 - Homework Market
chapter5 - Homework Market

... Rigel also produces more energy from each square meter of its photosphere than does the sun. • The sun, in turn, produces more energy from ...
Chemically prepared magnetic nanoparticles
Chemically prepared magnetic nanoparticles

Physics of Magnetism and Magnetic Materials
Physics of Magnetism and Magnetic Materials

From the Sun`s atmosphere to the Earth`s atmosphere
From the Sun`s atmosphere to the Earth`s atmosphere

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Ferrofluid



A ferrofluid (portmanteau of ferromagnetic and fluid) is a liquid that becomes strongly magnetized in the presence of a magnetic field.Ferrofluid was invented in 1963 by NASA's Steve Papell as a liquid rocket fuel that could be drawn toward a pump inlet in a weightless environment by applying a magnetic field.Ferrofluids are colloidal liquids made of nanoscale ferromagnetic, or ferrimagnetic, particles suspended in a carrier fluid (usually an organic solvent or water). Each tiny particle is thoroughly coated with a surfactant to inhibit clumping. Large ferromagnetic particles can be ripped out of the homogeneous colloidal mixture, forming a separate clump of magnetic dust when exposed to strong magnetic fields. The magnetic attraction of nanoparticles is weak enough that the surfactant's Van der Waals force is sufficient to prevent magnetic clumping or agglomeration. Ferrofluids usually do not retain magnetization in the absence of an externally applied field and thus are often classified as ""superparamagnets"" rather than ferromagnets.The difference between ferrofluids and magnetorheological fluids (MR fluids) is the size of the particles. The particles in a ferrofluid primarily consist of nanoparticles which are suspended by Brownian motion and generally will not settle under normal conditions. MR fluid particles primarily consist of micrometre-scale particles which are too heavy for Brownian motion to keep them suspended, and thus will settle over time because of the inherent density difference between the particle and its carrier fluid. These two fluids have very different applications as a result.
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