Sentences with phrase «external magnetic field»

Their research advances the understanding of how these materials can be manipulated without having to discover new materials, change the chemical concentration or apply external magnetic fields.

But a strong external magnetic field can reduce that resistance by bringing the magnetic moments into alignment.

In the system, nanoparticles injected into the brain convert a gentle, external magnetic field into heat, which triggers heat - sensitive ion channels that have been genetically engineered into neurons.

Recently Mohammed Sheikh and his colleagues at the University of Illinois at Urbana - Champaign statistically analyzed the timings, depths and durations of the short - term dips, finding that they are distributed according to a «power law» characteristic of a continuous phase transition (such as magnets realigning themselves in the presence of external magnetic fields).

For targeted non-invasive medicine delivery, these nano - swimmers could be coated with medicine, injected into the bloodstream and roughly steered by external magnetic fields.

To control the orientation of the microtubes, the team used external magnetic fields.

His team exposed iron oxide particles to external magnetic fields with the aim of creating friction and heat, and indeed found that the warmed tPA acted faster, raising the speed of clot - busting by another factor of 10 (1,000 in total).

That would eliminate the need for external magnetic fields and would offer another avenue for dissipationless transport of electrical current.»

«In contrast, the highly crystalline and uniformly flat 2 - D CGT, together with its small intrinsic anisotropy, allows small external magnetic fields to effectively engineer the anisotropy, enabling an unprecedented magnetic field control of ferromagnetic transition temperatures.»

But a second generation is already up and running, and encompasses this new study, in which electrons» own spin - orbit interaction acts on them as if there were a real external magnetic field, even if there is not.

«When we apply a specific external magnetic field, the magnetization in these discs creates whirls,» said Dr. Benjamin Krüger working in the group of Professor Mathias Kläui at the Institute of Physics at JGU.

This time there would be no need for huge external magnetic fields or ultra-low temperatures to get the electrons moving in unison.

«These larger crystals are easier to control using external magnetic fields, and they will not aggregate when those fields are removed, which will make them much more useful in practical applications, including drug delivery.»

Physicists at the Paul Scherrer Institute have now demonstrated that a novel superconducting state is only created in the material CeCoIn5 when there are strong external magnetic fields.

9 DIY refrigerator magnet: Apply an external magnetic field to some hot metal.

Made by Shuhei Miyashita and colleagues at Massachusetts Institute of Technology, a 1.7 - centimetre - long origami robot made of plastic and containing a magnet can be «programmed» by an external magnetic field.

They found that at temperatures just above and below 70 degrees Kelvin, they could readily magnetize the SmAl2 alloy using an external magnetic field.

A tiny robot made of plastic can be «controlled» by an external magnetic field

Now scientists have found through close examination that external magnetic fields can be used to coordinate and accelerate some of these flips — perhaps clearing the way to new and improved read / write heads and greater storage density.

We present a third, distinct bonding mechanism: perpendicular paramagnetic bonding, generated by the stabilization of antibonding orbitals in their perpendicular orientation relative to an external magnetic field.

The direction in which the spin density wave moves depends on the direction of the external magnetic field.

«Due to their low energy, it is significantly easier to influence them using parameters such as pressure or an external magnetic field.»

Hence, by means of the external magnetic field, one can directly control the quantum state which is linked to superconductivity.

Any living thing, when placed in a magnetic field, itself becomes a magnet as the atoms in its cells try to shift their electrons to oppose the external magnetic field.

To overcome these issues, Steven J. Jonas, Paul S. Weiss, Xiaobin Xu and colleagues sought to create biocompatible nanospears that can be configured to transport DNA into cells precisely using an external magnetic field without either damaging the cells or having to use chemical propellants.

When an external magnetic field was applied to the tissues, the nanoparticles warmed up the samples from within.

The magnetoelectric effect is when electric polarization occurs under the influence of an external magnetic field and magnetization occurs under the influence of an electric field.

Using a computer, they simulated how the DMI and external magnetic fields of varying strengths affected the modes and properties of the particles.

Instead of permanently depositing particles through immunoaffinity, anti-EpCAM coated magnetic microparticles were trapped over the untreated PDMS surface by an external magnetic field and were then released by readily removing the magnet for CTC collection.

The biomolecules labeled with superparamagnetic particles and the use of an external magnetic field enabled the movement of the biomolecules to be easily controlled and detected with an ultra-sensitive magnetic sensor.

«You can think of it as a little compass needle that responds to external magnetic fields.»

«The influence of laser light on the state of the atoms can be compared to the magnetization of solid crystals by an external magnetic field in classical physics,» Dr. Christian Groß, leader of the project, explains.

The shape of the arc is kept stable by an external magnetic field, which ensures the wastes always enter the hottest part of the arc.

Another way of controlling inter-particle collisions at ultracold temperatures is to turn on an external magnetic field.

(The image on the left shows a spin wave in a rubidium gas parallel to an external magnetic field; the picture on the right shows the spin wave perpendicular to an external magnetic field.

At the heart of data reading and recording devices is a property called magnetoresistance (MR), in which the electrical resistance of a material changes in response to the presence of an external magnetic field.

Taking a look at the classical Hall effect that is known from undergraduate physics, the interaction of moving electrons and an external magnetic field forces the electrons to move to one side of the plate, perpendicular to their original direction.

Dr Mainak Majumder from the Faculty of Engineering said because graphene droplets change their structure in response to the presence of an external magnetic field, it could be used for controlled drug release applications.

Nickel iron is ferromagnetic; an external magnetic field can align its atoms.

When a microrobot is exposed to an external magnetic field — the offboard power source, given the difficulty in shrinking batteries to the size of bacteria — it begins to spin and move in a manner similar to bacterial flagella, courtesy of the iron oxide debris.

Yet the broken nanoparticles chains will re-form if the temperature is raised, the oil liquefies and an external magnetic field is applied to the particles.

March 23, 2015 - This is due to the complex effect of metastable state of the magnetic dynamic nanoparticles and the possible relaxation characteristic of the formed chain - like structure when decreasing the external magnetic field, the Brownian dynamics of particles...

The external magnetic field drives those particles into target cells.

There are two main theoretical models, one based on small magnetite particles that may reorient in an external magnetic field and the other based on the idea that upon photo excitation a certain type of molecules in the eye of a bird support a radical pair formed by two electrons which evolve under the joint action of the Zeeman interaction with the external magnetic field and the hyperfine interaction with the supporting molecule.

The challenge in doing this is that the ions» environment, i.e., the atoms to which it is bound as well as the fluid in which it is dissolved, changes the external magnetic field in the vicinity of the atomic nucleus, which, in turn, affects the precise measurement of the magnetic moment.

«It uses a set of eight magnetic sensors, whose intrinsic properties make them suitable to detect the direction of an external magnetic field,» Canon Bermudez, one of the researchers on the project, told Digital Trends.