Sentences with word «nanomagnet»

Spin transfer torque is the transfer of the spin angular momentum from conduction electrons to the magnetization of a ferromagnet and enables the manipulation of nanomagnets with spin currents rather than magnetic fields,» explained Gyung - Min Choi, who recently completed his PhD in materials science and engineering at Illinois.

Complex nanomagnet arrays with exotic geometries can be designed and fabricated to exhibit desired physical phenomena and subtle effects.

Current magnetic storage and recording devices, such as computer hard disks, contain nanomagnets with two polarities, each of which is used to represent either 0 or 1 — the binary digits, or bits, used in computers.

For the first time, nanomagnet islands or arrays were arranged into an exotic structure (called «shakti») that does not directly relate to any known natural material.

«Pulses of electrons manipulate nanomagnets and store information: Scientists use electron pulses to create and manipulate nanoscale magnetic excitations that can store data.»

The discovery may herald the production of synthetic nanomagnets, which could lead to improvements in MRI cancer scans and new ways to isolate medically useful molecules.

Other possible applications, all of which require further investigation, include high permeability polymers, nanomagnets for medical diagnostics applications, materials for the 3D printing of metal articles, and silicon - based materials for thermoelectric and solar power components.

This thermal ratchet is made from a material known as «artificial spin ice» which comprises of a number of tiny nanomagnets — made of the nickel - iron alloy Permalloy and which are 200 times smaller than the diameter of a human hair.

The precise properties, like spin orientation, of such nanomagnets can store information.

Researchers at Johannes Gutenberg University Mainz (JGU) have achieved a major breakthrough in the development of methods of information processing in nanomagnets.

Nevertheless, highly anisotropic nanomagnets usually require critical raw materials (CRMs) such as rare earth or platinum group metals.

The islands were lithographically printed onto a substrate, arranged in a square - lattice pattern, with the north and south poles of each nanomagnet meeting and interacting at their four - pronged vertices.

As the material cools, the nanomagnets are ordered according to the interactions of their poles at the vertices.

«Nanomagnets are so small that their behavior becomes relatively simple.

«The challenge — you have to get the nanomagnets to flip their north and south poles to show how they interact.

Los Alamos National Laboratory staff scientist Cristiano Nisoli explained, «The emergence of magnetic monopoles in spin ice systems is a particular case of what physicists call fractionalization, or deconfinement of quasi-particles that together are seen as comprising the fundamental unit of the system, in this case the north and south poles of a nanomagnet.

The research team's new annealing protocol — heating the material to a high temperature where their magnetic polarity is suppressed (here, about 550 degrees Celsius)-- allows the nanomagnets to flip their polarity and freely interact.

This asymmetry is reflected in the distribution of the magnetic field at the boundaries of the nanomagnet array and causes the magnetization to rotate in a preferred direction.

They coupled a gene that senses cellular stretch with another gene that functions as a nanomagnet.

In this research, iron - nickel nanomagnets were fabricated in shakti arrays, a structure with 2, 3, and 4 nanomagnet islands meeting in periodic arrays (resulting in vertexes with 2, 3, and 4 coordination numbers).

Then, the structure underwent a thermal treatment by heating it above the Curie temperature (the temperature at which the nanomagnets become magnetic).

Skyrmions, for example, are a kind of nanomagnet, composed of a spin - correlated ensemble of electrons acting as a topological magnet on certain microscopic surfaces.

But how might you go about moving or manipulating these nanomagnets at will to store the data you want?