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Related Concept Videos

Long-term Potentiation01:35

Long-term Potentiation

Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre- and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
Long-term Potentiation01:25

Long-term Potentiation

Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
Hebbian LTP
LTP can occur when presynaptic neurons...
Magnetism01:30

Magnetism

Magnets are commonly found in everyday objects, such as toys, hangers, elevators, doorbells, and computer devices. Experimentation on these magnets shows that all magnets have two poles: one is labeled north (N) and the other south (S). Magnetic poles repel if they are alike and attract if unlike. Moreover, both poles of a magnet attract unmagnetized pieces of iron.
An individual magnetic pole cannot be isolated. No matter how small, every piece of a magnet contains a north pole and a south...
Magnetic Fields01:28

Magnetic Fields

A moving charge or a current creates a magnetic field in the surrounding space, in addition to its electric field. The magnetic field exerts a force on any other moving charge or current that is present in the field. Like an electric field, the magnetic field is also a vector field. At any position, the direction of the magnetic field is defined as the direction in which the north pole of a compass needle points.
A magnetic field is defined by the force that a charged particle experiences...
Ferromagnetism01:31

Ferromagnetism

Materials like iron, nickel, and cobalt consist of magnetic domains, within which the magnetic dipoles are arranged parallel to each other. The magnetic dipoles are rigidly aligned in the same direction within a domain by quantum mechanical coupling among the atoms. This coupling is so strong that even thermal agitation at room temperature cannot break it. The result is that each domain has a net dipole moment. However, some materials have weaker coupling, and are ferromagnetic at lower...
Magnetic Force01:18

Magnetic Force

In addition to the electric forces between electric charges, moving electric charges exert magnetic forces on each other. A magnetic field is created by a moving charge or a group of moving charges known as the electric current. A magnetic force is experienced by a second current or moving charge in response to this magnetic field. Fundamentally, interactions between moving electrons in the atoms of two bodies produce magnetic forces between them.
The magnetic force acting on a moving charge...

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Related Experiment Video

Updated: Jul 12, 2026

Gradient Echo Quantum Memory in Warm Atomic Vapor
10:00

Gradient Echo Quantum Memory in Warm Atomic Vapor

Published on: November 11, 2013

CHEMICAL PHYSICS: Magnetic Wires Promise Giant Step for Memory.

R F Service

    Science (New York, N.Y.)
    |August 31, 2007
    PubMed
    Summary
    This summary is machine-generated.

    Researchers developed a low-cost method for creating tiny magnetic posts. This breakthrough could enable data storage devices with terabit per square centimeter capacity, significantly boosting data density.

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    Last Updated: Jul 12, 2026

    Gradient Echo Quantum Memory in Warm Atomic Vapor
    10:00

    Gradient Echo Quantum Memory in Warm Atomic Vapor

    Published on: November 11, 2013

    Fabrication of Magnetic Platforms for Micron-Scale Organization of Interconnected Neurons
    09:54

    Fabrication of Magnetic Platforms for Micron-Scale Organization of Interconnected Neurons

    Published on: July 14, 2021

    Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains
    07:42

    Optimizing Magnetic Force Microscopy Resolution and Sensitivity to Visualize Nanoscale Magnetic Domains

    Published on: July 20, 2022

    Area of Science:

    • Materials Science
    • Nanotechnology
    • Data Storage

    Background:

    • Current data storage technologies face limitations in density.
    • The demand for higher data storage capacity is rapidly increasing.

    Purpose of the Study:

    • To develop a cost-effective method for fabricating high-density magnetic storage elements.
    • To explore the potential of nanostructured magnetic materials for future data storage applications.

    Main Methods:

    • Utilized a simple and inexpensive technique to create porous plastic templates.
    • Employed these templates for molding nanoscale magnetic posts with high precision.

    Main Results:

    • Successfully created porous plastic templates capable of molding magnetic posts.
    • Achieved unprecedented density of 10(12) posts per square centimeter.
    • Demonstrated the potential for terabit-per-square-centimeter data storage.

    Conclusions:

    • The developed method offers a promising pathway towards ultra-high-density data storage.
    • This advancement could revolutionize magnetic storage technology and capacity.