Science news articles about 'external magnetic field'

  • New fabricated material changes color instantly in response to external magnetic field

    ... change color instantly and reversibly when external magnetic fields acting upon the microspheres change ... researchers embedded arrays of spatially ordered magnetic iron oxide nanostructures within each ...
  • Commencement 2008: Student innovation could improve data storage, magnetic sensors

    ... in use today have magnetic parts that make it impossible for them to operate reliably in an external magnetic field according to Morrow. With his modified non-magnetic STM, Morrow was able to use an ...
  • Magnetic nanoparticles navigate therapeutic genes through the body

    ... which are situated on the planted gene or on the planted cell can with the aid of an external magnetic field be specifically directed to the location of the damage. There the researchers determine, ...
  • Magnetic nano-'shepherds' organize cells

    ... by nudging free-floating human cells to form chains in response to external magnetic fields. These chains, the researchers said, could potentially be integrated into approaches for creating human ...
  • A card-swipe for medical tests

    ... . Magnetoresistance is the change in a material's resistance to electrical current when an external magnetic field is applied to the material. That change usually is not more than 1 percent. But ...
  • Spinning into the future of data storage

    ... mp3 players, thanks to an exciting new field of research called 'organic spintronics'. Dr ... components which are very sensitive to external magnetic fields, known as magnetic read-heads. These read- ...
  • Ship-in-a-bottle kit on a microchip

    ... cavities on the chip. As the particles contain iron oxide, they group together when they are magnetized by an external magnetic field. The scientists construct the magnetic field with four coils so ...
  • Spin-polarized electrons on demand

    ... determine its magnetic properties and are systematically controllable by an external magnetic field. This is precisely the goal of spintronics (also called spin electronics): systemically control ...
  • Spin-polarized electrons on demand

    ... determine its magnetic properties and are systematically controllable by an external magnetic field. This is precisely the goal of spintronics (also called spin electronics): systemically control ...
  • MIT uses nano-origami to build tiny electronic devices

    ... . Embedding gold wires in the material. A current running along the gold wires interacts with an external magnetic field, creating a Lorentz force that lifts the face. This technique is a form of ...
  • Indirect brain treatment may relieve Parkinson's symptoms

    External magnetic fields or spine implants could provide alternatives to invasive brain surgery.
  • Shape matters in the case of cobalt nanoparticles

    ... two different particle types when external magnetic fields are applied and then removed. In the absence ... NIST physicist Angela Hight Walker, imply that the external magnetic fields have a strong impact ...
  • This Robot Will Crawl Through Your Veins

    ... , called Virob, has no internal power source - it derives its power from external magnetic fields. Or maybe it's that the bug is designed to infiltrate human veins, autonomously crawling around our ...
  • Capping a two-faced particle gives duke engineers complete control

    ... of material. This discovery allows these particles to be compatible with optical traps and external magnetic fields, allowing for total control over the particles' positions and orientations. "Past ...
  • A road of no return

    ... guiding light). Through the application of an external magnetic field, this specially designed waveguide induces ... of small ceramic rods placed in a strong magnetic field," said Dr Zheng Wang, a lead ...

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