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MRI on the cheap and on the go

Researchers at Lawrence Berkeley National Laboratory have developed a novel laser-based MRI technique that offers enhanced sensitivity and time resolution. The approach uses atomic magnetometry and separates signal encoding and detection steps, enabling optimized sensitivity and reducing costs.

SourceDOE/Lawrence Berkeley National Laboratory·JournalProceedings of the National Academy of Sciences·DateSep 5, 2006

Raiders of the lost dimension

Researchers observe dimensional reduction in Han purple pigment at low temperatures, which affects magnetic waves' behavior and could aid understanding of quantum computers. The discovery provides insights into the quantum mechanics of the universe, potentially explaining mysterious properties of other materials.

New method developed for exploring frustrated systems

Physicists at Penn State University have developed a new method to study frustration in complex systems, including materials with magnetic moments. The researchers created artificial spin ice using electron beam lithography, allowing them to manipulate the strength of frustrated interactions and probe individual elements within the sys...

SourcePenn State·JournalNature·DateJan 18, 2006

Magnetic stars

Researchers found stable ring-shaped magnetic field configurations in magnetic A-stars, White Dwarf stars, and neutron stars, supporting the 'fossil field' hypothesis. These fields can persist for hundreds of millions of years, surviving the star's life span.

SourceMax-Planck-Gesellschaft·JournalNature·DateOct 15, 2004

New tool tackles nursing shortage

A new instrument, Decisional Involvement Scale (DIS), assesses the level of involvement registered nurses have in decisions affecting their work environment and patient care. The DIS can help hospitals identify areas for improvement and implement changes to reduce staff turnover and enhance quality of care.

SourcePenn State·JournalJONA The Journal of Nursing Administration·DateJun 6, 2003

Team tests 150-ton magnet in Japan

A 150-ton magnet has passed its initial operating test in Japan, producing a magnetic field of 13 Tesla and storing 640 megajoules of energy. The successful test demonstrates superconducting performance parameters and manufacturing methods for larger magnets planned for the International Thermonuclear Experimental Reactor (ITER).

Several new single-molecule magnets discovered

New single-molecule magnets have been discovered by Indiana University researchers, offering a promising solution for increasing the density of digital information in hard drives and other devices. The breakthrough could enable storage densities up to 30 terabits per square centimeter, surpassing current bests.

Nanomagnets Could Store Computer Data

Researchers at Cornell University have developed nanomagnets that can store data, with the potential to gather up to 100 times more information in the same space as present-day magnetic data disks. The devices are tiny bar magnets as small as 25 nanometers long and require new physics to make a system work.

Radically New Type Of Surgery Tested On First Patient

Neurosurgeons successfully tested a new magnetic surgery system on the world's first human patient, allowing for precise navigation of surgical tools through the brain. The innovative technology has far-reaching potential for various applications, including implanting electrodes, repairing aneurysms, and delivering targeted treatments.

Birds Of A Feather: The Physics Of Flocks

Researchers John Toner and Yuhai Tu develop a theory explaining how birds move as a single unit despite frequent misjudgments and limited visibility. By making analogies to physics phenomena like magnet alignment and fluid flow, they provide insights into other animal collectives and even auto traffic flow.

SourceAmerican Institute of Physics·JournalPhysical Review E·DateSep 25, 1998

Moving DNA Molecules With Magnetic Tweezers

Using magnetic tweezers, scientists can move DNA molecules in three dimensions, opening up possibilities for non-invasive surgical tools and targeted medicine delivery. The device works by using electromagnetic fields to manipulate iron oxide-coated beads attached to the DNA molecule, allowing precise control over movement.