Physics

NASA Television Updates Broadcast Schedule for Cargo Resupply Mission

NASA commercial cargo provider SpaceX now is targeting no earlier than 10:36 a.m. EST Friday, Dec. 15, for its 13th commercial resupply services mission to the International Space Station.

New ultra-thin diamond membrane is a radiobiologist's best friend

Measuring dosage of radiation can be challenging, especially when working with low-energy protons, but researchers have now developed an ultra-thin diamond membrane that can measure the number of protons in a radiation dose with almost perfect accuracy. The detector attaches to a charged-particle microbeam and enables the delivery of radiation to an area less than 2 micrometers wide.

New ultra-thin diamond membrane is a radiobiologist's best friend

Depending on the dose and the target, radiation can cause incredible damage to healthy cells or it can be used to treat cancer and other diseases. To understand how cells respond to different doses of radiation, scientists need to direct precise amounts of energy to specific areas of the cell. Measuring dosage can be challenging, however, especially when working with low-energy protons.

Laser-boron fusion now 'leading contender' for energy

Scientists argue that the path to hydrogen-boron fusion is now viable, and may be closer to realization than other approaches, such as the deuterium-tritium fusion approach currently being pursued.

Gecko adhesion technology moves closer to industrial uses

While human-made devices inspired by gecko feet have emerged in recent years, enabling their wearers to slowly scale a glass wall, the possible applications of gecko-adhesion technology go far beyond Spiderman-esque antics. A researcher is looking into how the technology could be applied in a high-precision industrial setting, such as in robot arms used in manufacturing computer chips.

Plasmonic biosensors enable development of new easy-to-use health tests

Researchers have developed a biosensor that enables creating a range of new easy-to-use health tests similar to home pregnancy tests. The plasmonic biosensor can detect diseased exosomes even by the naked eye. A rapid analysis by biosensors helps recognize inflammatory bowel diseases, cancer and other diseases rapidly and start relevant treatments in time. In addition to using discovery in biomedicine, industry may use advanced applications in energy.

Chemical 'pressure' tuning magnetic properties

Unusual, tiny vortexes spinning on the surface of certain magnets could offer a way to reduce the energy demands of computers. Controlling the vortexes is key. Scientists found that chemical substitution in a well-studied magnet acted as an effective knob in tuning the magnetic properties. Adding just a few slightly larger atoms to the magnet expanded the crystal lattice, or atomic arrangement. The expansion applied a "negative chemical" pressure on the system. The pressure changed the character of the magnetism and stabilized an exotic vortex phase called the skyrmion lattice.

New CERN facility can help medical research into cancer

Today, the new CERN-MEDICIS facility has produced radioisotopes for medical research for the first time. MEDICIS (Medical Isotopes Collected from ISOLDE) aims to provide a wide range of radioisotopes, some of which can be produced only at CERN thanks to the unique ISOLDE facility. These radioisotopes are destined primarily for hospitals and research centres in Switzerland and across Europe.

Engineers create artificial graphene in a nanofabricated semiconductor structure

Experts at manipulating matter at the nanoscale have made an important breakthrough in physics and materials science. They have engineered "artificial graphene" by recreating, for the first time, the electronic structure of graphene in a semiconductor device.

NASA Awards Contract for Safety, Mission Assurance Support

NASA has awarded the Safety and Mission Assurance Support Services III (SMASS III) contract to A-P-T Research, Inc. of Huntsville, Alabama, for a broad range of services at the agency’s Headquarters in Washington, Kennedy Space Center in Florida, and various sites supported by Kennedy’s programs and projects.

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