New horizons in inner space

Article Abstract:

Recent research on the interiors of carbon fullerene molecules may deepen understanding of how matter acts when confined. P.M. Ajayan and Sumio Iijima made progress in using high-energy caps as targets for making openings in fullerenes by using laser-evaporated vapor to insert microscopic bits of lead within the fullerene. This resulting nanocomposite may lead to the production of filled carbon nanostructures.

Molecular structure, Carbon allotropes

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The positron probe: beams of antimatter are providing some of the most detailed images yet of defects in semiconductors

Article Abstract:

Researchers at the University of the German Federal Armed Forces have been able to use a beam of antimatter particles to search for defects in a semiconductor. They are using a microscope in which a pulsed beam of positrons is trained on the sample being investigated. Positrons entering the material are attracted to electrons and repelled by atomic nuclei.

Innovations, Semiconductors, Microscope and microscopy, Microscopes, Microscopy, Antimatter

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A jump that would prove Newton wrong

Article Abstract:

A physicist proposes that a mechanical phenomenon called the modified newtonian dynamics (MOND) would make objects spontaneously jump over a very small distance, violating Newton's second law. He believes the foundations of physics have to be revised to include MOND, although other researchers are skeptical about the theory.

Analysis, Mechanics, Celestial, Celestial mechanics, Theoretical physics, Classical mechanics

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