The Center for X-Ray Optics new technique for creating high-resolution zone plates involves two separate patterns of alternating zones fabricated sequentially and overlaid on the same wafer.
With the new technique the zones were spaced approximately 15 nanometers apart (30 nanometers between the centers of each gold zone). Future improvements will be directed at narrower zones with no gaps and even closer spacing.
Zone Plate Lenses Capable of Better than 15-Nanometer Resolution
Progress in nanoscience and nanotechnology depends not only on examining the surfaces of things but on seeing deep inside biological organisms and material structures to identify what they’re made of — and what electronic, magnetic, optical, and chemical processes may be in play.
For measuring internal variations in shape, organization, magnetism, polarization, or chemical make-up over distances of a few nanometers (billionths of a meter), x-ray microscopy not only complements electron microscopy but also offers important advantages. The XM-1 x-ray microscope at the Advanced Light Source, located at the Department of Energy’s Lawrence Berkeley National Laboratory, uses bright beams of "soft" x-rays to produce images that not only reveal structures but can identify their chemical elements and measure their electromagnetic and other properties as well.
Paul Preuss | EurekAlert!
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MPQ scientists achieve long storage times for photonic quantum bits which break the lower bound for direct teleportation in a global quantum network.
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Tiny pores at a cell's entryway act as miniature bouncers, letting in some electrically charged atoms--ions--but blocking others. Operating as exquisitely sensitive filters, these "ion channels" play a critical role in biological functions such as muscle contraction and the firing of brain cells.
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The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.
Over the past few years, the building blocks of storage media have gotten ever smaller. But further miniaturization of the current technology is hindered by...
With innovative experiments, researchers at the Helmholtz-Zentrums Geesthacht and the Technical University Hamburg unravel why tiny metallic structures are extremely strong
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14.12.2017 | Life Sciences