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Chiral, stacked nanoparticle lines efficiently filter light polarizations. They allow only left-circularly polarized light to pass (blue) and retain right-circularly polarized light (red). (Martin Mayer)
Germany: Optical Analysis

New and Efficient Method of Fabrication for Optically Active Nano-Layers

In an article by Patrick Probst et al. published in Nature Materials, researchers led by Prof. Dr. Andreas Fery and Dr. Tobias A.F. König of the Leibniz Institute of Polymer Research Dresden describe a new design strategy for the fabrication of thin nanostructured films for active control of circularly polarized light. It is based on chiral nanoassembly by stacking two substrates with nanoparticle chains.

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n this artist’s rendering, amyloid plaques are interspersed among neurons. These aggregates of misfolded proteins disrupt and kill brain cells, and are a hallmark of Alzheimer’s disease. (National Institute of Aging)
USA: New Treatment

Novel Drug Prevents Plaques Associated with Alzheimer’s Disease

Amyloid plaques are pathological hallmarks of Alzheimer’s disease (AD) — clumps of misfolded proteins that accumulate in the brain, disrupting and killing neurons and resulting in the progressive cognitive impairment that is characteristic of the widespread neurological disorder. In animal models, a new compound modulated a key enzyme, reducing or eliminating production of these problematic protein fragments.

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