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IMAGE: a, Optical character of the bistable electrochromic display. b, Bistable electrochromic strategies based on proton coupled electron transfer mechanism, adjusting the interface charge transfer between the polymer and the electrode,. view more
Credit: by Yuyang Wang, Hui Nie, Jinsong Han, Yaxun An, Yu-Mo Zhang and Sean Xiao-An Zhang
The development of low-energy-consumption and user-friendly electronic displays has become a long-term goal for future global sustainable development. Bistable electronic display, which requires very little electric drive to turn pages without consuming additional power to continuously display information/images, is one of the very good potential alternatives. Reflective display technologies with partial/complete bistable characteristics include e-ink, cholesteric liquid crystal, and electrochromic technologies, etc. They display information in light reflection mode, which can still be read under high-brightness outdoor sunligh
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IMAGE: The illustration visualizes how modulation of electron bunches via laser is used to produce microbunches which emit laserlight. view more
Credit: Tsinghua University
The most modern light sources for research are based on particle accelerators. These are large facilities in which electrons are accelerated to almost the speed of light, and then emit light pulses of a special character. In storage-ring-based synchrotron radiation sources, the electron bunches travel in the ring for billions of revolutions, then generate a rapid succession of very bright light pulses in the deflecting magnets. In contrast, the electron bunches in free-electron lasers (FELs) are accelerated linearly and then emit a single super-bright flash of laser-like light. Storage ring sources as well as FEL sources have facilitated advances in many fields in recent years, from deep insights into biological and medical questions to materials research, technology development, and quantum
New technology from Purdue University and Indiana University School of Medicine innovators may one day help patients who suffer devastating vocal injuries from surgery on the larynx. A collaborative team consisting of Purdue biomedical engineers and clinicians from IU has tissue-engineered component tissue replacements that support reconstruction of the larynx.
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A German-Polish research team has succeeded in creating a micrometer-sized space-time crystal consisting of magnons at room temperature. With the help of the scanning transmission X-ray microscope Maxymus at Bessy II at Helmholtz Zentrum Berlin, they were able to film the recurring periodic magnetization structure in a crystal. Published in the
Physical Review Letters, the research project was a collaboration between scientists from the Max Planck Institute for Intelligent Systems in Stuttgart, Germany, the Adam Mickiewicz University and the Polish Academy of Sciences in Pozna? in Poland.
Order in space and a periodicity in time
A crystal is a solid whose atoms or molecules are regularly arranged in a particular structure. If one looks at the arrangement with a microscope, one discovers an atom or a molecule always at the same intervals. It is similar with space-time crystals: however, the recurring structure exists not only in space, but also in time. The smallest comp
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IMAGE: Michael Grätzel, winner of the BBVA Foundation Frontiers of Knowledge Award in Basic Sciences. view more
Credit: BBVA FOUNDATION
The BBVA Foundation Frontiers of Knowledge Award in the Basic Sciences category has gone in this thirteenth edition to Paul Alivisatos (University of California, Berkeley, United States) and Michael Grätzel (Ecole Polytechnique Fédérale de Lausanne, Switzerland) for their fundamental contributions to the development of new nanomaterials already in use for the production of renewable energies and in latest-generation electronics. Grätzel s groundbreaking work includes the invention of a dye-sensitized solar cell named after him, reads the committee s citation, while Alivisatos has made pioneering contributions in using semiconductor nanocrystals for energy and display applications.