04-10-2017   -   Chemistry

Wed 4 Oct 2017. The Nobel Prize in Chemistry 2017 was awarded to Jacques Dubochet University of Lausanne, Switzerland, Joachim Frank, Columbia University, New York, USA and Richard Henderson, MRC Laboratory of Molecular Biology, Cambridge, UK for developing cryo-electron microscopy for the high-resolution structure determination of biomolecules in solution. More

  03-10-2017   -   Physics

Tue 3 Oct 2017. The Nobel Prize in Physics 2017 was divided, one half awarded to Rainer Weiss, the other half jointly to Barry C. Barish and Kip S. Thorne "for decisive contributions to the LIGO detector and the observation of gravitational waves". More

  02-10-2017   -   Medicine

Mon 2 Oct 2017. The Nobel Prize in Physiology or Medicine 2017 was awarded to Jeffrey C. Hall (University of Maine, Maine, ME, USA), Michael Rosbash (Brandeis University, Waltham, MA, USA), and Michael W. Young (Rockefeller University, New York, NY, USA) "for their discoveries of molecular mechanisms controlling the circadian rhythm". More

  01-08-2017   -   Energy

Tue 1 Aug 2017. Engineers produce long lasting, energy density battery. The new research have applied a new twist to the old chemistry behind batteries. The result is a battery that takes advantage of intercalation and complexation chemistry to make the cathodes rechargeable to a larger extent, greatly extending its life. This is the first time a novel calcium hydroxide interlayer is used to block the poisonous zinc ions through complexation which will allow the battery to maintain its high energy density over 900 cycles. More

  27-07-2017   -   Physics

Tue 27 July 2017. New transistor concept developed. Transistors, as used in billions on every computer chip, are nowadays based on semiconductor-type materials, usually silicon. As the demands for computer chips in laptops, tablets and smartphones continue to rise, new possibilities are being sought out to fabricate them inexpensively, energy-saving and flexibly. The new transistors could be based on a completely different principle. They use metal nanoparticles which are so small that they no longer show their metallic character under current flow but exhibit an energy gap caused by the Coulomb repulsion of the electrons among one another. Via a controlling voltage, this gap can be shifted energetically and the current can thus be switched on and off as desired. More

  25-07-2017   -   Chemistry

Sun 25 July 2017. A new chemical reaction with potential to speed drug development. Chemists have long sought to develop new reactions for the direct conversion of simple hydrocarbon building blocks into valuable materials such as pharmaceuticals in a way that dependably creates the same chemical bonds and orientations. A new method has been developed for the direct conversion of a variety of double bond-containing materials into useful products. More

  27-02-2017   -   Nuclear

Sun 27 Feb 2017. New laser spectroscopy technique to understand atomic and nuclear structure of newly discovered radioactive atoms. The heavy actinide element actinium (Ac) was produced in a series of experiments using the particle accelerator at Louvain-la-Neuve, Belgium. The quickly decaying atoms of this element were captured in a gas chamber filled with Ar, sucked into a supersonic jet, and spotlighted with laser beams. By doing so, the outer electron in a different orbit is brought. A second laser beam then shoots the electron away. This ionizes the atom, meaning that it becomes positively charged and is now easy to manipulate and detect. The colour of the laser light is like a fingerprint of the atomic structure of the element and the structure of its nucleus. More

  30-01-2017   -   Physics

Mon 30 Jan 2017. Researchers have, for the first time, measured the lifetime of an excited state in the nucleus of an unstable element. This is a major step toward a nuclear clock that could keep even better time than today's best atomic timekeepers. Atomic clocks, the most precise chronometers we now have, are based on precise knowledge of the frequency of specific transitions between defined energy levels in the electron shells of certain atoms. Theoretical studies suggest that nuclear clocks that make use of analogous changes in the energy states of atomic nuclei could provide even more accurate frequency standards for timekeeping purposes. Research focused on the first experimental detection of a specific energy transition in the nucleus of a particular unstable isotope of the element thorium (Th-229), the only nucleus known to have the properties required for the development of a practical nuclear clock. More

  22-12-2016   -   Nuclear

Thu 22 Dec 2016. New technique for measuring radiation damage on the fly, thus continuously assess aging of materials in a high-radiation environment, such as nuclear reactor vessel, in real-time. The analytical method potentially allowing for continuous monitoring of these materials without the need to remove them from their radiation environment. This could greatly speed up the testing process and reduce the preventive replacement of materials that are in fact safe and usable. More

  04-12-2016   -   Chemistry

Sun 4 Dec 2016. The International Union of Pure and Applied Chemistry (IUPAC) has approved the name and symbols for four newly discovered elements: nihonium (Nh), moscovium (Mc), tennessine (Ts), and oganesson (Og), respectively for element 113, 115, 117, and 118. The exploration of new elements continues, and scientists are searching for elements beyond the seventh row of the periodic table. More

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