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Archive for the ‘energy’ category: Page 260

Sep 12, 2019

Dynamic charge density fluctuations pervading the phase diagram of a Cu-based high-Tc superconductor

Posted by in categories: energy, nanotechnology, quantum physics

Charge density fluctuations are observed in all families of high-critical temperature (Tc) superconducting cuprates. Although constantly found in the underdoped region of the phase diagram at relatively low temperatures, physicists are unclear how the substrates influence unusual properties of these systems. In a new study now published on Science, R. Arpaia and co-workers in the departments of microtechnology and nanoscience, the European Synchrotron, and quantum device physics in Italy, Sweden and France used resonant X-ray scattering to carefully determine the charge density modulations in Yttrium Barium Copper Oxide (YBa2Cu3O7– ẟ) and Neodymium Barium Copper Oxide (Nd1+x Ba2–x Cu3O7–ẟ) for several doping levels. The research team isolated short-range dynamic charge density fluctuations (CDFs) in addition to the previously known quasi-critical charge density waves (CDW). The results persisted well above the pseudo-gap temperature T*, which they characterized by a few milli-electron volts (meV) to spread across a large area of the phase diagram.

Cuprate high temperature superconductors (HTS) are different from the Landau Fermi liquid paradigm due to quasi-two dimensionality (2-D) of their layered structure and large electron-electron repulsion. During optimal doping and the pseudo gap state (states at which less than optimal current carrier concentrations result in anomalous electronic properties), short to medium-range charge density wave order can emerge to weakly compete with superconductivity. Physicists first developed theoretical proposals of CDW and low energy charge fluctuations after first discovering HTS. Subsequently, they developed experimental evidence in selective materials and in all cuprate families. Researchers had observed long-range tridimensional CDW (3D CDW) order inside the superconductivity dome within high magnetic fields that weaken superconductivity or in epitaxially grown (deposition of a crystalline layer on a crystalline substrate) samples.

Sep 9, 2019

New high-mass gamma-ray binary discovered

Posted by in categories: energy, space

An international team of astronomers has detected a new high-mass gamma-ray binary (HMGB) in the Milky Way galaxy. The newly found HMGB, designated 4FGL J1405.1–6119, is one of only a handful of such objects discovered to date. The discovery was announced in a paper published August 28 on the arXiv pre-print repository.

HMGBs consist of an OB star in orbit with a compact object. In these systems, interactions between the two objects result in an emission with spectral energy distribution (SED) peaks above 1.0 MeV. They are assumed to be precursors to high-mass X-ray binaries (HMXBs).

HMGBs are very rare objects. Astronomers estimate that there are about 100 still undetected HMGBs residing in our home galaxy. Moreover, many known sources of as-yet unknown nature, could potentially be high-mass gamma-ray binaries.

Sep 7, 2019

Tesla patents new battery cell for faster charge, better longevity, and lower cost

Posted by in categories: chemistry, energy, sustainability

Tesla’s battery research group led by Jeff Dahn in Halifax has applied for a patent that describes a new battery cell chemistry that would result in faster charging and discharging, better longevity, and even lower cost.

Jeff Dahn is considered a pioneer in Li-ion battery cells. He has been working on the Li-ion batteries pretty much since they were invented. He is credited for helping increase the life cycle of the cells, which helped their commercialization. His work now focuses mainly on a potential increase in energy density and durability.

Continue reading “Tesla patents new battery cell for faster charge, better longevity, and lower cost” »

Sep 7, 2019

SECURITY: Report reveals play-by-play of first U.S. grid cyberattack — Friday, September 6, 2019 -.net

Posted by in categories: cybercrime/malcode, energy

A first-of-its-kind cyberattack on the U.S. grid created blind spots at a grid control center and several small power generation sites in the western United States, according to a document posted yesterday from the North American Electric Reliability Corp.

The unprecedented cyber disruption this spring did not cause any blackouts, and none of the signal outages at the “low-impact” control center lasted for longer than five minutes, NERC said in the “Lesson Learned” document posted to the grid regulator’s website.

But the March 5 event was significant enough to spur the victim utility to report it to the Department of Energy, marking the first disruptive “cyber event” on record for the U.S. power grid (Energywire, April 30).

Sep 6, 2019

AKASOL introducing new high energy battery system

Posted by in category: energy

At the Battery Show North America 2019, AKASOL will present a wide portfolio of new solutions to the battery community. The company’s flagship product is the new high-energy lithium-ion battery AKASystemAKM CYC, which has entered serial development for the battery module and system.

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The AKAModule CYC achieves energy density of 221 Wh/kg with liquid-cooled battery modules that are scalable and can be integrated in various system designs at the pack level.

Sep 4, 2019

[PDF] The Gravitational Aether, Part II: Gravitational Aetherometry

Posted by in categories: energy, quantum physics

The present essay is the third of a group of four communications originally intended for publication in Infinite Energy at Dr. Eugene Mallove’s invitation, and dedicated to the scientific, technological and political problems presented by exotic flight and lift systems in particular those relating to possible control of gravity. We examine the main lines of research into the nature of gravity over the past 6 decades, with a focus on Einstein’s General Relativity and General Theory of Gravitation, quantum-mechanical models of the graviton, Geometrodynamics and the ZPE theories, Van Flandern’s model of gravity, which are contrasted to Aspden’s theory of a dynamic Aetherometric Theory of Synchronicity, Vol. II AS3-II.9.

Sep 4, 2019

Nikola Tesla On Antigravity Technology, Flying Saucers Powered By Tesla Coils And The Ether

Posted by in categories: energy, physics

In the mid-1800’s to the early 1900’s Tesla file for more than 110 patents in varying technologies. From his magnifying transmitter, than uses an air coil or vortex to generate massive voltages, to wireless transmissions of power which Tesla used to prove transmission of data, power, and even lighting a layer of the strata as early as 1900. For this reason many consider Nikola Tesla to be one of the most brilliant scientists the world have ever seen.

Tesla’s dynamic theory of gravity explains the relation between gravity and electromagnetics in the same field. This was due to the presence of aether, also known as ether, which is a space-filling medium that is necessary for the propagation of forces either through electromagnetic or gravitational in nature. In plain English, Aether is the medium necessary for any exchange on these levels. Also, Aether was removed from theory in modern physics and was replaced with more abstract models. In looking at Tesla’s ideas and results; it appears that modern physics is wrong.

In the late 1800’s Tesla presented his Dynamic Theory of Gravity, which was a model over matter, Aether, and energy. Tesla’s version of this medium is closer to the gas theory and has extreme elasticity and a very high permeability. He also felt that Aether was much more common and filled all of the space.

Sep 4, 2019

WTF is Zero Point Energy and How Could it Change the World?

Posted by in categories: energy, quantum physics

A strange concept of quantum physics could be an extraordinary boon to a ton of different near-undefined.

Sep 4, 2019

(PDF) Nikola Tesla’s Free Electricity Electronic Circuit

Posted by in category: energy

Nikola Tesla was an inventor who is best known for his contributions for the design for generating alternating current, Electricity supply system etc. He obtained around three hundred patents worldwide for his inventions and some are hidden in patent archives. One of the…

Sep 3, 2019

Mr. Osinakachi Akuma Kalu — Founder and Chairman of Transdiciplinary Agora for Future Discussions — ideaXme — Ira Pastor

Posted by in categories: 3D printing, aging, bioengineering, biotech/medical, business, cryptocurrencies, disruptive technology, energy, finance, food