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Category: energy

British and Czech scientists have unveiled a new “super laser” that they claim is the most powerful pulse laser available today.

The laser was developed by Britain’s Central Laser Facility (CLF) and Czech research and development project HiLASE (high average power pulsed laser). The 22-ton device has been dubbed Bijov after a mythical Czech strongman, and it cost $48 million to build.

Bijov has an average power output of 1,000 watts — a world record for pulse lasers. It first crossed this “magical barrier” on December 16, 2016, and HiLASE physicist Martin Divoky told AFP that it is “10 times as powerful” as any other laser of the same type.

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An answer to concerns about rejuvenation-induced overpopulation from a logistical point of view.

Why do we worry about overpopulation? What’s so bad about it? Well, several things. We could have too many people with respect to the space available on Earth; too many people and not enough jobs for everyone; too many people and not sufficient resources; too many people polluting the environment beyond what it can take.

All these potential problems need to be discussed. Thus, in this article I’m going to play accountant a little bit. You can read the whole article, or jump to the section that concerns you the most.

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OMG? Are we going to have super cheap electric vehicles in a few years that charge in a few seconds/minutes?

I hope so! This is very exciting.

Australia has supercapacitors made from graphene oxide. They can can store as much energy per kilogram as a lithium battery, but charges in minutes, or even seconds, and uses carbon instead of expensive lithium.

Large-scale production of the graphene that would be needed to produce these high-performance supercapacitors was once unachievable.

By using low-cost solution-based film synthesis techniques and a laser 3D printer, the researchers are able to produce graphene on a large scale at low cost.

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Nice.

Lawrence Livermore scientists have collaborated with an interdisciplinary team of researchers including colleagues from Sandia National Laboratories to develop an efficient hydrogen storage system that could be a boon for hydrogen powered vehicles.

Hydrogen is an excellent energy carrier, but the development of lightweight solid-state materials for compact, low-pressure storage is a huge challenge.

Complex metal hydrides are a promising class of materials, but their viability is usually limited by slow hydrogen uptake and release. Nanoconfinement—infiltrating the metal hydride within a matrix of another material such as carbon—can, in certain instances, help make this process faster by shortening diffusion pathways for hydrogen or by changing the thermodynamic stability of the material.

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Nice find on nanoparticles and energy transfer — important in scalable devices, energy conservation, etc.

The development, design and the performance evaluation of rare-earth doped host materials is important for further optical investigation and industrial applications. Herein, we successfully fabricate KLu2F7 upconversion nanoparticles (UCNPs) through hydrothermal synthesis by controlling the fluorine-to-lanthanide-ion molar ratio. The structural and morphological results show that the samples are orthorhombic-phase hexagonal-prisms UCNPs, with average side length of 80 nm and average thickness of 110 nm. The reaction time dependent crystal growth experiment suggests that the phase transformation is a thermo-dynamical process and the increasing F−/Ln3+ ratio favors the formation of the thermo-dynamical stable phase — orthorhombic KLu2F7 structure. The upconversion luminescence (UCL) spectra display that the orthorhombic KLu2F7:Yb/Er UCNPs present stronger UCL as much as 280-fold than their cubic counterparts. The UCNPS also display better UCL performance compared with the popular hexagonal-phase NaREF4 (RE = Y, Gd). Our mechanistic investigation, including Judd-Ofelt analysis and time decay behaviors, suggests that the lanthanide tetrad clusters structure at sublattice level accounts for the saturated luminescence and highly efficient UCL in KLu2F7:Yb/Er UCNPs. Our research demonstrates that the orthorhombic KLu2F7 is a promising host material for UCL and can find potential applications in lasing, photovoltaics and biolabeling techniques.

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Magnetohydrodynamics involves magnetic fields (magneto) and fluids (hydro) that conduct electricity and interact (dynamics). MHD technology is based on a fundamental law of electromagnetism: When a magnetic field and an electric current intersect in a liquid, their repulsive intersection propels the liquid in a direction perpendicular to both the field and the current.

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“Launched in 2007, the Fuller Challenge has defined an emerging field of practice: the whole systems approach to understanding and intervening in complex and interrelated crises for wide-scale social and environmental impact. The entry criteria have established a new framework through which to identify and measure effective, enduring solutions to global sustainability’s most entrenched challenges. The rigorous selection process has set a unique standard, gaining renown as “Socially-Responsible Design’s Highest Award.”

The Fuller Challenge attracts bold, visionary, tangible initiatives focused on a well-defined need of critical importance. Winning solutions are regionally specific yet globally applicable and present a truly comprehensive, anticipatory, integrated approach to solving the world’s complex problems.”

Deadline is March 31, 2017