Why the bot evolution must be human-led.
By Rob LoCascio.
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Nice new method in producing Q-Dots which seems to be more cost effective, efficient and reliable.
Large-scale technique to produce quantum dots.
Using the power of nano to solar power our homes at night.
MIT researchers have built a new experimental solar cell which could greatly enhance power efficiency. The “Shockley-Queisser’ limit is the estimated maximum efficiency of a solar cell, which is commonly about 32%; that means almost 70% of energy is wasted in the form of heat.
One way to reduce energy loss is by stacking cells. However if sunlight could be turned into heat and then be re-emitted as light, the solar cells could utilize more energy. Solar cells work best with visible light which occurs midway of the radiation spectrum. As a result the radiations with shorter and greater wavelengths usually go to waste.
The researchers at MIT have developed a structure of carbon nano-tubes that will function between the sun and solar cell. These carbon nano-tubes are very good absorbents of light (all types of radiation) and convert it to heat; heat is easier to store unlike light.
Non-diffracting Bessel vortex beams exhibit diverse propagation regimes in glass that can be observed with a novel imaging strategy.
High-power femtosecond pulses have become a key tool in processing of transparent materials (e.g., glass and sapphire) for the present and the next generation of consumer electronics.1 Associated major industrial challenges include high-quality and high-speed cutting of screen glass for smartphones, camera windows, or drilling of through-vias (vertical interconnect access) in interposers for the circuitry of 3D electronic chips. Ultrafast laser pulses (on picosecond or femtosecond timescales) allow for structuring transparent materials with high levels of accuracy. When the laser pulses propagate into the transparent dielectrics, they usually undergo high distortions.2 These distortions arise because of the nonlinear Kerr self-focusing effect and because of the interaction of the pulse with the plasma, which the pulses generate in the material. The propagation is therefore highly nonlinear and prevents uniform energy deposition along the beam propagation.
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3D Stem Cells — definitely makes sense given the organ, skin graffe, etc. produce on 3D printers in today’s labs.
JERUSALEM – Israeli 3D printer firm Nano Dimension has successfully lab-tested a 3D bioprinter for stem cells, paving the way for the potential printing of large tissues and organs, the company said on Wednesday.
While 3D printers are used already to create stem cells for research, Nano Dimension said the trial, conducted with Israeli biotech firm Accellta Ltd, showed its adapted printer could make large volumes of high resolution cells quickly.
“3D bioprinting enabled by the two companies’ technologies, means that Nano Dimension and Accellta have the potential to accelerate high fidelity and high viability manufacturing of living cellular products,” the companies said.
Treatment with sex hormones recovers serious genetic diseases cells, this is the first demonstration that the lengthening of telomeres is possible in humans with the use of a medication,” says the researcher.
Estudo demostrou que há como estimular a enzima telomerase por meio de hormônios sexuais, tanto masculinos quanto femininos.
Por Redação — Editorias: Ciências, Ciências Biológicas, Ciências da Saúde.
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Biodegradable Water Bottle
Posted in futurism
Interesting…
First, we take ‘Time’, as we know it’s one of those things that we take for granted—time moves forward and never backward. But did you ever stop to wonder why it moves in one direction, as opposed to the other?
The question continues to stump physicists. After all, there are certain physical processes that are actually time-reversible—they look the same no matter which way you run them.
For example, gravity operates the same way regardless of Time’s Arrow; a planet will orbit a star in exactly the same way, just with the direction of that orbit reversed. But there is one aspect of the universe that is dependent on the direction of Time’s Arrow: the Second Law of Thermodynamics. This states that the disorder of a closed system (such as our universe) must increase, never decrease.
It’s commonly called “entropy,” and it’s why broken eggs don’t suddenly reassemble themselves, or why dead things don’t suddenly come back to life. Disorganization and chaos are downhill, order and complexity are uphill; complex systems like stars and planets and human beings may emerge locally, but they require an inordinate amount of energy to create, which only increases the overall entropy of the system.
This is why the Second Law of Thermodynamics is universally reckoned as the mechanism that imparts directionality to time—although, understanding the how of a thing is not the same as understanding the why of it.
Now, we see the connection of Dark Energy,
In the question to understand the origins of Time’s Arrow, two Armenian physicists, A. E. Allahverdyan and V. G. Gurzadyan, decided to search for a link between so-called “dark energy” and the Second Law of Thermodynamics. Dark energy is a mysterious quantity that is proposed as an explanation for why the universe is continuing to expand, rather than decelerating and collapsing, as our current understanding of gravity dictates it should.
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