Propelling the electrons in silicene requires minimal energy input, which means reducing power and cooling requirements for electronic devices. f silicene could be used to build electronic devices,
so it can be integrated it into ultra-small renewable energy devices, such as solar cells, data storage hardware and advancing quantum computing. uow195685 o one in the scientific community believed silicene paper could be made
These challenges have now been met with a new technique developed by researchers at the Energy Biosciences Institute (EBI
and the BP energy company. ee combined chemical catalysis with life-cycle greenhouse gas modeling to create a new process for producing bio-based aviation fuel as well as automotive lubricant base oils,
a chemical engineer with joint appointments at Berkeley Lab and UC Berkeley. he recyclable catalysts we developed are capable of converting sugarcane biomass into a new class of aviation fuel and lubricants with superior cold
and lubricants from biomass optimized using life-cycle greenhouse gas assessment. Corinne Scown, a research scientist with Berkeley Lab Energy Analysis and Environmental impacts Division,
and Dean Toste, a chemist with joint appointments at Berkeley Lab and UC Berkeley, are the other two corresponding authors.
Biofuels synthesized from the sugars in plant biomass help mitigate climate change. However jet fuels have stringent requirements that must be met. et fuels must be oxygen-free,
because batteries and fuel cells simply aren practical. The process developed at EBI can be used to selectively upgrade alkyl methyl ketones derived from sugarcane biomass into trimer condensates with better than 95-percent yields.
These condensates are deoxygenated then hydro into a new class of cycloalkane compounds that contain a cyclohexane ring and a quaternary carbon atom.
sugar and electricity, says PNAS paper co-author Gokhale, a chemical engineer, who is managing the research project from BP side. xpanding the product slate to include aviation fuels
The rest of the waste biomass can be combusted to produce process heat and electricity to operate the refinery.
This new EBI process for making jet fuel and lubricants could also be used to make diesel
the strategy behind the process could also be applied to biomass from other non-food plants
and agricultural waste that are fermented by genetically engineered microbes. lthough there are some additional technical challenges associated with using sugars derived entirely from biomass feedstocks like Miscanthus
because these movements are driven not by energy from metabolic processes but solely by physical mechanisms. From a biological point of view, there no other way to achieve this.
as the latter would require significantly more energy. When the air or fluid pressure inside the cells was increased
#New nanogenerators collect friction energy from rolling tires Team of engineers from University of Wisconsin-Madison and a collaborator from China have developed a new nanogenerator that is able to generate power from friction created by rolling
In the future such technology could help harvest otherwise wasted energy to squeeze just that extra bit of efficiency out of cars and other vehicles.
The nanogenerator harvests the wasted tire friction energy by relying on the triboelectric effect. It is the electric charge that results from the contact or rubbing together of two dissimilar objects.
The generator harnesses energy from the changing electric potential between the pavement and a vehicle wheels.
Scientists said that it could become a very useful way to use the energy that is usually wasted due to friction taking advantage of this lost energy would improve efficiency,
which is a major goal in today automotive industry. Professor Xudong Wang, one of the authors of the study, noted that he friction between the tire
since that energy is wasted simply, f we can convert that energy, it could give us very good improvement in fuel efficiency Improving fuel efficiency would benefit everyone it would help automotive industry meet new strict regulations for emissions,
make traveling just that little bit cheaper and would improve energy efficiency which would benefit environmental causes as well.
The technology is depending on an electrode integrated into a segment of the tire. When it comes into contact with the ground,
the friction between those two surfaces ultimately produces an electrical charge-a type of contact electrification known as the triboelectric effect.
The friction was strong enough for the electrodes to harvest enough energy to power the lights,
which means that scientists confirmed the idea that wasted friction energy can be collected and reused.
Engineers also determined that the amount of energy harnessed is directly related to the weight of a car
It means that different vehicles would waste different amounts of energy and different percentage of it could be saved using this method.
However, scientists estimated that fuel efficiency could be improved by as much as 10%,given 50%friction energy conversion efficiency.
This is always largely about collecting wasted energy. That is why this technology has a huge potential
where they create clothing that kills bacteria, conducts electricity, wards off malaria, captures harmful gas and weaves transistors into shirts and dresses. otton is one of the most fascinating and misunderstood materials,
With ultrathin solar panels for trim and a USB charger tucked into the waist, the Southwest-inspired garment captured enough sunshine to charge cell phones
Made by Promethean Power systems, a company based in Pune, India, and Boston, the system keeps milk chilled with a thermal battery that stores energy and releases it,
as cooling power, over the course of a day. Like India, Bangladesh has outdated an power grid that supplies electricity sporadicallyften as little as a few hours per day.
Rural dairy farmers on the subcontinent bring their milk to village collection centers that typically rely on diesel generators, a costly, dirty way of providing electricity.
Two Americans, Sam White and Sorin Grama founded Promethean Power in 2007 to address a simple but widespread and pressing problem:
they were determined to craft a technology that relied on solar power noble attempt that ultimately failed because solar power,
like grid power in India and Bangladesh, is by its nature intermittent, and refrigerators need constant power.
Eventually they settled on a thermal energy storage system that uses a phase-change material to store energy in the form of ice.
When the grid is operating a portion of the material freezes, and the battery circulates that thermal energy into a heat exchanger to keep milk chilled over the course of the day.
The thermal battery can store up to 28 kilowatt-hours of energy. ee not delivering new forms of energy;
wee simply storing the intermittent power that they do get and parceling it out over time,
That a huge improvement in a country where more than 300 million people live without access to electricity
has pledged to bring reliable electricity to the full population by 2022 t
#Processors do grow on trees: your next phone could be made of wood Engineers hunting for a way to make electronics more sustainable have hit on a novel invention-a semiconductor chip made almost entirely out of wood.
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