One potential clean energy future requires an economical, efficient, and relatively simple way to generate copious amounts of hydrogen for use in fuel-cells and hydrogen-powered vehicles. Often achieved by using electricity to split water molecules into hydrogen and oxygen, the ideal method would be to mine hydrogen from water using electricity generated directly from sunlight without the addition of any external power source. Hematite – the mineral form of iron – used in conjunction with silicon has shown some promise in this area, but low conversion efficiencies have slowed research. Now scientists have discovered a way to make great improvements, giving hope to using two of the most abundant elements on earth to efficiently produce hydrogen.
Speaking at the 2015 TED conference in Vancouver, Canada, MIT professor
Oxman has displayed what is claimed to be the world’s first 3D-printed
wearable prototype embedded with living matter. Dubbed "Mushtari," the
wearable is constructed from 58 meters (190 ft) of 3D-printed tubes
a mass that emulates the construction of the human gastrointestinal
tract. Filled with living bacteria designed to fluoresce and produce
bio-fuel when exposed to light, Mushtari is a vision of a possible
symbiotic human/microorganism relationships may help us explore other
London's ecoLogicStudio has demonstrated a full-scale prototype of its urban algae canopy at the "Feeding the Planet" expo in Milan. This "bio-digital" structure sees fluid filled with microalgae organisms pumped around an otherwise transparent shelter to produce dynamic shade, energy in the form of biomass, and an impressive amount of oxygen, while responding to the presence of visitors to produce interesting visual effects.
Scientists at the Lawrence Berkeley National Laboratory and the University of California, Berkeley have created a hybrid system of bacteria and semiconducting nanowires that mimics photosynthesis. According to the researchers, their versatile, high-yield system can take water, sunlight and carbon dioxide and turn them into the building blocks of biodegradable plastics, pharmaceutical drugs and even biofuel.
Researchers at the Australian National University are one step closer to creating an artificial photosynthesis system after replicating one of its crucial steps. The development may lead to an abundant source of hydrogen, a cheap and clean fuel that could replace all petroleum products.
As nocturnal creatures, moths need to maximize how well they can see in the dark whilst remaining less visible to avoid predators. This ability to collect as much of the available light as possible and at the same time reflect as little as possible, has inspired Researchers at the Swiss Federal Laboratories for Materials Science and Technology (Empa) to design a new type of photoelectrochemical cell using relatively low cost materials.
Rising atmospheric CO2
levels can generally be tackled in three ways: developing alternative energy sources with lower emissions; carbon capture and storage (CCS); and capturing carbon and repurposing it. Researchers at Princeton University are claiming to have developed a technique that ticks two of these three boxes by using solar power to convert CO2
into formic acid.
Artificially replicating the biological process of photosynthesis is a goal being sought on many fronts, and it promises to one day improve light-to-energy efficiencies of solar collection well beyond what's possible with photovoltaic cells. One of the first steps is to imitate the mechanisms at work in the transfer of energy from reception through to output. To this end, Scientists have recently experimented with a combination of biological and photonic quantum mechanical states to form new half-light half-matter particle, called the “polariton.” It could help realize fully synthetic systems by mimicking the energy transport systems of biological photosynthesis.
Researchers at Ruhr-Universitat Bochum have created a bio-based solar cell capable of generating a continuous electrical current of several nanowatts per sq cm. The new approach avoids damage to the tapped photosynthetic cells, an issue that has plagued previous attempts to harness nature's "power plant."
Millions of years of evolution has resulted in plants being the most efficient harvesters of solar energy on the planet. Much research is underway into ways to artificially mimic photosynthesis in devices like artificial leaves
, but researchers at the University of Georgia (UGA) are working on a different approach that gives new meaning to the term “power plant.” Their technology harvests energy generated through photosynthesis before the plants can make use of it, allowing the energy to instead be used to run low-powered electrical devices.