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30 March
CAN A CAR ABLE TO RUN BY WATER :GREAT INVENTION OF SCIENCE
28 March
The power of future :SOLAR PANELS and Solar energy
We all know that the fuels are not endless. Like coal, petroleum etc. They can able to give us electricity. But there are some problem :
1 : these fuels are not endless
2: they are costly and not recyclable
3: they are very harmful for the nature
SO we need a alternative source of energy. Among of other energies soler energy is best. Because the power of sun
Is endless.
SO we need soler energy.
Photovoltaic modules use light energy (photons ) from the Sun to generate electricity through the photovoltaic effects .The majority of modules use wafer -based crystalline silicone cells or thin film cells . The structural member of a module can either be the top layer or the back layer. Cells must also be protected from mechanical damage and moisture. Most modules are rigid, but semi-flexible ones based on thin-film cells are also available. The cells must be connected electrically in series, one to another.
Technology: Most solar modules are currently produced from crystalline silicon (c-Si) solar cells made
hydroelectric systems, as well as reducing carbon emissions by 6 billion tonnes per year. Due to decreasing costs and low CO2 emissions, volumes ofsolar panels will continue to grow in our core markets and around the world; contributing to an increasing proportion of future electrification.
NEW ARTIFICIAL LEAF DESIGN
New Artificial Leaf Design Could Absorb Far More CO2
We all know that trees are our best friends. They produce oxygen, foods, fuels and so many other things.
Lab-Bound Leaves
Plants are nature’s air purifiers. They take in carbon dioxide (CO2) and, through photosynthesis , create oxygen and energy.
According to UIC researcher s :
the problem with existing artificial leaves is that they draw pure CO2 from pressurized tanks in the lab, but in the real world, they need to be able to pull C02 from the air around them.
Pure and Simple
Moving artificial leaves out of the lab and into the air
Artificial leaves mimic photosynthesis — the process whereby plants use water and carbon dioxide from the air to produce carbohydrates using energy from the sun. But even state-of-the-art artificial leaves, which hold promise in reducing carbon dioxide from the atmosphere, only work in the laboratory because they use pure, pressurized carbon dioxide from tanks.
EFFICIENCY OF ARTIFICIAL LEAF
According to their calculations, 360 leaves, each 1.7 meters long and 0.2 meters wide, would produce close to a half-ton of carbon monoxide per day that could be used as the basis for synthetic fuels. Three hundred and sixty of these artificial leaves covering a 500-meter square area would be able to reduce carbon dioxide levels by 10 percent in the surrounding air within 100 meters of the array in one day.
ARTIFICIAL LEAF DESIGN INDIA
Indian Institute of Science, Bengaluru, have developed an artificial leaf that successfully achieves artificial photosynthesis. And what’s more, their process claims to be 100 times more efficient than natural photosynthesis.
The artificial leaf can absorb carbon dioxide from the atmosphere to generate fuel and release oxygen in the process, simulating the process of photosynthesis.
IISc’s Solid State Structural Chemistry Unit researchers in the study titled ‘The Quantum Leaf for Artificial Photosynthesis’ have designed and prepared CuAlS2/ZnS quantum dots (QDs) composed of biocompatible, earth-abundant elements, which can reduce salts of carbon dioxide under visible light into oxygen.















