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According to a report from the Physicist Organization Network on April 18th, the research team led by Laszlo Calman, an associate professor of physics at Concordia University in Canada, has found a way to take the timeliness of an energy-storage enzyme in nature. A few seconds extended to a few hours as a key to further capture and use of solar energy. Related research was published in the latest "American Chemical Society".
The researchers found a key enzyme that captures solar energy in bacteria. Under the induction of light, there will be charge separation inside, forming a state of negative charge at one end and positive charge at the other, just like a battery. By adding different molecules to change the shape of the enzyme, the researchers extended the time of their potential, allowing the enzyme to keep the state of charge separation longer.
In the natural structure, this enzyme can be completely embedded in the outer layer of cells, the so-called lipid membrane. The structure of the enzyme allows it to rapidly recombine charge and recover from the state of charge separation. However, in the experiment, the shape of the membrane composed of different lipid molecules and the built-in enzyme do not match, and thus the enzyme and the membrane will change shape to better match, thus making the enzyme recombination charge more difficult, This will allow the potential to last longer.
Kalman said: "We are doing something similar to placing cars on snow-covered streets. The surrounding environment prevents cars from running on the runway, just as different lipid-blocking enzymes perform charge-recombination under normal conditions. ."
He said that as one of the earliest energy conversion systems, photosynthesis has existed for several billion years and all our food, energy (gasoline or coal) are some of the old photosynthetic active products. The current research is to turn to these ancient natural ecosystems because the process is carbon-neutral and can use rich resources such as sunlight, carbon dioxide and water. Researchers are using nature's "batteries" to inspire more sustainable, man-made energy conversion systems.
In the future, these technologies can be applied to medical and biocompatible batteries. Batteries made of enzymes and other biomolecules can be used as in vivo monitoring devices for patients after surgery. Unlike conventional batteries, which contain toxic metals, biocompatible batteries can remain in the body without causing harm. (Hua Ling)
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