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 @cwru, Copyright © 2020 by the American Association for the Advancement of Science (AAAS), Resaerchers Find a Key to Electrostatic Charging, Institut national de la recherche scientifique - INRS. view more. Why does rubbing a balloon on your hair make it stick? Your email address is used only to let the recipient know who sent the email. provides eligible reporters with free access to embargoed and breaking news releases. informative activities is a commitment and tradition of Times NIE. Beyond earthly uses, Wang said, these applications and mitigation strategies might be more pertinent in the coming years as manned and unmanned space missions deal with moon, Mars and asteroid dust. After rubbing, unstrained films clearly tended to carry a negative charge and the strained film a positive charge. Scientists have found why rubbing two materials, such as a balloon on hair causes static electricity to charge the materials and makes it stick. The only detectable difference in the strained film from the unstrained film was the presence of voids in the material – holes and fractures created by stretching, which changed the microstructure. New research indicates how static electricity puts the charge in material, offering answer to centuries-old question The goal: to prevent damage and explosions or exploit the charging for beneficial uses, such as charged agricultural pesticides that stick better to plants, or paints for cars or even spray tans. Ahmedabad, Calcutta, Chennai, Nagpur and Jaipur. The researchers created molecular simulations of strained materials on a computer, which showed the birth of the voids but no other significant changes. global citizens. Perhaps as a kid you rubbed a balloon really fast against your hair to make it stick. The content is provided for information purposes only. Researchers used X-ray diffraction and Raman spectroscopy to analyze samples of strained and unstrained films and found at the atomic level, they looked nearly the same. Some holes and fractures were detected with the naked eye, while others were so small they required the aid of a scanning electron microscope. Beyond earthly uses, Wang said, these applications and mitigation strategies might be more pertinent in the coming years as manned and unmanned space missions deal with moon, Mars and asteroid dust. A newspaper that inspires Apart from any fair dealing for the purpose of private study or research, no I would like to subscribe to Science X Newsletter. This site uses cookies to assist with navigation, analyse your use of our services, and provide content from third parties. For centuries, scientists have tried to understand triboelectric charging, commonly known as static electricity. The only detectable difference in the strained film from the unstrained film was the presence of voids in the material—holes and fractures created by stretching, which changed the microstructure. “Triboelectric charging experiments are generally known for their inconsistent results,” said Andrew Wang, a PhD student at Case Western Reserve. In contrast, unstrained films rubbed together and strained films rubbed together appeared to charge at random. "Our idea was that a strain on the materials was causing a higher propensity for the materials to become charged," Lacks said. by contributing institutions or for the use of any information through the EurekAlert system. Copyright © 2020 The Indian Express [P] Ltd. 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