Move over solar energy! Researchers
have developed a novel, inexpensive and simple method that can convert
footsteps into usable electricity. The method developed by researchers at
University of Wisconsin-Madison in the US puts to good use a common waste
material: wood pulp. The pulp, which is already a common component of flooring,
is partly made of cellulose nanofibres – tiny fibers that, when chemically
treated, produce an electrical charge when they come into contact with
untreated nanofibers. When the nanofibres are embedded within flooring, they
are able to produce electricity that can be harnessed to power lights or charge
batteries. Because weed pulp is a cheap, abundant and renewable waste product
of several industries, flooring that incorporated the new technology could be
as affordable as conventional materials. Existing materials for harnessing
footstep energy are costly, non recyclable and impractical.
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