Academic journal article Science Scope

Harvesting Energy from Walking

Academic journal article Science Scope

Harvesting Energy from Walking

Article excerpt

At the Center for Research in Advanced Materials (CI-MAV), scientists decided to "capture" the energy produced by people walking. They designed a pill-shaped cylinder adapted to a shoe in order to store the mechanical-vibrational energy the person generates when walking. With the captured energy, they have been able to recharge clock and triple-A batteries.

Abel Hurtado-Macias, head of research and a specialist in materials science, says the pill is a device, which is piezoelectric, measures pressure, force, and acceleration and uses a circuit to convert mechanical energy into microwatts; once the device was connected to the batteries, it was tested with good results.

Piezoelectric is a term derived from pressure and electricity. When walking, mechanical force is generated from the pressure of the foot meeting the ground, which is then captured or harvested to generate the energy that is stored in the pill for further use.

Hurtado-Macias indicates that in the area of nano-structured materials, an important base of the research is to harvest or produce clean energy, and this prototype is ideal for that purpose. …

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