Band aid type generator typing and electricity that can be attached to the finger generates electricity: Innovative Tech

Innovative Tech:

In this corner, Hiroki Yamashita, who presides over the web media "SEAMLESS", introducing the latest research on technology.Mr. Yamashita picks up and explains a highly new nature paper.

　"A Passive Perspiration Biofulel Cell: HIGH ENERGY RETURN on Investment" developed by a research team at the University of California University, is a thin and flexible band -type device that produces a small amount of electricity when sweating or pushing.。Since it is mounted on the belly of the finger and generated power simply by pressing it lightly, it is easy to link with typing and other actions.It functions while the wearer is sleeping to generate electricity with a small amount of sweat.

　The fingertips of the human fingertips have more than 1000 sweat glands, and it is said that sweat is 100 to 1000 times compared to other parts, and unlike the side, many sweats generate even though they are well ventilated.。This is an attempt to propose this time to collect sweat before evaporating and convert it into electric energy.

　The device is thin and flexible as a band aid, and is pasted so that it is wrapped around the fingertips.The electrode mounted on the device absorbs sweat and converts it into electric energy.This electrode incorporates an enzyme that generates electricity by causing a chemical reaction between lactic acid and oxygen molecules contained in sweat.

　In addition, it is equipped with a piezoelectric element under the electrodes, and when this is pressed, it is a mechanism that generates more electric energy.Electrical energy generated by sweating and pushing movements in this way is stored in a small condenser and can be discharged to other devices as needed.

　Since power is generated simply by pressing the finger lightly, the operation of typing, e -mail, playing piano, and tapping the Morse signal is also an energy source.In a desk work experiment by the subject attached to the fingertips, the energy of about 30 millisures was collected by clicking one hour and mouse clicks.

　In another experiment, we were able to collect about 400 millisur energy for 10 hours of sleep.This is enough to drive the smartwatch 24 hours a day, which was obtained from a device attached to one finger tip.It is said that if the device is attached to the remaining fingertips, more than 10 times the energy will be obtained.

Source and Image Credits: Lu Yin, Jong-Min Moon, Juliane R.5, ISSUE 7, 2021, PP.1888-1904

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