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Amazing new technology powers wearable devices with our own sweat.

A team of engineers from the University of California, San Diego has developed remarkable stretchable power cells that take energy from your own sweat and power electronics, like LEDs and even Bluetooth radios! New technology powers devices with sweat
For a field that has been struggling to come up with devices that are powerful enough and stretchable enough, these epidermal biofuel cells are a major breakthrough. The breakthrough was achieved thanks to a combination of extremely clever chemistry, highly advanced materials and electronic interfaces. This combination let them build a highly stretchable, electronic foundation using lithography and screen-printing to manufacture 3D carbon nanotube-based cathode and anode arrays.
The biofuel cells are equipped with an enzyme that oxidizes the lactic acid present in human sweat to generate current. This turns the sweat into a source of power. Because the concentration of lactic acid in a person's sweat gets diluted over time, the team is exploring a way to store the energy produced while the concentration of lactate is high enough and then release it gradually.So future work is needed before this technology can be considered a full success. 

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Latest Tips

Is aluminum wire a fire hazard and what should I do about it?

Monday, March 11, 2019

From the mid-'60s to the early '70s, electricians in many new or remodeled homes installed aluminum wiring to feed branch circuits from the main panel to outlets and lighting fixtures.  What was later discovered is that while continuous runs of aluminum wire didn't present problems, when those wires were connected to light switches, outlets and other wires in junction boxes, the connections deteriorated and became fire hazards.

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Electrical Spring cleaning the right way.

Wednesday, February 27, 2019

Spring cleaning time is just about here!  And while you're all set to clean the inside of your home to welcome in the new, warmer season, don’t forget to add “electrical safety” to your annual checklist.

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About John's Electric

Linn Park Fountain, Birmingham, AL

John's Electric Inc. is a family owned and operated electrical contractor business that proudly provides electrician services in Birmingham, AL and the surrounding areas such as Hoover, Homewood, Chelsea, Vestavia Hills, Pelham, Alabaster, Trussville, and Mountain Brook. John's Electric provides residential and commercial electrical solutions at competitive rates. We have been in this line of work for 30 years, giving us not only experience but expertise as well. You can depend on us. We are a state licensed electrician (#03875) for your protection.

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What others say about John's Electric Service

Aubrey was very helpful, explaining things as he went and making sure that everything worked good before he left.

Lisa H.
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John's Electric did a very thorough,quick and thrifty job! I would absolutely recommend them for your electrical work! Bravo!

VJ Sazera
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Fixed our outside meter box. Less than 2 hours work.

They did wonderful. Alabama Power was a little hard to deal with, but they arranged everything. Pretty good communication. I thought they were a little pricey, even with the coupon. They made the repairs and the power was back on in less than two hours.

Angie's List Member
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This company did an incredible job on our house. Had a few issues to get home ready for sale and he came next day - completed everything with perfection and great price. Aubrey is very honest and trustworthy! Will use him any other time I need electric work and strongly recommend him

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