Smart Toys without battery on the way to hit commercial

 Every children at their childhood are likely to be in contact with electronic devices.

Keeping these devices blinking and beeping is tedious, often requiring frequent charging or battery changes.

Researchers have explored alternative ways to produce and store energy for these devices without using batteries. One promising approach involves the use of triboelectric nanogenerators, or TENGs.

Scientists report they have used specialized nanogenerators that gather energy from mechanical vibrations to transform squeaky bathtub companions and other conventional children’s toys into ‘smart’ electronics.

 They say the finding could have broad commercial applications, leading to the development of battery-free, self-powered toys, medical sensors and other devices.

TENGs gather electrical charges from friction, similar to the static that builds up on a balloon when it is rubbed against someone’s head.

 TENGs amplify and convert this biomechanical energy into a usable form. However, ramping up these devices for commercial applications has been challenging, possibly because of low energy storage and conversion efficiencies.

Researchers sought to more effectively harness the energy from TENGs and use it to transform traditional toys into commercially viable, self-powered ‘smart’ toys. They  made with aluminum electrodes and an eco-friendly silicone-like film between them — into rubber ducks and clapping toys.

Squeezing or shaking the toys alternatively separated and brought the electrodes into contact with film, creating an electrical charge.

Once activated, the TENGs harvested enough biomechanical energy to illuminate several LED lights attached to each toy.

The researchers conclude their unique approach can transform traditional toys into battery-free interactive ones, and raises the prospect of successfully using TENGs commercially in other “smart” gadgets including medical devices and wearable electronics.

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