Tag: images

Power Bank phone

You couldn’t be further out of touch with your “iphone”. Uhe interesting developments aren’t going to happen in the places pundits obsess about.

1 thing that quickly became clear when I spoke to people is that the number 1 reason they bought the phone is to use it as a power bank. Ghana is currently experiencing a severe power crisis — city-wide blackouts of 36 hours or more have become the norm in the capital, and a brisk business has grown around selling power banks, which are small portable rechargeable batteries that can be used to charge small electronics such as MP3 players and, yes, phones.

Immune system cloaking

Researchers has come up with a way to reduce immune-system rejection of implantable devices used for drug delivery, tissue engineering, or sensing. Previous research found that smooth surfaces, especially spheres, are better — but counterintuitively, larger spheres actually work better at reducing scar tissue. “We realized that regardless of what the composition of the material is, this effect still persists, and that made it a lot more exciting because it’s a lot more generalizable”.

Microbatteries

A high-performance 3D microbattery that could be integrated into microchips at production volumes has been developed by researchers. Miniaturizing a battery to fit in a microchip is a major challenge, but it would be important for providing power to microscale devices such as actuators, distributed wireless sensors and transmitters, and portable and implantable medical devices.