Tech universe: Thursday, 24 June

A round-up of the latest technology news from around the globe.

ROBOT MOVES: 20 humanoid robots from Aldebaran Robotics danced in sync at the Shanghai World Expo. This week they play at Robocup, an annual robot soccer match. Robots are such team players. More at Wired, video on You Tube.

TV SOAPS: The polyvinyl-alcohol from old LCD screens can be used as pills, dressings or cleaning products to fight E.coli infections. TV keeps it clean at Gizmag.

NANO BATTERIES: Sick of charging up your phone every night? A carbon nanotube battery carries 10 times the power of lithium-ion batteries. Carbon makes us green. More at Discovery.

WI-FI CAMERAS: Toshiba's wireless SDHC card uses Wi-Fi to beam photos to another user's camera or to a server. Photos use the beam. Digital Photography Review has the pixel-packing details.

HEART WAVE: Japan's National Maritime Research Institute created a device that shapes water in a pool into hearts, stars, musical notes and a big 'splash'. Patterns in the stream. Crazy Japanese tech here.