A new dimension for batteries
(PHYSorg.com Chemistry)

Engineers at the University of Maryland have created a thin battery, made of a few million carefully constructed `microbatteries` in a square inch. Each microbattery is shaped like a very tall, round room, providing much surface area - like wall space - on which nano-thin battery layers are assembled. The thin layers together with large surface area produces very high power along with high energy. It is dubbed a `3-D battery` because each microbattery has a distinctly 3-D shape.