The first completely bent electronic device

The Korean engineers created flexible batteries and on their basis assembled the first completely bent electronic device. The device represents lithium - the ion battery with the inorganic electrodes put on a flexible substrate. At its manufacturing electrodes at first form on mica, and then transfer on plastic - полидиметилсульфоксан. Thus, the method of transfer is undemanding to a material of which electrodes are made.
The battery created by the Korean scientists is capable to be bent with radius about 3 millimeters, without changing tension of a developed electricity. In the course of test of the device it was bent by more than 20 thousand times, but it practically in any way didn't change indications of the voltmeter connected to the battery.
As experiment researchers connected the flexible light-emitting diode display to the battery and assembled, thus, the first completely bent electronic device in the world.
Lithium - ion batteries are considered long ago by engineers as good candidates for manufacturing of flexible supply equipments. Difficulties which arise at their manufacturing, are connected first of all with electrodes which should keep good contact to electrolit at bends. For this purpose scientists try to use or flexible organic conductors, or tonkosloyny inorganic conductors. Shortcomings of the first are connected with the low stability, the second - with difficulty of transfer on a flexible substrate.