The electronic textiles produced by this method retain the flexibility and stretchability of regular cotton and polyester. They also kept their electronic properties despite simulated repeated laundering, say the researchers. The next step is to combine it with inks of other materials that could help turn the fabric into wearable solar cells and batteries. The researchers are also looking to use graphene, a form of carbon derived from graphite oxide, instead of carbon nanotubes. "Graphene can be much cheaper than nanotubes," says Hu, "so alternative materials like that could significantly reduce the cost of energy textiles."

a bit tricky on the touchscreen though