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Researchers have developed a metallic tab which, when connected to a human body, is capable of generating electricity from bending a finger and other simple movements. According to a research project led by the University at Buffalo, New York, and Institute of Semiconductors (IoP) at the Chinese Academy of Science (CAS), the tab -- a triboelectric nanogenerator -- can convert mechanical energy into electrical energy for electronic devices. "The human body is an abundant source of energy. We thought: 'Why not harness it to produce our own power?'" said lead author Qiaoqiang Gan, associate professor at the University at Buffalo.