A problem with wearable devices is providing a suitable battery. Even in something as big as a watch, incorporating a battery adds considerable bulk. Check the size of most smart watches. A large number of applications are waiting on the availability of smaller batteries. E.g. smart clothing, smart labels & medical devices. Imprint Energy, of Alameda, California believes this need can be filled by its battery, which uses zinc, rather than lithium, & can be printed inexpensively using industrial screen printers.
http://www.technologyreview.com/news/528996/flexible-printed-batteries-for-wearable-devices/ / California startup development develop developing flexible rechargeable batteries battery printed cheaply commonly used industrial screen printers Imprint Energy Alameda California test testing ultrathin zinc-polymer zinc polymer batteries wrist worn wear wearable wrist-worn devices sell manufacturers wearable electronics medical devices smart labels environmental sensors safe for on-body applications small size flexibility product designs impossible with bulkier lithium-based batteries small formats deliver enough current low power low-power wireless communications sensors $6 million funding Phoenix Venture Partners AME Cloud Ventures VC venture capital venture fund Yahoo co-founder cofounder Jerry Yang proprietary chemistry finance batteries’ commercial launch previous investors CIA-backed venture firm In-Q-Tel Dow Chemical research company co-founder Christine Ho graduate student University of California Berkeley collaborate collaborated researcher Japan produce microscopic zinc batteries 3D 3-D printer batteries power laptop smartphone smart phone smart-phone lithium highly reactive protected add size bulk more stable water-based electrolytesform dendrites branch like structures clothes body eye sensors monitor health status /
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