News tagged with power density

Watches, LEDs powered by yarn battery

(Phys.org)—Researchers have fabricated rechargeable batteries by using highly conductive yarns that have a diameter and flexibility similar to that of a piece of cotton yarn. The new yarn battery can be woven into fabric ...

dateAug 25, 2017 in Nanophysics feature
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Nanogenerator's output triples previous record

(Phys.org)—Taking an important step forward for self-powered systems, researchers have built a nanogenerator with an ultrahigh output voltage of 209 V, which is 3.6 times higher than the previous record of 58 V. The nanogenerator, ...

dateJan 03, 2013 in Nanophysics feature
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Tiny heat engine may be world's smallest

(PhysOrg.com) -- Steam engines, combustion engines, and diesel engines are all different types of heat engines, which operate by converting heat energy into mechanical work. Although heat engines have existed for a long time, ...

dateFeb 02, 2011 in General Physics feature
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Tiny wires could provide a big energy boost

Wearable electronic devices for health and fitness monitoring are a rapidly growing area of consumer electronics; one of their biggest limitations is the capacity of their tiny batteries to deliver enough power to transmit ...

dateJul 07, 2015 in Nanomaterials
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