{"79921":{"#nid":"79921","#data":{"type":"news","title":"Georgia Tech Microgenerator Can Power Electronics","body":[{"value":"\u003Cp\u003EIt may be tiny, but a new microgenerator developed at Georgia Tech can now produce enough power to run a small electronic device, like a cell phone, and may soon be able to power a laptop.\u003C\/p\u003E\n\u003Cp\u003EThe microgenerator is about 10 millimeters wide, or about the size of a dime. When coupled with a similarly sized gas-fueled microturbine (or jet) engine, the system, called a microengine, has the potential to deliver more energy and last 10 times longer than a conventional battery.\n\u003C\/p\u003E\n\u003Cp\u003EDeveloped by doctoral candidate David Arnold, postdoctoral fellows Dr. Iulica Zana and Dr. Jin-Woo Park, and Professor Mark Allen, in the School of Electrical and Computer Engineering at Georgia Tech, the microgenerator produces useful amounts of electricity by spinning a small magnet above a mesh of coils fabricated on a chip. The microelectromechanical system (MEMS) was developed in close collaboration with Sauparna Das and Dr. Jeffrey Lang in the Department of Electrical Engineering and Computer Science at the Massachusetts Institute of Technology (MIT).\n\u003C\/p\u003E\n\u003Cp\u003EWhile work has been underway for several years on various microengine concepts, Georgia Tech\u0027s generator has now demonstrated the ability to produce the wattage necessary to power an electronic device, Arnold said.\n\u003C\/p\u003E\n\u003Cp\u003E\u0022We can now get macro-scale power from a micro-scale device,\u0022 Arnold added.\n\u003C\/p\u003E\n\u003Cp\u003EThis advancement is a key step in microengines someday being incorporated into products and possibly replacing conventional batteries in certain electronics.\n\u003C\/p\u003E\n\u003Cp\u003E\u0022This is an important step in the development of MEMS-based micro-power systems,\u0022 Allen said.\n\u003C\/p\u003E\n\u003Cp\u003EThe device\u0027s magnet spins at 100,000 revolutions per minute (rpm), much faster than the comparatively sluggish 3,000 rpm of an average car engine. Speed like that is capable of producing 1.1 watts of power, or enough juice to run a cell phone.\n\u003C\/p\u003E\n\u003Cp\u003EIf the project reaches its projected goal, it will eventually produce as much as 20 to 50 watts, capable of powering a laptop.\n\u003C\/p\u003E\n\u003Cp\u003EThe research is part of a larger project funded by the Army Research Laboratory to create lighter portable power sources to replace the heavy batteries that currently power a soldier\u0027s equipment, such as laptops, radios, and GPS systems. Researchers at the University of Maryland and Clark Atlanta University also collaborate on the project.\u003C\/p\u003E\n\u003Cp\u003EOne of the team\u0027s key problems was figuring out how to spin the magnet fast enough to get useful amounts of power, while keeping the magnet from breaking apart. High-performance magnets are brittle and easily broken up by the centrifugal force created by high speeds. To overcome this problem, the researchers have optimized the magnet dimensions and encased it in a titanium alloy to increase its strength.\n\u003C\/p\u003E\n\u003Cp\u003EIn the lab, the team used an air-powered drill - similar to what a dentist would use - that simulates the spinning of the magnet by the micro gas turbine (still under development at MIT). Now that initial tests have been successful, they hope to increase the speeds to what would be used in an actual microengine to squeeze out more power.\n\u003C\/p\u003E\n\u003Cp\u003EThe Georgia Tech\/MIT team will present their progress with the project at the International Conference on Micro Electro Mechanical Systems (MEMS) in January.\u003C\/p\u003E","summary":null,"format":"limited_html"}],"field_subtitle":[{"value":"New microengines could provide 10 times longer life than batteries for cell phones, laptops"}],"field_summary":[{"value":"A new microgenerator developed at Georgia Tech can now produce enough power to run a small electronic device, like a cell phone, and may soon be able to power a laptop. When coupled with a similarly sized gas-fueled microturbine (or jet) engine, the system, called a microengine, has the potential to deliver more energy and last 10 times longer than a conventional battery.","format":"limited_html"}],"field_summary_sentence":[{"value":"Microengines last 10 times longer than batteries"}],"uid":"27281","created_gmt":"2004-11-23 01:00:00","changed_gmt":"2016-10-08 03:01:05","author":"Lisa Grovenstein","boilerplate_text":"","field_publication":"","field_article_url":"","dateline":{"date":"2004-11-23T00:00:00-05:00","iso_date":"2004-11-23T00:00:00-05:00","tz":"America\/New_York"},"extras":[],"hg_media":{"79931":{"id":"79931","type":"image","title":"David Arnold, Dr. Iulica Zana and Dr. Jin-Woo Park","body":null,"created":"1449178071","gmt_created":"2015-12-03 21:27:51","changed":"1475894693","gmt_changed":"2016-10-08 02:44:53"},"79941":{"id":"79941","type":"image","title":"Georgia Tech microgenerator","body":null,"created":"1449178071","gmt_created":"2015-12-03 21:27:51","changed":"1475894693","gmt_changed":"2016-10-08 02:44:53"}},"media_ids":["79931","79941"],"groups":[{"id":"1214","name":"News Room"}],"categories":[],"keywords":[],"core_research_areas":[],"news_room_topics":[],"event_categories":[],"invited_audience":[],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[{"value":"\u003Cstrong\u003ELisa Grovenstein\u003C\/strong\u003E\u003Cbr \/\u003ECommunications \u0026amp; Marketing\u003Cbr \/\u003E\u003Ca href=\u0022http:\/\/www.gatech.edu\/contact\/index.html?id=lgrovenste3\u0022\u003EContact Lisa Grovenstein\u003C\/a\u003E\u003Cbr \/\u003E\u003Cstrong\u003E404-894-8835\u003C\/strong\u003E","format":"limited_html"}],"email":["lisa.grovenstein@comm.gatech.edu"],"slides":[],"orientation":[],"userdata":""}}}