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From June 29 through July 5, 2009 teams from around the world participated in the International RoboCup competition, held in Graz, Austria. In addition to humanoid robots playing soccer on turf fields, companion robots demonstrating their ability to help around the house, and rescue robots traversing complex terrain looking for simulated disaster victims, there were MEMS-scale robots competing on fields the size of a grain of rice.
Allen, R.
and McGray, C.
(2009),
MEMS in Action: RoboCup Nanogram 2009, MEMS Alliance Newsletter, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=903478
(Accessed October 17, 2025)