An android is a robot or synthetic organism designed to look and act like a human. Although "android" is used almost universally to refer to both sexes, and those of no particular sex, "Gynoid" is the feminine form. Until recently, androids have largely remained within the domain of science fiction, frequently seen in film and television.
The word was coined from the Greek root ανδρ- 'man' and the suffix -oid 'having the form or likeness of'.[3] The Oxford English Dictionary traces the earliest use (as "Androides") to Ephraim Chambers' Cyclopaedia, in reference to an automaton that St. Albertus Magnus allegedly created.[4] The word was popularized by the French writer Villiers in his 1886 novel L'Ève future. The term "android" appears in US patents as early as 1863 in reference to miniature human-like toy automatons.[5]
The term "droid", coined by George Lucas for the original Star Wars film and now used widely within science fiction, originated as an abridgment of "android", but has been used by Lucas and others to mean any robot, including distinctly non-humaniform machines like R2-D2. The abbreviation "andy", coined as a pejorative by writer Philip K. Dick in his novel Do Androids Dream of Electric Sheep?, has seen some further usage, such as within the TV series Total Recall 2070.
The Intelligent Robotics Lab, directed by Hiroshi Ishiguro at Osaka University, and Kokoro Co., Ltd. have demonstrated the Actroid at Expo 2005 in Aichi Prefecture, Japan. In 2006, Kokoro Co. developed a new DER 2 android. The height of the human body part of DER2 is 165 cm. There are 47 mobile points. DER2 can not only change its expression but also move its hands and feet and twist its body. The "air servosystem" which Kokoro Co. developed originally is used for the actuator. As a result of having an actuator controlled precisely with air pressure via a servosystem, the movement is very fluid and there is very little noise. DER2 realized a slimmer body than that of the...