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roMechanical Systems (MEMS), ranging from nanometres through micrometers to millimetres. See also Smart dust. Core concept – Skin: fabrics based upon light emitting and conductive polymers, anic puter devices, can be formed into more flexible nonplanar display surfaces and products such as clothes and curtains, see OLED display. MEMS device can also be painted onto various surfaces so that a variety of physical world structures can act as worked surfaces of MEMS. – Clay: ensembles of MEMS can be formed into arbitrary three dimensional shapes as artefacts resembling many different kinds of physical object (see also Tangible interface). History ? Mark Weiser coined the phrase ubiquitous puting around 1988, during his tenure as Chief Technologist of the Xerox Palo Alto Research Center (PARC). Both alone and with PARC Director and Chief Scientist John Seely Brown, Weiser wrote some of the earliest papers on the subject, largely defining it and sketching out its major concerns.[5][6][7] History ? Recognizing that the extension of processing power into everyday scenarios would necessitate understandings of social, cultural and psychological phenomena beyond its proper ambit, Weiser was influenced by many fields outside puter science, including philosophy, phenomenology, anthropology, psychology, postModernism, sociology of science and feminist criticism. Histor