Carbon nanotube have an exceptional mechanical property which could be used in the prototype nano scale actuators in nano electro mechanical systems (NEMS). CNT being a good conductor of Electricity, Heat and having Structural strength make it a perfect material for very small nano actuators. Multi walled Carbon Nano Tube (MWNT) bimorph can be modeled, fabricated and characterized(i) . A computational study of the nano actuator is done in COMSOL Multiphysis(2) in the combination of Joule heating, Thermal Expansion and Structural Mechanics. The temperature increase and defiection were examined in COMSOL Multiphysics, which is commercial software of finite element allalysis.It was found that isothermal surface condition is neeessary for proper bending of single material (CNT)actuator.

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