Abstract
The present era of nanotechnology has reached to a stage where scientist are able to develop and programme complex machines that are built at molecular level which can work inside the patient body. One such challenge is a nanorobot, which once thought to be a desire as came into reality now. The proposed application of nanorobot can range from common cold to dreadful diseases like cancer, Diabetes, influenza, cerebral aneurysm. This study of nanorobot serves as a lead to the field of nanomedicine. There are many applications for nanorobotic systems and its biggest impact would be in the area of medicine. This article deals with the nanorobotic design and their applications in molecular diagnosis.