The controlled, continuous directed rotational motion of microscale objects can be achieved using spatially defined catalytic regions. SiO 2 of 0.25μm was grown on n+ Si wafer and a seed metal layer consisting of 25 nm of chromium and 75 nm of gold was evaporated onto the oxide surface. A shipley 1827 positive photoresist was spun on the surface at 4000 rpm for 40 s, soft baked for 90 s at 110°C, was exposed through a mask for 3.5 s using a mercury lamp uv source calibrated to an exposure output of 12mWcm -2 on a Karl Suss MA-6 optical contact aligner. At the molecular scale, natural biological systems implement biomolecular motors, which acts as delivery vehicles and perform a wide variety of inter cellular functions. It was found that these motors are driven chemically through the catalytic hydrolysis of ATP, a chemical fuel present in the intercellular solution suspending these continuously operating motors.
All Science Journal Classification (ASJC) codes
- Materials Science(all)