Research Projects

Many sensors produce the output electrical signal limited to transducing the initial physical signal into a mechanical displacement or deformation. This mechanical displacement in turn causes a change of either in capacitance or in resistance. Output electrical signals depends on input displacement which are quite small and need to be amplified, which is usually done using electronic amplifiers. Further, noise and other disturbance sources at the front-end of the electronic amplifier which affects measurement accuracy. Instead of amplifying electrical signal, if mechanical signal it is amplified at source effect of noise can be reduced drastically and use of high-resolution sensors can be avoided and ultimately cost of scanning system can decreased. Keeping this as view in proposed research project, it is planned that development of compliant amplification system as interface between motion stage and low-resolution sensor. Typically, amplification of the displacement is carried out using mechanical advantage and such multiple modules are to be assembled in series to achieve a motion amplification. This amplification module can be used for purpose of sensing low displacements and also can can be used for amplification of motion for actuators which has short range of the motion.

Flexural Mechanism, Motion Amplification, Sensors, Actuators, Nanopositioning