A Nanomechanics Accelerometer Based On Atomic Point Contact

With the development of micro and nano technology,accelerometer based on nanomechanical oscillator has been achieved recently.As it has the advantages such as small size,high precision and low price,it has been widely used in consumer electronics,automobile,aircraft and other industrial fields.We have designed a single molecule accelerometer,which couples with a single molecule together.We connect it to a appropriate circuit and a magnetic field.Under the action of driving force,the mechanical oscillator will cut magnetic lines and produce inductive electromotive force.By sensing the electrical signals,we can measure the acceleration.It not only further reduces the size,but also has the advantage of high scale factor.It has an important value for developing a new kind of accelerometer based on nanomechanical oscillator.At the same time,it also has potential applications in the field of inertial navigation and flight control system.This thesis contains four parts.In chapter 1?we describe the common accelerometers and their performances.In chapter 2.we introduce the progress of single molecule devices by the international research groups.In chapter 3.we put forward the theoretical model of single molecule accelerometer.The final part is summary and scope.