University of Cambridge – Page 2

Compliant Force Amplifier Mechanisms for Surface Micromachined Resonant Accelerometers

Pedersen C.B.W., Seshia A.A., University of Cambridge, UK

The present work deals with the optimization of a compliant force amplifier mechanism in a surface micromachined resonant accelerometer. Figures of merit including noise floor and scale factor are critically dependent on the gain of [...]

Modelling and Fabrication of Microspring Thermal Actuator

Luo J.K., Flewitt A.J., Spearing M., Fleck N.A., Milne W.I., University of Cambridge, UK

A new spring type microelectrothermal actuator with greatly enhanced displacement is proposed. Instead of using a single long chevron actuator, several chevrons are folded into a number of sections to become a spring-like actuator. Insulating [...]

Computational Modelling and Structural Studies of Perfluoro Sulfonate Ionomer Membranes

Elliott J.A., University of Cambridge, UK

Perfluoro sulfonate ionomer membranes (PIMs) consist of a Teflon (PTFE) backbone with sulfonic acid groups periodically substituted along the chain, and are of great commercial interest due to their peculiar ion transport properties. In particular, [...]

Atomistic Modelling of Radiation Damage in Zircon

Trachenko K., Dove M.T., Salje E.K.H., University of Cambridge, UK

We report the results of simulation of radiation damage in zircon structure using molecular dynamics technique. We detect, quantify and visualise the phases of damage production process, including ballistic and thermal spike phase. The simulation [...]

Simulation of Two-level Tunneling States and Floppy Modes in Silica Glass

Trachenko K., Dove M.T., Heine V., University of Cambridge, UK

We present the results of a computational study of the low-energy dynamics of silica glass. Molecular dynamics simulation results show that parts of the glass structure can undergo large cooperative reorientations of SiO4 tetrahedra. These [...]