Our current research focus on behaviors and performance of materials:

Quantum Capacitance

Quantum Capacitance

Quantum capacitance is a fundamental quantity that can directly reveal many-body interactions among electrons and is expected to play a critical role in nanoelectronics. One of many tantalizing recent physical revelations about quantum capacitance is that it can posses a negative value, hence allowing for the possibility of enhancing the overall capacitance in some particular material systems beyond the scaling predicted by classical electrostatics. Using detailed quantum mechanical simulations, We use a small coaxially-gated carbon nanotube as a paradigmatical capacitor system and show that, for the range of mechanical strain considered, quantum capacitance can be adjusted. We elucidate the mechanisms underpinning the change of quantum capacitance due to strain.

Bio-Membranes

For Xiaobao2Bio-membranes are the most functional unit of any biological cell. They are made of thousands of lipid molecules and different kinds of interacting proteins. Some of the proteins are served as ion-gated channels and are responsible for the transportation of essential particles through the cell membrane. We are interested in the theoretical and computational physics and electro-mechanics of bio-membrane’s structure as well as the related biological mechanisms.

Soft Materials

Qian-topicWe study multidiscipline performance of soft materials, nonlinear electromechanical coupling in outer hair cell stereocilia, and nanomechanics of biological systems.