| AVS 56th International Symposium & Exhibition | |
| Nanometer-scale Science and Technology | Wednesday Sessions |
| Session NS-WeM |
| Session: | Nanoscale Devices and Sensors and Welch Award |
| Presenter: | J. Biener, Lawrence Livermore National Laboratory |
| Authors: | J. Biener, Lawrence Livermore National Laboratory M.M. Biener, Lawrence Livermore National Laboratory A.V. Hamza, Lawrence Livermore National Laboratory A. Wittstock, Universität Bremen, Germany M. Bäumer, Universität Bremen, Germany D. Kramer, Forschungszentrum Karlsruhe, Germany R.N. Viswanath, Forschungszentrum Karlsruhe, Germany J. Weissmüller, Forschungszentrum Karlsruhe, Germany |
| Correspondent: | Click to Email |
Although surfaces or, more precisely, surface atoms determine the way how materials interact with their environment, the influence of surface chemistry on the bulk of the material is generally considered to be small. However, in the case of high surface area materials such as nanoporous gold the influence of surface properties can no longer be neglected. Therefore, actively controlling surface properties such as diffusion barriers and surface stress by surface chemistry should provide an opportunity to manipulate and fine-tune material properties. Specifically, we will show that surface chemistry is an important factor in determining the stability of nanostructured gold surfaces, and that macroscopic strain can be generated by surface-chemistry induced changes of the surface stress. The latter effect can be used to directly convert chemical energy into a mechanical response without generating heat or electricity first and thus opens the door to surface-chemistry driven actuator and sensor technologies.
Prepared by LLNL under Contract DE-AC52-07NA27344.