Metallic planar electrodes are bridged using microspheres coated with chemisorbed azobenzene self-assembled monolayers. The circuit exhibits light-induced switching, with reproducibility over 90, as statistically determined and compared to junctions incorporating photo-insensitive alkanethiol layers. Microsphere interconnects provide direct access to molecular transport properties, with reliability and stability, making multifunctional molecular electronics devices possible.
Bibliographical noteFunding Information:
This work was supported by the ITN-SUPERIOR (PITN-GA-2009-238177), FP7 ONE-P large-scale project no. 212311, the NanoSci-E+ projects INTERNET and SENSORS, and the International Center for Frontier Research in Chemistry (FRC). Financial supports by the Swiss National Science Foundation (SNF) and the Swiss Nanoscience Institute (SNI) are also gratefully acknowledged.