Abstract
This study unveils an optically-driven platform upon which the manipulation of carbon nanotubes (CNTs) can be accomplished. A photoconductive layer generates a non-uniform electric field at specific optically illuminated sites, which are usually referred to as “virtual electrodes, ” that induces dielectrophoretic forces for manipulating the CNTs. The software-controlled light patterns enable a flexible platform since it is now possible to dynamically reconfigure the optically-projected electrode pattern. This approach allows for the real-time manipulation and patterning of CNTs. The sorting and separation of bundled and dispersed CNTs is also demonstrated. This developed platform may be promising for the rapid fabrication of CNT-based nano-sensors, purification of synthesized CNTs and other applications requiring nano-scale manipulation.