Schematic drawing of a side view (A) of the device at the molecular level, showing the nanoparticle monolayers of gold (Au) and cadmium sulfide (CaS) and the dielectric barriers separating them. A third gold layer at the top of the device (coated with fle
Schematic drawing of side view of a penny being pressed onto the device. Image courtesy of Science.
Images of optical microscope and pressure images of the coin, showing the finer structure. Image courtesy of Science.
Ravi Saraf (left) and Vivek Maheshwari with a sample of the device. Photo courtesy of the UNL College of Engineering.