Abstract: The present invention provides an intelligent virtual display device including a contact lens. The contact lens has a central area thereon, a micro display disposed outside the central area, a wearable reflector disposed corresponding to the micro display and configured to receive and to reflect images of the micro display, and a controller. The controller is connected with the micro display and configured to send the control signals to the micro display so as to generate the images. The contact lens is designed for being worn on a user's eyeball. When the eyeball rotates, the micro display changes its projection direction simultaneously to match the user's visual angle.

Abstract: Patterning and direct writing of nanoparticle inks formulated to provide conductive lines upon annealing. Patterning methods include stamp and tip based methods including microcontact printing and DPN printing. Ink viscosity, metal content, and density can be controlled to provide good results. Low temperature of annealing can be used to generate volume resistivities comparable to bulk resistivity. Long lines can be drawn. Addressable patterning can be achieved.