This conceptual illustration of a computer based on 2D molecules displays an actual scanning electron microscope image of the computer fabricated by a team by researchers at Penn State. The keyboard features highlighted keys labeled with the abbreviations for molybdenum disulfide and tungsten diselenide, representing the two 2D materials used to develop the transistors in the computer.  Credit: Krishnendu Mukhopadhyay/Penn State. All Rights Reserved.UNIVERSITY PARK, Pa. — Silicon is king in the ...