The QSR group at HP Labs is exploring the limits of the physically possible by focusing on the fabrication of nanometer-scale structures and the measurement and understanding of their properties. QSR's research into molecular-scale electronics is inspired by the realization that the fundamental limits to the power efficiency of computation, as described by Richard Feynman and others, lie as much as a factor of one billion beyond the presently known capabilities of silicon integrated circuits. QSR researchers span a broad range of academic disciplines, including computer architecture, theoretical solid state physics, electrical engineering, materials science, and physical chemistry.