This paper presents a novel concept of nanofuel, pure energetic nanoparticles or suspensions of energetic nanoparticles in a liquid carrier, as a potential secondary energy carrier. Technological issues for the realization of the concept including nanofuel production, controlled ignition and combustion, oxidized particle capture and other related issues are described and key challenges are identified, which calls for a cross disciplinary collaboration from materials, chemistry, physics and engineering researchers.
