Nanocomposites have shown unique advantages in achieving properties that find tremendous potential applications in science and technology. Due to their diverse structures, nanocomposites exhibit a wide variety of tunable properties to realize the prominent and desirable performances in mechanical, electrical, thermal, optical, electrochemical, and catalytic fields. The properties of nanocomposite materials depend not only on the properties of the building components but also on their morphologies and interfacial characteristics. There is also the possibility of producing improved or multifunctionalities and/or new properties due to the coupling between the two components, which may not be found for each component at a pure state.

In this special issue, we particularly focus on the new synthetic approaches, novel structures, tunable properties, and promising applications of the nanocomposites. This special issue on nanocomposites will become an international forum for researchers to summarize the most recent developments in the field, with a special emphasis given to the nanocomposites' applications in energy. Potential topics include, but are not limited to:

• Synthesis and design of nanocomposite structures
• Fabrication of polymer-based nanocomposites
• Preparation of carbon nanotubes-based composites
• Interfacial effects in nanocomposites
• Multifunctionality in nanocomposites
• Superconductive properties tuned by nanocomposites
• Nanocomposites for light-emitting diodes
• Photovoltaic physics of nanocomposites
• Nanocomposites for applications in biomedical field

Before submission authors should carefully read over the journal's Author Guidelines, which are located at http://www.hindawi.com/journals/jnt/guidelines/. Prospective authors should submit an electronic copy of their complete manuscript through the journal Manuscript Tracking System at http://mts.hindawi.com/ according to the following timetable: