Anisotropic nanocrystals with large aspect ratio stimulate widespread interests and research activities in both academies and industries. These nanostructures are ideal systems to study dimensionality dependence on optical, electrical, magnetic and mechanical properties, and they are expected to play important roles for the fabrication of nanoscale electronic and optoelectronic devices (lasers, photodetectors, chemical and biological sensors, energy conversion devices for photovoltaic and thermoelectric, ...).

Today, controlled and reliable nanoporous polymer templates supported on top of single crystalline substrates are produced from it4ip knowhow; combined with a solution chemistry methodology, these track-etched templates are suitable for the low cost synthesis of nanostructured system finely shape and size controlled through growth parameters (temperature and time) and template properties.

Because of the confined nucleation in high aspect ratio nanopores and of the high temperatures attained, new structures with novel properties are obtained; MnO2 and LaSr-doped single crystalline nanowires with potential use as molecular sieve and exhibiting ferromagnetic ordering with strongly enhance Curie temperature have been synthesized; this method can be now extended to other complex functional oxides to investigate new crystallographic phases and the modification of their physical properties.

Adrián Carretero-Genevrier, Jaume Gázquez, Juan Carlos Idrobo, Judith Oro, Jordi Arbiol, María Varela, Etienne Ferain, Juan Rodríguez-Carvajal, Teresa Puig, Narcís Mestres and Xavier Obradors, Single Crystalline La0.7Sr0.3MnO3 Molecular Sieve Nanowires with High Temperature Ferromagnetism, J. Am. Chem. Soc. 2011
Adrián Carretero-Genevrier, Jaume Gázquez, Teresa Puig, Narc?s Mestres, Felip Sandiumenge, Xavier Obradors and Etienne Ferain, Vertical (La,Sr)MnO3 Nanorods from Track-Etched Polymers Directly Buffering Substrates, Adv. Funct. Mater. 2010, 20, 892-897
Adrián Carretero-Genevrier1, Narcis Mestres, Teresa Puig, Awatef Hassini1, Judith Oró, Alberto Pomar, Felip Sandiumenge, Xavier Obradors and Etienne Ferain, Single-Crystalline La0.7Sr0.3MnO3 Nanowires by Polymer-Template-Directed Chemical Solution Synthesis, Adv. Funct. Mater. 2008, 20, 362-3677

http://pubs.acs.org/doi/abs/10.1021/ja1098963