Image: Self-assembled bimodal superlattice of nanocrystals, close-up of lattice structure and
Caption: Foreground image: Sketch of a self-assembled bimodal superlattice of nanocrystals. The superlattice is composed of superparamagnetic iron oxide nanocrystals (blue) in a cubic array, with an icosohedron of 13 semiconducting lead selenide crystals (red) at the center of each cube. (The thirteenth lead selenide nanocrystal is at the center of the icosohedron.)
Background Image: This electron microscopy image has been colorized to highlight the positions of the magentic iron oxide particles (blue) and the semiconducting lead selenide quantum dots (red).
Credit (Foreground Image): Franz Redl, Kyung Sang Cho, Christopher B. Murray and Stephen O'Brien, IBM T.J. Watson Research Center and Columbia University MRSEC
Credit (Background Image): Franz Redl, Kyung Sang Cho, Christopher B. Murray and Stephen O'Brien, IBM T.J. Watson Research Center and Columbia University MRSEC
Source: Nature 423, 968 - 971 (26 June 2003); Three-dimensional binary superlattices of magnetic nanocrystals and semiconductor quantum dots , F. X. REDL, K.-S. CHO, C. B. MURRAY & S. O'BRIEN
This work was supported primarily by the MRSEC Program of the National Science Foundation. Further support was granted by the DARPA Metamaterials initiative and by DARPA through the Army Research Office.