  Engineering nanostructures from the bottom up enables the creation of
carefully engineered complex structures that are not accessible via top down
fabrication techniques, in particular, complex periodic structures for
applications in photonics and sensing. In this work, we propose and demonstrate
a bottom up approach that can be adopted and utilized to controllably build
diamond nanostructures. A realization of periodic structures and optical
wave-guiding is achieved by growing nanoscale single crystal diamond through a
defined pattern.
