In the Technology Focus Research Highlights of the January 2010 issue of Nature Photonics (Nature Photon. 4, 21; 2010), two of the highlights had incorrect journal references.

The journal reference for “Making microneedles” should have been Adv. Mater. doi:10.1002/adma.200902418 (2009).

The journal reference for “Self-assembly of nanocubes” should have been Nano Lett. 9, 4049–4052 (2009). The corresponding image credit for this highlight should have been © 2009 ACS.