Supplementary information

From the following article:

Nanoscale imaging magnetometry with diamond spins under ambient conditions

Gopalakrishnan Balasubramanian, I. Y. Chan, Roman Kolesov, Mohannad Al-Hmoud, Julia Tisler, Chang Shin, Changdong Kim, Aleksander Wojcik, Philip R. Hemmer, Anke Krueger, Tobias Hanke, Alfred Leitenstorfer, Rudolf Bratschitsch, Fedor Jelezko & Jörg Wrachtrup

Nature 455, 648-651(2 October 2008)

doi:10.1038/nature07278