Ziem, Florestan C. Götz, Nicolas S. Zappe, Andrea Steinert, Steffen Wrachtrup, Jörg Highly Sensitive Detection of Physiological Spins in a Microfluidic Device Sensing and imaging paramagnetic species under physiological conditions is a key technology in chemical and biochemical analytics, cell biology, and medical sciences. At submicrometer length scales, nitrogen-vacancy (NV) centers in diamond offer atom-sized probes for magnetic fields. We show that spin relaxation of an ensemble NV sensor allows sensing of adsorbed and freely diffusing manganese­(II) ions and adsorbed ferritin. Sensitivities approach 175 Mn ions and 10 ferritin proteins per diffraction limited spot under ambient conditions. probe;Sensitive Detection;technology;species;Physiological Spins;cell biology;Sensitivities approach 175 Mn ions;analytic;ambient conditions;imaging;ensemble NV sensor;relaxation;submicrometer length scales;center;Microfluidic DeviceSensing;diffraction;manganese;chemical;10 ferritin proteins 2013-09-11
    https://acs.figshare.com/articles/journal_contribution/Highly_Sensitive_Detection_of_Physiological_Spins_in_a_Microfluidic_Device/2378134
10.1021/nl401522a.s001