Understanding physical quantities at the nanoscale is a frontier research topic that has profound and broad impact covering fundamental physics to emerging technologies. The spins associated with Nitrogen-Vacancy (NV) centers in diamond has some unique advantages as a nanoscale sensor for precision measurement of magnetic field, electric field, temperature and strain. Among several applications, I will introduce the need for imaging single biomolecule and the prospects of an NV spin magnetometer for developing such a molecular structure microscope. I will present some developments and challenges in NV based precision sensing and imaging. The talk will cover aspects of NV defects in diamond, Nanoscale magnetic sensing, Spin noise spectroscopy, Quantum controls and Nanoscale NMR/MRI
Gopalakrishnan Balasubramanian received his PhD in physics at the Indian Institute of Science, Bangalore (India) in 2005 for studies on electrical and magnetic properties of disordered carbon films. From 2005 to 2006, he carried out research as a postdoctoral fellow at the University of Karlsruhe, investigating the onset of magnetism in low-dimensional materials. Following that, he worked as a postdoctoral researcher at the University of Stuttgart on developing Nitrogen-Vacancy (NV) defects in diamonds for use in quantum sensing and imaging from 2006 to 2010. Since 2011, he has headed the Max Planck Research Group Nanoscale Spin Imaging at the Max Planck Institute for Biophysical Chemistry, Göttingen (Germany).