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AMO/QO Physics Seminar


"Bio sensing with diamond"


Dr. Philip Hemmer
Texas A&M University

ABSTRACT 

Recently nanoscale magnetometers based on nitrogen vacancy (NV) color centers in diamond have been proposed for a variety of applications ranging from imaging of single proteins in living cells, to room temperature quantum computers, to sub-wavelength optical lithography. Among the advantages of the NV are excellent photo-stability, low toxicity, and the ability to detect multiple parameters like magnetic and electric fields, and temperature with high precision. However the NV has limitations that have slowed the realization of some of these applications. At the same time, new classes of fluorescent emitters in diamond have been explored. The most notable of these being the silicon-vacancy (SiV) which is photostable in nanodiamonds down 1.6 nm at room temperature. In this talk I will briefly discuss the good and bad properties of NV and SiV diamond in the context of particular applications. I will also discuss our preliminary data on the growth of SiV doped nanodiamonds with size ranging from 2-10 nm, directly from organic materials. The ability to produce high quality, ultrasmall nanodiamonds with stable color centers NV or SiV centers is critical for many biological applications.


Tuesday, April 14, 2015
IQSE 578, 1:00 p.m.
Mitchell Physics Building


Institute for Quantum Science and Engineering
Texas A&M University



Host: Hans Schuessler