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Graduate Student Seminar - 12/5/2014

"Scanning Localized Magnetic Fields in a Microfluidic Device with a Single Spin"

by Kangmook Lim

Friday, December 5, 2014 -- 12:00 p.m.
Large Conference Room, 1207 Energy Research Facility

Advisor:  Associate Professor Edo Waks

Nitrogen vacancy (NV) color centers in diamond enable local magnetic field sensing with high sensitivity
by optical detection of electron spin resonance (ESR). The integration of this capability with microfluidic
technology has a broad range of applications in chemical and biological sensing. In this talk, I will explain a
method to perform localized magnetometry in a microfluidic device with nanometer spatial precision.
The device manipulates individual magnetic particles in three dimensions using a combination of flow
control and magnetic actuation. I am going to present a new experimental result of map out the local field distribution of the magnetic particle by manipulating it in the vicinity of a single NV center and optically detecting the induced Zeeman shift. This result could open up the possibility for real-time sensing applications in a microfluidic platform.

For additional information about the IREAP Graduate Student Seminars, contact Joe Garrett (jgarret2 at, David Somers (, or Joe Murray (

Return to the Graduate Student Seminars schedule.