Measuring Nanoparticle Permittivity in Colloidal Suspension

Sandia National Laboratories
2013 – 2014
  • Richard C Haskell

The Sandia National Laboratories clinic team characterized the permittivity of barium titanate particles in colloidal suspension as a function of primary particle size, synthesis method, and surfactant choice using electrochemical impedance spectroscopy.  To accomplish this goal, the team has built a sample holder to contain the suspension, developed a procedure to extract nanoparticle permittivity from the suspension permittivity, and integrated both of these deliverables into a testing procedure.


The Physics Clinic presents opportunities for students to work on practical projects relevant to industrial work. Students work on teams of 3–5 on a sponsored research or development project.