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News & Events

Geoff Gillon, B.B.A., CPA

Geoff Gillon


Mr. Gillon began his career in the audit practice of Grant Thornton in Atlanta after graduating from The University of Georgia. During his time at Grant Thornton, Mr. Gillon participated in international rotations in the London, England and Sydney, Australia offices and progressed through the ranks to Experienced Audit Manager prior to starting his career as a Financial Controller.

Mr. Gillon joins West Physics with 7+ years of Controller experience, most recently at eHire, LLC and Collective Insights Consulting, a Georgia Fast40 recipient, where he was integral in establishing foundational financial and operational processes during a period of significant growth.

Originally from Toronto, Canada, Mr. Gillon resides in Atlanta with his partner, Kathryn. In his free time, he is an avid traveler, golfer, and runner.


  • Bachelor of Business Administration in Accounting – University of Georgia


  • Georgia State Board of Accountancy – Certified Public Accountant

Vinobalan “Vino” Durairaj, Ph.D., DABR

Vino DurairajBiography

Before joining West Physics, Dr. Durairaj pursued a broad range of magnetic materials science research for his Ph.D. at the University of Kentucky. He developed novel compounds using sophisticated crystal growth techniques, characterized synthesized crystals using x-ray diffraction crystallography, and investigated their physical properties in the presence of applied electric and high magnetic fields.

Dr. Durairaj also has engaged in space physics research at the Indian Space Research Organization, as well as working in the area of cosmological theoretical physics. Finally, Dr. Durairaj has extensive teaching experience and has a great interest in helping others to understand and enjoy science and technology.

Dr. Durairaj is originally from Tirunelveli, India.


  • Doctor of Philosophy in Physics – University of Kentucky
  • Master of Science in Physics – University of Kentucky
  • Master of Science in Physics – Pondicherry University
  • Bachelor of Science in Physics – Manonmaniam Sundaranar University


  • American Board of Radiology – Diagnostic Radiological Physics


  • American Association of Physicists in Medicine
  • American Physical Society
  • Neutron Scattering Society of America


G Cao, V Durairaj, S Chikara, LE De Long, P Schlottmann – “Observation of Strong Spin Valve Effect in Bulk Ca3(Ru1-xCrx)2O7″ – Phys. Rev. Lett. 100 016604 (2008).

G Cao, V Durairaj, S Chikara, LE Delong, S Parkin, P Schlottmann – “Non-Fermi-liquid Behavior in nearly Ferromagnetic SrIrO3 Single Crystals” – Phy. Rev. B 76 100402(R) (2007).

G Cao, V Durairaj, S Chikara, S Parkin, P Schlottmann – “Partial Antiferromagnetism in Spin-chain Sr5Rh4O12, Ca5Ir3O12 and Ca4IrO6 Single Crystals” – Phys. Rev. B 75 134402 (2007).

S Chikara, V Durairaj, WH Song, YP Sun, XN Lin, A Douglass, G Cao – “Borderline Magnetism in Sr4Ru3O10: Impact of Dilute La and Ca Doping on Itinerant Ferromagnetism and Metamagnetism” – Phys. Rev. B 73 224420 (2006).

V Durairaj, S Chikara, XN Lin, A Douglass, G Cao, P Schlottmann, ES Choi, RP Guertin – “Highly Anisotropic Magnetism in Cr Doped Perovskite Ruthenates” – Phys. Rev. B 73 214414 (2006).

V Durairaj, XN Lin, S Chikara, E Elhami, A Douglass, G Cao, ZX Zhou, P Schlottmann – “Observation of Oscillatory Magnetoresistance Periodic in 1/B and B in Ca3Ru2O7″ – Phys. Rev. B 73 054434 (2006).

XN Lin, ZX Zhou, V Durairaj, P Schlottmann, G Cao – “Colossal Magnetoresistance by Avoiding a Ferromagnetic State in the Mott System Ca3Ru2O7″ – Phys. Rev. Lett. 95 017203 (2005).

Rosa McTee



Rosa McTee studied business and accounting at Manhattan Community College in New York City.  Ms. McTee has 15 years of experience in the medical physics industry and over 25 years of operational management experience prior to her current role. 
Ms. McTee is originally from New York.

Mary Quattlebaum, B.A.

Mary Quattlebaum


Ms. Quattlebaum studied International Affairs with a concentration in business, economics, and policy at Kennesaw State University in Kennesaw, GA. After graduating from college, Ms. Quattlebaum joined West Physics in February of 2008 and was in charge of West Physics’ administrative functions until moving into quality & process improvement in 2020.

Ms. Quattlebaum is originally from Columbia, South Carolina.


  • Bachelor of Arts; International Affairs – Kennesaw State University