John Butler, Ph.D.

Dr. John Butler received his B.S., M.S., and Ph.D. degrees in Electrical Engineering from the University of California, Riverside, in 2009, 2011, and 2014, respectively.

In the fall of 2018, Dr. Butler joined the College of Engineering at California Baptist University as an Assistant Professor. Prior to this, he served as an Adjunct Professor since 2014. Dr. Butler has taught courses including: Engineering from a Christian Worldview, Introduction to Engineering Design, Circuit Theory I, Circuit Theory II (lab section), Signals and Systems (lab section), Electronics I (lab section), Applied Electromagnetics, Radio-Frequency Engineering and Advanced Topics in RF Engineering.

Dr. Butler’s research background includes nanoscale fabrication and characterization, particularly of magnetic thin films for data storage and logic devices. His research into multilevel bit patterned magnetic media showed that feasibility of using three magnetic layers to triple the areal density of magnetic hard disk drives. Since his Ph.D research on Fabrication and Characterization of Nanomagnetic Media for Data
Storage and Logic Operations in 2015, he has worked as a research engineer for the Center for Nanoscale Science and Engineering in the nanofabrication cleanroom facility at the University of California, Riverside. During his time there, he has helped train the next generation of engineers how to conduct their research in the nanoscale. Since working at CBU, Dr. Butler has collaborated with Dr. Rickard on the development of a nanofabricated sensor that monitors intraocular strain. Dr. Butler’s research has resulted in ten papers
within peer-reviewed journals.

Dr. Butler is married to his wife, Maggie, and in his free time he enjoys music, movies and traveling. He attends Harvest Christian Fellowship in Riverside.

- Engineering Christian Worldview
- Introduction Engineering Design
- Engineering Service I
- Circuit Theory I
- Circuit Theory II (Lab)
- Signals and Systems (Lab)
- Electronics I (Lab)
- Applied Electromagnetics
- Radio-Frequency Engineering
- Advanced Topics in RF Engineering

- Magnetic Data Storage
- Magnetic Logic Devices
- Nanofabrication
- Nanocharacterization
- Thin film deposition techniques
- Atomic/Magnetic Force Microscopy

Teaching Assistant
- Engineering Circuit Analysis I
- Engineering Circuit Analysis II
- Electronics, Smartphones and Mobile Internet
- Introduction to Electrical Engineering
- Electronic Circuits I
- Electronic Circuits II
- Magnetic Materials
- Nanostructure Characterization Laboratory
University of California, Riverside Sept. 2009 – July 2014

JOURNAL AND PEER-REVIEWED CONFERENCE PUBLICATIONS:
G. Fleming, J. Butler, R. Foist, “An Electronics Lab Project: Tutorial and Design of Printed Circuit Board "Big Blinky",” in 2020 ASEE Virtual Annual Conference, Jun. 2020.

N. Lazkani, S. Truitt, N. Kawaguchi, A. DeWolf, C. Van Zant, J. Villegas, A. Hassel, J. Park, C. Jones, J. Butler, M. Rickard, “Development of a Nanofabricated Sensor for Monitoring Intraocular Pressure via Ocular Tissue Strain,” in 41st Annual Int. Conf. of the IEEE Engineering in Medicine and Biology Society (EMBC), Jul. 2019, pp. 4363-4367.

D. Garcia, P. Lou, J. Butler, S. Kumar, “Spin-orbit torque induced reversible coercivity change in Co/Pd multilayer thin films,” Solid State Communications. 246, 1-4 (2016)

D. Garcia, J. Butler, N. Amos, S. Kumar, “Electric Current Induced Coercivity Change in Co/Pd Multilayer Thin Films,” Journal of Applied Physics. 118, 153902 (2015)

J. Butler, M. Schachar, B. Lee, D. Garcia, B. Hu, J. Hong, N. Amos, S. Khizroev, “Reconfigurable and non-volatile vertical magnetic logic gates,” Journal of Applied Physics Vol. 115, 163903 (2014).

W. Wang, I. Ruiz, K. Ahmed, H. Bay, A. George, J. Wang, J. Butler, M. Ozkan, C. Ozkan, “Silicon Decorated Cone Shaped Carbon Nanotube Clusters for Lithium Ion Battery Anodes,” Small Vol. 10, 3389–3396 (2014).

N. Amos, J. Butler, B. Lee, M. Shachar, B. Hu, Y. Tian, J. Hong, D. Garcia, R. Ikkawi, R. Haddon, D. Litvinov, S. Khizroev, “Multilevel-3D Bit Patterned Magnetic Media with 8 Signal Levels Per Nanocolumn,” PloS One Vol. 7, e40134 (2012).

N. Amos, E. Stefanescu, J. Butler, B. Lee, Y. Tian, R. Ikkawi, R. Chomko, V.L. Safonov, R. Haddon, D. Litvinov, S. Khizroev, “Three-Dimensional Non-Volatile Magnetic Universal Logic Gates,” Journal of Nanoelectronics and Optoelectronics Vol. 6, 132-137 (2011).

B. Hu, N. Amos, Y. Tian, J. Butler, D. Litvinov, and S. Khizroev, “Study of Co/Pd multilayers as a candidate material for next generation magnetic media,” Journal of Applied Physics Vol. 109, 034314 (2011).

M. Hudgins, J. Butler, R. Fernandez, F. Gertz, M. Ranaghan, R. Birge, R. Haddon, and S. Khizroev, “Photo-Response of Electrostatically Deposited Bacteriorhodopsin Monolayer Films for Protein-Based Disk Recording Beyond 10 Tbit/in2,” Journal of Nanoelectronics and Optoelectronics Vol. 5, 287-289 (2010).

DISSERTATION:
J. S. Butler, "Fabrication and Characterization of Nanomagnetic Media for Data Storage and Logic Operations," Ph.D. dissertation, Dept. Elect. Eng., University of California, Riverside, Riverside, CA. 2014.

Member of Faith Lutheran Church

"Each one should use whatever gift he has received to serve others, faithfully administering God's grace in its various forms." 1 Peter 4:10, NIV