Faculty Directory

Christou, Aris

Christou, Aris

Fellow, APS
Fellow, IEEE
Materials Science and Engineering
Mechanical Engineering
Maryland Energy Innovation Institute
Center for Risk and Reliability
2309A Chemical and Nuclear Engineering Building


Ph.D., University of Pennsylvania, 1971


Professor Aris Christou previously served as the Chair of the Department of Materials and Nuclear Engineering. He currently conducts research in compound semiconductor materials and process science, radiation effects in materials and devices, manufacturing science, and reliability. From 2000-2003, Dr. Christou was the Director of the NSF Center COEDIP, the Center of OptoElectronic Devices, Interconnects and Packaging. Prior to his appointments at the University of Maryland, he was a Professor of Electronic Materials at Rutgers University, and research scientist at the Naval Research Laboratory. He has authored two books and has been the editor of three others. Dr. Christou has more than 150 publications in archival journals and 14 patents (including two pending), and has organized international conferences in GaAs devices, materials and reliability. He is a Fellow of the IEEE, a Fullbright Fellow, a recipient of the DoD-Berman Publication Awards, and an IEEE Guest Lecturer. Professor Christou was the 2004 recipient of the INEER Achievement Award (International Network for Engineering Education and Research) for achievements in international education and research in engineering, as well as the recipient of the 2007 ASM International Burgess Memorial Award "For his seminal scientific contributions in the field of electronic materials, packaging and devices." Professor Christou is a member of APS, ASM, TMS and MRS, was the past President of the Federation of Materials Societies from 2004-2006, and is presently a member of the FMS Board of Trustees. Full Bio »


For a full list of honors and awards, please visit Professor Christou's web site

Radiation effects in microelectronics, radiation hard design methodologies and physics of failure of compound semiconductors in space applications. Materials degradation, radiation induced defects in metals, corrosion and high pressure induced transformations in steels and iron alloys.

  • ENES100 : Introduction to Engineering Design
  • ENES 230: Introduction to Materials and Their Applications
  • ENMA 300: Introduction to Engineering Materials (formerly ENES 230)
  • ENMA 426/ENRE 447: Reliability of Materials
  • ENMA 463: Macroprocessing of Materials in Electronic Packaging
  • ENMA 626/ENRE600 : Reliability Engineering

For a more extensive list of selected publications, please visit Proessor Christou's web site
For the entire publication list, please see Professor Christou's C.V. (PDF)

  • T.J. Anderson, K.D. Hobart, J.D. Greenlee, D.I. Shahin, A.D. Koehler, E.A. Imhoff, R.L. Myers-Ward, A. Christou, F.J. Kub, “UV and EUV Detectors Based on the Graphene/SiC Heterojunction”, Submitted to Electronic Letters, 2014.
  • Gary Paradee, Tom Martin, Aris Christou, “Fatigue Properties of Graphene on Flexible Substrates”, IEEE Transactions on Device and Materials Reliability, December 2014
  • Gary Paradee, Tom Martin and Aris Christou, “Fatigue Properties of Uniform and Patterned ITO on Flexible Substrates,” J. Microelectronics Reliability, Accepted 2014 and to be published 2015.
  • Gary Paradee, Eric Bailey and A. Christou, “Stress relaxation behavior and low cycle fatigue behavior of bulk SAC 305,” J. Mater. Sci. Electron (2014) 25:4122-4128.
  • Gary Paradee, Tom Martin, Aris Christou, “Fatigue Properties of Graphene on Flexible Substrates”, IEEE Transactions on Device and Materials Reliability, December 2014.
  • A. Christou, “Process-Reliability Relationships in GaN and GaAs Field Effect Transistors and HFETs”, Compound Semiconductor Manufacturing Technology, Digest_2013, pp 391-394.
  • Kaushik Chatterjee, Mohammad Modarres and Joseph B. Bernstein. "Fifty Years of Physics of Failure" (PDF), Journal of the Reliability Informaiton Analysis Center, January 2012.
  • M. Sawant, and A. Christou. "Failure modes and effects criticality analysis and accelerated life testing of LEDs for medical applications." Solid-State Electronics, (2012) 78, 39–45.
  • Martin Peckerar, Thomas Martin, and Aris Christou. http://christou.umd.edu/publications/conferences.html"Nanoparticle Technology for Power Integration With Flexible Substrates."
  • Christou, A., & Fantini, F. "Introduction to the special issue on GaN and related nitride compound device reliability." IEEE Transactions on Device and Materials Reliability, (2008) 8(2), 239-239.
  • Christou, A. "Monte Carlo Reliability Model for Microwave Monolithic Integrated Circuits." Quality and Reliability Engineering International, (2008) 24(3), 315-329.
  • S. Yang, A. Christou, “Failure Model for Silver Electromigration,” IEEE Trans Materials, Device Reliability, Vol2,  Feb 2007.
  • S. Yang, J.Wu, A. Christou, “Initial Stages of Silver Electrochemical Migration Degradation,” Microelectronics Reliability vol.46 (2006) 1915-1921.
  • C.C. Zhang, Aris Christou, “Reliability of Leadless Interconnects in GaAs ASICS”, J. of RIAC, 2006, No.2, 20-26.
  • Ahangir Alam, Andrei E. Botchkarev, James A. Griffin, John M. Zavada, Aristos Christou and S. Noor Mohammad, “Optical properties of MBE-grown GaAs1-xNx alloys”, Phil Mag, 1121-1134, 2006.
  • S. J. Chang, C. F. Shen, S. C. Shei, C. S. Chang, W. S. Chen, T. K. Ko, J.K.Shei and Y. S. Sun, "Highly Reliable Nitride-Based LEDs with Internal ESD Protection Diodes" (PDF), IEEE Transactions on Device and Materials Reliability, November 2005.
  • L.Mohaddes-Ardahilli, L. Martinez-Miranda, L. Salamanca-Riba, A. Christou, William Bentley and M. Al- Sheikhley, “Preferred Orientation of DNA Olionucleotide probes on the (2x4) Reconstructed Surface of (001) GaAs,” J Appl. Physics Vol 95, No. 11, Part 1 (6021-6024), June 2004.
  • Mohamad Al-Sheikhley, D. Sweet, Lourdes Salamanca-Riba, B. Varughese, J. Silverman, Aris Christou and William Bentley, “Radiation-Induced Failure Mechanisms of GaAs–Based Biochips,” IEEE Transactions on Device and Materials Reliability, vol. 4, No. 2 (192-197), June 2004.
  • C. Zhang, P. Yalamanchili, M. Al-Sheikhley and A. Christou, Metal Migration in Epoxy Encapsulated ECL Devices, 2004 ESREF, Oct. 2004.
  • L.Mohaddes-Ardahilli, L. Martinez-Miranda, J. Silverman, A. Christou, L. Salamanca- Riba and M. Al- Sheikhley, “Attachment of DNA Probes on GaAs Surfaces”, Appl. Physics Lettrs, 83, No. 1, pp. 192-194 (2003).
  • N. Strifas, P. Yalamanchili, A. Christou, “Reliability Model for Polyimide-Metal Interconnect Shorts,” Qual and Reliability Int. 20:1-13 (2004).
  • M. Linnik and A. Christou, “Calculations of optical properties for Quartenary III-V semiconductor alloys in the transparent region and above” (PDF), Physica B, 318, pp 140-161 (2002). Abstract »

Reflecting on 20 Years of Excellence and Innovation

Materials Science and Engineering celebrated its anniversary on November 7, 2023.

MSE Celebrates 20 Years of Innovation and Excellence

The Department invites alumni and friends to attend the anniversary on Tuesday, November 7, 2023. 

Aristos Christou Heads Project for GaN Amplifiers in MRI Systems 

The study will enable future MRI systems to identify artifacts with an enhanced resolution and sensitivity.

MSE Creates New Undergraduate Award

Established by Professor Aris Christou, the award will honor academic excellence in the areas of electronic and photonic materials.

New Developments in Power Electronics Could Improve Sustainability Efforts

A new class of power switching devices could ensure reliability and system robustness at the device level.

Clark School of Engineering Professor Joseph Silverman Remembered

Prof. Silverman, who passed on November 6 at age 97, touched countless lives over the course of a long and distinguished career.

Aris Christou discusses GaN device reliability solutions at ASU

Christou presented on the performance and reliability issues of GaN devices.

Christou’s Group presents short course, research at CS ManTech

Christou and students travel to Austin, TX to present short course and diamond power electronics research

MSE Grad Student, David Shahin, Receives Award for Diamond Tech Research

Shahin’s presentation at the MRS Fall 2017 Meeting took second place.

MSE Professor Aristos Christou Elevated to IEEE 'Life Fellow'

Christou received this honor based on significant accomplishments and advancements to the engineering field.

Professor Aristos Christou Leads Research of Diamond Electronics

Carbon electronics that are built around graphene will now include diamond.

MSE Researchers Shahin and Christou Published in Applied Physics Express

David Shahin and Aris Christou collaborate with U.S. Naval Research Lab on high-electron-mobility transistors.

Shahin Receives CALCE Best Presenter Award

MSE grad student David Shahin named Fall 2015 Electronic Products and Systems Consortium Technical Review Best Student Presenter

Shahin Among Top 2% of UMD Graduate Assistants

Graduate School honors Ph.D. student with 2015 Outstanding Graduate Assistant Award

Bailey Awarded NSF Graduate Research Fellowship

Four materials science students receive Honorable Mentions.

Shahin Wins ASEE Naval Research Internship

NREIP Program selects MSE grad student for summer program.

Christou Joins Md. Delegation to European Offshore Wind Energy Conference

Professor will present paper on predictive modeling of grid reliability.

Undergrad Among First to Map Solar Cell Parameters at Sub-Micron Resolution

Bailey receives second SEEDS Fellowship, will conduct work in Leite Lab.

Offshore Wind Energy and Reliability

Clark School professors support the State of Maryland's efforts to establish a resilient wind farm.

Exploring Offshore Wind Energy for Maryland

Md. Higher Education Commission funds Clark School study of reliability, cost-effectiveness of wind-generated energy.

Christou Invited to Discuss Wide Bandgap Semiconductors, Physics-of-Failure

Professor will be featured speaker in summer conferences in Greece.

Christou Receives IEEE Service Award

Professor recognized for pioneering work on high-impact journal.

Workshop on Wide Bandgap Power Semiconductors Stresses Need for Commercial Development

Participants from academia, government and industry discuss manufacturing initiative, new consortium to address challenges.

Christou Organizes Workshop on Wide Bandgap Semiconductors

Event to be held Oct. 23 at Kim Engineering Building.

Christou to Deliver Keynote at Micro&Nano 2012

Professor will also be recognized for contributions to semiconductor research.

Christou Tapped for Expert Panel in Condensed Matter Physics

New program will fund research in Greece.

Christou Appears on "Platts Energy Week"

Professor discusses rise of applicants to nuclear engineering programs.

NRC Funds Development of New Grad-Level Corrosion Courses

Ankem, Christou, and Moderres to create new modules for nuclear, reliability, and sustainability engineering programs.

NRC Collaboration Helps Bring Nuclear Engineering Education Online

Nuclear Engineering graduate degrees (M.Eng. and Graduate Certificate) available 100% online.

Christou Designs Better Lasers for Threat Detection

New lasers are tunable, span longer wavelengths.

Christou Receives ASM Award

International society recognizes original research, leadership.

Materials Camp Will Help Teachers Innovate

Sessions seek to improve K-12 education, inspire students.

Professor Christou hosts the Federation of Materials Societies Award Reception

Prof. Christou outlined the directions to be take by FMS in 2006

  • IEEE

  • APS