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Dr. Zednik’s expertise includes thin-films and coatings, ferroelectric and piezoelectric ceramics, non-volatile memory, tunable dielectrics, semiconductors, and mechanics of materials, as well as general materials science. His doctoral research at Stanford University focused on how phase transitions in nanocrystalline ceramic films are affected by biaxial stress. Dr. Zednik has investigated failures and provided product development support in a variety of industries: medical devices (implants, nitinol shape-memory components, packaging, etc.), consumer electronics, construction and pipelines (material deterioration, contamination, corrosion, fractures, etc.), consumer products, photovoltaics (solar panels), as well as thin-films and functional coatings. As a member of the adjunct faculty in the Department of Mechanical Engineering at Santa Clara University, Dr. Zednik teaches undergraduate and graduate level materials science and engineering classes. Before joining Exponent, Dr. Zednik was a Visiting Research Scientist at Fujitsu Laboratories Limited in Atsugi, Japan, where he studied the dielectric behavior of barium strontium titanate ceramic thin-films for microwave wireless communication. Prior to his graduate work, Dr. Zednik also worked for Halliburton Energy Services in Houston, Texas, and Manchester, England. His work in the petroleum industry was dedicated to the use of elastomeric polymers in oil-well drill mud-motors and progressing cavity pumps.
Zednik RJ, Varatharajan A, Oliver M, Valanoor N, McIntyre PC. Mobile ferroelastic domain walls in nanocrystalline PZT films: the direct piezoelectric effect. Advanced Functional Materials 2011; 21:3104–3110.
Guyer E, Zednik R. Sterile barriers for medical devices: Failure modes and mitigation. Plastic Eng 2010; 66(9):26–31, October.
Zednik RJ, Joseph R. The devastating effects of solvent entrapment on coating adhesion. Metal Finishing 2010; 108:7/8:39–42.
Zednik RJ, Joseph R. Evaluating over-aged powder coatings. Metal Finishing 2009; 107:10:40–44.
Zednik RJ. Stress effects in ferroelectric perovskite thin-films. Doctoral Dissertation, Stanford University, 2008.
Zednik RJ, McIntyre PC, Baniecki JD, Ishii M, Shioga T, Kurihara K. Relaxorlike dielectric behavior in Ba0.7Sr0.3TiO3 thin films. J Appl Phys 2007; 101:066104.
Uchida K, Zednik R, Lu C, Jagannathan H, McVittie J, McIntyre PC, Nishi Y. Experimental study of biaxial and uniaxial strain effects on carrier mobility in bulk and ultrathin-body SOI MOSFETs. IEDM 2004; 229–23.
Selected Presentations and Abstracts
Zednik RJ, McIntyre PC, Oliver MS, Varatharajan A, Valanoor N. Stress and strain effects in PZT ceramic films. Multifunctional Oxides: Nanophenomena in Functional Oxides, MS&T 2010.
Zednik RJ, Pan Z. Nanotechnology is already pervasive. Invited lecture, 2008–2009 Palo Alto Colloquium Series.
Zednik RJ, Baniecki JD, Ishii M, McIntyre PC, Shioga T, Kurihara K. Effect of stress evolution on dielectric loss behavior in Ba0.7Sr0.3TiO3 thin-films. Am Phys Soc 2007.
Zednik RJ, McIntyre PC. Biaxial stress-induced domain wall motion at room temperature in nano-crystalline lead zirconium titanate thin films. Am Phys Soc 2007.
Zednik RJ, McIntyre PC. Biaxial stress induced domain wall motion in nanocrystalline lead zirconium titanate thin-films. Mat Res Soc 2007.
Zednik RJ, McIntyre PC, Baniecki JD, Ishii M, Kurihara K, Yamanaka K. Relaxor-like dielectric behavior and universal relaxation law in Ba0.7Sr0.3TiO3 thin-films. Japan Soc Appl Phys 2007.
Zednik RJ. Stress effects on switching behavior of PZT films. Non-Volatile Memory Technology Research Initiative Meeting 2007.
Zednik RJ, Baniecki JD, Ishii M, McIntyre PC, Shioga T, Kurihara K. Dipolar orientational glass phase transition behavior in Ba0.7Sr0.3TiO3 films. ISIF 2006.
Zednik RJ, Baniecki JD, Ishii M, McIntyre PC, Shioga T, Kurihara K. Dipolar orientational glass-like behavior in Ba0.7Sr0.3TiO3 thin-films. IEEE: ISAF 2006.
Zednik RJ, McIntyre PC. Effect of stress evolution on lead zirconium titanate thin-film phase transformations. 33rd Annual SSRL Meeting, 2006.
- Materials Research Society—MRS
- The American Society for Materials—ASM International
- The Minerals, Metals & Materials Society—TMS
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- Ph.D., Materials Science and Engineering, Stanford University, 2008
- M.S., Materials Science and Engineering, Stanford University, 2005
- B.S., Materials Science and Engineering, Rice University, 2003
- B.A., Economics, Rice University, 2003
- Stanford University Dean's Doctoral Diversity Fellow
- Stanford School of Engineering Groswith Fellow
- ASM International Houston C.F. Lewis Memorial Fund Scholar
- Rice University Louis J. Walsh Scholar in Engineering
- Registered Professional Metallurgical Engineer, California, #MT1961
- Licensed Professional Metallurgical Engineer, Texas, #109645
- Lecturer, Santa Clara University, Department of Mechanical Engineering
- German
- Spanish
- French
- Portuguese
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