Research Interest

Dr. Williams’ research is focused primarily in the Electromechanical Engineering, Optics, and Materials Science.  He uses lithographic and electrochemical techniques to pattern polymers, metals and glasses for the development of mechanical, optical, or fluidic devices.  This fabrication process, commonly known as LIGA, uses any number of different lithographic light sources and electrochemical baths, requiring a solid understanding of materials science to accurately design and model and test the performance of these devices.

Degrees

• B.S. in Physics from Louisiana Sate University in 1996
• M.S. in Engineering Science from Louisiana Sate University in 2001
• Ph.D. in Engineering Science from Louisiana Sate University in 2004

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Recent Publications & Patents

J. D. Williams, “Fatigue and Fracture Mechanics of LIGA Fabricated Nickel and Ni-20%Fe Microstructures,” International Journal of Theoretical and Applied Multiscale Mechanics 1(3), 266 - 279 (2010).

J. D. Williams, P. Sun, W. C. Sweatt, A. R. Ellis, “Woodpile photonic crystals using the LIGA technique,” Journal of Micro/Nanolithography, MEMS, and MOEMS 9(02), 023011 (2010).

J. D. Williams, C. Schmidt, D. Serkland “Processing Advances in Transparent Foturan Glass MEMS,” Journal of Applied Physics A, 99 (4), 777-782 (2010).

R. Kamali S., J. D. Williams, “Frequency dependant control of grain size in electroplating gold for nanoscale applications,” Electrochemical and  Solid State Letters, Vol. 12 (6), (2010).

J. Namkung, Y. Zou, R. Kamali, J D. Williams, R. G. Lindquist, “Improvement of sensing characteristics by using microelectroplating technique for nematic liquid crystals based chemical and biological sensors,” CLEO, San Diego, CA, (2010).

K. H. M. Tantawi, J. Oates, J. D. Williams, “Processing of lithographically defined Apex glass structures with smooth and transparent sidewalls,” 6th International Conference and Exhibition on Device Packaging, Scottsdale, AZ, (2010).

R. Kamali S., J. D. Williams, “Application of Pulse Frequency to Control the Nano Grain Size of Gold Plated Thin Films “ICCE-17, Honolulu, HI. (2009).

G. Papadopoulos, et.al, “Air Entrainment Studies for a Supersonic Micro Ejector System,” ASME Fluids Engineering Conference, Jacksonville Fl. (2008).

X. G. Peralta, et.al, "Flexible, Large-Area Metamaterials Fabricated on Thin Silicon Nitride Membranes," in Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference and Photonic Applications Systems Technologies, OSA Technical Digest (CD) (Optical Society of America, 2008), paper CFY4.

X. Peralta, et.al, “Terahertz metamaterials on Thin Silicon Nitride Membranes,” MRS Spring Meeting # 1077-L07-18 (2008).

X.G. Peralta, I. Brener, J. O’Hara, A. Azad, E. Smirnova, R. D. Averitt, J.D. Williams, “Terahertz Metamaterials,” U.S. patent application No. 12/262,422,  October 31, 2008.

W. Sweatt, J. D. Williams, “Laser Remote Sensing of Backscattered Light from a Target Sample,” US Patent No. US 7,336,351 B1, Feb. 26, 2008.