John D. Williams Assistant Professor of Electrical and Computer Engineering Associate Director of Nano Micro Devices Center Contents Patents Publications International Conference Proceedings

1. J. D. Williams, R. Kamali-Sarvestani, "High Quality Factor Resonator," US Provisional Patent Application, filed Oct. 30, 2010.
2. 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.
3. J. D. Williams, W. Sweatt, "Method to Fabricate a Tilted Logpile Photonic Crystal," US Patent No. US 7,820,365 B1, Oct. 26, 2010.
4. 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.

1. K. H M Tantawi, E. Waddell, J. D. Williams "Optical Properties of Photodefinable Glasses," Applied Physics Letters, submitted, March 2011.
2. R. Kamali-Sarvestanti, J. D. Williams, "Design and Fabrication of Monolithic High Quality Factor RF-Solenoids Using Dielectric Substrates," Microwave Journal, In press for October 2011.
3. P. Sun, J. D. Williams, "Passband modes beyond waveguide cutoff in metallic tilted-woodpile photonic crystals," Optics Express, 19(8) pp. 7373-7380 (2011).
   DOI #: 10.1364/OE.19.007373
4. K. H M Tantawi, J. Oates, Reza Kamali-Sarvestani, N. Berquist, J. D. Williams "Processing of photosensitive APEXTM glass structures with smooth and transparent sidewalls," Journal of Micromechanics and Microengineering, 21, 017001 (2011).
   DOI #: 10.1088/0960-1317/21/1/017001
5. 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).
   DOI #: 10.1504/IJTAMM.2010.033604
   Paper
6. J. D. Williams, P. Sun, W. C. Sweatt, A. R. Ellis, "Metallic-tilted woodpile photonic crystals in the midinfrared," Journal of Micro/Nanolithography, MEMS, and MOEMS 9(02), 023011 (2010).
   DOI #: 10.1117/1.3427162
7. J. D. Williams, C. Schmidt, D. Serkland "Processing Advances in Transparent Foturan Glass MEMS," Journal of Applied Physics A, 99 (4), 777-782 (2010).
   DOI #: 10.1007/s00339-010-5721-1
8. 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).
   DOI #: 10.1149/1.3355030
9. X. G. Peralta, M. C. Wanke, C. L. Arrington, J. D. Williams, I. Brener, A. Strikwerda, R. D. Averitt, W. J. Padilla,3 E. Smirnova,4 A. J. Taylor,4 and J. F. O’Hara4, "Large-area metamaterials on thin membranes for multilayer and curved applications at terahertz and higher frequencies," Applied Physics Letters 94, 161113 (2009).
   DOI #: 10.1063/1.3114416
10. J. D. Williams, Ren Yang, and W. Wang, "Numerical Simulation and Test of a UV-LIGA Fabricated Electromagnetic Micro-relay for Power Applications," Sensors and Actuators A: Physical, Vol. 120(1), 154-162 (2005).
    DOI #: 10.1016/j.sna.2004.10.034
11. J. D. Williams and W. Wang, "Microfabrication of an Electromagnetic Power Micro- Relay Using SU-8 Based UV-LIGA Technology," Microsystem Technologies, 10(10), 699-705 (2004)
    DOI #: 10.1007/s00542-004-0396-1
12. J. D. Williams and W. Wang, "Using Megasonic Development of SU-8 To Yield Ultra-High Aspect Ratio Microstructures With UV Lithography," Microsystem Technologies 10(10), 694-698 (2004).
    DOI #: 10.1007/s00542-004-0395-2
13. J. D. Williams and W. Wang, "Study on the postbaking process and the effects on ultraviolet lithography of high aspect ratio SU-8 microstructures," J. of Microlithography, Microfabrication, and Microsystems, 3(4), 563-568 (2004).
    DOI #: 10.1117/1.1792650
14. Ren Yang, J. D. Williams, and W. Wang, "A Rapid Micro-mixer/reactor Based on Arrays of Spatially Impinging Micro-jets," Journal of Micromechanics and Microengineering 14, 1345-1351 (2004).
    DOI #: 10.1088/0960-1317/14/10/008
15. Wenhao Wu, J. Williams, P.W. Adams, "Zeeman Splitting of the Coulomb Anomaly: A Tunneling Study in Two Dimensions", Phys. Rev. Lett. 77, 1139 (1996).
    DOI #: 10.1103/PhysRevLett.77.1139

International Conference Proceedings:

1. R. Kamali-Sarvestanti, J. D. Williams, "New High Quality Factor Solenoid Based Tuned Resonator," IEEE International Microwave Symposium, Baltimore, MD. June 5-9, 2011.
   Slideshow
2. R. Kamali-Sarvestanti, J. D. Williams, "Fabrication of High Quality Factor RF-Solenoids Using Via Structures," IEEE Wireless and Microwave Technology Conference, Clearwater FL. April 18-19 2011.
   Slideshow
   DOI #: 10.1109/WAMICON.2011.5872901
3. R. Kamali S., J. D. Williams, "Fabrication of High Quality Factor RF-Resonator Using Embedded Inductor and Via Capacitor," Conference of the IEEE Industrial Electronic Society (IECON) Phoenix, AZ. (Nov. 2010).
   DOI #: 10.1109/IECON.2010.5675102
4. R. Kamali S., J. D. Williams, "Pulse Plating Effects on Nano Grain Size of Gold Films," Alabama Composites Conference, Birmingham, AL (Aug. 2010).
5. K. H. M. Tantawi, J. D. Williams, "The Biology Age.. Electricity from Proteins," Alabama Composites Conference, Birmingham, AL (Aug. 2010).
6. 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, (May 2010).
7. 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, (March 2010).
   Slideshow
8. 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).
   Slideshow
9. G. Papadopoulos, et.al, "Air Entrainment Studies for a Supersonic Micro Ejector System," ASME Fluids Engineering Conference, Jacksonville FL. (2008).
   Paper
   DOI #: 10.1115/FEDSM2008-55220
10. 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.
    Slideshow
    Optics InfoBase Page
11. X. Peralta, et.al, "Terahertz metamaterials on Thin Silicon Nitride Membranes," MRS Spring Meeting # 1077-L07-18 (2008).
    Paper
12. J. Williams, et.al, "LIGA Fabricated Photonic Crystals for the Mid-IR," PECS VII 2007.
13. J.D. Williams, C. Arrington, W. C. Sweatt, D. W. Peters, I. El-Kady, A. R. Ellis, J. Verley, F.B. McCormick, "Tilted logpile photonic crystals using the LIGA technique," Proc. SPIE 6289, p. 62890A (2006).
    Paper
    Slideshow
    DOI #: 10.1117/12.681214
14. Schmidt CF, Sweatt WC, El-Kady I, F.B. McCormick, D.W. Peters, S.H. Kravitz, J.C. Verley, U. Krishnamoorthy, D. Ingersoll, W.G. Yelton, G. Subramamia, J.D. Williams, "New Infrared photonic lattice coating," Proc. SPIE 6289, p. 628916 (2006).
    DOI #: 10.1117/12.679875
15. F. B. McCormick, J. G. Fleming, S. Mani, M. R. Tuck, J. D. Williams, C. L. Arrington,H. Kravitz, C. Schmidt, G. Subramania, J. C. Verley, A. R. Ellis, I. El-kady, D. W. Peters, M. Watts, W. C. Sweatt, J. J. Hudgens, "Fabrication and Characterization of Large-Area 3-D Photonic Crystals," 2006 IEEE Aerospace Conference, VOLS 1-9 :1820-1827 (2006).
    Paper
    DOI #: 10.1109/AERO.2006.1655892
16. El-Kady et.al, "Photonic Crystals: From Nanosize Scientific Novelty to Realizable Applications," International Conference on Nanotechnology, Egypt, 2005.
17. J.A. Palmer, J. D. Williams, T. Lemp, T. M. Lehecka, Francisco Medina, R. B. Wicker, "Advancing Three-Dimensional MEMS by Complementary Laser Micromanufacturing," Proc. SPIE 6109, p. 61090A (2006).
    DOI #: 10.1117/12.641244
18. R. Liu, X. Wang, Z. Zhou, and J. D. Williams, "Microneedles Array for Fluid Extraction and Drug Delivery," IEEE International Symposium on Micromechanics and Human Science, p. 239-244 (2003).
    DOI #: 10.1109/MHS.2003.1249939
19. J. Williams and W. Wang, "UV Lithography process for ultra high aspect ratio SU-8 microstructures with and without megasonic development," High Aspect Ratio Micro Structures Technology Workshop (HARMST) 2003.
20. J. Williams and W. Wang, "Microfabrication of an Electromagnetic Power Micro-Relay Using SU-8 Based UV-LIGA Technology" High Aspect Ratio Micro Structures Technology Workshop (HARMST) 2003.