Dennis Alexander

Dennis Alexander.

Kingery Engineering Professor - Emeritus

Electrical and Computer Engineering

E417 Nebraska Hall
Lincoln, NE 68588
(402) 472-3091
dalexander1@unl.edu
Faculty Profile
Education
  • Ph.D., Kansas State University, Manhattan, Kan., 1976
  • M.Sc., Kansas State University, Manhattan, Kan., 1973
  • B.Sc., Kansas State University, Manhattan, Kan., 1971

Research Interests
  • Ultrafast lasers and their applications
  • Femtosecond ultrashort pulse propagation
  • Generation of nanostructures as well as the use of femtosecond laser for surface structuring of materials
  • Production of nanoparticles and their optical properties on surfaces
  • All optical switches for next generation all optical networks
  • NanoPhotonic devices at quantum level for all optical communication devices

Selected Publications
  • A. Hamza, J. Deogun and D. Alexander, Free Space Optical Multicast Crossbar, IEEE/OSA Journal of Optical Communications and Networking (JOCN), vol.8, no.1, pp.1-10, 2016.
  • A. Hamza, J. Deogun and D. Alexander, Wireless Communication in Data Centers: A Survey, IEEE Communications Surveys & Tutorials, vol. 18, no. 3, pp.1572-1595, 2016.
  • A. Hamza, J. Deogun and D. Alexander, New Class of Rearrangeable Non-Blocking Multicast Free Space Optical Switches, IEEE/OSA Journal of Optical Communications and Networking (JOCN), vol.8, no.8, pp.569-581, 2016.
  • Tsubaki, A., Koten, M., Lucis, M., Zuhlke, C., Ianno, N., Shield, J., Alexander, D. "Formation of aggregated nanoparticle spheres through femtosecond laser surface processing." Applied Surface Science, Volume 419, 15 October 2017, Pages 778–787
  • Peng, E., Bell, R., Zuhlke, C. A., Wang, M., Alexander, D. R., Gogos, G. and Shield, J. E., “Growth Mechanisms of Multiscale, Mound-Like Surface Structures on Titanium by Femtosecond Laser Processing,” Journal of Applied Physics, 122, 133108, 2017.
  • Peng, E., Tsubaki, A., Zuhlke, C. A., Wang, M., Bell, R., Lucis, M. J., Anderson, T. P., Alexander, D. R., Gogos, G., Shield, J. E., “Micro/Nanostructures Formation by Femtosecond Laser Surface Processing on Amorphous and Polycrystalline Ni60Nb40,” Applied Surface Science, 28, 1170-1176, 2017.
  • Kruse, C., Lucis, M., Shield, J., Anderson, T., Zuhlke, C., Alexander, D., Gogos, G., and Ndao, S. “Effects of Femtosecond Laser Surface Processed Nanoparticle Layers on Pool Boiling Heat Transfer Performance,” Journal of Thermal Science and Engineering Applications, Accepted for publication, 2017.
  • Kruse, C., Tsubaki, A., Zuhlke, C., Anderson, T., Alexander, D., Gogos, G., Ndao, S., “Secondary Pool Boiling Effects,” Applied Physics Letters, 108, 051602, 2016. http://dx.doi.org/10.1063/1.4941081
  • Hassebrook, A., Kruse, C., Wilson, C., Anderson, T., Zuhlke, C., Alexander, D., Gogos, G., Ndao, S., “Effects of Droplet Diameter and Fluid Properties on theLeidenfrost Temperature of Polished and Micro/Nanostructured Surfaces,” Journal of Heat Transfer, 138(5), 051501, 2016. doi: 10.1115/1.4032291
  • Kruse, C. M., Anderson, T., Wilson, C., Zuhlke, C., Alexander, D., Gogos, G., & Ndao, S. “Enhanced pool-boiling heat transfer and critical heat flux on femtosecond laser processed stainless steel surfaces.” International Journal of Heat and Mass Transfer, 82, 109–116, 2015.
  • Kruse, C. M., Somanas, I., Anderson, T. P., Wilson, C., Zuhlke, C. A., Alexander, D. R., Gogos, G., and Ndao, S., “Self-Propelled Droplets from Bioinspired Directional Microstructured Surfaces,” Microfluidics and Nanofluidics, 18:1417, 2015. DOI 10.1007/s10404-014-1540-6.
  • Zuhlke, C. A., Bruce III, J., Anderson, T. P., Alexander, D. R., Parigger, C. G. “Fundamental understanding of the dependence of the LIBS signal strength on the complex focusing dynamics of femtosecond laser pulses either side of focus,” Applied Spectroscopy, 68(9), PP. 1021-1029, September 2014. 168.
  • Zuhlke, C. A., Anderson, T. P., and Alexander, D. R., “Comparison of the structural and chemical composition of two unique micro/nanostructures produced by femtosecond laser interactions on nickel,” Applied Physics Letters, 103(12), 121603, 2013.
  • Zuhlke, C. A., Anderson, T. P., and Alexander, D. R., “Fundamentals of layered nanoparticle covered pyramidal structures formed on nickel during femtosecond laser surface interactions,” Applied Surface Science, 21(7), 8460–73, 2013.