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Andrew Sarangan

Department Chair; Professor; Director of Nanofabrication Laboratory

Full-Time Faculty

School of Engineering: Department of Electro-Optics and Photonics


Email: Andrew Sarangan
Phone: 937-229-3190 or 937-229-1037
Office: Fitz Hall 572A; Lab: SC 037
Website: Visit Site

Additional Links

Google Scholar


  • Ph.D., University of Waterloo, Canada
  • M.A.Sc., University of Waterloo, Canada
  • B.A.Sc., University of Waterloo, Canada

Licenses, Certifications and Credentials

  • P.E. (Ohio)

Selected Honors and Awards

  • 2018 Vision Award for Excellence, School of Engineering, University of Dayton
  • 2013 Faculty Excellence in Teaching Awards – Southwestern Ohio Council for Higher Education
  • 2013 Affiliate Societies Council Outstanding Scientists & Engineers Award – Research category, Dayton, OH
  • 2008 Sigma Xi Noland Award for Excellence in Research, University of Dayton

Research Interests

  • Nanolithography and semiconductor nano-fabrication
  • Optical thin films
  • Infrared photodetectors
  • Phase change materials
  • Computational electromagnetics

Courses Developed/Taught

  • Nano Fabrication EOP533/ECE580
  • Optical Thin Films EOP532  
  • Integrated Optics EOP604/ECE674
  • Quantum Electronics EOP626/ECE676
  • Electro-Optic Devices and Systems EOP506/ECE573
  • Advanced Nanotechnology EGR411
  • Principles of Nanotechnology EGR311
  • Electrical Circuits EGR203

Professional Activities

  • Senior Member, IEEE, Photonics Society & Electron Devices Society
  • Senior Member – SPIE

Selected Publications

  • Duran, J. & Sarangan, A. M. (2019). Schottky-barrier photodiode internal quantum efficiency dependence on nickel silicide film thickness. IEEE Photonics Journal, 1–1. doi:10.1109/JPHOT.2018.2886556
  • Guo, P., Burrow, J. A., Sevison, G. A., Sood, A., Asheghi, M., Hendrickson, J. R., Goodson, K. E., Agha, I., & Sarangan, A. (2018). Improving the performance of Ge2Sb2Te5 materials via nickel doping: Towards RF-compatible phase-change devices. Applied Physics Letters, 113(17), 171903.  doi:10.1063/1.5053713
  • Sarangan, A., Duran, J., Vasilyev, V., Limberopoulos, N., Vitebskiy, I., & Anisimov, I. (2018). Broadband reflective optical limiter using GST phase change material. IEEE Photonics Journal, 10(2), 1–9.  doi:10.1109/JPHOT.2018.2796448
  • Ni, C., Jia, J., Howard, M., Hirakawa, K., & Sarangan, A. (2018). Single-shot multispectral imager using spatially multiplexed Fourier spectral filters. J. Opt. Soc. Am. B, 35(5), 1072–1079. doi:10.1364/JOSAB.35.001072
  • Yahiaoui, R., Burrow, J. A., Mekonen, S. M., Sarangan, A., Mathews, J., Agha, I., & Searles, T. A. (2018). Electromagnetically induced transparency control in terahertz metasurfaces based on bright-bright mode coupling. Physical Review B, 97(15), 155403. doi:10.1103/PhysRevB.97.155403
  • Sarangan, A. (2018). Design of metal-dielectric resonant-cavity thin-film structures using the effective reflectance index method. Journal of the Optical Society of America B, 35(9), 2294.  doi:10.1364/JOSAB.35.002294
  • Burrow, J. A., Yahiaoui, R., Sarangan, A., Agha, I., Mathews, J., & Searles, T. A. (2017). Polarization-dependent electromagnetic responses of ultrathin and highly flexible asymmetric terahertz metasurfaces. Optics Express, 25(26), 32540. doi:10.1364/OE.25.032540
  • Gao, Z., Hussain, M. M. R., de Ceglia, D., Vincenti,  M. A. Sarangan, A., Agha, I., Scalora, M., Haus, J. W., & Banerjee, P. (2017). Unraveling delocalized electrons in metal induced gap states from second harmonics. Applied Physics Letters, 111(16), 161601. doi:10.1063/1.4996893
  • Duran, J. M., & Sarangan, A. (2017). Fabrication of ultrahigh aspect ratio silicon nanostructures using self-assembled gold metal-assisted chemical etching. Journal of Micro/Nanolithography, MEMS, and MOEMS, 16(1), 014502. doi: 10.1117/1.JMM.16.1.014502
  • Wan, C., Lombardo, D., Sarangan, A., & Zhan, Q. (2017). High efficiency geometric-phase polarization fan-out grating on silicon. Optics Express, 25(20), 24559. doi:10.1364/OE.25.024559
  • Mina, D. G., Haus, J. W., Chong, A., Khanolkar, A., Sarangan, A., & Hansen, K. (2017). Bi-tapered fiber sensor using visible to near infrared light. Sensors and Actuators A: Physical, 263, 285–290.  doi:10.1016/j.sna.2017.06.017
  • Belardini, A., Centini, M., Leahu, G., Hooper, D. C., Li Voti, R., Fazio, E., Haus, J. W., Sarangan, A., Valev, V. K., & Sibilia, C. (2016). Chiral light intrinsically couples to extrinsic/pseudo-chiral metasurfaces made of tilted gold nanowires. Scientific Reports, 6(1), 31796.  doi:10.1038/srep31796
  • Jia, J., Ni, C., Sarangan, A., & Hirakawa, K. (2015). Fourier multispectral imaging. Optics Express, 23(17), 22649.  doi:10.1364/OE.23.022649
  • Wang, J., Zhao, Y., Agha, I., & Sarangan, A. M. (2015). SU-8 nanoimprint fabrication of wire-grid polarizers using deep-UV interference lithography. Optics Letters, 40(19), 4396.  doi:10.1364/OL.40.004396
  • Benson, M., Shah, P., Marciniak, M., Sarangan, A., & Urbas, A. (2014). Optical characterization of silver nanorod thin films grown using oblique angle deposition. Journal of Nanomaterials, 1–8.  doi:10.1155/2014/694982
  • Wang, L., Powers, P. E., Sarangan, A., & Haus, J. W. (2014). Image revivals in multi-mode optical fibers with periodic multiple sub-apertures. Optics Communications, 326, 57–63. doi:10.1016/j.optcom.2014.04.02
  • Fehrman Cory, E. M., Aga, R. S., Lombardi, J. P., Bartsch, C. M., Sarangan, A., & Heckman, E. M. (2013). Nanoimprint lithography of deoxyribonucleic acid biopolymer films. Journal of Micro/Nanolithography, MEMS, and MOEMS, 12(4), 040501. doi:10.1117/1.JMM.12.4.040501
  • Derenko, S., Kullock, R., Wu, Z., Sarangan, A., Schuster, C., Eng, L. M., & Hartling, T. (2013). Local photochemical plasmon mode tuning in metal nanoparticle arrays. Optical Materials Express, 3(6), 794.  doi:10.1364/OME.3.000794
  • Shah, P., Ju, D., Niu, X., & Sarangan, A. M. (2013). Vapor phase sensing using metal nanorod thin films grown by cryogenic oblique angle deposition. Journal of Sensors, 1–6. doi:10.1155/2013/823041
  • Shah, P. J., Wu, Z., & Sarangan, A. M. (2013). Effects of CO2 critical point drying on nanostructured SiO2 thin films after liquid exposure. Thin Solid Films, 527, 344–348. doi:10.1016/j.tsf.2012.10.057
  • Shah, P. J., Niu, X., & Sarangan, A. M. (2012). High aspect ratio silver nanorod thin films grown at cryogenic substrate temperature. Journal of Nanoscience Letters.
  • Nehmetallah, G., Aylo, R., Powers, P., Sarangan, A., Gao, J., Li, H., Achari, A., & Banerjee, P. P. (2012). Co-sputtered SiC + Ag nanomixtures as visible wavelength negative index metamaterials. Optics Express, 20(7), 7095.  doi:10.1364/OE.20.007095
  • Gao, J., Sarangan, A. M., & Zhan, Q. (2012). Polarization multiplexed fluorescence enhancer using a pixelated one-dimensional photonic band gap structure. Optics Letters, 37(13), 2640.  doi:10.1364/OL.37.002640
  • Niu, X., Murray, P. T., & Sarangan, A. (2012). Synthesis of Fe–Ni bimetallic nanoparticles from pixel target ablation: Plume dynamics and surface characterization. Journal of Nanoparticle Research, 14(8), 1017. doi:10.1007/s11051-012-1017-z
  • Smith, R. C. G., Sarangan, A. M., Jiang, Z., & Marciante, J. R. (2012). Direct measurement of bend-induced mode deformation in large-mode-area fibers. Optics Express, 20(4), 4436. doi:10.1364/OE.20.004436
  • Gao, J., Zhan, Q., & Sarangan, A. M. (2011). High-index, low-loss gallium phosphide thin films fabricated by radio frequency magnetron sputtering. Thin Solid Films, 519(16), 5424–5428. doi:10.1016/j.tsf.2011.02.068
  • Katte, N., Haus, J. W., Powers, P., Sarangan, A., Gao, J., & Scalora, M. (2011). Third-order nonlinear optical properties of metallodielectric stacks. Journal of the Optical Society of America B, 28(9), 2277.  doi:10.1364/JOSAB.28.002277
  • Gao, J., Sarangan, A. M., & Zhan, Q. (2011). Experimental confirmation of strong fluorescence enhancement using one-dimensional GaP/SiO2 photonic band gap structure. Optical Materials Express, 1(7), 1216. doi:10.1364/OME.1.001216
  • Sun, L., & Sarangan, A. (2011). Fabrication of sloped sidewalls by inductively coupled plasma etching for silicon micro-optic structures. Journal of Micro/Nanolithography, MEMS, and MOEMS, 10(2), 023006. doi:10.1117/1.3574136
  • Cooney, A. T., & Sarangan, A. M. (2010). Real-time modeling of quantum cascade laser operation using linear combinations of intrawell properties. Journal of Computational Electronics, 9(1):8–15. doi:10.1007/s10825-009-0290-2