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Andrew Sarangan

Professor; Director of Nanofabrication Laboratory; Associate Chair

Full-Time Faculty


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


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

  • Joshua Duran and Andrew M. Sarangan. “Schottky-Barrier Photodiode Internal Quantum Efficiency
    Dependence on Nickel Silicide Film Thickness”. IEEE Photonics Journal, pages 1–1, 2019.
  • Pengfei Guo, Joshua A. Burrow, Gary A. Sevison, Aditya Sood, Mehdi Asheghi, Joshua R.
    Hendrickson, Kenneth E. Goodson, Imad Agha, and Andrew Sarangan. “Improving the
    performance of Ge2Sb2Te5 materials via nickel doping: Towards RF-compatible phase-change
    devices”. Applied Physics Letters, 113(17):171903, 2018. doi:10.1063/1.5053713
  • Andrew Sarangan, Josh Duran, Vladimir Vasilyev, Nicholaos Limberopoulos, Ilya Vitebskiy, and
    Igor Anisimov. “Broadband Reflective Optical Limiter Using GST Phase Change Material”. IEEE
    Photonics Journal, 10(2):1–9, 2018. doi:10.1109/JPHOT.2018.2796448
  • Chuan Ni, Jie Jia, Matthew Howard, Keigo Hirakawa, and Andrew Sarangan. “Single-shot
    multispectral imager using spatially multiplexed fourier spectral filters”. J. Opt. Soc. Am. B,
    35(5):1072–1079, 2018. doi:10.1364/JOSAB.35.001072
  • R. Yahiaoui, J. A. Burrow, S. M. Mekonen, A. Sarangan, J. Mathews, I. Agha, and T. A. Searles.
    “Electromagnetically induced transparency control in terahertz metasurfaces based on bright- bright
    mode coupling”. Physical Review B, 97(15):155403, 2018. doi:10.1103/PhysRevB.97.155403
  • Andrew Sarangan. “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,
    2018. doi:10.1364/JOSAB.35.002294
  • R. Yahiaoui, J. A. Burrow, S. M. Mekonen, A. Sarangan, J. Mathews, I. Agha, and T. A. Searles.
    “Electromagnetically induced transparency control in terahertz metasurfaces based on bright-
    bright mode coupling”. Physical Review B, 97(15):155403, 2018.
  • Joshua A. Burrow, Riad Yahiaoui, Andrew Sarangan, Imad Agha, Jay Mathews, and Thomas A.
    Searles. “Polarization-dependent electromagnetic responses of ultrathin and highly flexible
    asymmetric terahertz metasurfaces”. Optics Express, 25(26):32540, 2017.
  • Zhengning Gao, Mallik M. R. Hussain, Domenico de Ceglia, Maria A. Vincenti, Andrew
    Sarangan, Imad Agha, Michael Scalora, Joseph W. Haus, and Parag Banerjee. “Unraveling
    delocalized electrons in metal induced gap states from second harmonics”. Applied Physics
    Letters, 111(16):161601, 2017. doi:10.1063/1.4996893
  • Joshua M. Duran and Andrew Sarangan. “Fabrication of ultrahigh aspect ratio silicon
    nanostructures using self-assembled gold metal-assisted chemical etching”. Journal of Mi-
    cro/Nanolithography, MEMS, and MOEMS, 16(1):014502, 2017.
  • Chenhao Wan, David Lombardo, Andrew Sarangan, and Qiwen Zhan. “High efficiency
    geometric-phase polarization fan-out grating on silicon”. Optics Express, 25(20):24559, 2017.
  • Diego Garcia Mina, Joseph W. Haus, Andy Chong, Ankita Khanolkar, Andrew Sarangan, and
    Karolyn Hansen. “Bi-tapered fiber sensor using visible to near infrared light”. Sensors and
    Actuators A: Physical, 263:285–290, 2017. doi:10.1016/j.sna.2017.06.017
  • Alessandro Belardini, Marco Centini, Grigore Leahu, David C. Hooper, Roberto Li Voti,
    Eugenio Fazio, Joseph W. Haus, Andrew Sarangan, Ventsislav K. Valev, and Concita Sibilia.
    “Chiral light intrinsically couples to extrinsic/pseudo-chiral metasurfaces made of tilted gold
    nanowires”. Scientific Reports, 6(1):31796, 2016. doi:10.1038/srep31796
  • Jie Jia, Chuan Ni, Andrew Sarangan, and Keigo Hirakawa. “Fourier multispectral imaging”.
    Optics Express, 23(17):22649, 2015. doi:10.1364/OE.23.022649
  • Junxin Wang, Yun Zhao, Imad Agha, and Andrew M. Sarangan. “SU-8 nanoimprint fabrication of
    wire-grid polarizers using deep-UV interference lithography”. Optics Letters, 40(19):4396, 2015.
  • Michael Benson, Piyush Shah, Michael Marciniak, Andrew Sarangan, and Augustine Urbas.
    “Optical Characterization of Silver Nanorod Thin Films Grown Using Oblique Angle
    Deposition”. Journal of Nanomaterials, 2014:1–8, 2014. doi:10.1155/2014/694982
  • Long Wang, Peter E. Powers, Andrew Sarangan, and Joseph W. Haus. “Image revivals in multi-
    mode optical fibers with periodic multiple sub-apertures”. Optics Communications,
    326:57–63, 2014. doi:10.1016/j.optcom.2014.04.02
  • Emily M. Fehrman Cory, Roberto S. Aga, Jack P. Lombardi, Carrie M. Bartsch, Andrew
    Sarangan, and Emily M. Heckman. “Nanoimprint lithography of deoxyribonucleic acid
    biopolymer films”. Journal of Micro/Nanolithography, MEMS, and MOEMS, 12(4):040501,
    2013. doi:10.1117/1.JMM.12.4.040501
  • Susan Derenko, Ren´e Kullock, Zhi Wu, Andrew Sarangan, Christiane Schuster, Lukas M. Eng,
    and Thomas H¨artling. “Local photochemical plasmon mode tuning in metal nanoparticle
    arrays”. Optical Materials Express, 3(6):794, 2013. doi:10.1364/OME.3.000794
  • Piyush Shah, Dongquan Ju, Xiaoxu Niu, and Andrew M. Sarangan. “Vapor Phase Sensing Using
    Metal Nanorod Thin Films Grown by Cryogenic Oblique Angle Deposition”. Journal of Sensors,
    2013:1–6, 2013. doi:10.1155/2013/823041
  • Piyush J. Shah, Zhi Wu, and Andrew M. Sarangan. “Effects of CO2 critical point drying on
    nanostructured SiO2 thin films after liquid exposure”. Thin Solid Films, 527:344–348, 2013.
  • Piyush J Shah, Xiaoxu Niu, and Andrew M Sarangan. Journal of Nanoscience Letters “High
    aspect ratio silver nanorod thin films grown at cryogenic substrate temperature”. 2012
  • G. Nehmetallah, R. Aylo, P. Powers, A. Sarangan, J. Gao, H. Li, A. Achari, and P. P. Banerjee.
    “Co-sputtered SiC + Ag nanomixtures as visible wavelength negative index metamaterials”.
    Optics Express, 20(7):7095, 2012. doi:10.1364/OE.20.007095