Ajay Nahata portrait
  • Professor, Elect & Computer Engineering
  • Director, University of Utah MRSEC
  • Associate Dean for Academics College of Engineering
  • Adjunct Professor, Physics And Astronomy

Research Keywords

  • Ultrafast optics
  • Optics
  • Nonlinear Optics
  • Nanofabrication
  • Microfabrication
  • Materials Engineering

Presentations

  • T. Matsui, A. Agrawal, A. Nahata and Z.V. Vardeny, “Terahertz transmission through quasiperiodic arrays of subwavelength apertures,” APS March Meeting (2007). Other, Presented, 2007.
  • A. Agrawal, T. Matsui, Z.V. Vardeny, and A. Nahata “Terahertz transmission through aperiodic arrays of subwavelength apertures” APS March Meeting (2007). Other, Presented, 2007.
  • T. Matsui, Z.V. Vardeny, A. Agrawal, A. Nahata and R. Menon, “Anomalous transmission through a periodic subwavelength hole array in heavily doped conducting polymer films,” APS March Meeting (2006). Other, Presented, 2006.
  • B. Gupta, S. Pandey, A. Paulsen and A. Nahata, “Terahertz plasmonics using unconventional metals,” Frontiers of Terahertz Technology – Hamamatsu, Japan (September 2015). Invited Talk/Keynote, Presented, 09/2015.
  • J. Wang, S. Liu, S. Guruswamy and A. Nahata, “Free-standing terahertz metamaterials fabricated via injection molding” 6th International Conference on Metamaterials, Photonic Crystals and Plasmonics (META '15) – New York, New York (August 2015). Invited Talk/Keynote, Presented, 08/2015.
  • S. Liu, X. Shou and A. Nahata, “Coherent detection of multiband terahertz radiation using a surface plasmon-polariton based photoconductive antenna,” SPIE Annual Meeting - Plasmonics: Metallic Nanostructures and Their Optical Properties X, paper 8457-84 (2012). Conference Paper, Refereed, Presented, 08/2012.
  • S. Liu, T. D. Nguyen, Z. V. Vardeny, and A. Nahata, “Enhanced THz transmission through periodic subwavelength aperture arrays fabricated in graphite,” SPIE Annual Meeting - Plasmonics: Metallic Nanostructures and Their Optical Properties X, paper 8457-54 (2012). Conference Paper, Refereed, Presented, 08/2012.
  • J. Wang, S. Liu, and A. Nahata, “Reversibly deformable and tunable liquid-metal based plasmonics,” SPIE Annual Meeting - Plasmonics: Metallic Nanostructures and Their Optical Properties X, paper 8457-121 (2012). Conference Paper, Refereed, Presented, 08/2012.
  • S. Liu, X. Shou, A. Agrawal, and A. Nahata, “Generation and Coherent Detection of Broadband Terahertz Radiation in Phase-Matched Waveguides,” Optical Sensors, paper SW4C1 (2012). Conference Paper, Refereed, Presented, 07/2012.
  • S. Liu, X. Shou and A. Nahata, “Coherent Detection of Multiband Terahertz Radiation Using a Surface Plasmon-Polariton Based Photoconductive Antenna,” Conference on Lasers and Electro-optics (CLEO), paper CM2L7 (2012). Conference Paper, Refereed, Presented, 05/2012.
  • S. Pandey and A. Nahata, “Direct Measurement of Surface Plasmon Properties on Different Metals using Terahertz Time-Domain Spectroscopy,” Conference on Lasers and Electro-optics (CLEO), paper JW2A53 (2012). Conference Paper, Refereed, Presented, 05/2012.
  • S. Liu, A. Agrawal, X. Shou and A. Nahata, “Phase-Matched Microstrip Waveguides for Generation and Coherent Detection of Broadband Terahertz Radiation,” Conference on Lasers and Electro-optics (CLEO), paper CM4J1 (2012). Conference Paper, Refereed, Presented, 05/2012.
  • S. Liu, T.D. Nguyen, Z.V. Vardeny and A. Nahata, “Enhanced THz Transmission Through Periodic Subwavelength Aperture Arrays Fabricated in Graphite,” Conference on Lasers and Electro-optics (CLEO), paper JW2A52 (2012). Conference Paper, Refereed, Presented, 05/2012.
  • J. Wang, S. Liu, and A. Nahata, “"Mechanically Stretchable and Reversibly Deformable Liquid Metal-Based Plasmonics," Conference on Lasers and Electro-optics (CLEO), paper CTuF2 (2012). Conference Paper, Refereed, Presented, 05/2012.
  • G. Kumar, W. Zhu, A. Cui and A. Nahata, “Using plasmonic metamaterials to create terahertz guided-wave circuits,” 13th European Microwave Week 2010– Paris, France (2010). Invited Talk/Keynote, Presented, 06/2010.
  • Tho Duc Nguyen, Z. Valy Vardeny and Ajay Nahata, “THz Time Domain Spectroscopy Studies of a Graphite Film and Perforated Graphite Hole Arrays,” APS March Meeting (2010). Other, Presented, 03/2010.
  • G. Kumar, W. Zhu, A. Cui and A. Nahata, “Planar terahertz guided-wave devices using plasmonic metamaterials,” 2nd International Conference on International Conference on Metamaterials, Photonic Crystals and Plasmonics (META'10) – Cairo, Egypt (2010). Invited Talk/Keynote, Presented, 02/2010.
  • A. Agrawal, T. Matsui, W. Zhu, Z.V. Vardeny, and A. Nahata “Using plasmonic lattices to examine the role of disorder,” International Workshop on Terahertz Technology – Osaka, Japan (2009). Invited Talk/Keynote, Presented, 2009.
  • A. Agrawal, T. Nguyen, Z.V. Vardeny, and A. Nahata “Examining fundamental properties of aperiodic geometries using plasmonic metamaterials,” 12th International Symposium on Microwave and Optical Technology (ISMOT)- New Delhi, India (2009). Invited Talk/Keynote, Presented, 2009.
  • W. Zhu, A. Agrawal, and A. Nahata, “Planar plasmonic guided-wave devices,” SPIE Photonics West (2009). Invited Talk/Keynote, Presented, 2009.
  • A.K. Agrawal, T. Matsui, Z.V. Vardeny, and A. Nahata, “Enhanced transmission through subwavelength aperture arrays with short range order,” Conference on Lasers and Electro-optics (CLEO), paper CMD4 (2008). Conference Paper, Other, 2008.
  • A.K. Agrawal, Z.V. Vardeny, and Ajay Nahata, “Engineering the dielectric function of subwavelength aperture arrays,” OSA Plasmonics and Metamaterials (META) Topical Meeting, paper MWB4 (2008). Conference Paper, Other, 2008.
  • W. Zhu, A. Agrawal, A. Nahata, “Planar Plasmonic Terahertz Guided-Wave Devices,” OSA Plasmonics and Metamaterials (META) Topical Meeting, paper JWD33 (2008). Conference Paper, Other, 2008.
  • A.K. Agrawal, Z.V. Vardeny, and Ajay Nahata, “Engineering the dielectric function of subwavelength aperture arrays,” European Optical Society Topical Meeting on Terahertz - Science and 
Technology (2008). Conference Paper, Other, 2008.
  • W. Zhu, A.K. Agrawal, A. Nahata, “Measurement of the Gouy Phase Shift for Surface Plasmon Polaritons,” Conference on Lasers and Electro-optics (CLEO), paper CMD7 (2008). Conference Paper, Other, 2008.
  • A.K. Agrawal, T. Matsui, Z.V. Vardeny, and A. Nahata, “Enhanced terahertz transmission through subwavelength aperture arrays exhibiting short range order,” OSA Plasmonics and Metamaterials (META) Topical Meeting, paper JWD23 (2008). Conference Paper, Other, 2008.
  • W. Zhu, A. Agrawal, A. Nahata, and H. Cao, “Generation of Broadband Terahertz Surface Plasmons on Cylindrical Metal Wires via Optical Rectification,” OSA Plasmonics and Metamaterials (META) Topical Meeting, paper MMD4 (2008). Conference Paper, Other, 2008.
  • X. Shou, A.K. Agrawal, A. Nahata, “Efficient Broadband Terahertz Microstrip Waveguide,” Conference on Lasers and Electro-optics (CLEO), paper CMM5 (2008). Conference Paper, Other, 2008.
  • Z.V. Vardeny, M. Diwekar, A. Agrawal, and A. Nahata, “Optical studies of plasmonic metamaterials,” SPIE Annual Meeting, Paper # 7033-49 (2008). Invited Talk/Keynote, Presented, 2008.
  • A. Agrawal, T. Matsui, Z.V. Vardeny, and A. Nahata, “Characterization of sub-wavelength apertures using terahertz spectroscopy,” IEEE Lasers and Electro-optics Society Annual Meeting (2008). Invited Talk/Keynote, Presented, 2008.
  • W. Zhu, A. Agrawal, and A. Nahata, “Planar plasmonic guided-wave devices,” 2nd International Congress on Advanced Electromagnetic Materials in Microwaves and Optics - Pamplona Spain (2008). Invited Talk/Keynote, Presented, 2008.
  • A. Agrawal, Z. V. Vardeny and A. Nahata, “Terahertz plasmonic metamaterials,” MRS March Meeting, (2008). Invited Talk/Keynote, Presented, 2008.
  • T. Matsui, A. Agrawal, A. Nahata and Z.V. Vardeny, “Resonantly enhanced terahertz transmission using quasiperiodic arrays of subwavelength apertures” Optical Terahertz Science and Technology Conference (2007). Conference Paper, Other, 2007.
  • W. Zhu, A. Agrawal, and A. Nahata, “Direct measurement of the Gouy phase shift for surface plasmon-polaritons,” paper # FWO4, Optical Society of America Annual Meeting (2007). Conference Paper, Other, 2007.
  • A. Agrawal, T. Matsui, Z.V. Vardeny, and A. Nahata “Resonantly enhanced terahertz transmission using aperiodic arrays of subwavelength apertures” Optical Terahertz Science and Technology Conference (2007). Conference Paper, Other, 2007.
  • A. Agrawal and A. Nahata “Coupling multicycle terahertz pulses onto a metal wire waveguide using a subwavelength coaxial aperture” Optical Terahertz Science and Technology Conference (2007). Conference Paper, Other, 2007.
  • T. Matsui, A. Agrawal, A. Nahata and Z.V. Vardeny, “Transmission resonances through quasiperiodic hole arrays,” Annual Meeting of the Japan Society of Applied Physics (2007). Conference Paper, Other, 2007.
  • T. Matsui, Z.V. Vardeny, A. Agrawal, A. Nahata and R. Menon, “Molecular plasmonics using heavily doped conducting polymer films,” Fourth International Conference on Molecular Electronics and Bioelectronics (2007). Conference Paper, Other, 2007.
  • A. Agrawal, T. Matsui, Z.V. Vardeny, and A. Nahata “Transmission resonances using aperiodic arrays of subwavelength apertures” Surface Plasmon Polariton 3 – SPP3 (2007). Conference Paper, Other, 2007.
  • W. Zhu, and A. Nahata, “Characterization of terahertz surface plasmons on structured metal surfaces,” paper # FWO4, Optical Society of America Annual Meeting (2007). Conference Paper, Other, 2007.
  • A. Agrawal, T. Matsui, Z.V. Vardeny, and A. Nahata “Resonantly enhanced terahertz transmission using aperiodic arrays of subwavelength apertures” Conference on Lasers and Electro-optics (CLEO) (2007). Invited Talk/Keynote, Presented, 2007.
  • M. Diwekar, T. Matsui, A. Agrawal, A. Nahata, and Z.V. Vardeny “Thermal emission properties of periodically structured metals” Joint Conference on Information Science (2007). Invited Talk/Keynote, Presented, 2007.
  • A. Agrawal, T. Matsui, Z.V. Vardeny, and A. Nahata “Terahertz transmission properties of aperiodic arrays” Joint Conference on Information Science (2007). Invited Talk/Keynote, Presented, 2007.
  • A. Agrawal, T. Matsui, Z.V. Vardeny, and A. Nahata “Terahertz Plasmonics Using Structured Metal Films,” Terahertz Science – (The Royal Netherlands Academy of Arts and Sciences, Amsterdam) (2007). Invited Talk/Keynote, Presented, 2007.
  • T. Matsui, A. Agrawal, A. Nahata and Z.V. Vardeny, “Terahertz transmission through quasiperiodic arrays of subwavelength apertures,” 2007 International Symposium on Organic and Inorganic Electronic Materials and Related Nanotechnologies (EM-NANO) (2007). Invited Talk/Keynote, Presented, 2007.
  • W. Zhu, A. Agrawal, and A. Nahata, “Developing a THz Lab on a Chip using surface plasmon-polaritons,” Terahertz and Optical Plasmonic Science Workshop (TOPS) – Seoul, Korea, (2007). Invited Talk/Keynote, Presented, 2007.
  • A. Agrawal, W. Zhu, X. Shou, and A. Nahata, “Terahertz transmission properties of split ring resonator arrays,” paper #FThF1, Optical Society of America Annual Meeting (2006). Conference Paper, Presented, 2006.
  • A. Agrawal, H. Cao and A. Nahata, “Terahertz pulse shaping using structured metal films,” Conference on Lasers and Electro-optics (CLEO), paper CMI3 (2006). Conference Paper, Presented, 2006.
  • A. Agrawal, W. Zhu, X. Shou, and A. Nahata, “Terahertz transmission properties of metamaterials composed of split ring resonators and wires,” Conference on Lasers and Electro-optics (CLEO), paper CMI6 (2006). Conference Paper, Presented, 2006.
  • T. Matsui, Z.V. Vardeny, A. Agrawal, A. Nahata and R. Menon, “Anomalous transmission through heavily-doped conducting polymer films perforated with a two-dimensional subwavelength hole array,” Annual Meeting of the Japan Society of Applied Physics (2006). Conference Paper, Presented, 2006.
  • A. Agrawal, H. Cao, and A. Nahata, “Terahertz transmission through a subwavelength aperture in a structured metal film and its application to pulse shaping,” MRS Spring Meeting (2006). Conference Paper, Presented, 2006.
  • T. Matsui, Z.V. Vardeny, A. Agrawal, A. Nahata and R. Menon, “Anomalous transmission through a periodic subwavelength hole array in heavily doped conducting polymer films,” MRS Spring Meeting (2006). Conference Paper, Presented, 2006.
  • T. Matsui, A. Agrawal, A. Nahata and Z.V. Vardeny, “Anomalous transmission through aperiodic hole arrays” SPIE Optics and Photonics (2006). Conference Paper, Presented, 2006.
  • T. Matsui, A. Agrawal, A. Nahata, R. Menon and Z.V. Vardeny, “Terahertz Time-Domain Spectroscopy Studies of Plasmonic Periodic and Quasiperiodic Lattices,” The 7th International Conference on the Electrical, Transport and Optical Properties of Inhomogeneous Media - ETOPIM 7 (2006). Invited Talk/Keynote, Presented, 2006.
  • T. Matsui, Z.V. Vardeny, A. Agrawal, A. Nahata and R. Menon, “Tunable Plasmonic Photonic Crystals Using Heavily-Doped Organic Conducting Polymers,” International Conference on Science and Technology of Synthetic Metals, ICSM2006 (2006). Invited Talk/Keynote, Presented, 2006.
  • A. Agrawal, H. Cao, and A. Nahata, “Enhanced transmission through a single subwavelength aperture and its application to arbitrary terahertz waveform generation,” The 3rd International Symposium on System Construction of Global Network Oriented Information Electronics (2006). Invited Talk/Keynote, Presented, 2006.

Research Groups

  • Divya Pande, Visiting Student. Electrical and Computer Engineering. 08/01/2016 - present. Awards/Scholarships/Stipends: Funding through the National Science Foundation.
  • Shashank Pandey, Graduate Student. Electrical and Computer Engineering. 08/2009 - present. Awards/Scholarships/Stipends: Funding through 1. National Science Foundation 2. University of Utah Graduate Research Fellowship 3. SPIE (the international society for optics and photonics).

Publications

  • J. Wang, S. Liu, and A. Nahata, "Reconfigurable plasmonic devices using liquid metals," Opt. Express 20, 12119-12126 (2012). Published, 04/2012.
  • J. Wang, S. Liu, Z.V. Vardeny and A. Nahata, “Liquid metal-based plasmonics,” Opt. Express 20, 2346-2353 (2012). Published, 01/2012.
  • W. Zhu, A. Agrawal, A. Cui, G. Kumar and A. Nahata, “Engineering the propagation properties of planar plasmonic terahertz waveguides,” (INVITED) IEEE J. Select. Top. Quant. Electron. 17, 146-153 (2011). Published, 02/2011.
  • Z.V. Vardeny and A. Nahata, “Photonic quasicrystals: Disorder-enhanced light transport,” Nature Photonics 5, 453–454 (2011). Published, 08/2011.
  • S. Liu, X. Shou and A. Nahata, “Coherent detection of multiband terahertz radiation using surface plasmon-polariton based photoconductive antennas,” IEEE Trans. Terahertz Science and Technology 1, 412-415 (2011). Published, 03/2011.
  • T.D. Nguyen, Z.V. Vardeny and A. Nahata, "Concentration of terahertz radiation through a conically tapered aperture," Opt. Express 18, 25441-25448 (2010). Published, 11/2010.
  • S. Pandey, G. Kumar, and A. Nahata, "Slot waveguide-based splitters for broadband terahertz radiation," Opt. Express 18, 23466-23471 (2010). Published, 11/2010.
  • A. Agrawal, T. Matsui, W. Zhu, A. Nahata, Z.V. Vardeny, “Terahertz spectroscopy of plasmonic fractals,” Phys. Rev. Lett. 102, 113901 (2009). Published, 2009.
  • Z.V. Vardeny and A. Nahata, “Anderson localization of slow light,” Nature Photonics 2, 75-76 (2008). Published, 2008.
  • W. Zhu, A. Agrawal, and A. Nahata, "Planar plasmonic terahertz guided-wave devices," Opt. Express 16, 6216-6226 (2008). Published, 2008.
  • A. Agrawal, Z. V. Vardeny, and A. Nahata, “Engineering the dielectric function of plasmonic lattices,” Opt. Express 16, 9601-9613 (2008). Published, 2008.
  • W. Zhu and A. Nahata, “Electric field vector characterization of terahertz surface plasmons,” Opt. Express 15, 5616-5624 (2007). Published, 2007.
  • T. Matsui, A. Agrawal, A. Nahata, and Z.V. Vardeny, “Transmission resonances through quasicrystal arrays of subwavelength apertures,” Nature (London) 446, 517-520 (2007). Published, 2007.
  • K. Appusamy, X. Jiao, S. Blair, A. Nahata, and S. Guruswamy, "Mg thin films with Al seed layers for UV plasmonics," J. Phys. D: Appl. Phys. 48, 184009 (2015). Published, 04/2015.
  • J. Wang, S. Liu, S. Guruswamy, and A. Nahata, "Electrolytic reduction of liquid metal oxides and its application to reconfigurable structured devices," Sci. Rep. 5, 8637 (2015). Published, 03/2015.
  • A. Paulsen and A. Nahata, "K-space design of terahertz plasmonic filters," Optica 2, 214–220 (2015). Published, 02/2015.
  • M. J. Hagmann, P. Andrei, S. Pandey, and A. Nahata, "Possible applications of scanning frequency comb microscopy for carrier profiling in semiconductors," J. Vacuum Sci. Technol. B 33, 02B109 (2015). Published, 01/2015.
  • K. Yang, S. Liu, S. Arezoomandan, A. Nahata, and B. Sensale-Rodriguez, "Graphene-based tunable metamaterial terahertz filters," Appl. Phys. Lett. 105, 093105 (2014). Published, 10/15/2014.
  • J. Wang, S. Liu, S. Guruswamy, and A. Nahata, "Injection molding of free-standing, three-dimensional, all-metal terahertz metamaterials," Adv. Opt. Mat. (2014). Published, 06/14/2014.
  • L. Zhu, S. Kapoor, Q. Parry, A. Nahata, and A. V. Virkar, "Oxidation/reduction studies on nanoporous platinum films by electrical resistance measurements," Journal of Power Sources 269, 621–631 (2014). Published, 04/30/2014.
  • B. Gupta, S. Pandey, S. Guruswamy, and A. Nahata, "Terahertz plasmonic structures based on spatially varying conductivities," Adv. Opt. Mat. 1–7 (2014). Published, 04/15/2014.
  • J. Wang, S. Liu, S. Guruswamy, and A. Nahata, "Reconfigurable terahertz metamaterial device with pressure memory," Opt. Express, 22, 4065–4074 (2014). Published, 03/15/2014.
  • K. Appusamy, S. Blair, A. Nahata, S. Guruswamy, “Low-loss magnesium films for plasmonics,” Mater. Sci. Eng. B 181, 77– 85 (2014). Published, 02/15/2014.
  • B. Gupta, S. Pandey, and A. Nahata, "Plasmonic waveguides based on symmetric and asymmetric T-shaped structures," Opt. Express 22, 2868 (2014). Published, 01/15/2014.
  • Z. V. Vardeny, A. Nahata, and A. Agrawal, "Optics of photonic quasicrystals," Nature Photonics 7, 177–187 (2013). Published, 02/2013.
  • T. D. Nguyen, A. Nahata, and Z. V. Vardeny, "Measurement of surface plasmon correlation length differences using Fibonacci deterministic hole arrays," Opt. Express 20, 15222-15231 (2012). Published, 06/2012.
  • T. D. Nguyen, S. Liu, M. D. Lima, S. Fang, R. H. Baughman, A. Nahata, and Z. V. Vardeny, "Terahertz surface plasmon polaritons on freestanding multi-walled carbon nanotube aerogel sheets," Opt. Mater. Express 2, 782-788 (2012). Published, 05/2012.