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Shanthi Iyer

Professor

North Carolina Agricultural and Technical State University
College
College of Engineering

Department
Electrical & Computer Engineering

Contact
McNair Hall and JSNN 536/I106
Education
B.S.Physics / University of Delhi
OtherFrench / University of Delhi
M.S.Physics / University of Delhi
Ph.D.Indian Institute of Technology Delhi

Bio

Prof. Iyer has been responsible for the initiation and development of NCA&TSU’s state of the art Molecular Beam Epitaxy (MBE) Laboratory and associated academic/research programs. She was also the Director of the Center of Excellence for Battlefield Capability Enhancements, with focus on developing and demonstrating novel materials, that advance the state-of-the-art in flexible electronics, as well as for environmentally-stable, organic/inorganic semiconductors leading to luminescent devices for flexible displays. Current research work is on the MBE materials growth & development of GaAsSb(N) nanowire based photodetectors in the SWIR region.

Prof. Iyer has been responsible for the initiation and development of NCA&TSU’s state of the art Molecular Beam Epitaxy (MBE) Laboratory and associated academic/research programs. She was also the Director of the Center of Excellence for Battlefield Capability Enhancements, with focus on developing and demonstrating novel materials, that advance the state-of-the-art in flexible electronics, as well as for environmentally-stable, organic/inorganic semiconductors leading to luminescent devices for flexible displays. Current research work is on the MBE materials growth & development of GaAsSb(N) nanowire based photodetectors in the SWIR region.

Research Interests

Nanostructured materials and optoelectronic devices, molecular beam epitaxy, transparent amorphous oxide thin film transistors for flexible electronics and solar cells

Recent Publications

  • Shyam Aravamudhan, Joseph Graves, Jr, Shanthi Iyer, Ajit Kelkar, Adam Hall, Christopher Kepley, Dennis LaJeunesse, James Ryan, Marinella Sandros, Joseph Starobin, others (2010). (Friday, March 18th, 2011. 2: 00 PM, Journal Club. Article “Direct differentiation of human embryonic stem cells into selective neurons on nanoscale ridge/groove pattern arrays”, Presented by Rabeah Rawashdeh). 31, pp. 4360–4366. Biomaterials.
  • Shanthi Iyer, Lew Reynolds, Tom Rawdanowicz, Sai Ojha, Pavan Kasanaboina, Adam Bowen (2014). (A Study of Ga Assisted Growth of GaAs/GaAsSb Axial Nanowires by Molecular Beam Epitaxy). In Ajit Kelkar, Daniel Herr, James Ryan, (Advances in Nanosciences and Nanoengineering) pp. 31-49. CRC Press.
  • Pavan Kasanaboina , Sai Ojha, Shifat Sami , Lewis Reynolds, Yang Liu , Shanthi Iyer (2015). (Bandgap Tuning of GaAs/GaAsSb Core-Shell Nanowires Grown by Molecular Beam Epitaxy). (105036) 30, pp. 10. Semiconductor Science and Technology.
  • 2. Pavan Kumar Kasanaboina , Estiak Ahmad , Jia Li , Lewis Reynolds , Yang Liu , Shanthi Iyer (2015). (Self Catalyzed Growth of Dilute Nitride GaAs/GaAsSbN/GaAs Core-Shell Nanowires by Molecular Beam Epitaxy). (Sept.2015) 107, pp. 103111-5. Applied Physics Letters.
  • Ngoc Nguyen, Briana McCall, Robert Alston, Ward Collis, Shanthi Iyer (2015). (The Effect of Annealing Temperature on the Stability of Gallium Tin Zinc Oxide Thin Film Transistors). 30, pp. 9. Semiconductor Science and Technology.
  • Pavan Kumar Kasanaboina, Sai Krishna Ojha, Shifat Sami, Lewis Reynolds, Yang Liu, Shanthi Iyer (2016). (Effect of Growth Parameters and Substrate Surface Preparation for High Density Vertical GaAs/GaAsSb Core-shell Nanowires with Photoluminescence Emission at 1.3 µm). In Springer, (4) 45, pp. 2108-2114. Journal of Electronic Materials.
  • Pavan Kasanaboina, Manish Sharma, Prithviraj Deshmukh, Lewis Reynolds, Yang Liu , Shanthi Iyer (2016). (Effects of Annealing on GaAs/GaAsSbN/GaAs Core-Multi Shell Nanowires). (1) 11, pp. 1-6. Nanoscale Research Letters.
  • Sai Ojha, Pavan Kasanaboina, Lewis Reynolds, Thomas Rawdanowicz, Yang Liu, Ryan White, Shanthi Iyer (2016). (Incorporation of Be Dopant in GaAs Core and Core-Shell Nanowires by Molecular Beam Epitaxy). (2) 34, pp. 02L114-1-02L114-6. Journal of Vauum Science and Technology B.
  • Estiak Ahmad, Pavan Kasanaboina, Md Karim, Manish Sharma, Lew Reynolds, Yang Liu, Shanthi Iyer (2016). (Te Incorporation in GaAs1-x Sbx Nanowires and P-I-N Axial Structure). In IOP, 31, pp. 8. Semiconductor science and technology.
  • Estiak Ahmad, Md Karim, Shihab Hafiz, Lew Reynolds, Yang Liu, Shanthi Iyer (2017). (A Two-Step Growth Pathway for High Sb Incorporation in GaAsSb Nanowires in the Telecommunication Wavelength Range). In Nature, (10111) 7, pp. 12 . Scientific Reports.
  • Estiak Ahmad, Sai Ojha, Pavan Kasanaboina, Lew Reynolds, Yang Liu, Shanthi Iyer (2017). (Bandgap Tuning in GaAs1-x Sbx Axial Nanowires Grown by Ga-Assisted Molecular Beam Epitaxy ). In IOP, 32, pp. 035002 (10 pp). Semiconductor Science and Technology.
  • Manish Sharma, Prithviraj Deshmukh, Pavan Kasanaboina, Lewis Reynolds, Yang Liu, Shanthi Iyer (2017). (Growth of Defect-Free GaAsSbN Axial Nanowires via Self-Catalyzed Molecular Beam Epitaxy). In IOP, 32, pp. 125003 (8 pp). Semiconductor Science and Technology.
  • Manish Sharma, Md Karim, Pavan Kasanaboina, Jia Li, Shanthi Iyer (2017). (Pitch-Induced Bandgap Tuning in Self-Catalyzed Growth of Patterned GaAsSb Axial and GaAs/GaAsSb Core-Shell Nanowires using MBE). In American Chemical Society, 17, pp. 730-737. Crystal Growth and Design.
  • Prithviraj Deshmukh, Manish Sharma, Surya Nalamati, Lewis Reynolds, Yang Liu, Shanthi Iyer (2018). (Molecular Beam Epitaxial Growth of High Quality Ga-Catalyzed GaAs 1-xSbx (x>0.8) Nanowires on Si (111) with Photoluminescence Emission reaching 1.7 μm). In IOP, 33, pp. 125007 (9 pp). Semiconductor Science and Technology.
  • Surya Nalamati, Manish Sharma, Prithviraj Deshmukh, Jeffrey Kronz, Robert Lavelle, David Snyder, Lew Reynolds, Yang Liu, Shanthi Iyer (2019). (A Study of GaAsSb Axial Nanowires Grown on Monolayer Graphene by Ga-Assisted Molecular Beam Epitaxy for Flexible Near Infrared Photodetectors). In ACS, ACS Applied Nano Materials.
  • Manish Sharma, Estiak Ahmad, Durjoy Dev, Jia Li, Lew Reynolds, Yang Liu, Shanthi Iyer (2019). (Improved Performance of GaAsSb/AlGaAs Nanowire Ensemble Schottky Barrier based Photodetector via In-Situ Annealing). In IOP, (3) 30, pp. 034005 (8pp). Nanotechnology.
  • Prithviraj Deshmukh, Jia Li, Surya Nalamati, Manish Sharma, Shanthi Iyer (2019). (Molecular Beam Epitaxial Growth of GaAsSb/GaAsSbN/GaAlAs Core-Multishell Nanowires for Near-Infrared Applications). In IOP, 30, pp. 275203 (10pp). Nanotechnology.
  • Surya Nalamati, Manish Sharma, Prithviraj Deshmukh, Jeffrey Kronz, Robert Lavelle, David Snyder, Lew Reynolds, Yang Liu, Shanthi Iyer (2019). (Space charge limited conduction mechanism in GaAsSb nanowire and effect of in-situ annealing in ultra-high vacuum). In IOP Publishers, (2) 31, pp. 025205. Nanotechnology.
  • Shisir Devkota, Mehul Parakh, Sean Johnson, Priyanka Ramaswamy, Michael Lowe, Aubrey Penn, Lew Reynolds, Shanthi Iyer (2020). (A Study of N-doping in Self-Catalyzed GaAsSb Nanowires using GaTe Dopant Source and Ensemble Nanowire Near Infrared Photodetector). In IOP, (31) 2, pp. 2730-2738. Nanotechnology.
  • Raj Kumar, Yang Liu, Jia Li, Shanthi Iyer, Lewis Reynolds Jr. (2020). (Doping Dependent Magnetic Behavior in MBE Grown GaAs1-xSbx Nanowires). In Nature, 10, pp. 9. Scientific Reports.
  • Rabin Pokharel, Priyanka Ramaswamy, Shisir Devkota, Mehul Parakh, Kendall Dawkins, Aubrey Penn, Matthew Cabral, Lew Reynolds, Shanthi Iyer (2020). (Epitaxial High-Yield Intrinsic and Te-doped Dilute Nitride GaAsSbN Nanowire Heterostructure and Ensemble Photodetector Application). In ACS, (9) 2, pp. 2730-2738. ACS Applied Electronic Materials.
  • Surya Nalamati, Shisir Devkota, Jia Li, Robert Lavelle, Benjamin Huet, David Snyder, Aubrey Penn, Lew Reynolds, Shanthi Iyer (2020). (Hybrid GaAsSb/GaAs Heterostructure Core-Shell Nanowire/Graphene and Photodetector Application). In ACS, (10) 2, pp. 3109-3120. ACS Applied Electronic Materials.
  • Priyanka Ramaswamy, Shisir Devkota, Rabin Pokharel, Surya Nalamati, Fred Stevie, Keith Jones, Lew Reynolds, Shanthi Iyer (2021). (A Study of Dopant Incorporation in Te - doped GaAsSb Nanowires using a Combination of XPS/UPS, and C-AFM/SKPM). In Nature, 11, pp. 8329 (14 pages). Scientific Reports.
  • Sean Johnson, Rabin Pokharel, Michael Lowe, Hirandeep Kuchoor, Surya Nalamati, Klinton Davis, Hemali Rathnayake, Shanthi Iyer (2021). (Study of Patterned GaAsSbN Nanowires using Sigmoidal Model). In Nature, 11, pp. 13. Scientific Reports.