Lew Reynolds

Director of Graduate Program
Teaching Professor

Director of Graduate Program, Nanoengineering
Instrumentation Manager
  • 919-515-7622
  • Engineering Building I (EB1) 3002C

Lew Reynolds was a Distinguished Member of Technical Staff at Bell Laboratories for 23 years prior to coming to NCSU in 2003. He has 30 years experience in the growth, characterization, and device development of III-V compound semiconductors. He has investigated extensively the influence of doping profiles on laser characteristics, developed MOVPE growth techniques for growth on gratings and along mesa sidewalls to minimize defects, and collaborated on the design of high speed photonic devices. More recent efforts have focused on mobility modulation in AlGaN HFET structures, strain relaxation in InGaAs solar cell structures, characterization of GaAsSb nanowires for mid-IR applications, and the pulse width dependence of optical gain in conjugated polymers.

He has been issued eight U.S. patents. His current research interests are compound semiconductor materials and devices, electrical and optical properties, thin film epitaxial growth of group III-nitrides and group II-oxides, heteroepitaxy, strain relaxation in misfit systems, defects and interfaces, quantum well structures, electronic and photonic devices, optical properties of conjugated polymers, and nanostructured materials. Currently teach two undergraduate laboratory courses and a graduate one on nanoelectronics. Faculty contact responsible for use of MSE lab service center equipment, for example, SEM, X-ray diffractometer, SQUID VSM, and PPMS.

Education

Ph.D. 1974

Materials Science

University of Virginia

M.S. 1972

Materials Science

University of Virginia

B.S. 1970

Physics

Virginia Military Institute

Research Description

Dr. Reynolds' interests include compound semiconductor materials and devices, epitaxial thin film growth, heteroepitaxy, strain relaxation in misfit systems, defects and interfaces, nanoscale materials, and optical properties of conjugated polymers.

Publications

A study of dopant incorporation in Te-doped GaAsSb nanowires using a combination of XPS/UPS, and C-AFM/SKPM
Ramaswamy, P., Devkota, S., Pokharel, R., Nalamati, S., Stevie, F., Jones, K., … Iyer, S. (2021), SCIENTIFIC REPORTS. https://doi.org/10.1038/s41598-021-87825-4
Dual-Responsive Microgels for Structural Repair and Recovery of Nonwoven Membranes for Liquid Filtration
Ramesh, S., Davis, J., Roros, A., Eiben, J., Fabiani, T., Smith, R., … Menegatti, S. (2021), ACS APPLIED POLYMER MATERIALS, 3(3), 1508–1517. https://doi.org/10.1021/acsapm.0c01360
Tuning the Magnetic Properties of Two-Dimensional MXenes by Chemical Etching
Allen-Perry, K., Straka, W., Keith, D., Han, S., Reynolds, L., Gautam, B., & Autrey, D. E. (2021), MATERIALS, 14(3). https://doi.org/10.3390/ma14030694
A study of n-doping in self-catalyzed GaAsSb nanowires using GaTe dopant source and ensemble nanowire near-infrared photodetector
Devkota, S., Parakh, M., Johnson, S., Ramaswamy, P., Lowe, M., Penn, A., … Iyer, S. (2020), NANOTECHNOLOGY, 31(50). https://doi.org/10.1088/1361-6528/abb506
Doping Dependent Magnetic Behavior in MBE Grown GaAs1-xSbx Nanowires
Kumar, R., Liu, Y., Li, J., Iyer, S., & Reynolds, L. (2020), SCIENTIFIC REPORTS, 10(1). https://doi.org/10.1038/s41598-020-65805-4
Epitaxial High-Yield Intrinsic and Te-Doped Dilute Nitride GaAsSbN Nanowire Heterostructure and Ensemble Photodetector Application
Pokharel, R., Ramaswamy, P., Devkota, S., Parakh, M., Dawkins, K., Penn, A., … Iyer, S. (2020), ACS APPLIED ELECTRONIC MATERIALS, 2(9), 2730–2738. https://doi.org/10.1021/acsaelm.0c00450
Hybrid GaAsSb/GaAs Heterostructure Core-Shell Nanowire/Graphene and Photodetector Applications
Nalamati, S., Devkota, S., Li, J., Lavelle, R., Huet, B., Snyder, D., … Iyer, S. (2020), ACS APPLIED ELECTRONIC MATERIALS, 2(10), 3109–3120. https://doi.org/10.1021/acsaelm.0c00433
A Study of GaAs1-xSbx Axial Nanowires Grown on Monolayer Graphene by Ga-Assisted Molecular Beam Epitaxy for Flexible Near-Infrared Photodetectors
Nalamati, S., Sharma, M., Deshmukh, P., Kronz, J., Lavelle, R., Snyder, D., … Iyer, S. (2019), ACS APPLIED NANO MATERIALS, 2(7), 4528–4537. https://doi.org/10.1021/acsanm.9b00893
Improved performance of GaAsSb/AIGaAs nanowire ensemble Schottky barrier based photodetector via in situ annealing
Sharma, M., Ahmad, E., Dev, D., Li, J., Reynolds, C. L., Liu, Y., & Iyer, S. (2019), NANOTECHNOLOGY, 30(3). https://doi.org/10.1088/1361-6528/aae148
Planar Hall effect and anisotropic magnetoresistance in semiconducting and conducting oxide thin films
Akouala, C. R., Kumar, R., Punugupati, S., Reynolds, C. L., Jr., Reynolds, J. G., Mily, E. J., … Hunte, F. (2019), APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 125(5). https://doi.org/10.1007/s00339-019-2592-y

View all publications via NC State Libraries

Grants

Excellence in Research: “GaAsSb/GaAs Nanowire Based Avalanche Photodetectors on Si”
National Science Foundation (NSF)(9/15/18 - 8/31/22)
Dilute Nitride GaAsSbN/GaAs Nanowires for Infrared Photodectors
US Navy-Office Of Naval Research(6/01/16 - 2/29/20)
Identification/Quantification of Low Level Recombination Centers in Silicon
NCSU Silicon Solar Consortium (SiSoC) Research Center(12/01/14 - 12/31/16)
A Study of GaAsSb Nanowires for Photodetectors
US Army - Army Research Office(4/27/15 - 10/26/18)
Interfacial Induced Properties in GaN Devices
National Science Foundation (NSF)(9/01/13 - 8/31/18)
Proposal for Phase II of the SiSoC NSF I/UCRC: Enhancing the Manufacturability of Silicon Solar Cells
National Science Foundation (NSF)(10/01/13 - 9/30/18)
A study of GaAsSb Nanowires by Molecular Beam Epitaxy for Near IR Applications
US Army - Army Research Office(6/15/11 - 6/14/15)
SiSoC Associate Membership - MEMC
SunEdison, Inc. formerly MEMC Electronic Materials Co.(1/01/08 - 12/31/15)