Nanotechnology and Water Sustainability Research Unit

Prof LW Snyman

College of Science, Engineering and Technology
School of Engineering
Nanotechnology and Water Sustainability (NanoWS) Reserach Unit
Professor
Tel: 011 670 9715
E-mail: snymalw@unisa.ac.za

Qualifications

  • PhD Physics (NMMU, South Africa, 1987)

NRF Rating

C3

Currently teaching

  • Physical  processes: thermal , optical  
  • Opto-Electronics
  • Nano and Micro-Electronics
  • Electronic  Control  System Development

Fields of academic interests

  • Physical processes: thermal , optical  
  • Opto-Electronics
  • Nano and Micro-Electronics
  • Electronic  Control  System Development

Field of Specialisation

  • Physical  processes: thermal , optical  
  • Opto-Electronics
  • Nano and Micro-Electronics
  • Electronic  Control  System Development

Books

  • Kaikai Xu, Weifeng Sun, Kingsley A. Ogudo, Lukas W. Snyman, Jean- Luc Polleux, Qi Yu and Guannpyng Li  (2014). Silicon Avalanche based   Si LEds   and  their  potential  integration  into CMOS  and  RF   bipolar  technology”  , Advances in Optical Communication,  edited by Narottam Das, ISBN 978-953-51-1730-8, pages  115 -141,   Publisher: InTech, Chapters published November 19, 2014 under CC BY 3.0 license, DOI: 10.5772/58505

Journal articles

  • Lukas W. Snyman, Kaikai Xu*2, Herzl Aharoni3, and Ning Zhang,  “Generating Micro and Nano Si LEDs emitting at 750-850 nm Optical Emissions in RF Silicon Integrated Circuitry”  ,   Department of Electrical Engineering, University of South Africa, Pretoria 0001, South Africa;  State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China;  Department of Electrical and Computer Engineering, Ben-Gurion University of the Negev, Beer-Sheva, 84105, Israel;   Submitted  to  IEEE   Journal  of  Quantum  Engineering , USA,  April  2019.

  • Lukas W. Snyman *1, Jinchao Qian2, Kaikai Xu3, Herzl Aharoni4 (fellow  OSA),  “Stimulation of 700-900 nm wavelength optical emission from Si AMLEDs  and  coupling  into  Si3N4 waveguides using  a  RF Silicon Integrated Circuit  Process” , 1 Unit for Nanotechnology Research, University of South Africa, Pretoria 0001, South Africa, 2 Department of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China, 3 State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China, 4 Department of Electrical and Computer Engineering, Ben-Gurion University of the Negev, Beer-Sheva, 84105, Israel,  Accepted   for   publication  in  OSA  Continuum (USA),  June 2019.
  • Steve Mvili-Gampio, Lukas W. Snyman, “Developing a small photovoltaic power supply system with adaptive technologies for rural Africa: Design, cost and efficiency analyses”,  Journal of Energy in Southern Africa,  29 (4), 60-68, December 2018
  • MF Twite, LW Snyman, J De Koker, D Yusuff,  “Development of a large-area, low-cost solar water-heating system for South Africa with a high thermal energy collection capacity”, Journal of Energy in Southern Africa 30 (1), 49-59, March 2019. ISSN 1021-447X printed version,  ISSN 2413-3051 online version, DOI: http://dx.doi.org/10.17159/2413-3051/2019/v30i1a5226.

  • K Xu, Y Chen, TA Okhai, LW Snyman, “Micro optical sensors based on avalanching silicon light-emitting devices monolithically integrated on chips”,  Optical Materials Express 9 (10), 3985-3997,  (Impact   factor 2.67) , 2019.

  • H Sun, K Xu, J Zhao, J Zhang, Y Zhou, L Liu, J Yuan, L Huang, K Zhu, L.W. Snyman ,   “A dependency of emission efficiency of poly-silicon light-emitting device on avalanching current”, Optical Materials 88, 711-717, 6, 2019
  • TA Okhai, L.W. Snyman, JL Polleux,  “Wavelength dispersion phenomena observed for emitted optical radiation from ap plus nn plus silicon avalanche mode light-emitting device in a radio frequency bipolar-integrated circuitry “Optical  Engineering  (1), 2019.

  • Fullbright M.  Twite,  Lukas  W.  Snyman   and  Kevin Jalet,    “Innovative    low  cost   thermal   energy   transfer and storage   in a  low pressure    high pressure   water   reservoir  environment” , 2nd International Symposium on Environment, Energy Science and Technology ,  Venue: Misty Hills, Drift Boulevard, Muldersdrift,  18 - 21 August, 2019

  • Lee Olivier  and    Lukas W. Snyman, “Thermal-to-Electricity Energy  Conversion Systems  for  South Africa  using  water   as energy storage  medium”  2nd International Symposium on Environment, Energy Science and Technology ,  Venue: Misty Hills, Drift Boulevard, Muldersdrift,  18 - 21 August, 2019.

  • Timothy A. Okhai 1,2, Lukas W. Snyman 2 and Usisipho Feleni 2 ,  “On-Silicon Chip based Receptor Technology for the Identification of Absorbed CO, CO2 and Bio-species” 2nd International Symposium on Environment, Energy Science and Technology ,  Venue: Misty Hills, Drift Boulevard, Muldersdrift,  18 - 21 August, 2019

PATENTS  GRANTED  (25)  

SELECTED  PATENTS :  

  • “ Complete - Roof Solar Thermal Energy Collector ”  SA  Patent Journal  2015  (granted by SA CIPRO as ZA 2016/05297  ),  Inventor: Snyman, Lukas Willem.  International application WO/2018/090065. H01L 35/30, PCT/ZA2017/050084,  Filed on  17.05.2018,   University of  South Africa ,   filed   by  Hahn  and  Hahn Inc. Filed  and   published  in China. Brazil, United States, ARIPO and Japan. 

 

  • “Thermal energy to electrical energy extraction system”  SA  Patent Journal  2015, (granted by SA CIPRO as ZA 2016/07673),  Inventor: Snyman, Lukas Willem.  International application WO/2018/090065.Filed on  17.05.2018,   H01L 35/30, PCT/ZA2017/050084,  University of  South Africa,   filed   by  Hahn  and  Hahn Inc. Filed  and   published  in China. Brazil, United States, ARIPO and Japan. 

 

  • “Electronic controller for household energy control based on timing and tariff data”   SA  Patent Journal 2014  ( granted by SA  CIPRO as  SA 2015/04789).  Inventor :   Snyman,  Lukas  Willem,   International  Application :  PCT/ZA2016/050021, WIPO  3318020.  European  Patent,  Published  09.05.2018 by  European  Patent  Organisation  Ref:   H04L 12/28,  16774836, University of South Africa,   Also   to be  published  in China. Brazil, United States, ARIPO and Japan.  international  patent   filed   by  Hahn  and  Hahn Inc. on behalf  of UNISA

 

  • “Low  Cost  Wind   Turbine  with  self  governing  speed  regulation  mechanism”  SA  Patent Journal 2018,    ZA 2018/05297.    Granted  by SA  CIPRO  on   31 May  2018.   Inventor:  Snyman, Lukas Snyman
  •   “650 nm Silicon  Avalanche Light Emitting  Diode” , SA  Patent Journal 2016,    Granted  by SA  CIPRO  ZA as SA 2016/06148  on  25  Oct  2018   Priority  date  : 01-Aug-16. Inventor:    Snyman, Lukas  Willem.  Filed  Internationally  as WO /2018/049434,   15.03.2018,  PCT/ZA2017/050052,  University of South Africa by  Hahn  and  Hahn Inc.

 

  • “CMOS–based Micro-Photonic systems” , SA  Patent Journal  2011. Granted   30 Nov June 2011.     Inventor:   Snyman, Lukas Willem , Internationally    filed   as  WO/2012/075511),  PCT/ZA2011/000090) . Filed  in :  China  (201180066252.9) (assigned to TUT) (Royalties  to LW Snyman). Filed in  European   Office   (2011826188) (assigned to TUT) (Royalties  to LW Snyman) .

 

  • “CMOS  MOEMS  Sensor Device”    SA  Patent Journal  2011. Granted  by  SA  CIPRO as SA 2011/04343 (assigned to TUT).  Inventor: Snyman, Lukas Willem,  Royalties  to LW Snyman).  Filed internationally  as   PCT/ZA2010/00033, ,Granted:  EPO (2010819670)  (Assigned to TUT) (Royalties  to LW Snyman), Granted : USA  (13146469) (assigned to TUT) (royalties  to LW Snyman), Granted:  Korea (1020127000910) (assigned to TUT) (royalties  to LW Snyman) 

 

  • “Wavelength Specific Silicon Light Emitting Structure”   SA  Patent Journal  2010.  Inventor:    Snyman, LW .  Filed  internationally:  June 2010  as    PCT/ZA2010/0031.

 

GOOGLE SCHOLAR LINK:

https://scholar.google.co.za/citations?hl=en&user=7bQdEZcAAAAJ&view_op=list_works&sortby=pubdate

ORCID LINK:

https://orcid.org/0000-0003-1351-5065

Professional positions, fellowships & awards

  • Member, International  Institute  for Electrical and Electronic Engineers, USA (IEEE)
  • Member,  American Society   for  Optical  Instrumentation  Engineers  (SPIE)
  • NRF, SA-China  Bi-lateral  Grant  for research on on-chip analyte and bio sensors, 2000kR per annum, 2020 -  2022
  • Third Prize: Student Poster Award: USA Africa Nano-Technology Forum, Glenwood Lodge,  South Africa,  August 2019
  • Department  Science and Technology Award  for Top Intellectual Property Creator at Unisa,  2012 -  2018
  • Unisa  Innovation Support Programme Awards:  2017, 2018
  • Nelson Mandela University Alumni Special Achievers Award,  2017
  • Finalist for National Science and Technology Forum (NTSF) Award, Category:  Innovation,  2016
  • Finalist for National Science and Technology Forum (NTSF) Award: Category : R&D  Contributions over 10 years,   2015
  • Innovator of the Year Award:  Tshwane University of Technology, 2010
  • Researcher of the Year Award :  Tshwane University of Technology, 2003
  • Paul Scherrer  Institute, Switzerland :  One  of top 10  Research Outputs for  1996.   
  • WIRSAM  Scientific Awards  for  best  Papers  at  EMMSA  conferences,  1983, 1985  
  • SA Institute  of  Physics  Award  for   best  Ph.D  dissertation  in  Solid State  Physics / and or  Semiconductor  Physics,  1987

Projects

  • Desalination  of water through   hydro-phobic  membranes 
  • Desalination  of water through   selective   distillation 
  • Thermal   solar energy  absorbers  using   water   as  energy storage medium 
  • Development of thermal energy   to  electrical energy  conversion systems
  • Development  of micro-electronic on-chip  gas  sensors
  • Development  of micro-electronic on-chip  water analyte  sensors
  • Development of   micro-electronic on-chip  bio-sensors
  • Development  of a  low  cost  self-regulating  wind  energy  generator for small  scale power applications