Dr. Daniel Barasa Bem

Title/Qualifications: Ph.D
Department/Unit/Section: Physics
Contact Address: Box 1288, Webuye, Kenya.
Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
Position: Lecturer
Area of Specialization:    Materials Science: Luminescent and polymer materials
Google Scholar: https://scholar.google.com/citations?user=J-HE9uoAAAAJ&hl=en
ORCID: https://orcid.org/0000-0001-5703-2474
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• • Materials for renewable energy applications (organic solar cells and light emitting diodes). 
  • Polymeric materials

PUBLICATION

Refereed Journals

• Adetomilola Victoria Fafure, Daniel B. Bem, Stanley Wambugu Kahuthu, Adeolu Adesoji Adediran, Michael Oluwatosin Bodunrin, Abosede Adefunke Fabuyide, Kenneth Kanayo Alaneme. Advances in Silicon-Carbon Composites Anodes Derived from Agro wastes for Applications in Lithium-ion battery: a review [ Manuscript submitted to Journal]
•  Sylvester W. Makumi, Daniel Bem, Zlatan Aksamija, Nicholus Musila, Cameron Foss (2023). In-plane thermoelectric properties of Graphene/xBN/Graphene Van der Waals Heterostructure. Journal of Physics: Condensed Matter.  35 155701 DOI 10.1088/1361-648X/acb89e
•  Elicah Nafula Wabululu, P.W.O Nyawere, Daniel B. Bem. (2018). First-Principles Calculation of Structural, Electronic and Elastic Properties of tysonite Lanthanum Fluoride (LaF3). Journal of Research in Environmental and Earth Science. 04 No.1. pp 36-40.
•  P. N. Onkundi, K. M. Munji, D. B. Bem and B. Muthoka. (2018). Effect of Deposition Parameters on Optical and Electrical Properties of SnO₂:Al Thin Films Prepared by Spray Pyrolysis Technique for Optoelectronic Devices. Int. J. Thin. Fil. Sci. Tec. 7, No. 1. 25-33.
•  Elicah Nafula Wabululu, P.W.O Nyawere, Daniel B. Bem. (2017).Scientific Research Through Simulation in Africa: Role of HPC in Computational Material Studies. International Journal of Materials Science and Applications. 6, No. 4, 2017, pp. 190-192. doi: 10.11648/j.ijmsa. 0604.14
• Daniel B. Bem, Hendrick C. Swart, Adriaan S. Luyt and Francis B. Dejene. (2011) “Luminescent properties of long-lasting BaAl_xO_y:Eu²⁺,Dy³⁺ nanocomposites”. Journal of Applied Polymer Science. Vol. 121, Issue 1, pp. 243–252, 5 DOI: 10.1002/app.33553, 2011.
• Daniel B. Bem, A.S. Luyt^c, B.F. Dejene, H.C. Swart. (2012). Temperature dependence of the structural and luminescent properties of long-lasting afterglow SrAl_xO_y:Eu²⁺,Dy³⁺ phosphor. Physica B: Condensed Matter. 407, Pages 1556–1560. doi: 10.1016/j.physb. 2011.09.085
• F.B. Dejene, D.B. Bem, H.C. Swart. (2010). Synthesis and characterization of CaAl_xO_y:Eu²⁺ phosphors prepared using  solution-combustion method. Journal of Rare Earths, 28, p. 272. DOI: 10.1016/S1002-0721(10)60380-8.
•  Bem, D.B.; Swart, H.C.; Luyt, A.S.; Coetzee, E.; Dejene, F.B. (2010). Properties of Green SrAl₂O₄ Phosphor in LDPE and PMMA Polymers. Journal of Applied Polymer Science, 117, Issue 5, pp. 2635–2640. DOI: 10.1002/app.31405. 05-Sep-2010
• D.B. Bem, A.S. Luyt, F.B. Dejene, J.R. Botha, H.C. Swart. (2009). Structural, luminescent and thermal properties of blue SrAl₂O₄:Eu²⁺,Dy³⁺ phosphor filled low-density polyethylene composites. Physica B: Condensed Matter. 404, Issue 22, Pages 4504–4508. doi: 10.1016/j.physb.2009.09.050
• D.B. Bem, H.C. Swart, A.S. Luyt, M.M. Duvenhage, F.B. Dejene. (2011). Characterization of Luminescent and Thermal Properties of Long Afterglow SrAl_xO_y:Eu²⁺,Dy³+ Phosphor Synthesized by Combustion Method. Journal of Polymer Composites. 32, Issue 2, pages 219–226. DOI: 10.1002/pc.21036.
• D.B. Bem (1998). ‘Laser technology in development.” Journal of East African Research and Development.
• D.B. Bem (1996). "The electrical transport properties of bromine-doped polypropylene. The East African Journal of Science.

Reviewed Conference Papers

• D.B. Bem, “DC conductivity and Thermoelectric Power of Bromine-doped Polypropylene.” presented at the 1st regional/6^th annual general conference of KNAP, Nairobi, 1992.

Non-reviewed Conference Papers

• Departmental (Weekly), University seminars
• Third South African Conference on Photonic Materials, Kariega, South Africa, (June, 2011)
• International Conference on Rare Earths, Beijing, China, (2010)
• 53^rd South African Institute of physics Conference, Durban (June, 2009)
• 52^nd South African Institute of physics Conference, Polokwane (June, 2008)
• 4^th International Conference of the African-Materials Research Society, Dar Es Salaam, Tanzania, (December, 2007)
• ICTP African Regional College on Science at the Nanoscale, Capetown, South Africa, (19^th to 30^th November, 2007)
• 51^st South African Institute of physics Conference, Johannesburg (June, 2007)
• School on Optical Fibre Technology, Port Elizabeth, South Africa (March, 2007)

COMMUNITY ENGAGEMENTS AND OTHER CONTRIBUTIONS

Research Funding

• The PASET Africa Regional Scholarship and Innovation Fund (2021) Proposal: (2021) Proposal: Development of Semi-Transparent glazing Photo-selective Materials for use in Greenhouse Vegetable production in Kenya Arid and Semi-Arid Lands
• African Host Universities Proposal: Partnership for skills in Applied Sciences, Engineering and Technology (PASET) (2019)
• Proposal for Computational Modeling and Materials Science (CMMS) Research mini-grants: Improvement of Power Conversion Efficiency of Solar Cells using Nanomaterials (2019)
• Vice Chancellor’s Research Grant Proposal: The Study of the Performance of Some Conducting Polymers for Use as Corrosion-resistant Coatings (1998)

 Professional Affiliation & Portfolios

• Kenya Physical Society
• Materials Research Society
• South African Institute of Physics

Recognitions, Awards and Honours

• National Research Fund (South Africa) award to study PhD (2007, 2008, 2009, 2010)
• Deans Committee Award (2000)
• Scholarship from Kenya Government to study MSc Physics at Kenyatta University (1988 - 1990)
• National Congress in Science and Technology Award: (St Patrick’s High School Iten, Kenya – 1981)