Samuel L. Mensah
University of Arkansas
Microelectronics and Photonics
248 Physics Building
Fayetteville, 72701.
479-575-5528
650 W. Center Street
Apartment # 10
Fayetteville, AR 72701
479-799-0134
smensah@uark.edu
EDUCATION
Present
Ph.D. Microelectronics and Photonics, University of Arkansas, Fayetteville,
Arkansas
2006
M. Sc. in Physics; Michigan Technological University, Houghton, MI
2002
M.Phil. in Microelectronic Engineering and Semiconductor Physics; University of
Cambridge, Cambridge, UK.
1999
B.Sc. in Physics; University of Cape Coast, Cape Coast, Ghana
AREAS OF PROFESSIONAL SPECIALIZATION
Plasma Diagnostics, Thin Film deposition/removal and device fabrication are my main
interest. My research and publication focuses on growth and characterization of thin films
and the characterization of plasmas used in material deposition and etching.
PROFESSIONAL EXPERIENCES
2007–Present. Research Assistant. Mechanical Engineering, Department University of
Arkansas. Duties involve the characterization of plasmas used in the deposition of α-Alumina,
Titanium Nitride and a-Si using state-of-the-art intrusive and non-intrusive techniques. It also
involves new equipment installations and testing, and the supervision new students in the
research group.
2003–2006. Teaching Assistant. Department of Physics Michigan Technological University.
Responsibilities include setting up experiments for undergraduate student laboratory sessions,
supervising sessions, explaining basic Physics concepts on which the experiments were based,
grading laboratory reports and keeping records of student grades.
1999–2001. Teaching Assistant. Department of Physics, University of Cape Coast.
Responsibilities include setting up experiments for undergraduate student laboratory sessions,
supervising sessions, explaining basic Physics concepts on which the experiments were based,
grading laboratory reports, leading tutorial sessions and keeping records of student grades .
RESEARCH INTEREST
Nano-Structured materials – Growth and Characterization; Electronic Device Fabrication;
Cold Spray; Thin Films – Growth and Characterization; Plasma Diagnostics – Intrusive and
Non-Intrusive Techniques.
SCHOLARLY ACCOMPLISHMENTS
Refereed Publications
S. L. Mensah, V. K. Kayasta, I. N. Ivanov, D. B. Geohegan and Y. K. Yap, “Formation of Single
Crystalline ZnO Nanotubes without Catalyst and Templates” Appl. Phys. Letts. 90, (2007)
113108 (Most Downloaded article in APL during March 2007. Images made cover of the 12
March 2007 issue of APL)
J. Mascatello, J. Wang, B. Ulmen, V. Kayasta, M. Xie, S. Mensah, S. Wu, A. Pandey, C. Lee, A.
Prasad and Y. K. Yap, “Growth of Carbon, Boron, Nitride Nanotubes for Biosensors,” ECS
Transactions 3,(26), 1-13, (2007)
S. L. Mensah, V. K. Kayasta and Y. K. Yap, “Selective Growth of Pure and Long ZnO
nanowires by Con trolled Vapor Concentration Gradients” J. Phys. Chem. C (Letter) 111 (2007)
16092
S. L. Mensah, A. Prasad, J. Wang and Y. K. Yap, “ZnO Nanosquids: Branching Nanowires from
Nanotubes and Nanorods,” J. Nanotechnology (Special Issue on Nanowires) (in press)
P. Likpa, S. L. Mensah, D. G. Bhat and M. H. Gorgon, “Absolute Calibration of Ar Excited
States” Surf. & Coat. Technol (2007)
Conference Presentations
S. L. Mensah “Growth and Characterization of ZnO Nanostructure” 2005 National Society of
Black Physicist Annual Meeting, Orlando Florida (February 2005)
S. L. Mensah, “Growth of Pure ZnO nanowires Without a mixture of Nanobelts and
Nanocombs” 2006 National Society of Black Physicist, San Jose, California (February 2006)
S. L. Mensah, Vijaya K. Kayasta, Ilia N. Ivanov, David B. Geohegan and Yoke Khin Yap,
“Formation of Single Crystalline ZnO Nanutubes without Catalyst and Templates” 2006
America Physical Society Annual Meeting, Baltimore Maryland (March 2006)
S. L. Mensah, V. K. Kayasta and Y. K. Yap, “Growth of ZnO nanowires without a mixture of
other ZnO Nanostructures”, 2006 America Physical Society Annual Meeting, Baltimore
Maryland (March 2006)
P. Likpa, S. L. Mensah, D. G. Bhat and Matt Gorgon, “Absolute Calibration of Ar Excited States
4p Population” ICMCTF Annual Meeting, San Diego, California (April 2007)
Future Presentations
S. L. Mensah and M. H. Gordon, (2008, February) Investigation of Ar-Excited State Population
in an Argon Discharge with the aid of a Langmuir Probe and a Collisional-Radiation Model.
Annual Meeting of the National Society of Black Physicist. Washington DC.
S. L. Mensah, H. H. Abu-Safe, and M. H. Gordon, (2008 April). Langmuir Probe Investigation
of the Effect of Pressure and Hydrogen Concentration in an Ar-H-Si Plasma. Society of Vacuum
Coaters. Chicago, IL.
S. L. Mensah, S. K. Koirala, H. Abu-Safe, D. G. Bhat and M. H. Gordon (2008 April-May).
Langmuir Probe investigation: The Effect of Pressure and Hydrogen on the Electron Energy
Distribution Function and Plasma parameters in Ar-Si Plasma. ICMCTF, San Diego CA.
Professional Membership
American Society of Vacuum Coaters
Society of Metallurgical Coatings and Thin Film
American Physical Society
National Society of Black Physicists
Optical Society of America
Institute of Physics UK
2008
2007 – Present
2006 – Present
2004 – Present
2004 - 2006
2001-2003
Service
1. Cross Cultural Mentor Program
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International Student Orientation
International Student Orientation
2. International Cultural Team
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Presentation - Upward Bound
Booth – Jones Center
Presentation – End of year trip
Presentation – Summer Camp
Activity – Old People’s Home
2007 - Present
Jul-Aug. 2007
January 2008
2007 – Present
March 2007
April 2007
May 2007
July 2007
July 2007