Avatar of Samuel Stephen.

Samuel Stephen

Senior Research Engineer
25 years of on the job experience in academia and research dealing with the characterization of and data interpretation of various nanomaterials such as Nanocatalysts, Polymer nanocomposites, and adsorbents employing state of the art techniques such as Analytical Electron Microscopy (SEM, TEM, AFM) , X-ray Diffraction as well as various Chromatographic and Spectroscopic Techniques such as HPLC, GC, Mass Spectroscopy, UV VIS NIR Spectroscopy, and FTIR Spectroscopy.
Khalifa University
FEI Academy
Abu Dhabi - United Arab Emirates

Skills

Sophisticated
Troubleshooting
Planning
Analysis
Research
Scanning Electron Microscope
Analytical Instrumentation
Material Characterization
Spectroscopic Techniques
Transmission Electron Microscope
X-ray Diffraction

Work experiences

Senior Research Engineer

Khalifa University

Oct 2010 ~ Dec 2019
9 yrs 3 mos
Electron microscopy suite of Central Analytic Facility. Independent management of Electron microscopy suite which houses SEM and HR TEM. Involved in imparting training, assistance, and support for the scientific populace of the university as well as the external collaborators for addressing the material characterization requirements utilizing Analytical Microscopic techniques such as TEM - EDS-GIF - EFTEM - EELS/STEM as well as SEM/EDS. Characterization and data interpretation of novel materials catalysts, polymer graphene nanocomposites, carbon nanomaterials using techniques such as Gas adsorption e.g. BET and CHEM BET, UV Vis NIR, FTIR, FT Raman Spectrometers and gravimetric technique such as TGA Characterization and results interpretation of various nanomaterials synthesized in-house as well as from external collaborations utilizing wide-angle X-ray Diffraction techniques. Hydro Desulfurization reaction studies using GC/MS and HPLC/MS Assists researchers in identifying and setting up the proper techniques, tools, and methods in their material characterization studies. Periodic maintenance, initial troubleshooting and follow up with the vendor/service agent for the scheduled visits and service calls. Facility modifications and amendments for future needs in line with the HSE norms. Annual budget preparation, initiating, technical evaluation and processing orders for new equipment, chemicals/consumables procurement and commissioning in the best interest of the Project/Institute.

Lab Instructor

Higher Colleges of Technology

Aug 2002 ~ Oct 2010
8 yrs 3 mos
Electron microscopic analysis and testing of various nanomaterial samples and finished products using techniques such as SEM/EDS Teaching the theory and laboratory-based courses Inorganic chemical analysis, Organic Chemistry, Chromatographic and Spectroscopic analysis, preparing new course materials/folders in line with the curriculum requirements. Supervision of the student dissertation projects as part of the curriculum Independent handling of material characterization laboratories that house equipment such as GC, HPLC, UV VIS NIR, FTIR, and Atomic Absorption Spectrophotometer. Responsible for the safety affairs of the laboratory which involves the periodical checks, upgrading the safety equipment and devices, implementation of new safety protocols and procedures. From 1995 June - 2002 August Analytical instrumentation lab of Zayed Complex for Herbal Research & Traditional Medicine under the Ministry of Health, Abu Dhabi asa 'Research assistant Independent handling & maintenance, of different sophisticated analytical equipment Report writing and up keeping of experimental records, preparation of SOPs Standard Operating Procedure for each equipment and various assays of both internal and external samples. Instrument validation, method validation, method documentation & software-assisted system suitability performance evaluation for ISO Accreditation Method development, validation, execution & documentation for pesticide residue and heavy metals analysis as well as other types of various assays using HPLC, LC/MS, GC/MS, and Atomic Absorption Spectrometry. Standardization, quality control, fingerprinting and pattern recognition of various pharmaceutics and natural products using various chromatographic and spectroscopic techniques. Imparting hands-on training to the junior staff in accomplishing the sophisticated Instrumental analyses. Software assisted inventorying and database of chemicals, consumables, and instruments.

Research Assistant

Zayed Complex for Herbal Research, Health Authority, Abu Dhabi.

Jun 1995 ~ Aug 2002
7 yrs 3 mos
Independent handling & maintenance, of different sophisticated analytical equipment Report writing and up keeping of experimental records, preparation of SOPs Standard Operating Procedure for each equipment and various assays of both internal and external samples. Instrument validation, method validation, method documentation & software-assisted system suitability performance evaluation for ISO Accreditation Method development, validation, execution & documentation for pesticide residue and heavy metals' analysis as well as other types of various assays using HPLC, LC/MS, GC/MS, and Atomic Absorption Spectrometry. Standardization, quality control, fingerprinting and pattern recognition of various pharmaceutics and natural products using various chromatographic and spectroscopic techniques. Imparting hands-on training to the junior staff in accomplishing the sophisticated Instrumental analyses. Software assisted inventorying and database of chemicals, consumables, and instruments.

Shift Chemist

Oil and Natural Gas Corporation

Jun 1993 ~ Dec 1994
1 yr 7 mos
Onsite analysis of various physical & chemical properties of drilling fluids in various oil wells of Oil and Natural Gas Corporation Analysis of total petroleum hydrocarbons TPHs using GC & GC/MS for pattern recognition and fingerprinting. Instrumental Skills ➢ High-Resolution Transmission Electron Microscope TEM ➢ Scanning Electron Microscope/EDS SEM ➢ Wide-angle X-ray Diffraction analyzer ➢ TGA DSC/Mass Spectrometer ➢ Atomic Absorption Spectrophotometer Flame and Furnace ➢ FTIR, UV VIS NIR, and Raman Spectrometers. ➢ CHNS - O Analyzer, Sulphur in Oil analyzer and TOC analyzer ➢ Physisorption and Chemisorption Analyzers ➢ G C/MS & LC/MS and ICP MS ➢ GPC and Ion Chromatography

Educations

FEI Academy

Transmission Electron Microscope,Imaging

- 2012

Petroleum Institute

Master of Science (MS)
Lab Safety Modules Chemicals Gases Cryogenics etc HSE

- 2010

Major

Master of Science (MS)
M.Sc. Analytical Chemistry

1991 - 1993

Kerala University

B.Sc. Chemistry

- 1990
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