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Name Dr. Malik Sajjad Mehmood
Designation Associate Professor
Department Basic Sciences (Taxila)
Highest Qualification PhD Physics, (PIEAS, Islamabad)
Specialization Medical Physics, Material Science & Engineering, Laser Physics, Spectroscopy, Radiation Physics & Chemistry, Bio-Photonics
Phone No 0092519047849
Cell No 00923105425642
Fax No
Email [email protected]
  • M.Phil leading to PhD (Physics), PIEAS, Islamabad, Pakistan (2013)
  • M.Sc (Physics), AIOU, Islamabad, Pakistan (2006)
  • B.Sc (Math, Physics), Punjab University, Lahore, Pakistan (2003)
  • F.Sc (Pre-Engineering), Federal Board, Islamabad, Pakistan (1999)
  • Matric (Science), Rawalpindi Board, Rawalpindi, Pakistan (1997)

Briefly, My major research work is about the stabilization, modification and characterization of the ultra-high molecular weight polyethylene (UHMWPE); a versatile polymeric material used for various industrial applications. For stabilizing I have worked on number of micro and nano scale additives compatible to this unique polymer including the saline, vitamin E, MWCNTs and graphene etc. Furtherance to stabilization of UHMWPE, I have worked on enhancing its physical, chemical, shielding, and load bearing properties of UHMWPE while treating the polymer and its composites with high energy radiations such as gamma, e-beam, X-ray etc. Subsequent to formulation and treatment, characterization with resonance (ESR/EPR), wide angle X-ray diffraction (WAXS), Differential scanning calorimetery (DSC), and Raman Spectroscopy was performed to ensure the optimized structural-properties correlations for a particular industrial application. The industrial applications that are of my interests are:

  • Using the Polymer and its composites for Biomedical application
  • Using Polymer and its nano composites for energy applications
  • Using polymer and its composites for thermoelectric applications
  • Using polymer and its composites for energy storage applications as dielectric material in capacitors because it has maximum surface/static charge accumulation ability
  • Using polymer and its composites for environmental applications for filtration of drinking water
  • Using polymer and its composites for EMI and neutron shielding purpose,

On my major research areas, I have published/accepted 28 international research articles in well reputed peer reviewed ISI indexed journals, and 6 papers of mine are currently under review. Moreover, I have 11 conference proceedings three of them are published in Radiation Physics and Chemistry (peer reviewed) journal of Elsevier I have hand on experience during my PhD with maximum material characterization techniques including electron paramagnetic resonance (EPR), FTIR, Raman, DSC, TGA, WAXD, double integrating sphere (DIS), UV-Visible spectroscopy etc. In addition to this, I am working on utilizing smart mathematical approaches including Graph theory, Matrix algebra, Analytical Hierarchy process, and Multivariate statistics for optimizing the additive concentrations for cost effective and more reliable end user product. Furthermore, I am well aware of simulating the material properties while using the QUANTUM ESPRESSO and COMSOL multi physics.

Research Interests

  • Polymer processing, melt mixing, reactive extrusion, structure-property, morphology, properties,
  • Accelerated and real time aging of polymers, blends and composites
  • Radiation processing, enhancement of composites compatibility with high energy radiation, Radiation crosslinking
  • Chemical cross linking with silane, surface functionalizing the UHMWPE with silane, peroxides etc.
  • Photo dynamic crosslinking, composites compatibility enhancement with photo dynamic action
  • Thermal analysis, Microscopic analysis, dielectric properties, X-Ray Reflectometer (SRR), XRF
  • Composite process/constituents optimization with Graph theory and Matrix approach

Technical Expertise

Experimental 

Internal batch mixer (Rheomix), Extruder, Limiting Oxygen Index Chamber (LOI), High Speed Mixer, Rotary Evaporator, Heat deflection temperature machine, Ball milling, centrifuges, automated compression molding, manual cold press, UTM, mechanical mixer

Characterization

Hardness Tester, MFI, DSC, TGA, DMA, XRD, XRR, XPS, XRF, Ellipsometry, FTIR, Raman, UV-VIS, polarized light spectroscopy, Electron Spin resonance, injection molding, Viscosity meter, Gel Permeation Chromatography, Flame Photometer, Impedance spectroscopy, short pulsed lasers, Composite hydroxyl mediated methods for preparation of nano particles, Moisture meter, Osmometer, Aging ovens and chambers handling, Variance environmental chamber handling, operation of furnace In oxygen rich environment

Theoretical

Monte Carlo Modeling, Graph Theory and Matrix Algebra, Multivariate Statistical Analysis, PCA, Cluster Analysis, Box Plots, Descriptive Statistics, Fractional Calculus, Multi Criteria Decision Making, Image Processing

List of Publications (in chronological order, starting with most recent )

Book Chapters

  1. *M.S.Khurshid, M.S. Mehmood, M. Zubair, “Ultra-high molecular weight polyethylene and Graphene Oxide (UHMWPE/GO) nano composites for EMI shielding”, In Hand Book of Polymer and Ceramic Technology published by Springer Nature Switzerland AG, 2021
  2. *M.S. Mehmood, M.N. Mehmood, “Ultra-high molecular weight polyethylene and Silane (UHMWPE/Silane) Hybrids: Radiation Modifications and Characterizations”, In Hand Book of Polymer and Ceramic Technology published by Springer Nature Switzerland AG, 2021

Book

  1. M.S. Mehmood, T. Yasin, M. Ikram, “UHMWPE blends and hybrids for orthopedic medical applications: Radiation Modifications and Characterization LAP LAMBERT Academic Publishing (January 6, 2015): ISBN # 978-3659670909

International Refereed Journals (Published or Accepted only!)

  1. *A. Rizwan, M. Saleem, S. H. Serbaya, H. Alsulami, A. Ghazal and M. S. Mehmood, “ Simulation of Light Distribution in Gamma Irradiated UHMWPE Using Monte Carlo Model for Light (MCML) Transport in Turbid Media: Analysis for Industrial Scale Biomaterial Modifications”, Polymers, Vol. 13, 3039 (2021).
  2. *I. Ahmad, S. H Serbaya, A. Rizwan, M. S. Mehmood, “Spectroscopic Analysis for Harnessing the Quality and Potential of Gemstones for Small and Medium-Sized Enterprises (SMEs)”, Journal of Spectroscopy, Vol. 2021, Article ID: 6629640, (2021)
  3. A. Gul, M. N. Mehmood, M. S. Mehmood, “Graph Theory and Matrix Approach (GTMA) Model for the Selection of the Femoral-Component of Total Knee Joint Replacement”, Non-Metallic Material Science, Vol. 03, pp. 21-27, (2021)
  4. *Umm-e-Kulsoom, S. A. Gursal, M. S. Khurshid, M. Saif-ur-Rehman, A. S. Minhas, T. Yasin, N. Mehboob, M. S. Mehmood, “Investigating the effect of adding CdO nano particles on neutron shielding efficacy of HDPE”, Radiation Physics and Chemistry, (2020) https://www.sciencedirect.com/science/article/abs/pii/S0969806X20303418
  5. *M. S. Mehmood, M. Tabasam, M. Ahmed, A. Idris, T. Yasin, M. Ikram. “Mueller matrix polarimetry for characterization of E-Beam irradiated UHMWPE”, Radiation Physics and Chemistry, vol. 166. Article ID 108503, (2020).
  6. *M. S. Mehmood, I. Thira, A. Idris, T. Yasin, and M. Ikram, "UHMWPE band-gap properties-II: Effect of post e-beam irradiation real time shelf aging in air," Radiation Physics and Chemistry, vol. 159. Pp. 231-237, (2019)
  7. M. S. Mehmood, Noor.Us.Saba, Y. Khan, and T. Yasin, "Optical Properties of UHMWPE-II: Photon Distributions Studies Using Monte Carlo Simulation," Radiation Physics and Chemistry, vol. 158, pp. 103-108, (2019).
  8. S. S. Mukhtar, M. S. Mehmood, S. A. Maqbool , B. Ghafoor, M. A. Baluch, N. Siddiqui, and T. Yasin,”Effect of γ-irradiation on the thermal properties of UHMWPE/MWCNTs nanocomposites: A comparative study of incorporating unmodified and γ-ray modified MWCNTs” Bulletin of Material Science, vol. 41 (1):10, (2018).
  9. M. S. Mehmood, N. Siddiqui, S .A. Maqbool, M. A. Baluch, S.S. Mukhtar, T. Yasin, “Assessment of γ-sterilization and/or cross linking effects on orthopedic biomaterial using optical diffuse reflectance spectroscopy”, Optik, vol. 144, pp. 387-39 (2017).
  10. S. A. Maqbool, M. S. Mehmood, S. S. Mukhtar, M. A. Baluch, S. Khan, T. Yasin, Y.Khan, “Dielectric relaxation and ac conduction in γ-irradiated UHMWPE/MWCNTs nano composites: Impedance spectroscopy analysis” Radiation Physics and Chemistry, vol. 134, pp. 40-46, (2017).
  11. A. M. Azam, and M. S. Mehmood,”Thermal stability of Ultra High Molecular Weight Polyethylene nano-composites with Mg0.15 Ni0.15 Zn0.70Fe2O3”, Journal of Materials Physics and Chemistry, vol. 5, No. 1, pp. 39-42, (2017)
  12. M. Azam, A. Ali, H. Khan, T. Yasin and M. S. Mehmood, “Analysis of degradation in UHMWPE a comparative study among the various commercial and laboratory grades”, IOP Conference Series: Materials Science and Engineering, vol 46 (1), 012025,(2016).
  13. M.S. Mehmood, A. Sanawar, N. Siddiqui, T. Yasin, “Quantification of silane grafting efficacy, weak IR vibration bands and percentage crystallinity in post e-beam irradiated UHMWPE” Polymer Bulletin, vol. 74(1), pp. 213-227, (2016).
  14. B. Ghafoor, M. S. Mehmood, U. Shahid, M. A. Baluch, T. Yasin, “Influence of γ-ray modified MWCNTs on the structural and thermal properties of high-density polyethylene”, Radiation Physics and Chemistry, vol. 125, pp.145-150, (2016).
  15. A. Kamal, M. Bashir, S. Firdous, T. Yasin, M. Tariq, M. Ikram, M. S. Mehmood, “Optical properties of ultra-high molecular weight polyethylene (UHMWPE): A material of choice for total joint applications”, Radiation Physics and Chemistry, Vol. 118, pp. 102-106, (2016).
  16. H. Khan, B. Ghafoor, M.S. Mehmood, M. Ahmad, T. Yasin, M. Ikram, “Spectroscopic and sub optical band gap properties of e-beam irradiated ultra-High molecular weight polyethylene”, Radiation Physics and Chemistry, Vol. 117, pp. 172-177, (2015).
  17. *M.S. Mehmood, M.S. Jahan, T, Yasin, M. Tariq, M.A. Choudhry, and M. Ikram, “On the Structural Analysis of -Ray Induced Primary Free Radicals in UHMWPE and Vitamin E Stabilized UHMWPE by ESR Spectroscopy”, Journal of Applied Spectroscopy, Vol 2015, pp,1-8 (2015) Article ID 653853.
  18. M. Bashir, M. S. Mehmood, M. A. Choudary, T. Yasin,  I. Ahmad,  M. N. Haq, A. Asif, and M. Ikram, “Analysis of pulse laser induced modifications on HDPE for laser processing of polyethylene.” Journal of Russian Laser Research, Vol. 36 (3), pp. 258-268, (2015).
  19. *M. S. Mehmood, B. M. Walters T. Yasin, M. Ahmad, M. S. Jahan, Sanjay R. Mishra, and M. Ikram,  “Correlation of  residual  radical’s  with  three  phase  morphology  of  UHMWPE: Analysis  for  the  dependence  on  heat  involved  during  vitamin  E  diffusion.”  European Polymer Journal, Vol. 53, pp.  13-21,(2014).  
  20. *M. Shafiq, M.S. Mehmood, T. Yasin, “On the structural and physicochemical properties of gamma irradiated UHMWPE/silane hybrid”, Material Chemistry and Physics, Vol.  143,  pp.  425-433,(2013)
  21. M.  Ahmad ,  S.  Ali, M.S.  Mehmood, A.  Khurshid, and M. Ikram, “Ex-vivo assessment of CCl4 induced hepatic injury using polarized light spectroscopy” Applied Spectroscopy, Vol.  67, No.  12, pp.  1382-1389,(2013)
  22. *M.  S.  Mehmood, T.  Yasin, M. S.Jahan, Sanjay R. Mishara, B. M.  Walter, M. Ahmad and M. Ikram “Assessment of residual radicals in γ-sterilized shelf aged UHMWPE stabilized with vitamin-E.    ” Polymer  Degradation  and  Stability,  Vol.  98,  No.  6,  pp.  1256-1263,(2013).
  23. M. S. Mehmood, T. Yasin, M. S. Jahan, B. M. Walters, M. Ahmad and M. Ikram, “EPR study of γ-irradiated  UHMWPE  doped  with  vitamin  E:  assessment  of  thermal  effects  on  the residual free radicals during vitamin E diffusion.  ” Applied Magnetic Resonance, Vol.  44, No. 4, pp. 531–542, (2013).
  24. M.S. Mehmood, M. S. Jahan ,Sanjay R. Mishra and B. M. Walters, “The effect of high dose on  residual  radicals  in  open  air  irradiated  α  -T  UHMWPE  resin  powder”  Proceeding of  9th  Ionization  radiation  and  protection  (IRaP’  2010) Conference, Vol.  84 pp. 100–104,(2013)
  25. M.  Attique, G.  Gilanie, H.  Ullah, M.  S.  Mehmood, M.  S.  Naweed, M.  Ikram,  I.Vitkin “Colorization  and  automated  segmentation  of  human  T2  MR  brain  images  for characterization of soft tissues” PLOS one Vol. 7, No. 3, pp. 1-13 (2012).
  26. M. S. Mehmood, H.Ullah, M. S. Jahan, Sanjay R. Mishra, B. M. Walters and M. Ikram, “The effect  of  high  dose  of  gamma-irradiation  on  residual  radicals  concentration  in  ultra-high molecular weight polyethylene (UHMWPE) in the presence of vitamin E”, Polymer Science Series A, Vol. 54, No. 5, pp. 343–348, (2012).
  27. H.  Ullah, M.  Atif,  S.  Firdous,  M.S.  Mehmood,  M.  Ikram,  C.  Kurachi,  C.  Grecco,  G. Nicolodelli, V. S. Bagnato, “Femtosecond light distribution at skin and liver of rats: analysis for use in optical diagnostics”, Laser Physics Letters, Vol. 7, No. 12, 889–898  (2010).
  28. Hafeez-Ullah,  M.Atif,  S.Firdous,  M.S.  Mehmood,  M.Y.Hamza,  M.Imran,  G.Husain, M.Ikram,  “Optical  properties  of  normal  and  thermally  coagulated  chicken  liver  tissue measured  ex  vivo  with  diffuse  reflectance”,  Optics  and  Spectroscopy,  Vol.  110,  No.  2,  pp. 313–319,(2011).
Assistant Professor

Master Research Thesis Supervised 

Sr. No.

Name of Student with Regd. No.

Title with Approval date

University name of Student

1

Asad Muhammad Azam

Characterization of ultra-high molecular weight polyethylene nano composites with Mg0.15Ni0.15Zn0.70Fe2O3

 

Department of Physics, Umeå University, Umeå Sweden

 

2

Asad Muhammad Azam

Spectroscopic and Sub Optical

Band Gap Properties and Morphological Study of Ultra-High Molecular Weight Polyethylene Nano Composites with Mg0.15Ni0.15Zn0.70Fe2O3

 

Department of Physics, Umeå University, Umeå Sweden

 

3

 

Shumaila Adrees

 

Synthesis and characterization of gamma irradiated UHMWPE/Sepolite nano composites

Department of Physics, University of Agriculture, Faisalabad, Pakistan

4

Hamna Khan

14-S/UET-MS-PHY-14

Spectroscopic and Sub Optical Band Gap Properties of Electron Beam Irradiated Ultra High Molecular Weight Polyethylene

Department of Basic Sciences, UET, Taxila

 

5

Anna Sanawar

14-S/UET-MS-PHY-06

Characterization of gamma and e-beam irradiated ultra high molecular weight poly ethylene/silane hybrid

 

Department of Basic Sciences, UET, Taxila

 

6

Saqlain Saqib Mukhtar

14-S/UET-MS-PHY-13

 

Study of physico-chemical and structural properties of UHMWPE/ γ-MWCNTS nano composites

Department of Basic Sciences, UET, Taxila

 

7

Syed Asad Maqbool

14-S/UET-MS-PHY-05

Dielectric behaviour of gamma irradiated uhmwpe/ γ-mwcnts nano composites

Department of Basic Sciences, UET, Taxila

 

8

Shaista Batool

14-S/UET-MS-PHY-08

Utilization of electromagnetic waves for the enhancement of seed’s germination

Department of Basic Sciences, UET, Taxila

 

9

Aisha Ali

14-S/UET-MS-PHY-11

Non-destructive radiation dosimetery using UV-VIS and FTIR spectroscopy

Department of Basic Sciences, UET, Taxila

 

10

Shahbaz Khurshid

14-S/UET-MS-PHY-04

Synthesis and Characterization of polymer nano composites for EMI shielding

Department of Basic Sciences, UET, Taxila

 

11

Maria Tabbassam

UET/BSD/14F-PHY-14

Characterization of orthopedic biomaterial using polarization sensitive spectroscopy

Department of Basic Sciences, UET, Taxila

 

12

Noor.us.Saba

UET/BSD/14F-PHY-07

Diffuse Reflectance Spectroscopy for Extracting the Optical Properties of Polymer Based Biomaterials

Department of Basic Sciences, UET, Taxila

 

13

Asmat Tahira

UET/BSD/14F-PHY-14

Study of shelf aging effects on the structural, thermal and band gap properties of e-beam irradiated ultra-high molecular weight polyethylene

Department of Basic Sciences, UET, Taxila

 

14

Ambrene

UET/BSD/15-PHY-03

Modeling and simulation of laser beam through polymeric materials

Department of Basic Sciences, UET, Taxila

 

15

Imtiaz Ahmad

17-MS-BSD-PHY-12

Characterizations of gemstones using molecular spectroscopy

Department of Basic Sciences, UET, Taxila

 

16

Aqsa Irfan

17-MS-BSD-PHY-09

 

Thermoelectric behavior of ultra high molecular weight polyethylene nanocomposites

Department of Basic Sciences, UET, Taxila

 

17

Umm e Kulsoom

17-MS-BSD-PHY-13

Preparation and characterization of novel neutron shielding material

Department of Basic Sciences, UET, Taxila

 

18

Syed Danish Hussian Rizvi

2018-UET/MS-PHY-10

 

Assessing the thermal annealing effect on the band gap properties of Ultra-High Molecular Weight Polyethylene (UHMWPE)

Department of Basic Sciences, UET, Taxila

 

19

Amina Mehmood

2018-UET/MS-PHY-18

 

Application specific material selection model using multiple attribute decision making approach

Department of Basic Sciences, UET, Taxila

 

20

Amber Gul

2018-UET/MS-PHY-18

Application of Graph Theory and Matrix Approach for Suitable Orthopedic Bio-material Selection

Department of Basic Sciences, UET, Taxila

 

21

Malik Saif-Ur-Rehman

2018-UET/MS-PHY-04

Synthesis and characterization of Orthopedic Biomaterials with Intrinsic Piezoelectric Characteristics

Department of Basic Sciences, UET, Taxila

 

22

Awais Shahid Minhas

2018-UET/MS-PHY-19

Assessing the Efficacy of Green Sustainable Process for synthesizing the novel UHMWPE nano composites with superior oxidation resistance

Department of Basic Sciences, UET, Taxila

 

23

Muhammad Sohail

2019-UET/MS-PHY-03

 

Optimization of Emission Current Densities iin Vacuum Diodes Through Particle-In-Cell Simulations

 

Department of Basic Sciences, UET, Taxila