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Hamza Qayyum
Hamza Qayyum
Assistant Professor, Department of Physics, COMSATS University, Islamabad
Verified email at comsats.edu.pk
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Year
A study on natural radioactivity in Khewra Salt Mines, Pakistan
MA Baloch, AA Qureshi, A Waheed, M Ali, N Ali, M Tufail, S Batool, ...
Journal of radiation research 53 (3), 411-421, 2012
472012
Laser-induced plasma-assisted ablation (LIPAA) of glass: Effects of the laser fluence on plasma parameters and crater morphology
TU Rahman, ZU Rehman, S Ullah, H Qayyum, B Shafique, R Ali, U Liaqat, ...
Optics & Laser Technology 120, 105768, 2019
322019
Pulsed laser deposition of platinum nanoparticles as a catalyst for high-performance PEM fuel cells
H Qayyum, CJ Tseng, TW Huang, S Chen
Catalysts 6 (11), 180, 2016
302016
Assessment of radiological hazard of NORM in Margalla Hills limestone, Pakistan
M Ali, AA Qureshi, A Waheed, MA Baloch, H Qayyum, M Tufail, HA Khan
Environmental monitoring and assessment 184, 4623-4634, 2012
292012
Laser synthesis of surfactant-free silver nanoparticles for toxic dyes degradation and SERS applications
H Qayyum, W Ahmed, S Hussain, GA Khan, ZU Rehman, S Ullah, ...
Optics & Laser Technology 129, 106313, 2020
252020
Synthesis of silver and gold nanoparticles by pulsed laser ablation for nanoparticle enhanced laser-induced breakdown spectroscopy
H Qayyum, R Ali, ZU Rehman, S Ullah, B Shafique, AH Dogar, A Shah, ...
Journal of Laser Applications 31 (2), 2019
242019
Characterization of charge and kinetic energy distribution of ions emitted during nanosecond pulsed laser ablation of several metals
AH Dogar, S Ullah, H Qayyum, ZU Rehman, A Qayyum
Journal of Physics D: Applied Physics 50 (38), 385602, 2017
222017
Production of high-performance and improved-durability Pt-catalyst/support for proton-exchange-membrane fuel cells with pulsed laser deposition
TW Huang, H Qayyum, GR Lin, S Chen, CJ Tseng
Journal of Physics D: Applied Physics 49 (25), 255601, 2016
172016
Induction of electron injection and betatron oscillation in a plasma-waveguide-based laser wakefield accelerator by modification of waveguide structure
YC Ho, TS Hung, JG Jhou, H Qayyum, WH Chen, HH Chu, JY Lin, J Wang, ...
Physics of Plasmas 20 (8), 2013
122013
Laser-based two-step synthesis of Au-Ag alloy nanoparticles and their application for surface-enhanced Raman spectroscopy (SERS) based detection of rhodamine 6G and urea nitrate
H Qayyum, S Amin, W Ahmed, T Mohamed, ZU Rehman, S Hussain
Journal of Molecular Liquids 365, 120120, 2022
112022
Angular distributions of flux and energy of the ions emitted during pulsed laser ablation of copper
AH Dogar, B Ilyas, H Qayyum, S Ullah, A Qayyum
The European Physical Journal Applied Physics 54 (1), 10301, 2011
112011
Characterization of laser-induced shock waves generated during infrared laser ablation of copper by the optical beam deflection method
ZU Rehman, A Raza, H Qayyum, S Ullah, S Mahmood, A Qayyum
Applied Optics 61 (29), 8606-8612, 2022
72022
Phase transformations initiated by optical breakdown in bulk of fused silica
ZU Rehman, S Ullah, H Qayyum, M Irfan, KA Tran, H Suk, A Qayyum, ...
Optics & Laser Technology 134, 106630, 2020
72020
Excitation wavelength and colloids concentration-dependent nonlinear optical properties of silver nanoparticles synthesized by laser ablation
T Mohamed, MH El-Motlak, S Mamdouh, M Ashour, H Ahmed, H Qayyum, ...
Materials 15 (20), 7348, 2022
62022
Characterization of microcraters fabricated on the silicon surface by single and multi-pulse laser ablation at various laser intensities
TU Rahman, RAA Khan, H Qayyum, U Amin, S Ullah, AH Dogar, ...
Nuclear Instruments and Methods in Physics Research Section B: Beam …, 2021
52021
Formation of uniform high-density and small-size Ge/Si quantum dots by scanning pulsed laser annealing of pre-deposited Ge/Si film
H Qayyum, CH Lu, YH Chuang, JY Lin, S Chen
AIP Advances 6 (5), 2016
52016
Estimation of ion accelerating potential inside the nanosecond pulsed laser produced tungsten plasma
AH Dogar, SA Abbasi, H Qayyum, S Ullah, A Qayyum
The European Physical Journal D 71, 1-6, 2017
42017
Electrostatically enabled dye reduction using laser synthesized gold nanoparticles
W Ahmed, A Suliman, GA Khan, H Qayyum
Journal of Molecular Liquids 379, 121712, 2023
32023
The role of sacrificial target material in micromachining of glass using laser-induced plasma-assisted ablation (LIPAA)
TU Rahman, H Qayyum, U Amin, S Ullah, ZU Rehman, AH Dogar, ...
Radiation Effects and Defects in Solids 176 (7-8), 662-672, 2021
32021
Thickness-dependent nonlinear optical properties of ITO thin films
FA Samad, MS Abdel-wahab, WZ Tawfik, H Qayyum, R Apsari, ...
Optical and Quantum Electronics 55 (8), 753, 2023
22023
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