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  1. No Access

    Article

    Triple-band terahertz metamaterial absorber with enhanced sensing capabilities

    A triple-band perfect metamaterial absorber was achieved in terahertz regime that is made of asymmetric metallic I-shaped resonator and metallic ground layer with dielectric spacer in the middle. The simulated...

    Shahzad Anwar, Qasim Khan, Ghafar Ali, Maaz Khan in The European Physical Journal D (2023)

  2. No Access

    Article

    Six band terahertz absorption in metamaterial for designing optical filters, and sensors

    Six band metamaterial perfect absorber at the terahertz region is made and designed of two rectangular bars and a metallic board separated by a dielectric spacer. The simulated results show that the absorber h...

    Shahzad Anwar, Ghafar Ali, Husnul Maab, Qasim Khan in Optical and Quantum Electronics (2022)

  3. No Access

    Article

    Synthesis of Graphite Doped TiO2 Nanotubes, and Their Structural, Electronic, and Photocatalytic Characterization

    Self-organized and vertically oriented TiO2 nanotubes (TNTs) were synthesized via anodization of Ti sheet in a glycerol-based used electrolyte. Graphite (Gt) is doped in TNTs by physical vapor deposition (PVD) un...

    Tariq Ali, Saima Mohyuddin, Ghafar Ali, Muhammad Ibrar in Electronic Materials Letters (2022)

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    Article

    Electrodeposition-assisted formation of anodized TiO2–CuO heterojunctions for solar water splitting

    The anatase phase titanium dioxide nanotubes (ATNTs) are investigated for photocatalytic water splitting with and without the formation of copper oxide (CuO) heterojunctions. ATNTs have been grown on titanium ...

    Saadia Jabeen, Tauqir A. Sherazi, Rahim Ullah, Syed Ali Raza Naqvi in Applied Nanoscience (2021)

  5. Article

    Open Access

    Retraction Note to: A Comparative Study of the Toxicity of Polyethylene Glycol–Coated Cobalt Ferrite Nanospheres and Nanoparticles

    An amendment to this paper has been published and can be accessed via the original article.

    Shahnaz Akhtar, Qasim Khan, Shahzad Anwar, Ghafar Ali in Nanoscale Research Letters (2020)

  6. Article

    Open Access

    RETRACTED ARTICLE: A Comparative Study of the Toxicity of Polyethylene Glycol–Coated Cobalt Ferrite Nanospheres and Nanoparticles

    We present a comparative study of the toxicity of polyethylene glycol (PEG)–coated cobalt ferrite nanoparticles and nanospheres. Nanoparticles were prepared by hydrothermal method while nanospheres were prepar...

    Shahnaz Akhtar, Qasim Khan, Shahzad Anwar, Ghafar Ali in Nanoscale Research Letters (2019)

  7. Article

    Correction to: Morphological evolution of ZnO nanostructures with hydrothermal oxidation time and their electrochemical glucose sensing properties

    In Figure 3 (a) the axis title as well as units are inadvertently mentioned as “Wavenumber (cm−1)”, which should be read as “Wavelength (nm)”. In the same Figure, the peak labels are mistakenly mentioned with uni...

    Shakil Khan, Muhammad Iftikhar, Muhammad Asim Rasheed, Maaz Khan in Applied Nanoscience (2019)

  8. No Access

    Article

    Morphological evolution of ZnO nanostructures with hydrothermal oxidation time and their electrochemical glucose sensing properties

    In this work, zinc oxide (ZnO) nanostructures have been grown from electrodeposited Zn thin film followed by hydrothermal oxidation. The Zn layer was grown on copper (Cu) substrate at room temperature and then...

    Shakil Khan, Muhammad Iftikhar, Muhammad Asim Rasheed, Maaz Khan in Applied Nanoscience (2019)

  9. No Access

    Article

    Role of temperature and NiO addition in improving photocatalytic properties of TiO2 nanotubes

    Self-organized TiO2 nanotubes (TiNTs) have been synthesized by electrochemical anodization in an electrolyte containing ethylene glycol, ammonium fluoride, and de-ionized water at 40 V for 3 h. TiNTs were then an...

    Muhammad Asim Rasheed, Rahim Rahimullah, Syed Kashif Uddin in Applied Nanoscience (2019)

  10. No Access

    Article

    Structural, Thermal and Luminescence Properties of AlN:Tm Thin Films Deposited on Silicon Substrate and Optical Fiber

    Thin films of AlN:Tm are deposited on a Si(111) and Si(100) substrates and optical fiber by rf magnetron sputtering method. 200–400 nm thick films are deposited at various temperatures to observe the effect of...

    Muhammad Maqbool, Amani Alruwaili, Dunja Milinovic, Tahirzeb Khan in Semiconductors (2018)

  11. Article

    Open Access

    Fabrication of Uniform Nanoporous Oxide Layers on Long Cylindrical Zircaloy Tubes by Anodization Using Multi-Counter Electrodes

    We have presented a method to prepare a uniform anodic nanoporous oxide film on the surface of a cylindrical zircaloy (Zr) tube. The distribution of the electric field around the Zr tube determines the distrib...

    Yang Jeong Park, Jung Woo Kim, Ghafar Ali, Hyun ** Kim in Nanoscale Research Letters (2017)

  12. Article

    Open Access

    Controlled Fabrication of Nanoporous Oxide Layers on Zircaloy by Anodization

    We have presented a mechanism to explain why the resulting oxide morphology becomes a porous or a tubular nanostructure when a zircaloy is electrochemically anodized. A porous zirconium oxide nanostructure is ...

    Yang Jeong Park, Jun Mok Ha, Ghafar Ali, Hyun ** Kim in Nanoscale Research Letters (2015)

  13. Article

    Open Access

    Synthesis of flake-like graphene from nickel-coated polyacrylonitrile polymer

    Graphene can be synthesized from polyacrylonitrile (PAN) polymer through pyrolysis. A metal catalyst such as nickel (Ni) is required for the conversion of the polymer to graphene. The metal catalysts can be pl...

    Ho-je Kwon, Jun Mok Ha, Sung Ho Yoo, Ghafar Ali, Sung Oh Cho in Nanoscale Research Letters (2014)

  14. Article

    Open Access

    Formation of self-organized Zircaloy-4 oxide nanotubes in organic viscous electrolyte via anodization

    This work reports the formation of self-organized Zircaloy-4 (Zr-4) oxide nanotubes in viscous organic ethylene glycol (EG) electrolyte containing a small amount of fluoride salt and deionized (DI) water via a...

    Ghafar Ali, Yang Jeong Park, Hyun ** Kim, Sung Oh Cho in Nanoscale Research Letters (2014)

  15. Article

    Open Access

    Tuning electronic and magnetic properties of partially hydrogenated graphene by biaxial tensile strain: a computational study

    Using density functional theory calculations, we have investigated the effects of biaxial tensile strain on the electronic and magnetic properties of partially hydrogenated graphene (PHG) structures. Our study...

    Er Hong Song, Ghafar Ali, Sung Ho Yoo, Qing Jiang in Nanoscale Research Letters (2014)

  16. Article

    Open Access

    LiFePO4 microcrystals as an efficient heterogeneous Fenton-like catalyst in degradation of rhodamine 6G

    We present a novel heterogeneous Fenton-like catalyst of LiFePO4 (LFP). LFP has been widely used as an electrode material of a lithium ion battery, but we observed that commercial LFP (LFP-C) could act as a good ...

    Zhan Jun Li, Ghafar Ali, Hyun ** Kim, Seong Ho Yoo in Nanoscale Research Letters (2014)

  17. No Access

    Article

    Synthesis and characterization of novel coatable polyimide-silica nanocomposites

    We report synthesis of a novel diamine 1,2-bis(4-(Hydrazonomethyl)phenoxy)ethane (bis- HPE) and a derived novel polyimide. The diamine was reacted with PMDA and ODA to synthesize copolyimide. Unmodified and modif...

    Toheed Akhter, Shaukat Saeed, Humaira Masood Siddiqi in Journal of Polymer Research (2013)

  18. Article

    Open Access

    Fabrication of cobalt-nickel binary nanowires in a highly ordered alumina template via AC electrodeposition

    Cobalt-nickel (Co-Ni) binary alloy nanowires of different compositions were co-deposited in the nanopores of highly ordered anodic aluminum oxide (AAO) templates from a single sulfate bath using alternating cu...

    Ghafar Ali, Muhammad Maqbool in Nanoscale Research Letters (2013)

  19. No Access

    Article

    Formation of hierarchical TiO2 nanoporous structure from free-standing TiO2 nanotubes layers

    Hierarchical TiO2 nanoporous structures with tailored porosity have been fabricated by simply annealing of free-standing TiO2 nanotubes (TNTs) layers in the presence of in situ trapped F-species. The hierarchical...

    Ghafar Ali, Seung Hwa Yoo, Jong Min Kum in Journal of Nanoparticle Research (2012)

  20. Article

    Open Access

    Improvement in the photoelectrochemical responses of PCBM/TiO2 electrode by electron irradiation

    The photoelectrochemical (PEC) responses of electron-irradiated [6, 6]-phenyl-C61-butyric acid methyl ester (PCBM)/TiO2 electrodes were evaluated in a PEC cell. By coating PCBM on TiO2 nanoparticle film, the ligh...

    Seung Hwa Yoo, Jong Min Kum, Ghafar Ali, Sung Hwan Heo in Nanoscale Research Letters (2012)

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