Browsing by Author "Ullah, Zaka"

Now showing items 1-5 of 5

    • Enhanced tunable plasmonic resonance in crumpled graphene resonators loaded with gate tunable metamaterials 

      Khattak, Muhammad Irfan; Ullah, Zaka; Al-Hasan, Mu’ath; Sheikh, Fawad (OSA - The Optical Society, 2020)
      Graphene devices have been widely explored for photonic applications, as they serve as promising candidates for controlling light interactions resulting in extreme confinement and tunability of graphene plasmons. The ...

    • Enhancement of Pre-Trained Deep Learning Models to Improve Brain Tumor Classification 

      Ullah, Zaka; Odeh, Ayman; Khattak, Ihtisham; Hasan, Muath Al (Slovene Society Informatika, 2023)
      The early detection of brain tumors is crucial due to their highly dangerous nature and the potential for life-threatening consequences if left undiagnosed. Brain tumors significantly shorten life expectancy and cause ...

    • Experimental Evaluation of Trilateration-Based Outdoor Localization with LoRaWAN 

      Magsi, Saeed Ahmed; Khir, Mohd Haris Bin Md; Nawi, Illani Bt Mohd; Hasan, Muath Al; Ullah, Zaka; Khan, Fasih Ullah; Saboor, Abdul; Siddiqui, Muhammad Aadil (Tech Science Press, 2023)
      Long Range Wide Area Network (LoRaWAN) in the Internet of Things (IoT) domain has been the subject of interest for researchers. There is an increasing demand to localize these IoT devices using LoRaWAN due to the quickly ...

    • Fabrication of a large scale metasurface with high resolution and enhanced absorption 

      Al Hasan, Muath; Ullah, Zaka; Nawi, Illani; Mabrouk, Ismail Ben (Optica Publishing Group (formerly OSA), 2023)
      Plasmonic metasurface nanostructures have the potential to enable nonlinear optical functionality in metasurfaces by reducing power operating thresholds and enabling ultra-thin subwavelength devices. However, low absorption ...

    • Interparticle-Coupled Metasurface for Infrared Plasmonic Absorption 

      Ullah, Zaka; Nawi, Illani M.; Al-Hasan, Muath; Junaid, Muhammad; Mabrouk, Ismail Ben; Rehman, Abdul (Institute of Electrical and Electronics Engineers Inc., 2023)
      Plasmonic metasurfaces operating in the long-wavelength infrared region (LWIR) are primarily employed for bio-sensing and imaging applications. The key factor affecting the capability of LWIR metasurfaces is absorption ...