Now showing items 117-136 of 320

    • Fabrication of High-Efficiency CMUTs With Reduced Parasitics Using Embedded Metallic Layers 

      Roy, Rupak Bardhan; Farhanieh, Omid; Ergün, Arif Şanlı; Bozkurt, Ayhan (IEEE-Inst Electrical Electronics Engineers Inc, 2017-07-01)
      The transmit and receive sensitivity of the capacitive micromachined ultrasonic transducer (CMUT) is proportional to the active device capacitance formed by the vacuum gap of the device, and an insulation layer between the ...
    • Fabry-Perot Microtube Cavity Structure for Optical Sensing at Mid-infrared Spectrum 

      Babayigit, Ceren; Boztug, Cicek; Kurt, Hamza; Turduev, Mirbek (Institute of Electrical and Electronics Engineers Inc., 2020-03)
      In this manuscript, we propose and design two different Fabry-Perot microtube cavity refractometer configurations operating at mid-infrared (mid-IR) wavelengths. The designed refractometers' topologies are based on ...
    • Fairness aware multiple drone base station deployment 

      Akarsu, Alper; Girici, Tolga ( Institution of Engineering and Technology, 2018-03)
      The recent advances in drone technology significantly improved the effectiveness of applications such as border surveillance, disaster management, seismic surveying, and precision agriculture. The use of drones as base ...
    • FCC Physics Opportunities: Future Circular Collider Conceptual Design Report Volume 1 

      FCC Collaboration; Bozbey, Ali; Akay, Ahmet Nuri (Springer New York LLC, 2019)
      We review the physics opportunities of the Future Circular Collider, covering its e+e-, pp, ep and heavy ion programmes. We describe the measurement capabilities of each FCC component, addressing the study of electroweak, ...
    • FCC-ee: The Lepton Collider: Future Circular Collider Conceptual Design Report Volume 2 

      FCC Collaboration; Bozbey, Ali; Sultansoy, Saleh; Akay, Ahmet Nuri ( Springer Verlag, 2019)
      In response to the 2013 Update of the European Strategy for Particle Physics, the Future Circular Collider (FCC) study was launched, as an international collaboration hosted by CERN. This study covers a highest-luminosity ...
    • FCC-hh: The Hadron Collider: Future Circular Collider Conceptual Design Report Volume 3 

      FCC Collaboration; Bozbey, Ali; Sultansoy, Saleh; Akay, Ahmet Nuri (Springer Verlag, 2019)
      In response to the 2013 Update of the European Strategy for Particle Physics (EPPSU), the Future Circular Collider (FCC) study was launched as a world-wide international collaboration hosted by CERN. The FCC study covered ...
    • Fixed physical length spoof surface plasmon polariton delay lines for a 2-bit phase shifter 

      Unutmaz, Muhammed Abdullah; Ünlü, Mehmet (OSA - The Optical Society, 2020-04)
      A novel and promising candidate for the main building block of the 2-bit, 360 degrees phase shifters, namely, the fixed physical length, spoof surface plasmon polariton (sSPP) delay lines, is presented. An analytical ...
    • Focusing of light beyond the diffraction limit by randomly distributed graded index photonic medium 

      Turduev, M.; Hayran, Z.;  Kurt, Hamza (American Institute Of Physics Inc., 2016-12)
      Sub-wavelength focusing of light holds great potential in various applications of science and engineering, including nanolithography, optical microscopy, optical measurements, and data storage. In the present paper, we ...
    • FPGA Based Transmitter Design Using Adaptive Coding and Modulation Schemes for Low Earth Orbit Satellite Communications 

      İnceöz, E.; Tutgun, R.; Turgut, Ayşe Melda Yüksel (Institute of Electrical and Electronics Engineers Inc., 2020-11)
      In this study, a field-programmable gate array (FPGA) based high rate transmitter is developed for low earth orbit satellite communication links using adaptive coding and modulation (ACM) techniques. The developed transm ...
    • Frequency Optimization in High Intensity Focused Ultrasound 

      Yetik, Hasan; Ariyurek, Cemre; Bozkurt, Ayhan; Ergün, Arif Şanlı (IEEE, 2014-10)
      In high intensity focused ultrasound (HIFU) the choice of transducer frequency depends on the target depth and tissue type. At high frequencies attenuation does not permit enough acoustical power to be transmitted to the ...
    • Full utilization of semi-Dirac cones in photonics 

      Kurt, Hamza; Yasa, Utku G.; Turduev, Mirbek; Giden, İbrahim Halil (American Physical Society, 2018-05-16)
      In this study, realization and applications of anisotropic zero-refractive-index materials are proposed by exposing the unit cells of photonic crystals that exhibit Dirac-like cone dispersion to rotational symmetry reduction. ...
    • A Fully Unsupervised Framework for Scoring Driving Style 

      Ozgul, Ozan Firat; Cakir, Mehmet Ulas; Tan, Mehmet; Amasyali, Mehmet Fatih; Hayvacı, Harun Taha (IEEE, 2018)
      Rating driving performance is a challenging topic. It attracts professionals from a variety of domains such as automotive industry and insurance companies. In this work, we propose a fully unsupervised driver scoring ...
    • Genetically optimized design of ultra-compact and highly efficient waveguide crossing, optical attenuator and reflector 

      Şahin, Umut; Bor, Emre; Kurt, Hamza; Turduev, Mirbek (IEEE Computer Society, 2019)
      In this study, we present the design of ultra-compact and highly efficient photonic integrated devices by applying a meta-heuristic approach. Here, we integrated the three-dimensional finite-difference time-domain method ...
    • Graded index optical microresonators: analytical and numerical analyses 

      Dadashi, Khalil; Kurt, Hamza; Ustun, Kadir; Esen, Ramazan (Optical Soc Amer, 2014-09)
      It is known that the spectra of optical modes supported by microresonators are shape and size dependent. We have introduced an additional parameter, i.e., spatially varying refractive index, to tailor the spectra of optical ...
    • Graphene on Silicon-Nitride Photodetector 

      Moein, Tania; Gailevicius, Darius; Katkus, Tomas; Ng, Soon Hock; Lundgaard, Stefan; Varapnickas, Simonas; Moss, David J.; Kurt, Hamza; Mizeikis, Vygantas; Staliunas, Kestutis; Malinauskas, Mangirdas (SPIE, 2019-12)
      Even though graphene is a gapless material, it demonstrates strong interband absorption from a broad range of wavelengths between VIS and NIR. Recent photocurrent graphene-based detectors demonstrated strong photoresponse ...
    • Guided-mode resonance based multicolor germanium infrared photodetector 

      Yilmaz, Y.A.; Hayran, Z.; Yildiz, F.; Kilinc, T.O.; Karabacak, C.; Bor, E.; Kurt, Hamza (IEEE Computer Society, 2017-08)
      A compact low-cost multicolor germanium (Ge) infrared photodetector is designed by utilizing the guided-mode resonance condition of a one-dimensional grating with adiabatically tuned (or so-called chirped) in-plane ...
    • HE-LHC: The High-Energy Large Hadron Collider: Future Circular Collider Conceptual Design Report Volume 4 

      FCC Collaboration; Bozbey, Ali; Sultansoy, Saleh (Springer Verlag, 2019)
      In response to the 2013 Update of the European Strategy for Particle Physics (EPPSU), the Future Circular Collider (FCC) study was launched as a world-wide international collaboration hosted by CERN. The FCC study covered ...
    • Heading hold autopilot design for fixed wing aircraft 

      Akyurek, S.; U.Kasnakoğlu, Coşku; Kaynak, U. (American Institute of Aeronautics and Astronautics Inc, AIAA, 2018-01)
      Interest for autopilot design has become a rich subject in light of recent developments. There may be mixed use of the so-called modern and classical control strategies as to the design of an autopilot for any specific ...
    • Heat flux capacity measurement and improvement for the test of superconducting logic circuits in closed-cycle cryostats 

      Razmkhah, Sasan; Bozbey, Ali (Türkiye Klinikleri, 2019)
      With the current progress of superconducting integrated circuits, circuit complexities have reached more than 100,000 Josephson junctions. At the laboratory environment, circuit tests are generally being conducted at liquid ...
    • High Extinction Ratio Polarization Beam Splitter Design by Low-Symmetric Photonic Crystals 

      Yasa, Utku Gorkem; Turduev, Mirbek; Giden, Ibrahim Halil; Kurt, Hamza (IEEE-Inst Electrical Electronics Engineers Inc, 2017-05-01)
      A novel concept of polarization beam splitting with high polarization extinction ratio is proposed based on the polarization sensitive self-collimation feature of symmetry reduced photonic crystals. The idea utilizes ...