Now showing items 1-6 of 6

    • Equivalent-circuit models for the design of metamaterials based on artificial magnetic inclusions 

      Bilotti, F.; Toscana, A.; Vegni, L.; Aydin, K.; Boratay, K.; Özbay, Ekmel (Institute of Electrical and Electronics Engineers, 2007)
      In this paper, we derive quasi-static equivalent-circuit models for the analysis and design of different types of artificial magnetic resonators-i.e., the multiple split-ring resonator, spiral resonator, and labyrinth ...
    • The left hand of electromagnetism : metamaterials 

      Alıcı, Kamil Boratay (Bilkent University, 2010)
      Metamaterials are artificial periodic structures whose electromagnetic response is solely dependent on the constituting unit cells. In the present thesis, we studied unit cell characteristics of metamaterials that has ...
    • Low thermal-mass LEDs: Size effect and limits 

      Lu, S.; Liu W.; Zhang, Z.-H.; Tan, S.T.; Ju, Z.; Ji, Y.; Zhang X.; Zhang, Y.; Zhu, B.; Kyaw, Z.; Hasanov, N.; Sun X.W.; Demir, Hilmi Volkan (Optical Society of American (OSA), 2014)
      In this work, low thermal-mass LEDs (LTM-LEDs) were developed and demonstrated in flip-chip configuration, studying both experimentally and theoretically the enhanced electrical and optical characteristics and the limits. ...
    • Micro tool design and fabrication: a review 

      Oliaei, S. N. B.; Karpat, Y.; Davim, J. P.; Perveen, A. (Elsevier, 2018)
      Mechanical micromachining is considered as a cost-effective and efficient fabrication technique to produce three dimensional features and free-form surfaces from various engineering materials. Micro cutting tools are an ...
    • Optimization of the gain-bandwidth product of capacitive micromachined ultrasonic transducers 

      Olcum, S.; Senlik, M. N.; Atalar, Abdullah (IEEE, 2005-12)
      Capacitive micromachined ultrasonic transducers (cMUT) have large bandwidths, but they typically have low conversion efficiencies. This paper defines a performance measure in the form of a gain-bandwidth product and ...
    • Parametric nonlinear lumped element model for circular CMUTs in collapsed mode 

      Aydoǧdu, E.; Ozgurluk, A.; Atalar, Abdullah; Köymen, Hayrettin (2014)
      We present a parametric equivalent circuit model for a circular CMUT in collapsed mode. First, we calculate the collapsed membrane deflection, utilizing the exact electrical force distribution in the analytical formulation ...