Now showing items 1-5 of 5

    • Design and implementation of capacitive micromachined ultrasonic transducers for high power 

      Yamaner F.Y.; Olcum, S.; Bozkurt, A.; Köymen H.; Atalar, Abdullah (2011)
      Capacitive micromachined ultrasonic transducers (CMUTs) have a strong potential to compete piezoelectric transducers in high power applications. In a CMUT, obtaining high port pressure competes with high particle velocity: ...
    • Magnetic resonance imaging assisted by wireless passive implantable fiducial e-markers 

      Gokyar, S.; Alipour, A.; Unal, E.; Atalar, E.; Demir, H. V. (Institute of Electrical and Electronics Engineers, 2017)
      This paper reports a wireless passive resonator architecture that is used as a fiducial electronic marker (e-marker) intended for internal marking purposes in magnetic resonance imaging (MRI). As a proof-of-concept ...
    • Metamaterial based telemetric strain sensing in different materials 

      Melik, R.; Unal, E.; Perkgoz, N.K.; Puttlitz, C.; Demir, H. V. (Optical Society of American (OSA), 2010)
      We present telemetric sensing of surface strains on different industrial materials using split-ring-resonator based metamaterials. For wireless strain sensing, we utilize metamaterial array architectures for high sensitivity ...
    • Nested metamaterials for wireless strain sensing 

      Melik, R.; Unal, E.; Perkgoz, N. K.; Santoni, B.; Kamstock, D.; Puttlitz, C.; Demir, H. V. (IEEE, 2009-12-28)
      We designed, fabricated, and characterized metamaterial-based RF-microelectromechanical system (RF-MEMS) strain sensors that incorporate multiple split ring resonators (SRRs) in a compact nested architecture to measure ...
    • Spatial filtering using dielectric photonic crystals at beam-type excitation 

      Colak, E.; Cakmak, A. O.; Serebryannikov, A. E.; Ozbay, E. (American Institute of Physics, 2010-12-06)
      Spatial filtering is demonstrated at beam-type excitations by utilizing finite thickness slabs of two-dimensional dielectric photonic crystals (PCs) showing exotic Fabry-Perot resonances that are preserved over a wide range ...