Now showing items 1-4 of 4

    • Circular high-Q resonating isotropic strain sensors with large shift of resonance frequency under stress 

      Melik, R.; Unal, E.; Perkgoz, N.K.; Puttlitz, C.; Demir, Hilmi Volkan (2009)
      We present circular architecture bioimplant strain sensors that facilitate a strong resonance frequency shift with mechanical deformation. The clinical application area of these sensors is for in vivo assessment of bone ...
    • Dual-frequency division de-multiplexer based on cascaded photonic crystal waveguides 

      Akosman, Ahmet E.; Mutlu, Mehmet; Kurt, H.; Özbay, Ekmel (Elsevier, 2012-02-28)
      A dual-frequency division de-multiplexing mechanism is demonstrated using cascaded photonic crystal waveguides with unequal waveguide widths. The de-multiplexing mechanism is based on the frequency shift of the waveguide ...
    • Metamaterial based telemetric strain sensing in different materials 

      Melik, R.; Unal, E.; Perkgoz, N.K.; Puttlitz, C.; Demir, Hilmi Volkan (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 ...
    • Optimizing CMUT geometry for high power 

      Yamaner F.Y.; Olcum, Selim; Bozkurt, A.; Köymen, Hayrettin; Atalar, Abdullah (IEEE, 2010)
      Capacitive micromachined ultrasonic transducers (CMUTs) have demonstratedvarious advantages over piezoelectric transducers. However, current CMUT designsproduce low output pressures with high harmonic distortions. Optimizing ...