Now showing items 1-5 of 5

    • An array of surface-enhanced Raman scattering substrates based on plasmonic lenses 

      Kahraman, M.; Cakmakyapan, S.; Ozbay, E.; Culha, M. (Wiley, 2012-10-01)
      An array of ring-shaped holes is prepared from silver thin films using electron beam lithography. The optimal conditions for high performance as a surface-enhanced Raman scattering (SERS) substrate are investigated. Either ...
    • Highly directive radiation from sources embedded inside photonic crystals 

      Bulu, I.; Caglayan, H.; Ozbay, E. (American Institute of Physics, 2003)
      In this work, we have experimentally and theoretically studied the angular distribution of power emitted from a radiation source embedded inside a photonic crystal. Our results show that it is possible to obtain highly ...
    • Microstructural defect properties of InGaN/GaN blue light emitting diode structures 

      Bas, Y.; Demirel, P.; Akin, N.; Başköse, C.; Özen, Y.; Kınacı, B.; Öztürk, M. K.; Özcelik, S.; Özbay, E. (Springer US, 2014-06-28)
      In this paper, we study structural and morphological properties of metal-organic chemical vapour deposition-grown InGaN/GaN light emitting diode (LED) structures with different indium (In) content by means of high-resolution ...
    • Ultrafast and sensitive bioassay using split ring resonator structures and microwave heating 

      Caglayan, H.; Cakmakyapan, S.; Addae, S. A.; Pinard, M. A.; Caliskan, D.; Aslan, K.; Ozbay, E. (American Institute of Physics, 2010-08-30)
      In this paper, we have reported that split ring resonators (SRRs) structures can be used for bioassay applications in order to further improve the assay time and sensitivity. The proof-of-principle demonstration of the ...
    • XPS investigation of a Si-diode in operation 

      Suzer, S. (Royal Society of Chemistry, 2012)
      X-ray photoelectron spectroscopy (XPS) is utilized to investigate a Si-diode during its operation under both forward and reverse bias. The technique traces chemical and location specified surface potential variations as ...