Now showing items 1-13 of 13

    • Artificial olfaction inside nanostructured infrared fiber arrays 

      Yaman, M.; Yildirim, A.; Bayindir, M. (2011)
      Nanostructured hollow core fibers are used to demonstrate a new infrared absorption based artificial nose. The sensor unit of the array is a hollow core Bragg fiber that selectively guides incident blackbody radiation and ...
    • Colloidal nanophotonics: The emerging technology platform 

      Gaponenko S.; Demir, H. V.; Seassal C.; Woggon U. (OSA - The Optical Society, 2016)
      Dating back to decades or even centuries ago, colloidal nanophotonics during the last ten years rapidly extends towards light emitting devices, lasers, sensors and photonic circuitry to manifest itself as an emerging ...
    • Enhanced optical characteristics of light emitting diodes by surface plasmon of Ag nanostructures 

      Jang L.-W.; Ju J.-W.; Jeon J.-W.; Jeon, D.-W.; Choi J.-H.; Lee, S.-J.; Jeon, S.-R.; Baek J.-H.; Sari, E.; Demir, H. V.; Yoon H.-D.; Hwang, S.-M.; Lee I.-H. (2011)
      We investigated the surface plasmon coupling behavior in InGaN/GaN multiple quantum wells at 460 nm by employing Ag nanostructures on the top of a roughened p-type GaN. After the growth of a blue light emitting diode ...
    • Enhanced transmission of electromagnetic waves through split-ring resonator-shaped apertures 

      Sahin, L.; Aydin, K.; Sayan, G. T.; Ozbay, E. (Society of Photo-Optical Instrumentation Engineers (SPIE), 2011-06-21)
      The design of aperture shape is a promising approach for enhanced transmission through a subwavelength aperture. We designed split-ring-resonator (SRR)-shaped apertures in order to increase the transmission through ...
    • Fourier transform plasmon resonance spectrometer 

      Aibek uulu, Doolos (Bilkent University, 2017-02)
      Nanophotonics is an emerging field of research aiming to control interaction of light with matter in nanometer scale. Electrons localized on metallic nanoparticles generate localized plasmon oscillations with interesting ...
    • Graphene-quantum dot hybrid optoelectronics at visible wavelengths 

      Salihoglu, O.; Kakenov, N.; Balci, O.; Balci, S.; Kocabas, C. (American Chemical Society, 2018)
      With exceptional electronic and gate-tunable optical properties, graphene provides new possibilities for active nanophotonic devices. Requirements of very large carrier density modulation, however, limit the operation of ...
    • High-efficiency and low-loss gallium nitride dielectric metasurfaces for nanophotonics at visible wavelengths 

      Emani, N. K.; Khaidarov, E.; Paniagua-Domínguez, R.; Fu, Y. H.; Valuckas, V.; Lu S.; Zhang X.; Tan S.T.; Demir, H. V.; Kuznetsov, A. I. (American Institute of Physics Inc., 2017)
      The dielectric nanophotonics research community is currently exploring transparent material platforms (e.g., TiO2, Si3N4, and GaP) to realize compact high efficiency optical devices at visible wavelengths. Efficient ...
    • Macroscopic photoconductive nanowire arrays 

      Bayindir, M.; Yaman, M.; Ozgur, E.; Aktas O.; Khudiyev, T.; Kanik, M.; Deniz H. (2011)
      A novel high-throughput fabrication technique to produce polymer embedded functional chalcogenide nanowire arrays is demonstrated. Indefinitely-long selenium nanowire arrays are obtained and their size dependent photoconductivity ...
    • Modulation in InAs quantum dot waveguides 

      Imran Akca, B.; Dana, A.; Aydinli, A.; Rossetti, M.; Li L.; Fiore, A.; Dagli, N. (Optical Society of America, 2007)
      Modulation in molecular beam epitaxy grown self-assembled InAs quantum dot waveguides have been studied at 1500 nm as a function of wavelength and voltage. Enhanced electro-optic coefficients compared to bulk GaAs were ...
    • Photonic crystal based multi-mode high-qcavity 

      Akosman, A.E.; Mutlu, M.; Kurt H.; Ozbay, E. (2011)
      An optical race-track has been investigated in order to obtain a multi resonant structure with high-Q factors. Photonic crystal based structure provides strong field confinement and scalability in the dimensions of the ...
    • Photonic devices and systems embedded with nanocyrstals 

      Demir, H. V.; Soganci I.M.; Mutlugun, E.; Tek, S.; Huyal I.O. (2006)
      We review our research work on the development of photonic devices and systems embedded with nanocyrstals for new functionality within EU Phoremost Network of Excellence on nanophotonics. Here we report on CdSe/ZnS ...
    • Tight-binding mechanism in slow light regime 

      Akosman, A.E.; Mutlu, M.; Kurt H.; Ozbay, E. (2011)
      In this study, tight-binding formalism is applied to a photonic crystal coupled cavity structure in order to investigate the characteristics of ultra slow light modes. Eigen-mode splitting is observed and resulting group ...
    • Ultrasensitive label-free microcavity biosensors with high selectivity 

      Ozgur, E.; Bayindir, M.; Aktas O. (2011)
      High quality factor whispering gallery mode microresonators have been recently shown to exhibit detection sensitivity of single molecule; however, the selectivity of these sensors among different types of analytes remains ...