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      RF displacement and strain sensing system for wireless structural health monitoring 

      Özbey, Burak; Kurç, O.; Demir, Hilmi Volkan; Ertürk, Vakur B.; Altıntaş, Ayhan (IEEE, 2015)
      Structural health monitoring (SHM) is a technology with worldwide interest that is vital to ensure the reliability of any structure while also protecting the safety of human life. Over the years, a lot of research has been ...
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      An electromagnetic sensing system incorporating multiple probes and single antenna for wireless structural health monitoring 

      Özbey, Burak; Altıntaş, Ayhan; Demir, Hilmi Volkan; Ertürk, Vakur B.; Kurç, Ö. (IEEE, 2017)
      In this study, a wireless and passive displacement/strain sensing system is proposed for structural health monitoring (SHM). The wireless and passive interrogation of the sensing unit [a variant of a nested split-ring ...
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      Nanocrystal optoelectronics for high quality semiconductor lighting 

      Demir, Hilmi Volkan (Optical Society of America, 2012)
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      Optically excited exciton transfer of spherical quantum dots via optical near-field ınteractions 

      Togay, Amirahmadov; Hernandez-Martinez, Pedro L.; Demir, Hilmi Volkan (American Physical Society, 2012)
      We study a system composed of a mixture of different-sized spherical quantum dots (QDs) involving optical near-field (ONF) interactions to induce effective optical excitation transfer. Here energy transfer was explained ...
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      Efficient exciton transfer from an epitaxial quantum well to an energy gradient structure composed of layer-by-layer assembled colloidal quantum dots 

      Nizamoğlu, Sedat; Hernandez-Martinez, Pedro L.; Mutlugün, Evren; Demir, Hilmi Volkan (American Physical Society, 2012)
      Efficient Exciton Transfer from an Epitaxial Quantum Well to an Energy Gradient Structure Composed of Layer-by-Layer Assembled Colloidal Quantum Dots SEDAT NIZAMOGLU1 , Bilkent University, PEDRO LUDWIG HERNANDEZ MARTINEZ, ...
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      Localized plasmon-engineered spontaneous emission of CdSe/ZnS nanocrystals closely-packed in the proximity of Ag nanoislands 

      Soğancı, İbrahim Murat; Nizamoğlu, Sedat; Mutlugün, Evren; Demir, Hilmi Volkan (2007)
      As a proof-of-concept demonstration, we show that the localized plasmons of metal nanoisland films provide the ability to modify and control the collective spontaneous emission of nanocrystals in their proximity (including ...
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      InGaN/GaN based LEDs with electroluminescence in violet, blue, and green tuned by epitaxial growth temperature 

      Sarı, Emre; Nizamoğlu, Sedat; Özel, Tuncay; Demir, Hilmi Volkan; İnal, Ayşe; Ülker, Erkin; Özbay, Ekmel; Dikme, Y.; Heuken, M. (IEEE, 2007)
      In this work, we present a full set of InGaN LEDs based on a single optimal InGaN/GaN quantum design with emission wavelengths spanning from green to blue to violet by tuning the active layer growth temperature to precisely ...
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      CdSe/ZnS core-shell nanocrystal based scintillators for enhanced detection in UV 

      Demir, Hilmi Volkan; Soğancı, İbrahim Murat; Mutlugün, Evren (IEEE, 2006)
      In this work, we present a novel scintillator that incorporates CdSe/ZnS core-shell nanocrystals to utilize both their high quantum fluorescence efficiency in the visible and high optical absorption in the UV for the purpose ...
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      Size effect in optical activation of TiO2 nanoparticles in photocatalytic process 

      Soğancı, İbrahim Murat; Mutlugün, Evren; Tek, Sümeyra; Demir, Hilmi Volkan; Yücel, D.; Çeliker, G. (IEEE, 2007)
      In this work, we optically investigate and characterize the photocatalytic recovery of contaminated TiO 2 nanoparticles of different sizes that are incorporated in solgel films to study the size effect. We demonstrate ...
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      White CdS nanoluminophore based tunable hybrid light emitting diodes 

      Nizamoğlu, Sedat; Mutlugün, Evren; Akyüz, Özgün; Kosku-Perkgöz, Nihan; Demir, Hilmi Volkan; Liebscher, L.; Sapra, S.; Gaponik, N.; Eychmüller, A. (IEEE, 2007)
      The study aims to fabricate and demonstrate hybrid white light emitting diodes that integrate white emitting CdS nanoluminophores with high light quality. Results show that the white light properties of these hybrid WLED ...
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      Demir, Hilmi Volkan (411)
      Sun, X. W. (66)Nizamoglu, S. (39)Mutlugun, E. (33)Erdem, T. (32)Tan S.T. (31)Guzelturk, B. (28)Gao, Y. (26)Nizamoğlu, Sedat (25)Liu W. (20)... View MoreKeywordsLight emitting diodes (53)Nanocrystals (51)Semiconductor quantum dots (35)Energy transfer (26)Nanoparticles (23)Photoluminescence (21)Quantum dots (21)Excitons (20)Colloidal quantum dots (18)Efficiency (18)... View MoreDate Issued2010 - 2019 (329)2004 - 2009 (82)Has File(s)Yes (411)

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