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  Many-body effects in a two-component, one-dimensional electron gas with repulsive, short-range interactions 

  Tanatar, B. (Elsevier, 1998-03-09)

  We investigate the correlation effects in a two-component, one-dimensional electron gas interacting via repulsive δ function interactions. Electron correlations are treated within the approximation scheme of Singwi, Tosi, ...
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  Resonant nonradiative energy transfer in CdSe/ZnS core/shell nanocrystal solids enhances hybrid white light emitting diodes 

  Nizamoglu, S.; Demir, H. V. (Optical Society of America, 2008)

  We propose and demonstrate hybrid white light emitting diodes enhanced with resonant nonradiative energy transfer in CdSe/ZnS core/shell nanocrystal solids integrated on near-UV InGaN/GaN LEDs. We observe a relative quantum ...
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  Near resonant third-order optical nonlinearities of colloidal InP/ZnS quantum dots 

  Wang, Y.; Yang, X.; He, T. C.; Gao, Y.; Demir, H. V.; Sun, X. W.; Sun, H. D. (AIP Publishing, 2013)

  We have investigated the third-order optical nonlinearities of high-quality colloidal InP/ZnS core-shell quantum dots (QDs) using Z-scan technique with femtosecond pulses. The two-photon absorption cross-sections as high ...
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  Self-aligning planarization and passivation for integration applications in III-V semiconductor devices 

  Demir, H. V.; Zheng, J. F.; Sabnis, V. A.; Fidaner, O.; Hanberg, J. P.; Harris, J. S.; Miller, D. A. B. (IEEE, 2005)

  This paper reports an easy planarization and passivation approach for the integration of III-V semiconductor devices. Vertically etched III-V semiconductor devices typically require sidewall passivation to suppress leakage ...
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  Solution Processed Tungsten Oxide Interfacial Layer for Efficient Hole-Injection in Quantum Dot Light-Emitting Diodes 

  Yang, X.; Mutlugun, E.; Zhao, Y.; Gao, Y.; Leck, K. S.; Ma, Y.; Ke, L.; Tan, S. T.; Demir, H. V.; Sun, X. W. (Wiley-VCH Verlag, 2014)

  A highly efficient and stable QLED using an inorganic WO3 nanoparticle film as a hole injection layer is demonstrated.The resulting WO3 nanoparticle-based QLEDs also exhibit superior performance compared to that of the ...
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  Plasmonic backcontact grating for P3HT:PCBM organic solar cells enabling strong optical absorption increased in all polarizations 

  Sefunc, M. A.; Okyay, A. K.; Demir, H. V. (Optical Society of America, 2011)

  In P3HT:PCBM based organic solar cells we propose and demonstrate numerically plasmonic backcontact grating architectures for strong optical absorption enhanced in both transverse-magnetic and transverse-electric polarizations. ...
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  Arrays of indefinitely long uniform nanowires and nanotubes 

  Yaman, M.; Khudiyev, T.; Ozgur, E.; Kanik, M.; Aktas, O.; Ozgur, E. O.; Deniz, H.; Korkut, E.; Bayindir, M. (Nature Publishing Group, 2011-06-12)

  Nanowires are arguably the most studied nanomaterial model to make functional devices and arrays(1,2). Although there is remarkable maturity in the chemical synthesis of complex nanowire structures(3,4), their integration ...
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  Template free preparation of nanoporous organically modified silica thin films on flexible substrates 

  Yildirim, A.; Budunoglu, H.; Yaman, M.; Guler, M. O.; Bayindir, M. (Royal Society of Chemistry, 2011)

  We report the preparation and characterization of nanoporous organically modified silica (ormosil) thin films at room temperature and neutral pH conditions from homogeneous methyl silsesquioxane (MSQ) gels. Universally ...
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  Kilometer-long ordered nanophotonic devices by preform-to-fiber fabrication 

  Bayindir, M.; Abouraddy, A. F.; Sghapira, O.; Viens, J.; D. Saygin Hinczewski; Sorin, F.; Arnold, J.; Joannopoulos, J. D.; Fink, Y. (IEEE, 2006)

  A preform-fo-fiber approach to the fabrication of functional fiber-based devices by thermal drawing in the viscous state is presented. A macroscopic preform rod containing metallic, semiconducting, and insulating constituents ...
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  Photonic band gap infrared spectrometer 

  Kondakci, H. E.; Yaman, M.; Dana, A.; Bayindir, M. (Optical Society of America, 2010-06-21)

  We propose and demonstrate an infrared (IR) absorption spectrometer, made with a spatially variable photonic bandgap (PBG) structure, a blackbody source, and a simple IR detector, to identify the IR molecular fingerprints ...
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  Improved hole distribution in InGaN/GaN light-emitting diodes with graded thickness quantum barriers 

  Ju, Z. G.; Liu, W.; Zhang, Z. H.; Tan, S. T.; Ji, Y.; Kyaw, Z. B.; Zhang, X. L.; Lu, S. P.; Zhang, Y. P.; Zhu, B.; Hasanov, N.; Sun, X. W.; Demir, H. V. (AIP Publishing, 2013)

  InGaN/GaN light-emitting diodes (LEDs) with graded-thickness quantum barriers (GTQB) are designed and grown by metal-organic chemical-vapor deposition. The proposed GTQB structure, in which the barrier thickness decreases ...
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  Extremely fast and highly selective detection of nitroaromatic explosive vapours using fluorescent polymer thin films 

  Demirel, G. B.; Daglar, B.; Bayindir, M. (The Royal Society of Chemistry, 2013-05-22)

  A novel sensing material based on pyrene doped polyethersulfone worm-like structured thin film is developed using a facile technique for detection of nitroaromatic explosive vapours. The formation of pi-pi stacking in the ...
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  Wireless Displacement Sensing Enabled by Metamaterial Probes for Remote Structural Health Monitoring 

  Ozbey, B.; Unal, E.; Ertugrul, H.; Kurc, O.; Puttlitz, C. M.; Erturk, V. B.; Altintas, A.; Demir, H. V. (Multidisciplinary Digital Publishing Institute, 2014-01-17)

  We propose and demonstrate a wireless, passive, metamaterial-based sensor that allows for remotely monitoring submicron displacements over millimeter ranges. The sensor comprises a probe made of multiple nested split ring ...
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  Photocatalytic hybrid nanocomposites of metal oxide nanoparticles enhanced towards the visible spectral range 

  Perkgoz, N. K.; Toru, R. S.; Unal, E.; Sefunc, M. A.; Tek, S.; Mutlugun, E.; Soganci, I. M.; Celiker, H.; Celiker, G.; Demir, H. V. (Elsevier, 2011-06-09)

  We propose and demonstrate photocatalytic hybrid nanocomposites that co-integrate TiO(2) and ZnO nanoparticles in the same host resin to substantially enhance their combined photocatalytic activity in the near-UV and visible ...
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  Multifunctional integrated photonic switches 

  Demir, H. V.; Sabnis, V. A.; Fidaner, O.; Harris, J. S.; Miller, D. A. B.; Zheng, J. F. (IEEE, 2005-02-22)

  Traditional optical-electronic-optical (o-e-o) conversion in today's optical networks requires cascading separately packaged electronic and optoelectronic chips and propagating high-speed electrical signals through and ...
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  Spatially Selective Assembly of Quantum Dot Light Emitters in an LED Using Engineered Peptides 

  Demir, H. V.; Seker, U. O. S.; Zengin, G.; Mutlugun, E.; Sari, E.; Tamerler, C.; Sarikaya, M. (American Chemical Society, 2011)

  Semiconductor nanocrystal quantum dots are utilized in numerous applications in nano- and biotechnology. In device applications, where several different material components are involved, quantum dots typically need to be ...
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  Plasmonic light-sensitive skins of nanocrystal monolayers 

  Akhavan, S.; Gungor, K.; Mutlugun, E.; Demir, H. V. (IOP Publishing, 2013)

  We report plasmonically coupled light-sensitive skins of nanocrystal monolayers that exhibit sensitivity enhancement and spectral range extension with plasmonic nanostructures embedded in their photosensitive nanocrystal ...
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  Transition metal oxides on organic semiconductors 

  Zhao, Y.; Zhang, J.; Liu, S.; Gao, Y.; Yang, X.; Leck, K. S.; Abiyasa, A. P.; Divayana, Y.; Mutlugun, E.; Tan, S. T.; Xiong, Q.; Demir, H. V.; Sun, X. W. (Elsevier, 2014-04)

  Transition metal oxides (TMOs) on organic semiconductors (OSs) structure has been widely used in inverted organic optoelectronic devices, including inverted organic light-emitting diodes (OLEDs) and inverted organic solar ...
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  Excitonic enhancement of nonradiative energy transfer to bulk silicon with the hybridization of cascaded quantum dots 

  Yeltik, A.; Guzelturk, B.; Hernandez Martinez, P. L.; Akhavan, S.; Demir, H. V. (American Institute of Physics, 2013)

  We report enhanced sensitization of silicon through nonradiative energy transfer (NRET) of the excitons in an energy-gradient structure composed of a cascaded bilayer of green-and red-emitting CdTe quantum dots (QDs) on ...
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  Organic-Inorganic Composites of Semiconductor Nanocrystals for Efficient Excitons 

  Guzelturk, B.; Demir, H. V. (American Chemical Society, 2015)

  Nanocomposites of colloidal semiconductor nanocrystals integrated into conjugated polymers are the key to soft-material hybrid optoelectronics, combining advantages of both plastics and particles. Synergic combination of ...

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