Browsing Τμήμα Φυσικής / Department of Physics by Title

Now showing items 1350-1369 of 1411

    • Doctoral Thesis  

      Ultrafast carrier dynamics and transport properties in semiconducting nanowires 

      Τσόκκου, Δήμητρα (University of Cyprus, Department of Physics, 2012)
    • Article  

      Ultrafast carrier dynamics in band edge and broad deep defect emission ZnSe nanowires 

      Othonos, Andreas S.; Lioudakis, Emmanouil E.; Philipose, U.; Ruda, H. E. (2007)
      Ultrafast carrier dynamics of ZnSe nanowires grown under different growth conditions have been studied. Transient absorption measurements reveal the dependence of the competing effects of state filling and photoinduced ...
    • Article  

      Ultrafast carrier dynamics in highly implanted and annealed polycrystalline silicon films 

      Lioudakis, Emmanouil E.; Nassiopoulou, Androula Galiouna; Othonos, Andreas S. (2005)
      We have studied the ultrafast optical response of highly implanted and annealed polycrystalline silicon films. One-micron thin polycrystalline silicon samples-on-quartz implanted with As ions at a high dose of 2 × 10 16 ...
    • Article  

      Ultrafast carrier dynamics in Inx Ga1-x N (0001) epilayers: Effects of high fluence excitation 

      Lioudakis, Emmanouil E.; Othonos, Andreas S.; Dimakis, Emmanouil; Iliopoulos, Eleftherios; Georgakilas, A. (2006)
      Ultrafast carrier dynamics in Inx Ga1-x N (0001) epilayers were investigated, using femtosecond transient differential transmission and reflection measurements for x=0.07, 0.15, and 0.33, over a fluence range of 1-12 mJ ...
    • Article  

      Ultrafast carrier dynamics on conjugated poly(3-hexylthiophene)/[6,6]- phenyl C61 -butyric acid methyl ester composites 

      Lioudakis, Emmanouil E.; Othonos, Andreas S.; Alexandrou, Ioannis; Hayashi, Y. (2007)
      The authors have studied ultrafast carrier dynamics on poly(3- hexylthiophene)/[6,6]- phenyl C61 -butyric acid methyl ester (PCBM) composites up to 50% PCBM concentration. They have resolved the exciton intraband relaxation ...
    • Article  

      Ultrafast carrier relaxation in inn nanowires grown by reactive vapor transport 

      Othonos, Andreas S.; Zervos, Matthew; Pervolaraki, Maria (2009)
      We have studied femtosecond carrier dynamics in InN nanowires grown by reactive vapor transport. Transient differential absorption measurements have been employed to investigate the relaxation dynamics of photogenerated ...
    • Article  

      Ultrafast dynamics in phosphorus-implanted silicon wafers: The effects of annealing 

      Othonos, Andreas S.; Christofides, Constantinos (2002)
      Carrier relaxation in phosphorus-implanted silicon wafers (10(16) P+/cm(2)) annealed at different temperatures ranging from 350 to 1100 degreesC is investigated by near-infrared ultrafast time-resolved reflectivity ...
    • Article  

      Ultrafast dynamics of localized and delocalized polaron transitions in P3HT/PCBM blend materials: The effects of PCBM concentration 

      Lioudakis, Emmanouil E.; Alexandrou, Ioannis; Othonos, Andreas S. (2009)
      Nowadays, organic solar cells have the interest of engineers for manufacturing flexible and low cost devices. The considerable progress of this nanotechnology area presents the possibility of investigating new effects from ...
    • Article  

      Ultrafast dynamics of nonlinear absorption in low-temperature-grown GaAs 

      Benjamin, S. D.; Loka, H. S.; Othonos, Andreas S.; Smith, P. W. E. (1996)
      We present the results of a study of the subpicosecond dynamic behavior of optically induced absorption changes in low-temperature-grown GaAs. We show that the observed behavior is dominated by mid-gap trap states, and can ...
    • Article  

      Ultrafast hole carrier relaxation dynamics in p-type CuO nanowires 

      Othonos, Andreas S.; Zervos, Matthew (2011)
      Ultrafast hole carrier relaxation dynamics in CuO nanowires have been investigated using transient absorption spectroscopy. Following femtosecond pulse excitation in a non-collinear pump-probe configuration, a combination ...
    • Article  

      Ultrafast pulsed laser deposition of carbon nanostructures: Structural and optical characterization 

      Pervolaraki, Maria; Komninou, P.; Kioseoglou, J.; Othonos, Andreas S.; Giapintzakis, Ioannis (2013)
      Carbon nanostructured materials were obtained by high-repetition rate pulsed laser ablation of a graphite target using a train of 10-ps duration pulses at 1064 nm in different pressures of high-purity Ar gas. It is ...
    • Article  

      Ultrafast Spectroscopy and Red Emission from beta-Ga2O3/beta-Ga2S3 Nanowires 

      Othonos, Katerina M.; Zervos, Matthew; Christofides, Constantinos; Othonos, Andreas S. (2015)
      Ultrafast pump-probe and transient photoluminescence spectroscopy were used to investigate carrier dynamics in beta-Ga2O3 nanowires converted to beta-Ga2O3/Ga2S3 under H2S between 400 to 600 degrees C. The beta-Ga2O3 ...
    • Article  

      Ultrafast time-resolved spectroscopy of In2 O3 nanowires 

      Tsokkou, Demetra; Othonos, Andreas S.; Zervos, Matthew (2009)
      Ultrafast carrier dynamics in In2 O3 nanowires with an average diameter of ≈100±20 nm grown by the vapor-liquid-solid method have been investigated in detail using differential absorption spectroscopy with femtosecond ...
    • Article  

      Ultrafast time-resolved spectroscopy of Si nanocrystals embedded in SiO2 matrix 

      Lioudakis, Emmanouil E.; Emporas, A.; Othonos, Andreas S.; Nassiopoulou, Androula Galiouna (2009)
      In this work, we present a comprehensive study of ultrafast transient photoinduced absorption of silicon nanocrystals (NCs) embedded in SiO2 matrix. The samples under investigation are single monolayers of Si-NCs embedded ...
    • Article  

      Ultrafast time-resolved spectroscopy of ZnSe nanowires: Carrier dynamics of defect-related states 

      Othonos, Andreas S.; Lioudakis, Emmanouil E.; Tsokkou, Demetra; Philipose, U.; Ruda, H. E. (2009)
      In recent years, ZnSe nanowires have been widely investigated for their potential applications in optoelectronics. A typical room temperature photoluminescence spectrum of ZnSe nanowires grown by vapor-liquid-solid growth ...
    • Article  

      Ultrafast transient photoinduced absorption in silicon nanocrystals: Coupling of oxygen-related states to quantized sublevels 

      Lioudakis, Emmanouil E.; Othonos, Andreas S.; Nassiopoulou, Androula Galiouna (2007)
      The authors have studied transient photoinduced absorption in single monolayers of oxidized silicon nanocrystals. Transient photoinduced absorption measurements along with optical absorption and photoluminescence (PL) ...
    • Article  

      Ultrafast transient spectroscopy and photoluminescence properties of V 2O5 nanowires 

      Othonos, Andreas S.; Christofides, Constantinos; Zervos, Matthew (2013)
      The properties of V2O5 semiconductor nanowires have been investigated using ultrashort transient absorption spectroscopy in conjunction with time resolved photoluminescence. Femtosecond pulse excitation has been utilized ...
    • Article  

      Ultraviolet emission from low resistance Cu2SnS3/SnO2 and CuInS2/Sn:In2O3 nanowires 

      Karageorgou, E.; Zervos, Matthew; Othonos, Andreas S. (2014)
      SnO2 and Sn:In2O3 nanowires were grown on Si(001), and p-n junctions were fabricated in contact with p-type Cu2S which exhibited rectifying current-voltage characteristics. Core-shell Cu2SnS3/SnO2 and CuInS2/Sn:In2O3 ...
    • Article  

      Underlying event in hard interactions at the Fermilab Tevatron p̄p collider 

      Acosta, D.; Affolder, T.; Albrow, M. G.; Ambrose, D.; Amidei, D.; Anikeev, K.; Antos, J.; Apollinari, G.; Arisawa, T.; Artikov, A.; Ashmanskas, W.; Azfar, F.; Azzi-Bacchetta, P.; Bacchetta, N.; Bachacou, H.; Badgett, W.; Barbaro-Galtieri, A.; Barnes, V. E.; Barnett, B. A.; Baroiant, S.; Barone, M.; Bauer, G.; Bedeschi, F.; Behari, S.; Belforte, S.; Bell, W. H.; Bellettini, G.; Bellinger, J.; Benjamin, D.; Beretvas, Andrew; Bhatti, A.; Binkley, M.; Bisello, D.; Bishai, M.; Blair, R. E.; Blocker, C.; Bloom, K.; Blumenfeld, B.; Bocci, A.; Bodek, A.; Bolla, G.; Bolshov, A.; Bortoletto, D.; Boudreau, J.; Bromberg, C.; Brubaker, E.; Budagov, J.; Budd, H. S.; Burkett, K.; Busetto, G.; Byrum, K. L.; Cabrera, S.; Campbell, M.; Carithers, W.; Carlsmith, D.; Castro, A.; Cauz, D.; Cerri, A.; Cerrito, L.; Chapman, J.; Chen, C.; Chen, Y. C.; Chertok, M.; Chiarelli, G.; Chlachidze, G.; Chlebana, F.; Chu, M. L.; Chung, J. Y.; Chung, W. H.; Chung, Y. S.; Ciobanu, C. I.; Clark, A. G.; Coca, M.; Connolly, A.; Convery, M.; Conway, J.; Cordelli, M.; Cranshaw, J.; Culbertson, R.; Dagenhart, D.; D'Auria, S.; de Barbaro, P.; de Cecco, S.; Dell'Agnello, Simone; Dell'Orso, M.; Demers, S.; Demortier, L.; Deninno, M.; de Pedis, D.; Derwent, P. F.; Dionisi, Carlo; Dittmann, J. R.; Dominguez, A.; Donati, S.; D'Onofrio, M.; Dorigo, T.; Eddy, N.; Erbacher, R.; Errede, D.; Errede, S.; Eusebi, R.; Farrington, S.; Feild, R. G.; Fernandez, J. P.; Ferretti, C.; Field, R. D.; Fiori, I.; Flaugher, B.; Flores-Castillo, L. R.; Foster, G. W.; Franklin, M.; Friedman, J.; Furic, I.; Gallinaro, M.; Garcia-Sciveres, M.; Garfinkel, A. F.; Gay, C.; Gerdes, D. W.; Gerstein, E.; Giagu, S.; Giannetti, P.; Giolo, K.; Giordani, M.; Giromini, P.; Glagolev, V.; Glenzinski, D.; Gold, M.; Goldschmidt, N.; Goldstein, J.; Gomez, G.; Goncharov, M.; Gorelov, I.; Goshaw, A. T.; Gotra, Y.; Goulianos, Konstantin; Gresele, A.; Grosso-Pilcher, C.; Guenther, M.; Guimaraes da Costa, J.; Haber, C.; Hahn, S. R.; Halkiadakis, Eva; Handler, R.; Happacher, F.; Hara, K.; Harris, R. M.; Hartmann, F.; Hatakeyama, K.; Hauser, J.; Heinrich, J.; Hennecke, M.; Herndon, M.; Hill, C.; Hocker, A.; Hoffman, K. D.; Hou, S.; Huffman, B. T.; Hughes, R.; Huston, J.; Issever, C.; Incandela, J.; Introzzi, G.; Iori, M.; Ivanov, A.; Iwata, Y.; Iyutin, B.; James, E.; Jones, M.; Kamon, T.; Kang, J.; Karagoz Unel, M.; Kartal, S.; Kasha, H.; Kato, Y.; Kennedy, R. D.; Kephart, R.; Kilminster, B.; Kim, D. H.; Kim, H. S.; Kim, M. J.; Kim, S. B.; Kim, S. H.; Kim, T. H.; Kim, Y. K.; Kirby, M.; Kirsch, L.; Klimenko, S.; Koehn, P.; Kondo, K.; Konigsberg, J.; Korn, A.; Korytov, A.; Kroll, J.; Kruse, M.; Krutelyov, V.; Kuhlmann, S. E.; Kuznetsova, N.; Laasanen, A. T.; Lami, S.; Lammel, S.; Lancaster, J.; Lannon, K.; Lancaster, M.; Lander, R.; Lath, A.; Latino, G.; LeCompte, T.; Le, Y.; Lee, J.; Lee, S. W.; Leonardo, N.; Leone, S.; Lewis, J. D.; Li, K.; Lin, C. S.; Lindgren, M.; Liss, T. M.; Liu, T.; Litvintsev, D. O.; Lockyer, N. S.; Loginov, A.; Loreti, M.; Lucchesi, D.; Lukens, P.; Lyons, L.; Lys, J.; Madrak, R.; Maeshima, K.; Maksimovic, P.; Malferrari, L.; Mangano, M.; Manca, G.; Mariotti, M.; Martin, M.; Martin, A.; Martin, V.; Martínez, M.; Mazzanti, P.; McFarland, K. S.; McIntyre, P.; Menguzzato, M.; Menzione, A.; Merkel, P.; Mesropian, C.; Meyer, A.; Miao, T.; Miller, R.; Miller, J. S.; Miscetti, S.; Mitselmakher, G.; Moggi, N.; Moore, R.; Moulik, T.; Mulhearn, M.; Mukherjee, A.; Muller, T.; Munar, A.; Murat, P.; Nachtman, J.; Nahn, S.; Nakano, I.; Napora, R.; Niell, F.; Nelson, C.; Nelson, T.; Neu, C.; Neubauer, M. S.; Newman-Holmes, C.; Nigmanov, T.; Nodulman, L.; Oh, S. H.; Oh, Y. D.; Ohsugi, T.; Okusawa, T.; Orejudos, W.; Pagliarone, C.; Palmonari, F.; Paoletti, R.; Papadimitriou, Vaia; Patrick, J.; Pauletta, G.; Paulini, M.; Pauly, T.; Paus, C.; Pellett, D.; Penzo, A.; Phillips, T. J.; Piacentino, G.; Piedra, J.; Pitts, K. T.; Pompoš, A.; Pondrom, L.; Pope, G.; Pratt, T.; Prokoshin, F.; Proudfoot, J.; Ptohos, Fotios; Poukhov, O.; Punzi, G.; Rademacker, J.; Rakitine, A.; Ratnikov, F.; Ray, H.; Reichold, A.; Renton, P.; Rescigno, M.; Rimondi, F.; Ristori, L.; Robertson, W. J.; Rodrigo, T.; Rolli, S.; Rosenson, L.; Roser, R.; Rossin, R.; Rott, C.; Roy, A.; Ruiz, A.; Ryan, D.; Safonov, A.; Denis, R. S.; Sakumoto, W. K.; Saltzberg, D.; Sanchez, C.; Sansoni, A.; Santi, L.; Sarkar, S.; Savard, P.; Savoy-Navarro, A.; Schlabach, P.; Schmidt, E. E.; Schmidt, M. P.; Schmitt, M.; Scodellaro, L.; Scribano, A.; Sefov, A.; Seidel, S.; Seiya, Y.; Semenov, A.; Semeria, F.; Shapiro, M. D.; Shepard, P. F.; Shibayama, T.; Shimojima, M.; Shochet, M.; Sidoti, A.; Sill, A.; Sinervo, P.; Slaughter, A. J.; Sliwa, K.; Snider, F. D.; Snihur, R.; Spezziga, M.; Spinella, F.; Spiropulu, Maria; Spiegel, L.; Stefanini, A.; Strologas, John; Stuart, D.; Sukhanov, A.; Sumorok, K.; Suzuki, T.; Takashima, R.; Takikawa, K.; Tanaka, M.; Tano, V.; Tecchio, M.; Tesarek, R. J.; Teng, P. K.; Terashi, K.; Tether, S.; Thom, J.; Thompson, A. S.; Thomson, E.; Tipton, P.; Tkaczyk, S.; Toback, D.; Tollefson, K.; Tonelli, D.; Tönnesmann, M.; Toyoda, H.; Trischuk, W.; Tseng, J.; Tsybychev, D.; Turini, N.; Ukegawa, F.; Unverhau, T.; Vaiciulis, T.; Varganov, A.; Vataga, E.; Vejcik, S.; Velev, G.; Veramendi, G.; Vidal, R.; Vila, I.; Vilar, R.; Volobouev, I.; von der Mey, M.; Wagner, R. G.; Wagner, R. L.; Wagner, W.; Wan, Z.; Wang, C.; Wang, M. J.; Wang, S. M.; Ward, B.; Waschke, S.; Waters, D.; Watts, T.; Weber, M.; Wester, W. C.; Whitehouse, B.; Wicklund, A. B.; Wicklund, E.; Williams, H. H.; Wilson, P.; Winer, B. L.; Wolbers, S.; Wolter, M.; Worm, S.; Wu, X.; Würthwein, F.; Yang, U. K.; Yao, W.; Yeh, G. P.; Yi, K.; Yoh, J.; Yoshida, T.; Yu, I.; Yu, S.; Yun, J. C.; Zanello, L.; Zanetti, A.; Zetti, F.; Zucchelli, S. (2004)
      For comparison of inclusive jet cross sections measured at hadron-hadron colliders to next-to-leading order (NLO) parton-level calculations, the energy deposited in the jet cone by spectator parton interactions must first ...
    • Article  

      Undulating vortices in layered superconductors 

      Theodorakis, Stavros; Ettouhami, A. M. (1995)
      We present the detailed structure of vortices normal to the layers in layered superconductors, assuming only that the order parameter varies continuously between the layers. The magnetic field along the c axis undulates ...