Browsing by Subject "Nanostructured materials"

Now showing items 21-40 of 47

    • Article  

      Hydride-assisted growth of GaN nanowires on Au/Si(0 0 1) via the reaction of Ga with NH3 and H2 

      Zervos, Matthew; Othonos, A. (2010)
      High quality, straight GaN nanowires (NWs) with diameters of 50 nm and lengths up to 3 μm have been grown on Si(0 0 1) using Au as a catalyst and the direct reaction of Ga with NH3 and N2:H2 at 900 °C. These exhibited ...
    • Article  

      In vivo imaging of quantum dots encapsulated in phospholipid micelles 

      Dubertret, B.; Skourides, Paris A.; Norris, D. J.; Brivanlou, A. H.; Libchaber, A.; Noireaux, V. (2002)
      Fluorescent semiconductor nanocrystals (quantum dots) have the potential to revolutionize biological imaging, but their use has been limited by difficulties in obtaining nanocrystals that are biocompatible. To address this ...
    • Article  

      Large scale structures in nanocomposite hydrogels 

      Loizou, Elena; Butler, P.; Porcar, L.; Kesselman, E.; Talmon, Y.; Dundigalla, A.; Schmidt, G. (2005)
      The physical picture of the large scale structures in nanocomposite hydrogels and some of their unique behavior were discussed. The aqueous solutions of the synthetic hectorite type clay, Laponite RD (LRD) and poly(ethylene ...
    • Article  

      Low temperature and cost-effective growth of vertically aligned carbon nanofibers using spin-coated polymer-stabilized palladium nanocatalysts 

      Saleem, A. M.; Shafiee, S.; Krasia-Christoforou, T.; Savva, I.; Göransson, G.; Desmaris, V.; Enoksson, P. (2015)
      We describe a fast and cost-effective process for the growth of carbon nanofibers (CNFs) at a temperature compatible with complementary metal oxide semiconductor technology, using highly stable polymer-Pd nanohybrid colloidal ...
    • Article  

      A method to enhance the CO2 storage capacity of pyroxenitic rocks 

      Rigopoulos, Ioannis; Vasiliades, Michalis A.; Petallidou, Klito C.; Ioannou, Ioannis; Efstathiou, Angelos M.; Kyratsi, Theodora (2015)
      Investigation of new efficient pathways for CO2 sequestration is of great significance for the mitigation of climate change. Ultramafic rocks are considered among the most promising lithotypes for the safe storage of CO2 ...
    • Article  

      A method to enhance the CO2 storage capacity of pyroxenitic rocks 

      Rigopoulos, I.; Vasiliades, M. A.; Petallidou, Klito C.; Ioannou, I.; Efstathiou, A. M.; Kyratsi, Theodora (2015)
      Investigation of new efficient pathways for CO2 sequestration is of great significance for the mitigation of climate change. Ultramafic rocks are considered among the most promising lithotypes for the safe storage of CO2 ...
    • Article  

      Molecular dynamic simulations of carbon nanotubes in CO2 atmosphere 

      Alexiadis, A.; Kassinos, Stavros C. (2008)
      This work investigates by means of molecular dynamics the filling of carbon nanotubes by carbon dioxide molecules. Nanotubes of various sizes are simulated and the resulting CO2 density calculated. The effects of various ...
    • Conference Object  

      Nanophase separated anionic amphiphilic model conetworks based on methacrylic acid 

      Kali, Gergely; Georgiou, Theoni K.; Iván, B.; Patrickios, Costas S.; Loizou, Elena; Thomann, Y.; Tiller, J. (2007)
      Two series of model amphiphilic polymer conetworks were synthesized by group transfer polymerization (GTP). The first one contained methyl methacrylate (MMA) and the second one 2-butyl-l-octyl methacrylate (BOMA) as ...
    • Article  

      Nanostructural studies of PVD TiAlB coatings 

      Monclus, M. A.; Baker, M. A.; Rebholz, Claus; Stolojan, V.; Gibson, P. N.; Leyland, A.; Matthews, A. (2006)
      TiAlB coatings with different compositions were deposited by co-sputtering from TiAl and TiB2 targets onto AISI316 stainless steel substrates at a temperature of 170 °C. The stoichiometry and nanostructure have been studied ...
    • Article  

      Nanostructure, mechanical and tribological properties of reactive magnetron sputtered TiCx coatings 

      Polychronopoulou, K.; Rebholz, Claus; Baker, M. A.; Theodorou, L.; Demas, N. G.; Hinder, S. J.; Polycarpou, A. A.; Doumanidis, C. C.; Böbel, K. (2008)
      This study describes the correlation between microstructure, mechanical and tribological properties of TiCx coatings (with x being in the range of 0-1.4), deposited by reactive magnetron sputtering from a Ti target in ...
    • Conference Object  

      Nature inspired node density estimation for molecular NanoNetworks 

      Saeed, T.; Lestas, Marios; Pitsillides, Andreas (Association for Computing Machinery, Inc, 2016)
      Inspired by the quorum sensing process, we propose and analyze a distributed density estimation scheme for molecular nanonetworks, based on synchronous transmission of the network nodes and sensing of the received molecular ...
    • Conference Object  

      Optical response of II-VI ZnSe nanowires 

      Ruda, H. E.; Philipose, U.; Saxena, A.; De Souza, C.; Nair, S.; Salfi, J.; Shik, A.; Othonos, Andreas S.; Lioudakis, Emmanouil E.; Tsokkou, Demetra; Zhong, L.; Fernandes, C. (2010)
      II-VI nanowires offer a unique combination of properties for developing blue/UV optoelectronic devices. Key to realizing this potential is managing the nanowire growth process to ensure appropriate properties are realized. ...
    • Article  

      Optically thin palladium films on silicon-based substrates and nanostructure formation: effects of hydrogen 

      Othonos, Andreas S.; Kalli, Kyriacos; Tsai, D. P. (2000)
      Optically thin palladium films evaporated on different silicon-based substrates are investigated following exposure to different concentrations of hydrogen gas in air. Laser modulated reflectance off the palladium surface ...
    • Doctoral Thesis  Open Access

      Organic-inorganic hybrid materials combining metal nanoparticles and functional amphiphilic diblock copolymers. Synthesis, characterization and experimental investigation of their nonlinear optical properties 

      Demetriou, Maria G. (Πανεπιστήμιο Κύπρου, Πολυτεχνική Σχολή / University of Cyprus, Faculty of Engineering, 2011-12)
      Η παρούσα εργασία στοχεύει κυρίως στη σύνθεση, χαρακτηρισμό και μελέτη των μη-γραμμικών οπτικών ιδιοτήτων καινοτόμων οργανικών-ανόργανων υβριδικών υλικών βασισμένων σε λειτουργικά αδρομερή συμπολυμερή και νανοσωματίδια ...
    • Article  

      Palladium micellar nanohybrids with tunable nonlinear optical response 

      Papagiannouli, I.; Demetriou, M.; Chatzikyriakos, G.; Iliopoulos, K.; Krasia-Christoforou, T.; Couris, S. (2013)
      In the present work, the third-order nonlinear optical response of two different types of Pd-polymer micellar nanohybrids are investigated using 4 ns, visible and infrared laser excitation. The prepared nanohybrids were ...
    • Article  

      Palladium-based micellar nanohybrids: Preparation and nonlinear optical response 

      Papagiannouli, I.; Demetriou, M.; Krasia-Christoforou, T.; Couris, S. (2014)
      In the present work the synthesis and physicochemical characterisation of a new class of Pd-containing micellar nanohybrid systems are presented. The new systems consist of metallic Pd nanoparticles and well-defined diblock ...
    • Article  

      Preparation and characterization of nanoporous ceria containing heteroatoms, with and without a matrix 

      Theocharis, Charis R.; Kyriakou, Georgia; Christophidou, Maria (2005)
      We have been interested in the synthesis and study of porous ceria, because of its importance in several catalytic applications, and notably in automobile exhaust catalysts. The mesoporosity of these solids is susceptible ...
    • Article  

      Preparation and nonlinear optical response of novel palladium-containing micellar nanohybrids 

      Iliopoulos, K.; Chatzikyriakos, G.; Demetriou, M.; Krasia-Christoforou, T.; Couris, S. (2011)
      The synthesis and characterization of novel micellar nanohybrids with controllable sizes consisting of palladium nanosized core and covered by well-defined poly(lauryl methacrylate)-block-poly(2-(acetoacetoxy)ethyl ...
    • Article  

      Properties of the ubiquitous p-n junction in semiconductor nanowires 

      Zervos, Matthew (2008)
      The properties of nanowires with built-in p-n junctions such as the energetic position of the one-dimensional sub-bands, charge distributions and band bending in equilibrium are determined by the self-consistent solution ...
    • Article  

      Self-diffusivity, hydrogen bonding and density of different water models in carbon nanotubes 

      Alexiadis, A.; Kassinos, Stavros C. (2008)
      In this paper, the density, hydrogen bonding and self-diffusivity of water confined in carbon nanotubes are investigated. Molecular dynamics is used to simulate a large variety of nanotubes with various water models. Our ...