Research Papers (Prof. C.N.R. Rao): Recent submissions

  • InN nanocrystals, nanowires, and nanotubes 
    Sardar, Kripasindhu; Deepak, F L; Govindaraj, A; Seikh, M M; Rao, C N R (Wiley-VCH Verlag GmbH, 2005-01)
  • A study of graphene decorated with metal nanoparticles 
    Subrahmanyam, K S; Manna, Arun K; Pati, Swapan K; Rao, C N R (Elsevier BV, 2010-09-10)
    Interaction of nanoparticles of metals such as Ag, Au, Pt and Pd with graphene has been examined by employing Raman spectroscopy and first-principles calculations. There is a significant shift of the G-band as well as of ...
  • Optical trapping and transportation of carbon nanotubes made easy by decorating with palladium 
    Khan, Manas; Sood, A K; Mohanty, S K; Gupta, P K; Arabale, Girish V; Vijaymohanan, K; Rao, C N R (Optical Society of America, 2006-01-09)
    Individual carbon nanotubes being substantially smaller than the wavelength of light, are not much responsive to optical manipulation. Here we demonstrate how decorating single-walled carbon nanotubes with palladium particles ...
  • Binding of DNA nucleobases and nucleosides with graphene 
    Varghese, Neenu; Mogera, Umesha; Govindaraj, A; Das, Anindya; Maiti, Prabal K; Sood, Ajay K; Rao, C N R (Wiley-VCH Verlag Gmbh, 2009-01-12)
    Interaction of two different samples of graphene with DNA nucleobases and nucleosides is investigated by isothermal titration calorimetry. The relative interaction energies of the nucleobases decrease in the order guanine ...
  • Biferroic YCrO3 
    Kundu, Asish K; Krupanidhi, S B; Waghmare, Umesh V; Rao, C N R (American Physical Society, 2005-12)
    YCrO3, which has a monoclinic structure, shows weak ferromagnetism below 140 K (T-N) and a ferroelectric transition at 473 K accompanied by hysteresis. We have determined the structure and energetics of YCrO3 with ferromagnetic ...
  • Nonequilibrium magnetic properties of single-crystalline La0.7Ca0.3CoO3 
    Kundu, Asish K; Nordblad, P; Rao, C N R (The American Physical Society, 2005-10)
    Magnetic and electric properties of a single crystal of La0.7Ca0.3CoO3 have been experimentally studied. The system attains a ferromagnetic spontaneous moment below 170 K and exhibits a reentrant spin-glass phase below 100 ...
  • Graphene: the new two-dimensional nanomaterial 
    Rao, C N R; Sood, A K; Subrahmanyam, K S; Govindaraj, A (Wiley-VCH Verlag Gmbh, 2009)
    Every few years, a new material with unique properties emerges and fascinates the scientific community, typical recent examples being high-temperature superconductors and carbon nanotubes. Graphene is the latest sensation ...
  • Novel effects of size disorder on the electronic and magnetic properties of rare earth manganates of the type La0.7−xLnxBa0.3MnO3 (Ln = Pr, Nd, Gd or Dy) with large average radius of the A-site cations 
    Kundu, Asish K; Seikh, Md Motin; Ramesha, K; Rao, C N R (IOP Publishing Ltd, 2005-07-06)
    The electronic and magnetic properties of four series of rare earth manganates of the general formula La(0.7-x)Ln(x)Ba(0.3)MnO(3) (Ln = Pr, Nd, Gd or Dy) have been investigated to examine the effect of large size disorder ...
  • Extraordinary synergy in the mechanical properties of polymer matrix composites reinforced with 2 nanocarbons 
    Prasad, K Eswar; Das, Barun; Maitra, Urmimala; Ramamurty, Upadrasta; Rao, C N R (National Academy Sciences, 2009-08-11)
    One of the applications of nanomaterials is as reinforcements in composites, wherein small additions of nanomaterials lead to large enhancements in mechanical properties. There have been extensive studies in the literature ...
  • Raman evidence for orbiton-mediated multiphonon scattering in multiferroic TbMnO3 
    Kumar, Pradeep; Saha, Surajit; Muthu, D V S; Sahu, J R; Sood, A K; Rao, C N R (IOP Publishing Ltd, 2010-03-24)
    Temperature-dependent Raman spectra of TbMnO3 from 5 to 300 K in the spectral range of 200-1525 cm(-1) show five first-order Raman allowed modes and two high frequency modes. The intensity ratio of the high frequency Raman ...
  • Selectivity in the Interaction of Electron Donor and Acceptor Molecules with Graphene and Single-Walled Carbon Nanotubes 
    Varghese, Neenu; Ghosh, Anupama; Voggu, Rakesh; Ghosh, Sandeep; Rao, C N R (American Chemical Society, 2009-10-01)
    Interaction of electron donor and acceptor molecules with graphene samples prepared by different methods as well as with single-walled carbon nanotubes (SWNTs) has been investigated by isothermal titration calorimetry ...
  • Nanocrystalline Films of Au-Ag, Au-Cu, and Au-Ag-Cu Alloys Formed at the Organic-Aqueous Interface 
    Agrawal, Ved Varun; Mahalakshmi, P; Kulkarni, G U; Rao, C N R (American Chemical Society, 2006-02-14)
    By the reaction of the appropriate organometallic precursors and tetrakishydroxymethyl phosphonium chloride (THPC) at the toluene-water interface, we have prepared nanocrystalline films of Au-Ag and Au-Cu alloys with a ...
  • Simple Method of Preparing Graphene Flakes by an Arc-Discharge Method 
    Subrahmanyam, K S; Panchakarla, L S; Govindaraj, A; Rao, C N R (American Chemical Society, 2009-03-19)
    Arc discharge between graphite electrodes under a relatively high pressure of hydrogen yields graphene flakes generally containing 2-4 layers in the inner wall region of the arc chamber. The graphene flakes so obtained ...
  • Inorganic organic hybrid compounds exhibiting both magnetic order and non-linear optical properties 
    Matte, H S S Ramakrishna; Cheetham, A K; Rao, C N R (Elsevier Ltd, 2009-06)
    Hybrid organic-inorganic framework compounds constitute an important class of materials whose properties, especially paired ones, have not been adequately investigated hitherto. In this communication, we report the non-linear ...
  • NO2 and humidity sensing characteristics of few-layer graphenes 
    Ghosh, Anupama; Late, Dattatray J; Panchakarla, L S; Govindaraj, A; Rao, C N R (Taylor & Francis Ltd, 2009)
    Sensing characteristics of few-layer graphenes for NO2 and humidity have been investigated with graphene samples prepared by the thermal exfoliation of graphitic oxide, conversion of nanodiamond (DG) and arc-discharge of ...
  • Functionalization and solubilization of inorganic nanostructures and carbon nanotubes by employing organosilicon and organotin reagents 
    Gomathi, A; Hoseini, S Jafar; Rao, C N R (Royal Society of Chemistry, 2009)
    Covalent functionalization of nanowires of TiO2, ZnO and Al2O3 has been carried out by employing the organosilicon reagents aminopropyltriethoxysilane and hexadecyltrimethoxysilane (HDTMS). The presence of the organosilane ...
  • Covalent and Noncovalent Functionalization and Solubilization of Graphene 
    Subrahmanyam, K S; Ghosh, Anupama; Gomathi, A; Govindaraj, A; Rao, C N R (American Scientific Publishers, 2009-03)
    While solubilization of graphene in nonpolar solvents can be accomplished through covalent functionalization, by involving the preparation of a long-chain alkylamide derivative, it is more easily accomplished by interaction ...
  • Zero magnetization in a disordered (La1−x/2Bix/2)(Fe0.5Cr0.5)O3 uncompensated weak ferromagnet 
    Vijayanandhini, K; Simon, Ch; Pralong, V; Breard, Y; Caignaert, V; Raveau, B; Mandal, P; Sundaresan, A; Rao, C N R (IOP Publishing Ltd, 2009-12-02)
    The orthorhombic perovskite, (La1-x/2Bix/2)(Fe0.5Cr0.5)O-3 was investigated for 0 <= x <= 1. Its space group, Pnma, compatible with the disordering of iron and chromium in the B sites, confirms previous observations. More ...
  • Mechanical properties of inorganic nanowire reinforced polymer–matrix composites 
    Vivekchand, S R C; Ramamurty, U; Rao, C N R (Institute of Physics Publishing Ltd, 2006-06-14)
    The mechanical properties of poly( vinyl alcohol) matrix composites incorporating SiC and Al2O3 nanowires (NWs) have been investigated. A marked increase in the elastic modulus (up to 90%) has been observed even with the ...
  • InMnO3: A biferroic 
    Serrao, Claudy Rayan; Krupanidhi, S B; Bhattacharjee, Joydeep; Waghmare, Umesh V; Kundu, Asish K; Rao, C N R (American Institute of Physics, 2006-10-01)
    InMnO3 which has a hexagonal structure similar to that of YMnO3 is found to show a canted antiferromagnetic behavior below 50 K (T-N) and a ferroelectric (FE) transition at 500 K accompanied by hystersis. We have determined ...

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