Prof. C.N.R. Rao's Publications: Recent submissions

  • Dependence of the Properties of Magnetic Nanoparticles on the Interparticle Separation 
    Voggu, Rakesh; Kumar, N; Rao, C N R (American Chemical Society, 2008-11-20)
    Dependence of the magnetic properties of FePt nanoparticles with an average diameter, D, of 5 nm on the interparticle separation, d, has been investigated by employing different spacer molecules. The observed decrease in ...
  • Observation of local non-centrosymmetry in weakly biferroic YCrO3 
    Ramesha, K; Llobet, A; Proffen, Th; Serrao, C R; Rao, C N R (IOP Publishing Ltd, 2007-03-14)
    Using high-resolution neutron powder diffraction we have determined the average and local structure of YCrO3 in order to explain the recently reported properties of YCrO3. Unlike conventional ferroelectric systems, YCrO3 ...
  • Nanorotors using asymmetric inorganic nanorods in an optical trap 
    Khan, Manas; Sood, A K; Deepak, F L; Rao, C N R (IOP Publishing Ltd, 2006-06-14)
    We demonstrate how light force, irrespective of the polarization of the light, can be used to run a simple nanorotor. While the gradient force of a single beam optical trap is used to hold an asymmetric nanorod, we utilize ...
  • Multiferroic nature of charge-ordered rare earth manganites 
    Serrao, Claudy Rayan; Sundaresan, A; Rao, C N R (IOP Publishing Ltd, 2007-12-12)
    Charge-ordered rare earth manganites Nd0.5Ca0.5MnO3, La0.25Nd0.25Ca0.5 MnO3, Pr0.7Ca0.3MnO3 and Pr0.6Ca0.4MnO3 are found to exhibit dielectric constant anomalies around the charge-ordering or the antiferromagnetic transition ...
  • Uptake of H2 and CO2 by Graphene 
    Ghosh, Anupama; Subrahmanyam, K S; Krishna, Katla Sai; Datta, Sudipta; Govindaraj, A; Pati, Swapan K; Rao, C N R (American Chemical Society, 2008)
    Graphene samples prepared by the exfoliation of graphitic oxide and conversion of nanodiamond exhibit good hydrogen uptake at 1 atm, 77 K, the uptake going up to 1.7 wt %. The hydrogen uptake varies linearly with the surface ...
  • Pressure-induced phase transitions in nanocrystalline ReO3 
    Biswas, Kanishka; Muthu, D V S; Sood, A K; Kruger, M B; Chen, B; Rao, C N R (IOP Publishing Ltd, 2007-10-31)
    Pressure-induced phase transitions in the nanocrystals of ReO3 with an average diameter of similar to 12 nm have been investigated in detail by using synchrotron x-ray diffraction and the results compared with the literature ...
  • High-sensitivity hydrocarbon sensors based on tungsten oxide nanowires 
    Rout, Chandra Sekhar; Govindaraj, A; Rao, C N R (Royal Society of Chemistry, 2006)
    Hydrocarbon (LPG) sensors based on the nanostructures of V2O5 do not exhibit satisfactory characteristics, while sensors based on WO2.72 nanowires show high sensitivity ( similar to 1800) for 2000 ppm of LPG at 200 degrees ...
  • Study of the Transformations of Elemental Nanowires to Nanotubes of Metal Oxides and Chalcogenides through the Kirkendall Effect 
    Raidongia, Kalyan; Rao, C N R (American Chemical Society, 2008-09-04)
    We have employed the Kirkendall effect to transform elemental nanowires of metals and silicon to nanotubes of the corresponding oxides and chalcogenides, having prepared the metal nanowires by nebulized spray pyrolysis of ...
  • Use of Amorphous Carbon Nanotube Brushes as Templates to Fabricate GaN Nanotube Brushes and Related Materials 
    Dinesh, Jagadeesan; Eswaramoorthy, M; Rao, C N R (American Chemical Society, 2007-01-18)
    Amorphous carbon nanotube brushes were prepared by a simple method using glucose as the carbon precursor. The functional surfaces of these nanotubes were covered with gallium ions and then calcined to get gallium oxide ...
  • Nanostructured Peptide Fibrils Formed at the Organic-Aqueous Interface and Their Use as Templates To Prepare Inorganic Nanostructures 
    Biswas, Kanishka; Rao, C N R (American Chemical Society, 2009-04)
    Formation of fibril-type nanostructures of the Alzheimer's beta-amyloid diphenylalanine (L-Phe-L-Phe, FF) at the organic-aqueous interface and the factors affecting their structures have been investigated. Such nanostructures ...
  • Formation and Ordering of Gold Nanoparticles at the Toluene-Water Interface 
    Sanyal, Milan K; Agrawal, Ved V; Bera, Mrinal K; Kalyanikutty, K P; Daillant, Jean; Blot, Christian; Kubowicz, S; Konovalov, Oleg; Rao, C N R (American Chemical Society, 2008-02-14)
    Microscopic measurements that provide direct information in nanometer length scales are essential to obtain a proper understanding of the interfacial reactions that form nanostructured materials. We present here the results ...
  • Functionalization and solubilization of BN nanotubes by interaction with Lewis bases 
    Pal, Shrinwantu; Vivekchand, S R C; Govindaraj, A; Rao, C N R (Royal Society of Chemistry, 2007)
    By interaction with a trialkylamine or trialkylphosphine, BN nanotubes can be dispersed in a hydrocarbon medium with retention of the nanotube structure.
  • Hydrogel-assisted synthesis of nanotubes and nanorods of CdS, ZnS and CuS, showing some evidence for oriented attachment 
    Kalyanikutty, K P; Nikhila, M; Maitra, Uday; Rao, C N R (Elsevier Science BV, 2006-12-04)
    By carrying out the reaction of appropriate metal compounds with Na2S in the presence of a tripodal cholamide-based hydrogel, nanotubes and nanorods of US, ZnS and CuS have been obtained. The nanostructures have been ...
  • Surface-Enhanced Raman Spectra of Aza-aromatics on Nanocrystals of Metallic ReO3 
    Biswas, Kanishka; Bhat, S V; Rao, C N R (American Chemical Society, 2007-04-19)
    Surface-enhanced Raman spectra (SERS) of pyridine have been investigated on the surfaces of the metallic ReO3 nanocrystals with diameters in the range of 12-32.5 nm. On ReO3 nanocrystal surfaces, the Raman bands of pyridine ...
  • Extraordinary Sensitivity of the Electronic Structure and Properties of Single-Walled Carbon Nanotubes to Molecular Charge-Transfer 
    Voggu, Rakesh; Rout, Chandra Sekhar; Franklin, Aaron D; Fisher, Timothy S; Rao, C N R (American Chemical Society, 2008-08-28)
    Interaction of single-walled carbon nanotubes with electron-donor and -acceptor molecules causes significant changes in the electronic and Raman spectra. Electron-donating molecules such as tetrathiafulvalene and aniline ...
  • Water-solubilized aminoclay–metal nanoparticle composites and their novel properties 
    Datta, K K R; Eswaramoorthy, M; Rao, C N R (Royal Society of Chemistry, 2007)
    Nanoparticles of metals such as Au, Ag, Pd and Pt embedded in exfoliated sheets of aminoclays of the type R8Si8Mg6O16(OH)(4), where R = CH2CH2NH2 are entirely water soluble. These sheets of the composite come to the ...
  • Field emission properties of boron and nitrogen doped carbon nanotubes 
    Sharma, R B; Late, D J; Joag, D S; Govindaraj, A; Rao, C N R (Elsevier Science BV, 2006-09-08)
    Field electron emission (FE) properties of boron and nitrogen doped carbon nanotubes (CNTs) grown in situ on tungsten (W) tips and silicon substrates have been studied. For a total emission current of I mu A, the current ...
  • Soft chemical approaches to inorganic nanostructures 
    Rao, C N R; Agrawal, Ved Varun; Biswas, Kanishka; Gautam, Ujjal K; Ghosh, Moumita; Govindaraj, A; Kulkarni, G U; Kalyanikutty, K P; Sardar, Kripasindhu; Vivekchandi, S R C (International Union Of Pure Applied Chemistry, 2006-09)
    Chemical approaches have emerged as the preferred means to synthesize nanostructures of various inorganic materials due to superior control over size, shape, and surface functionality. This article provides an overview of ...
  • New routes to multiferroics 
    Rao, C N R; Serrao, Claudy Rayan (Royal Society of Chemistry, 2007)
    Multiferroic materials are those which possess both ferroelectric and ferromagnetic properties. Clearly, there is a contradiction here since ferromagnetism requires d-electrons while ferroelectricity generally occurs only ...
  • Covalent and noncovalent functionalisation and solubilisation of nanodiamond 
    Maitra, Urmimala; Gomathi, A; Rao, C N R (Taylor & Francis Ltd, 2008)
    Covalent functionalisation of nanodiamond has been carried out by employing several methods. One of them involves the reaction of acid-treated nanodiamond with thionyl chloride followed by reaction with a long-chain aliphatic ...

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