Publications

Publications Since 2010

[143] Modulating non-linear optical absorption through controlled graphitization of carbon nanostructures containing Fe3C-graphite core-shell nanoparticles; Rajeev Kumar, Ajay Kumar, Nancy Verma, A.V. Anupama, R. Philip, Balaram Sahoo; Carbon 153, 545 (2019)

[142] Enhanced bremsstrahlung X-ray emission from Ag nanoparticles irradiated by ultrashort laser pulses; Pranitha Sankar, Jyothis Thomas, H.D. Shashikala, R. Philip; Optical Materials 92, 30 (2019)

[141] Ultrashort and short pulse nonlinear optical investigations in thiolated nine-atom silver quantum clusters embedded in one-dimensional TiO2 nanotube matrix; Kishore Sridharan, Pranitha Sankar, R. Philip; Optical Materials 94, 53 (2019)

[140] Investigation of nonlinear optical and photocatalytic properties of sol–gel derived KBiFe2O5; Ranjan Rai, Agnes George, V Sai Muthukumar, K.B.R. Varma, R. Philip; Muralikrishna Molli; Journal of Materials Science: Materials in Electronics 30, 11451 (2019)

[139] Enhanced NLO activity of organic 2-methyl-5-nitro aniline crystal: Experimental and computational investigation with and without silver addition; Jerin Susan John, D. Sajan, P. Prabukanthan, R. Philip, Nithin Joy; Optics & Laser Technology 117, 416 (2019)

[138] Influence of MnCl2 on the properties of an amino acid complex single crystal-l-arginine perchlorate (LAPCl) for optical limiter applications; Prince Thomas, Rajendhar Junjuri, Nithin Joy, Michael Siemer, Manoj Kumar Gundawar, R. Philip, Catherina Al-Shamery; Journal of Materials Science: Materials in Electronics 30, 8407 (2019)

[137] Electron beam induced modifications in third harmonic process of spray coated Mn: ZnO nanostructures; Albin Antony, P. Poornesh, I.V. Kityk, K. Ozga, R. Philip, Ganesh Sanjeev, Vikash Chandra Petwal, Vijay Pal Verma, Jishnu Dwivedi; Oxide-based Materials and Devices X, 1091924 (2019)

[136] Methodical engineering of defects in MnXZn1-X O (x = 0.03, and 0.05) nanostructures by electron beam for nonlinear optical applications: A new insight; Albin Antony, P. Poornesh, Iwan Kityk, Katarzyna Ozga, J. Jedryka, R. Philip, Ganesh Sanjeev, Vikash Petwal, Vijay Verma, Jishnu Dwivedi; Ceramics International 45, 8988 (2019)

[135] Studies on growth and characterization of (E)-N′-[4-(dimethylamino) benzylidene]-4-hydroxybenzohydrazide hemihydrate: a nonlinear optical material; A. Subashini, Poornima Priayadharsani, K. Thamaraiselvi, V. Veeramani, Priya Rose, R. Philip, Helen Stoeckli-Evans, Journal of Materials Science : Materials in Electronics 30, 2638 (2019)

[134] Pulse width dependent dynamics of laser-induced plasma from a Ni thin film; Jinto Thomas, Hem Chandra Joshi, Ajai Kumar, R. Philip; Journal of Physics D: Applied Physics 52, 135201 (2019)

[133] Effect of laser beam size on the dynamics of ultrashort laser-produced aluminum plasma in vacuum; Pranitha Sankar, H.D. Shashikala, R. Philip; Physics of Plasmas 26, 013302 (2019)

[132] Synthesis, mesomorphic properties and nonlinear optical studies of alkyl and alkoxy phenylacetylene containing phenazine fused extended triphenylene discotic liquid crystalline dyes; Ashwathanarayana Gowda, Litwin Jacob, Alakananda Patra, Agnes George, R. Philip, Sandeep Kumar; Dyes and Pigments 160, 128 (2019)

[131] Novel phenazine fused triphenylene discotic liquid crystals: synthesis, characterisation, thermal, optical and nonlinear optical properties; Ashwathanarayana Gowda, Litwin Jacob, Nithin Joy, R. Philip, Sandeep Kumar; New Journal of Chemistry 42, 19034 (2018)

[130] Nonlinear optical properties of lead-free ferroelectric nanostructured perovskite; Sai Pavan Prashanth Sadhu, P W Jaschin, Sreekanth Perumbilavil, Anitta Rose Thomas, V Sai Muthukumar, R. Philip, K.B.R. Varma; Applied Physics B Lasers and Optics 124, 200 (2018)

[129] Theoretical and experimental approach to the investigation of hyperpolarizability and charge transfer characteristics of NLO active 2′,3,4,4′,5-pentamethoxy chalcone with silver atoms adsorbed; Jerin Susan John, D. Sajana, N. Chandrabhas, Nithin Joy, R. Philip; Optical Materials 84, 409 (2018)

[128] Effect of ambient gas pressure on nanosecond laser produced plasma on nickel thin film in a forward ablation geometry; Jinto Thomas, Hem Chandra Joshi, Ajai Kumar, R. Philip; Physics of Plasmas 25, 103108 (2018)

[127] Time-resolved optical emission spectroscopic studies of picosecond laser produced Cr plasma; Kavya H. Rao, N. Smijesh, N. Klemke, R. Philip, I.V. Litvinyuk, R.T. Sang; Physics of Plasmas 25, 063505 (2018)

[126] Enhancement of optical emission and ion currents in a laser produced silicon plasma by femtosecond laser-induced periodic surface structuring; K K. Anoop, Nancy Verma, Nithin Joy, S.S. Harilal, R. Philip; Physics of Plasmas 25, 063304 (2018)

[125] Direct femtosecond laser surface structuring of crystalline silicon at 400 nm; Jijil J.J. Nivas, K K. Anoop, Riccardo Bruzzese, R. Philip, Salvatore Amoruso; Applied Physics Letters 112, 121601 (2018)

[124] Thermal and nonlinear optical studies of newly synthesized EDOT based bent-core and hockey-stick like liquid crystals; Ashwathanarayana Gowda, Litwin Jacob; Nithin Joy, R. Philip, R. Pratibha, Sandeep Kumar; New Journal of Chemistry 42, 2047 (2018)

[123] Ion dynamics of a laser produced aluminium plasma at different ambient pressures; P. Sankar, H.D. Shashikala, R. Philip; Appl. Phys. A 124, 26 (2018)

[122] Enhanced Ultrafast Nonlinear Optical Response in Ferrite Core/Shell Nanostructures with Excellent Optical Limiting Performance; S. Perumbilavil, A. López-Ortega, G. K. Tiwari, J. Nogués, T. Endo, R. Philip; Small 14, 1701001 (2018)

[121] Optical nonlinearity and charge transfer analysis of pyrene adsorbed on silver: computational and experimental investigations; U Reeta Felscia, Beulah JM Rajkumar, Pranitha Sankar, R. Philip, M Briget Mary; Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 184, 286 (2017)

[120] Ultrafast and short pulse optical nonlinearity in isolated, sparingly sulfonated water soluble graphene; S. Perumbilavil, K. Sridharan, D. Koushik, P. Sankar, V.P.M. Pillai, R. Philip; Carbon 111, 283 (2017)

[119] Optical emission and dynamics of aluminum plasmas produced by ultrashort and short laser pulses; P. Sankar, J.J.J. Nivas, N. Smijesh, G. K. Tiwari, R. Philip; Analytical and Atomic Spectrometry 32, 1177 (2017)

[118] Spatio-temporal optimization of a laser produced Al-plasma: Generation of highly ionized species; N. Smijesh, K. H. Rao, N. Klemke, R. Philip, I. V. Litvinyuk, R. T. Sang; Physics of Plasmas 23, 113104 (2016)

[117] Laser fluence dependence on emission dynamics of ultrafast laser induced copper plasma; K.K. Anoop, S. S. Harilal, R. Philip, R. Bruzzese, S. Amoruso; Journal of Applied Physics 120, 185901 (2016)

[116] Ultrafast laser produced zinc plasma: Stark broadening of emission lines in nitrogen ambient; K.H. Rao, N. Smijesh, J.J.J. Nivas, R. Philip; Physics of Plasmas 23, 043503 (2016)

[115] Influence of pulse width on the laser ablation of zinc in nitrogen ambient; N.Smijesh, K. H. Rao, R. Philip; Applied Physics A 122, 460 (2016)

[114] An organic dye-polymer (phenol red-poly (vinyl alcohol)) composite architecture towards tunable -optical and -saturable absorption characteristics; S. Sreedhar, N. Illyaskutty, S. Sreedhanya, R. Philip, C. I. Muneera; Journal of Applied Physics 119, 193106 (2016)

[113] Nonlinear transmittance and optical power limiting in magnesium ferrite nanoparticles: effects of laser pulsewidth and particle size; S. Perumbilavil, K. Sridharan, A. R. Abraham, H. P. Janardhanan, N. Kalarikkal, R. Philip; RSC Advances 6, 106754 (2016)

[112] Study of nonlinear optical absorption properties of Sb2Se3 nanoparticles in the nanosecond and femtosecond excitation regime; M. Molli, P. Pradhan, D. Dutta, A. Jayaraman, A.B. Kademane, V.S. Muthukumar, V. Kamisetti, R. Philip; Applied Physics A 122, 549 (2016)

[111] Self-Assembly of Silver and Gold Nanoparticles in a Metal-Free Phthalocyanine Liquid Crystalline Matrix: Structural, Thermal, Electrical and Nonlinear Optical Characterization; A. N. Gowda, M. Kumar, A. R. Thomas, R. Philip, S. Kumar; Chemistry Select 1, 1361 (2016)

[110] Improved nonlinear optical and optical limiting properties in non-covalent functionalized reduced graphene oxide/silver nanoparticle (NF-RGO/Ag-NPs) hybrid; E.M. Sakho, O. S. Oluwafemi, P. Sreekanth, R. Philip, S. Thomas, N. Kalarikkal; Optical Materials 58, 476 (2016)

[109] Tunable emission and excited state absorption induced optical limiting in Tb2(MoO4)3: Sm3+/Eu3+ nanophosphors; K.P. Mani, S. Perumbilavil, G. Vimala, P.R. Biju, N.V. Unnikrishnan, M.A. Ittyachen, R. philip, C. Joseph; Optical Materials 62, 110 (2016)

[108] Rapid and facile synthesis of graphene oxide quantum dots with good linear and nonlinear optical properties; E.M. Sakho, O.S. Oluwafemi, S. Perumbilavil, R. Philip, M. S. Kala, S. Thomas, N. Kalarikkal; Journal of Materials Science: Materials in Electronics 27, 10926 (2016)

[107] Nonlinear optical properties of (1-x) CaFe2O4–xBaTiO3 composites; T. Woldu, B. Raneesh, P. Sreekanth, M.V. Ramana Reddy, R. Philip, N. Kalarikkal; Ceramics International 42, 11093 (2016)

[106] Optical nonlinearity in multi-ferroic bismuth ferrite; P.N. Francis, S. Dhanuskodi, M. Muneeswaran, A. R. Thomas, N.V. Giridharan; Journal of Alloys and Compounds 688, 796 (2016)

[105] Ultrafast optical nonlinearity and photoacoustic studies on chitosan–boron nitride nanotube composite films; N. Kuthirummal, R. Philip , A. Mohan , C. Jenks , N. Levi-Polyachenko; Optics Communications 371, 47 (2016)

[104] D-A-p-D Synthetic approach for thienyl chalcones – NLO – a structure  activity study; P.J. Tejkiran, M.S.B. Teja, P.S.S. Kumar, P. Sankar, R. Philip, S. Naveen, N.K. Lokanath, G. N. Rao; Journal of Photochemistry and Photobiology A: Chemistry 324, 33 (2016)

[103] White light Z-scan measurements of ultrafast optical nonlinearity in reduced graphene oxide nanosheets in the 400–700 nm region; S.Perumbilavil, P. Sankar, T. Priya Rose, R. Philip; Applied Physics Letters 107, 051104 (2015)

[102] Dynamics of neutrals and ions in an ultrafast laser produced Zn plasma; N. Smijesh, Kavya H. Rao, R. Philip; Physics of Plasmas 22, 033509 (2015)

[101] Nonlinear Optical Investigations in Nine-Atom Silver Quantum Clusters and Graphitic Carbon Nitride Nanosheets; K. Sridharan, P. Sreekanth, T. J. Park, R. Philip; Journal of Physical Chemistry C 119, 16314 (2015)

[100] Syntheses, Spectroscopic, Electrochemical, and Third-Order Nonlinear Optical Studies of a Hybrid Tris{ruthenium(alkynyl)/ (2-phenylpyridine)} iridium Complex; H. Zhao, P. V. Simpson, A. Barlow, G. J. Moxey, M. Morshedi, N. Roy, R. Philip, C. Zhang, M. P. Cifuentes, M. G. Humphrey; Chemistry A European Journal 21, 11843 (2015)

[99] Ensemble effect of intrinsic defects and Mn ions on the enhancement of third order nonlinearity of ZnO nanoparticles; S. Dhanuskodi, P. Rajeswari, P. Sreekanth, R. Philip; Nanotechnology 26, 275702 (2015)

[98] Nonlinear absorption and excited state dynamics of porphyrin and pthalocyanine in the presence of explosive molecules; P.T. Anusha, A.R. Thomas, R. Philip, S. V. Rao; Chemical Physics Letters 641, 23 (2015)

[97] Size dependent nonlinear optical absorption in BaTiO3 nanoparticles; T. Woldu, B. Raneesh, P. Sreekanth, M.V.R. Reddy, R. Philip, N. Kalarikkal; Chemical Physics Letters 625, 58 (2015)

[96] Dopant-configuration controlled carrier scattering in Graphene; B. Anand, M. Karakaya, G. Prakash, S. S. S. Sai, R. Philip, P. Ayala, A. Srivastava, A. K. Sood, A. M. Rao, R. Podila; RSC Advances 5, 59556 (2015)

[95] Morphology dependent nanosecond and ultrafast optical power limiting of CdO nanomorphotypes; P. Thomas, P. Sreekanth, R. Philip, K. E. Abraham; RSC Advances 5, 35017 (2015)

[94] Nonlinear optical interactions of Co: ZnO nanoparticles in continuous and pulsed mode of operations; R. Ponnusamy, D. Sivasubramanian, P. Sreekanth, G. Vinitha, R. Philip, G. M. Bhalerao; RSC Advances 5, 80756 (2015)

[93] Electric, magnetic and optical limiting (short pulse and ultrafast) studies in phase pure (1 -x)BiFeO3–xNaNbO3 multiferroic nanocomposite synthesized by the pechini method; R.P. Ummer, P. Sreekanth, B. Raneesh, R. Philip, D. Rouxel, S. Thomas and N. Kalarikkal; RSC Advances 5, 67157 (2015)

[92] Enhanced multi-phonon Raman scattering and nonlinear optical power limiting in ZnO: Au nanostructures; R. Udayabhaskar, B. Karthikeyen, P. Sreekanth, R. Philip; RSC Advances 5, 13590 (2015)

[91] Cubic to amorphous transformation of Se in silica with improved ultrafast optical nonlinearity; K.A. Ann Mary, N.V. Unnikrishnan, R. Philip; RSC Advances 5, 14034 (2015)

[90] Composition-structure–physical property relationship and nonlinear optical properties of multiferroic hexagonal ErMn1- xCrxO3 nanoparticles; B. Raneesh, K. Nandakumar, A. Saha, D. Das, H. Soumya, J. Philip, P. Sreekanth, R. Philip; RSC Advances 5, 12480 (2015)

[89] Synthesis, characterization and nonlinear optical studies of novel blue-light emitting room temperature truxene discotic liquid crystals; D.R. Vinayakumara, M. Kumar, P. Sreekanth, R. Philip, S. Kumar; RSC Advances 5, 26596 (2015)

[88] l-Phenylalanine functionalized silver nanoparticles: Photocatalytic and nonlinear optical applications; M. Nidya, M. Umadevi, P. Sankar, R. Philip, BJM Rajkumar; Optical Materials 42, 152 (2015)

[87] Synthesis, crystal structure, vibrational spectral analysis and Z-scan studies of a new organic crystal N,N’ dimethylurea ninhydrin: A scaled quantum mechanical force field study; J. S. John, D. Sajan, T. Umadevi, K. Chaitanya, P. Sankar, R. Philip; Optical Materials 48, 233 (2015)

[86] Ultrafast and short pulse optical nonlinearities of meso-tetrakis-(2,3,5,6-tetrafluoro-N,N,N-trimethyl-4-aniliniumyl) porphyrin and its metal complexes; N.K.S. Narendran, R. Soman, P. Sankar, C. Arunkumar, K. Chandrasekharan; Optical Materials 49, 59 (2015)

[85] Nonlinear optical property and fluorescence quenching behavior of PVP capped ZnS nanoparticles co-doped with Mn2+ and Sm3+; S. Prasanth, P. Irshad, D. Rithesh Raj, T.V. Vineeshkumar, R. Philip, C. Sudarsanakumar; Journal of Luminescence 166, 167 (2015)

[84] One-pot synthesis of silica-hybridized Ag2S–CuS nanocomposites with tunable nonlinear optical properties; K.A. Ann Mary, N.V. Unnikrishnan, R. Philip; Materials Research Bulletin 70, 321 (2015)

[83] Defects related emission and nanosecond optical power limiting in CuS quantum dots; K.A. Ann Mary, N.V. Unnikrishnan, R. Philip; Physica E 74, 151 (2015)

[82] Acceleration of neutrals in a nanosecond laser produced nickel plasma; N. Smijesh, K. Chandrasekharan, R. Philip; Physics of Plasmas 21, 123507 (2014)

[81] Switching of absorptive nonlinearity from reverse saturation to saturation in polymer-ZnO nanotop composite films; P.C. Haripadmam, H. John, R. Philip, P. Gopinath; Applied Physics Letters 105, 221102 (2014)

[80] Enhanced optical limiting in polystyrene–ZnO nanotop composite films; P.C. Haripadmam, H. John, R. Philip, P. Gopinath; Optics Letters 39, 474 (2014)

[79] Time of flight emission spectroscopy of laser produced nickel plasma: Short-pulse and ultrafast excitations; N. Smijesh, K. Chandrasekharan, J.C. Joshi, R. Philip; Journal of Applied Physics 116, 013301 (2014)

[78] Photorefractive performances of a graphene doped PATPD/7-DCST/ECZ composite; P. Chantharasupawong, C. W. Christenson, R. Philip, L. Zhai, J. Winiarz, M. Yamamoto, L. Tetard, R. R. Nair and J. Thomas; Journal of Materials Chemistry C 2, 7639 (2014)

[77] Transition metal (Fe, Co and Ni) oxide nanoparticles grafted graphitic carbon nitrides as efficient optical limiters and recyclable photocatalysts; K. Sridharan, T. Kuriakose, R. Philip, T. J. Park; Applied Surface Science 308, 139 (2014)

[76] Role of surface states and defects in the ultrafast nonlinear optical properties of CuS quantum dots; K.A. Ann Mary, N.V. Unnikrishnan, R. Philip; APL Materials 2, 076104 (2014)

[75] The role of defects in the nonlinear optical absorption behavior of carbon and ZnO nanostructures; B. Anand, S.R. Krishnan, R. Podila, S.S.S. Sai, A.M. Rao, R. Philip; Physical Chemistry Chemical Physics 16, 8168 (2014) (Perspective Article)

[74] Defect engineering in ZnO nanocones for visible photoconductivity and nonlinear absorption; M.K. Kavitha, K. B. Jinesh, R. Philip, P. Gopinath and H. John; Physical Chemistry Chemical Physics 16, 25093 (2014)

[73] Energy dependent saturable and reverse saturable absorption in cube-like polyaniline/polymethyl methacrylate film; R. Thekkayil, R. Philip, P. Gopinath, H. John; Materials Chemistry and Physics 146, 218 (2014)

[72] Anomalous growth of multi-phased and multi-dimensional Manganese oxide–Metal (Fe, Co and Ni) oxide nanostructures: Synthesis and optical limiting properties; K. Sridharan, N. Roy, R. Philip, T.J. Park; Journal of Alloys and Compounds 611, 82 (2014)

[71] Structural and optical studies of Zn1- xCdxS quantum dots synthesized by in situ technique in PVA matrix; T.V. Vineeshkumar, D.R. Raj, S. Prasanth, N.V. Unnikrishnan, R. Philip, C. Sudarshanakumar; Optical Materials 37, 439 (2014)

[70] Impurity mediated large three photon absorption in ZnS: Cu nanophosphors; R. Sreeja, K. Sridharan, R. Philip, M.K. Jayaraj; Optical Materials 36, 861 (2014)

[69] Spectral, thermal and optical properties of N, N’-Bis (4-chlorobenzylidene)-3, 3′-dimethoxybiphenyl-4, 4′-diamine; A. Subashini, P. Rose, R. Philip, H. Stoeckli-Evans, K. Ramamurthi, R. Ramesh Babu; Optics & Laser Technology 66, 22 (2014)

[68] Synthesis and spectroscopic characterization of copper zinc aluminum nanoferrite particles; S. L. Reddy, T. R. Reddy, N. Roy, R. Philip, O. A. Montero, T. Endo, R. L. Frost; Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 127, 361 (2014)

[67] Plasmonic and Nonlinear Optical Absorption Properties of Ag: ZrO2 Nanocomposite Thin Films; M. Kumar, C.S.S. Sandeep, G. Kumar, Y.K. Mishra, R. Philip, G.B. Reddy; Plasmonics 9, 129 (2014)

[66] Emission dynamics of an expanding ultrafast-laser produced Zn plasma under different ambient pressures; N. Smijesh, R. Philip; Journal of Applied Physics 114, 093301 (2013)

[65] Spectral dispersion of ultrafast optical limiting in Coumarin-120 by white-light continuum Z-scan; B. Anand, N. Roy, S.S.S. Sai, R. Philip; Applied Physics Letters 102, 203302 (2013)

[64] Ultrafast optical nonlinearity in nanostructured selenium allotropes; K.A. Ann Mary, N.V. Unnikrishnan, R. Philip; Chemical Physics Letters 588, 136 (2013)

[63] Synthesis of reduced graphene oxide–ZnO hybrid with enhanced optical limiting properties; M.K. Kavitha, H. John, P. Gopinath, R. Philip; Journal of Materials Chemistry C 1, 3669 (2013)

[62] Optical diode action from axially asymmetric nonlinearity in an all-carbon solid-state device; B. Anand, R. Podila, K. Lingam, S.R. Krishnan, S. S. S. Sai, R. Philip, A.M. Rao; Nano Letters 13, 5771 (2013)

[61] Non-hydrothermal synthesis and optical limiting properties of one-dimensional Se/C, Te/C and Se–Te/C core–shell nanostructures; K. Sridharan, M.S. Ollakkan, R. Philip, T.J. Park; Carbon 63, 263 (2013)

[60] Nonlinear optical properties of boron doped single-walled carbon nanotubes; B. Anand, R. Podila, P. Ayala, L. Oliveira, R. Philip, S.S.S. Sai, A.A. Zakhidov, A.M. Rao; Nanoscale 5, 7271 (2013)

[59] Organic dye impregnated poly (vinyl alcohol) nanocomposite as an efficient optical limiter: structure, morphology and photophysical properties; S. Sreeja, S. Sreedhanya, N. Smijesh, R. Philip, C.I. Muneera; Journal of Materials Chemistry C 1, 3851 (2013)

[58] Structural evaluation and nonlinear optical properties of Ni/NiO, Ni/NiCo2O4 and Co/Co3O4 nanocomposites; K.M. Rahulan, N. Padmanathan, R. Philip, S. Balamurugan, C.C. Kanakam; Applied Surface Science 282, 656 (2013)

[57] Ultrafast optical nonlinearity, electronic absorption, vibrational spectra and solvent effect studies of Ninhydrin; D. Sajan, T.U. Devi, K. Safakath, R. Philip, I. Nemec, M. Karabacak; Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 109, 331 (2013)

[56] Enhanced Optical Limiting in Functionalized Hydrogen Exfoliated Graphene and its Metal Hybrids; B. Anand, A. Kaniyoor, S.Siva Sankara Sai, R. Philip and S. Ramaprabhu; Journal of Materials Chemistry C 1, 2773 (2013)

[55] ZnO Modified MoO3 Nano- Rods, Wires, Belts and Tubes: Photophysical and Non-Linear Optical Properties; N. Illyaskutty, S. Sreedhar; H. Kohler, R. Philip, V. Rajan, V.P.M. Pillai; Journal of Physical Chemistry C 117, 7818 (2013)

[54] Single step synthesis and optical limiting properties of Ni-Ag and Fe-Ag bimetallic nanoparticles; K. Sridharan, T. Endo, S. Cho, J. Kim, T. J. Park, R. Philip; Optical Materials 35, 860 (2013)

[53] Synthesis, growth and characterization of 4-bromo-4’nitrobenzylidene aniline (BNBA): a novel nonlinear optical material with a (3+1)-dimensional incommensurately modulated structure; A. Subashini, S. Leela, K. Ramamurthi, A. Arakcheeva, H. Stoeckli-Evans, V. Petricek, G. Chapuis, P. Pattison, P. Reji; CrystEngComm 15, 2474 (2013)

[52] Simultaneous Optical and Photoacoustic Measurement of Nonlinear Absorption; P. Chantharasupawong, R. Philip, J. Thomas; Applied Physics Letters 102, 041116 (2013)

[51] Multi-photon absorption effect and intra-molecular charge transfer of donor-p-acceptor chromophore ethyl p-amino benzoate; D. Sajan, N. Vijayan, K. Safakath, R. Philip, M. Karabacak; Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 108, 197 (2013)

[50] Three-photon absorption and vibrational spectroscopic study of 2-methylamino-5-chlorobenzophenone; D. Sajan, K. Chaitanya, K. Safakath, R. Philip, T. Suthan, N.P. Rajesh; Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 106, 253 (2013)

[49] Size-dependent optical properties of Au nanorods; S.L. Smitha, K.G.Gopchandran, N.Smijesh, R. Philip; Progress in Natural Science: Materials International 23, 36 (2013)

[48] Synthesis, growth, and characterization of iminodiacetic acid monohydrochloride: A semi-organic single crystal for optical limiting applications; N. Vijayan, N. Rani, G. Madhurambal, G. Bhagavannarayana, B. Rathi, R. Philip, K. Safakath, S. C. Mojumdar; Journal of Thermal Analysis and Calorimetry, DOI 10.1007/s10973-013-3041-3 (2013)

[47] Novel N-substituted-5-phenyl-1H-pyrazole-4-ethyl carboxylates as potential NLO materials; B. Chandrakantha, A. M. Isloor, K. Sridharan, R. Philip, P. Shetty, M. Padaki; Arabian Journal of Chemistry 6, 97 (2013)

[46] Evolution of nonlinear optical properties: from gold atomic clusters to plasmonic nanocrystals; R. Philip, P. Chantharasupawong, H. Qian, R. Jin and J. Thomas; Nano Letters 12, 4661 (2012)

[45] Optical power limiting in fluorinated graphene oxide: An insight into the nonlinear optical properties; P. Chantharasupawong, R. Philip, N. T. Narayanan, P.M. Sudeep, A. Mathkar, P.M. Ajayan, J.Thomas; Journal of Physical Chemistry C 116, 25955 (2012)

[44] Enhanced optical limiting in nanosized mixed zinc ferrites; P. Chantharasupawong, R. Philip, T. Endo, J. Thomas; Applied Physics Letters 100, 221108 (2012)

[43] Enhanced optical nonlinearity in b-AgVO3 nanobelts on decoration with Ag nanoparticles; M.R. Parida, C. Vijayan, C.S. Rout, C.S.S. Sandeep, R. Philip; Applied Physics Letters 100, 121119 (2012)

[42] Defect Induced Changes in the Linear and Non-Linear Optical Properties of ZnO Nanotetrapods; M.Egblewogbe, B. Anand, R. Podila, R. Philip, S.S.S. Sai, A.M. Rao; Materials Express 2, 351 (2012)

[41] X-ray topography, photopyroelectric and two-photon absorption studies on solution grown benzimidazole single crystal; N. Vijayan, G. Bhagavannarayana, S.K. Halder, S. Verma, J. Philip, R. Philip, B. Rathi; Applied Physics A 110, 55 (2012)

[40] A comparative study on the optical limiting properties of different nano spinel ferrites with Z-scan technique; J.J. Thomas, S. Krishnan, K. Sridharan, R. Philip and K. Nandakumar; Materials Research Bulletin 47, 1855 (2012)

[39] Investigations on the electrical, thermal and optical properties of the nonlinear optical allylthiourea mercury chloride single crystal; G. Sreekanth, S. Chandralingam, J. Philip, S. Jayalakshmy, R. Philip, K. Sridharan, S. R. Kumar, G.P. Joseph; Materials Research Bulletin 47, 4043 (2012)

[38] Synthesis and optical limiting studies of HA(P) and HA(P)@SiO2 core-shell nanoparticles; M.K. Rahulan, G. Vinitha, S. Ganesan, R. Philip and P. Aruna; Journal of Materials Science-Materials in Electronics 23, 877 (2012)

[37] Hetero-epitaxial Growth of Cubic La(Sr)MnO3 on Hexagonal ZnO, In-Plane Orientations of La(Sr)MnO3 (001), (110), and (111) Phases; K.Uehara, A. Okada, A. Okamoto, M. Yokura, S. L. Reddy, S. Kobayashi, K. Inaba, N. Iwata, R. Philip, H. Kezuka, M. Matsui, and T. Endo; Japanese  Journal of Applied Physics 51,  11PG07 (2012)

[36] Effects of disorder on the optical properties of CVD grown polycrystalline Graphene; R. Podila, B. Anand, J.T. Spear, P. Puneet, R. Philip, S. Siva Sankara Sai, A.M. Rao; Nanoscale 4, 1770 (2012)

[35] Near-resonant two-photon absorption in luminescent CdTe quantum dots; K. Jayakrishna, C.S.S. Sandeep, R. Philip, K.S.R.K. Rao; Applied Physics Letters 100, 081901 (2012)

[34] Two-photon assisted excited state absorption in multiferroic YCrO3 nanoparticles; K. Shiji, C.S.S. Sandeep, R. Philip, N. Kalarikkal; Chemical Physics Letters 529, 59 (2012)

[33] Plasmonic, low frequency Raman and nonlinear optical limiting studies in copper-silica nanocomposites; S. Mohapatra, Y.K. Mishra, A.M. Warrier, R. Philip, S. Sahoo, A.K. Arora, D.K. Avasthi; Plasmonics 7, 25 (2012)

[32] Synthesis and nonlinear optical properties of Lead Telluride nanorods; K. Sridharan, V. Tamilselvan, D. Yuvaraj, K.N. Rao, R. Philip; Optical Materials 34, 639 (2012)

[31] Optical limiting characteristics in metal-organic co-ordination compound:Bis [1-ethyl-2, 6-dimethyl-4(1H)-4-oxy pyridinium] dichloro zinc (II); A. Philominal, S. Dhanuskodi, R. Philip; Current Applied Physics 12, 401 (2012)

[30] Twisted Intramolecular Charge Transfer in the semi-organic NLO material Sodium Acid Phthalate Hemihydrate: Vibrational Spectroscopy and Z-Scan Study; D. Sajan, N. Vijayan, K. Safakath, R. Philip, J. I. Hubert; Journal of Physical Chemistry A 115, 8216 (2011)

[29] Improved optical limiting in dispersible carbon nanotubes and their metal oxide hybrids; B. Anand, S.A. Ntim, V.S. Muthukumar, S. Sivasankara Sai, R. Philip, S. Mitra; Carbon 49, 4767 (2011)

[28] Nonlinear and magneto-optic transmission studies on magnetic nanofluids of non-interacting metallic nickel nanoparticles; M.A.P. Reena, C.S.S. Sandeep, T.N. Narayanan, R. Philip, P. Maloney, P.M. Ajayan, M.R. Anantharaman; Nanotechnology 22, 375702 (2011)

[27] Photoinduced transparency of effective three photon absorption coefficient for femtosecond laser pulses in Ge16As29Se55 thin films; A.R. Barik, K.V. Adarsh, C.S.S. Sandeep, R. Philip, D. Zhao, H. Jain; Applied Physics Letters 98, 201111 (2011)

[26] Nonlinear absorption and photoluminescence emission in nanocomposite films of Fuchsine Basic dye-polymer system; G. Sreekumar, P.G. Louie Frobel, S. Sreeja, S.R. Suresh, S. Mayadevi, C.I. Muneera, C.S.S. Sandeep, R. Philip, C. Mukharjee; Chemical Physics Letters 506, 61 (2011)

[25] Second harmonic chalcone crystal: synthesis, growth and characterization; E.D. D’Silva, D.N. Rao, R. Philip, R.J. Butcher, Rajnikant, S.M. Dharmaprakash; Physica B 406, 2206 (2011)

[24] Design and synthesis of a new thiophene based donor-acceptor type conjugated polymer with large third order nonlinear optical activity; K.A.V. Murthy, A.A. Vasudeva, M.S. Sunitha, K.A. Ann Mary, R. Philip; Synthetic Metals 161, 1699 (2011)

[23] Nonlinear optical properties of nanosized rare-earth-doped strontium barium niobate ceramics; J. Nuja, C.S.S. Sandeep, P. Reji, K. Nandakumar; Spectroscopy Letters 44, 334 (2011)

[22] An open-aperture z-scan study of Sr2CeO4 blue phosphor; R. Seema, C.S.S. Sandeep, R. Philip, N. Kalarikkal; Journal of Alloys and Compounds 509, 8573 (2011)

[21] Nonlinear optical characterization of new thiophene based conjugated polymers for photonic switching applications; H. Pramod Kumar, A.A. Vasudeva, M.G. Manjunatha, C.S.S. Sandeep, R. Philip; Advances in Polymer Technology 30, 312 (2011)

[20] Synthesis, electrochemical and optical studies of new cyanopyridine based conjugated polymers as potential fluorescent materials; K.A. Vishnumurthy, M.S. Sunitha, K. Safakath, R. Philip, A.V. Adhikari; Polymer 52, 4174 (2011)

[19] Synthesis and nonlinear optical characterization of new 1,3,4-oxadiazoles; A, Chandrakantha, A.M. Isloor, R. Philip, M. Mohesh, P. Shetty and A.M. Vijesh; Bulletin of Materials Science 34, 887 (2011)

[18] Evidence for surface states in pristine and Co-doped ZnO nanostructures: magnetization and nonlinear optical studies; R. Podila, B. Anand, J. P. West, R. Philip, S.S.S. Sai, J. He, M. Skove, S. Hwu, S. Tewari, A. M. Rao; Nanotechnology 22, 095703 (2011)

[17] Tunability of third order nonlinear absorption in (Pb,La)(Zr,Ti)O3 thin films; D. Ambika, V. Kumar, C.S.S. Sandeep, R. Philip; Applied Physics Letters 98, 011903 (2011)

[16] Spectrally broadened excitonic absorption and enhanced optical nonlinearities in Dy3+ doped ZnO nanoparticles; B. Karthikeyan, C.S.S. Sandeep, T. Pandiyarajan, P. Venkatesan, R. Philip; Applied Physics A 102, 115 (2011)

[15] Synthesis, characterization and third-order nonlinear optical studies of copper complexes containing 1,10-phenanthroline-5,6-dione and triphenylphosphine ligands; B.J. Rudresha, B. R. Bhat, H.C.S. Kumar, K.I.S. Kumar, K. Safakath, R. Philip; Synthetic Metals 161, 535 (2011)

[14] Mixing Does the Magic: A Rapid Synthesis of High Surface Area Noble Metal Nanosponges showing Broadband Nonlinear Optical Response; K.S. Krishna, C.S.S. Sandeep, R. Philip, M. Eswaramoorthy; ACS Nano 4, 2681 (2010)

[13] Synthesis, Characterization N, N’-bis(2-hydroxynaphthalidene)phenylene-1,2-diamine) of M (M= Ni(II), Zn(II) and Fe (II)) Schiff-Base Complexes and their Non-linear optical studies by Z scan technique; H.C. Sampath  Kumar, B.R. Bhat, B.J. Rudresha, R. Ravindra, R. Philip; Chemical Physics Letters 494, 95 (2010)

[12] Room temperature ferromagnetism and optical limiting in V2O5 nanoflowers synthesized by a novel method; M. R. Parida, C. Vijayan, C.S. Rout, C.S.S. Sandeep, R. Philip, P.C. Desmukh; Journal of Physical Chemistry C 115, 112 (2010)

[11] Optical limiting properties of CdS nanowires; V. Sai Muthukumar, J. Reppert, C.S.S. Sandeep, S. Sivaramakrishnan, R. Podila, N. Kuthirummal, S.Siva Sankara Sai, K. Venkataramaniah, R. Philip, A. M. Rao; Optics Communications 283, 4104 (2010)

[10] Optical nonlinearity in Lead Sulfide microtowers; V.Tamilselvan, K. Sridharan, K. Narasimha Rao, R. Philip; Journal of Physics D: Applied Physics 43, 385402 (2010)

[09] Highly conductive and transparent laser ablated nanostructured Al:ZnO thin films; R. Vinodkumar, I. Navas, S.R. Chalana, K.G. Gopchandran, V. Ganesan, R. Philip, S.K. Sudheer, and V.P.M. Pillai; Applied Surface Science 257, 708 (2010)

[08] Effect of Cadmium oxide incorporation on the microstructural and optical properties of pulsed laser deposited nanostructured ZnO thin films; R. Vinodkumar, K.J. Lethy, P.R Arunkumar, R.R. Krishnan, N.V. Pillai, V.P.M. Pillai, R. Philip; Materials Chemistry and Physics 121, 406 (2010)

[07] Optical Nonlinearity in NiFe2O4 nanoparticles; K. Sridharan, M. Agarwal, J. Philip, T. Endo, R. Philip; Transactions of the Materials Research Society of Japan 35, 159 (2010)

[06] Novel poly(3,4-dialkoxythiophene)s carrying 1,3,4-oxadiazolyl-biphenyl moieties: synthesis and nonlinear optical studies; P.K. Hegde, A.V. Adhikari, M.G. Manjunatha, C.S.S. Sandeep, R. Philip; Polymer International 60, 112 (2010)

[05] A New Nonlinear Optically Active Donor-Acceptor-Type Conjugated Polymer: Synthesis and Electrochemical and Optical Characterization; M. G. Manjunatha, A. V. Adhikari, P.K. Hegde, C.S.S. Sandeep, R. Philip; Journal of Electronic Materials 39, 2711 (2010)

[04] Nonlinear Optical Studies on New Conjugated Poly{2,2l-(3,4-dialkoxythiophene-2,5-diyl)bis[5-(2-thienyl)-1,3,4-oxadiazole]}s; P.K. Hegde, A.V. Adhikari, M.G. Manjunatha, C.S.S. Sandeep, R. Philip; Journal of Applied Polymer Science 117, 2641 (2010)

[03] Synthesis and third order optical nonlinearity studies of the donor-acceptor conjugated polymer, poly(2-[3,4-didodecyloxy-5-(1,3,4-oxadiazol-2-yl)thiophen-2-yl]-5-phenyl-1,3,4-oxadiazole) and a polymer/TiO2 nanocomposite; M.G. Murali, M.G. Ramya, D. Udayakumar, N.B. Lakshmi, R. Philip; Synthetic Metals 160, 2520 (2010)

[02] A new donor-acceptor type conjugative poly{2-[4-(1-cyanoethenyl)phenyl]-3-(3,4-didodecyloxythiophen-2-yl)prop-2-enenitrile}: Synthesis and NLO studies; P.K. Hegde, A.V. Adhikari, M.G. Manjunatha, C.S.S. Sandeep, R. Philip; Synthetic Metals 160, 1712 (2010)

[01] Synthesis and characterization of a new NLO-active donor-acceptor-type conjugated polymer derived from 3,4-diphenylthiophene; M.G. Manjunatha, A. V. Adhikari, P. K. Hegde, C.S.S. Sandeep, R. Philip; Journal of Polymer Research 17, 495 (2010)

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