| | 3. | Heat transfer in high volume fraction CNT nanocomposites: Effects of inter-nanotube thermal resistance Original Research Article
Chemical Physics Letters, In Press, Accepted Manuscript, Available online 14 April 2011
Khoa Bui, Brian P. Grady, Dimitrios V. Papavassiliou
Graphical abstract
Highlights► Thermal properties of CNT composites simulated with Monte-Carlo methods. ► CNT-Polystyrene (PS) thermal resistance calculated with matching to experiments. ► Thermal resistance found to increase with temperature. ► CNT-CNT thermal resistance found to be almost 5 times the CNT-PS resistance. ► CNT-CNT thermal resistance is detrimental to heat transfer in high%vol composites.
| | | | 4. | Preparation of a durable superhydrophobic membrane by electrospinning poly (vinylidene fluoride) (PVDF) mixed with epoxy-siloxane modified SiO2 nanoparticles: A possible route to superhydrophobic surfaces with low water sliding angle and high water contact angle Original Research Article
Journal of Colloid and Interface Science, In Press, Accepted Manuscript, Available online 14 April 2011
Shuai Wang, Yapeng Li, Xiaoliang Fei, Mingda Sun, Chaoqun Zhang, Yaoxian Li, Qingbiao Yang, Xia Hong
Graphical abstractA durable superhydrophobic surface, on which epoxy-siloxane modified SiO2 nanopaticles inlayed in the surface of micro-sized PVDF, was successfully prepared by electrospinning. This film exhibited remarkable superhydrophobicity and prominent durability. Highlights► Durable superhydrophobic surfaces with high CA and low SA, on which the epoxy–siloxane modified SiO2 nanopaticles irregularly inlayed in the surface of the micro-sized PVDF mini-islands, were successfully fabricated by electrospinning. Several groups of precursor solutions with different mass ratios of modified SiO2 nanoparticles/PVDF (1.00:1, 1.25:1, 1.67:1, 2.50:1, 5.00:1) were prepared respectively. The dual-scale structure made of PVDF mini-islands and modified SiO2 nanoparticles on their surface is responsible for the superhydrophobicity and self-cleaning property. Epoxy–siloxane copolymer which is used to modify the surface of SiO2 nanoparticles makes the superhydrophobic membrane durable. ► Superhydrophobic membranes exhibited low water sliding angle (SA) and high water contact angle (CA) for remarkable superhydrophobicity. ► It is important that the SiO2 nanoparticles can not be apart from PVDF and washed away easily through the underwater immersion test so as to achieve the effect of durability. ► We believe that more superhydrophobic surfaces with various properties desired can be further explored to prepare in the future by mixing various substances modified nanoparticles.
| | | | 5. | Nanostructured Ag surface fabricated by femtosecond laser for surface-enhanced Raman scattering Original Research Article
Journal of Colloid and Interface Science, In Press, Accepted Manuscript, Available online 14 April 2011
Han-Wei Chang, Yu-Chen Tsai, Chung-Wei Cheng, Cen-Ying Lin, Yen-Wen Lin, Tzong-Ming Wu
Graphical abstractThe SERS intensity of R6G in aqueous solution at the prepared nanostructured Ag surface is 15 times greater than that of an untreated Ag substrate. Highlights► Femtosecond laser is effective for the preparation of SERS-active substrate ► Nanostructured Ag surface exhibits higher SERS intensity ► This approach is potential for qualification and quantification of low concentration molecules
| | | | 6. | Curcumin loaded biocompatible thermo-responsive polymeric nanoparticles for cancer drug delivery Original Research Article
Journal of Colloid and Interface Science, In Press, Accepted Manuscript, Available online 14 April 2011
N. Sanoj Rejinold, M. Muthunarayanan, V.V. Divyarani, P.R. Sreerekha, K.P. Chennazhi, S.V. Nair, H. Tamura, R. Jayakumar
Graphical abstract
Highlights► We developed curcumin loaded chitosan-g-poly (N-vinylcaprolactam) nanoparticles (TRCNPs) for cancer drug delivery. This polymeric system is having biodegradable, biocompatible and thermo-responsive property. This system highly efficient against cancer cells with minimal toxicity on normal cells under in vitro conditions.
| | | | 7. | Nanohybrids investigation by waveguide snom illumination mode Original Research Article
Journal of Luminescence, In Press, Accepted Manuscript, Available online 14 April 2011
Nayla El-Kork, Paul Moretti, Bernard Jacquier
Highlights► Waveguide SNOM (WSNOM) is proposed and proven successful for nanostructure imaging. ► Nanohybrids optical scattering and fluorescence signals are imaged by WSNOM. ► WSNOM permits achieving high resolution microscopy and spectroscopy.
| | | | 8. | White light emission from sonochemically synthesized rare earth doped ceria nanophosphors Original Research Article
Journal of Luminescence, In Press, Accepted Manuscript, Available online 14 April 2011
Dimple P. Dutta, N. Manoj, A.K. Tyagi
Highlights► Doped CeO2 nanophosphors could be synthesized by a simple sonochemical process. ► Characterization done using XRD, SEM, HRTEM, EDS and PL spectrophotometry. ► The nanoparticles have an unusual flower-like shape. ► Multicolor emissions could be obtained by altering the doping concentration. ► A white light emitting composition could be achieved.
| | | | 9. | Effect of surface modification on dielectric and magnetic properties of metal powder/polymer nanocomposites Original Research Article
Journal of Magnetism and Magnetic Materials, In Press, Accepted Manuscript, Available online 14 April 2011
Kensaku Sonoda, Merja Teirikangas, Jari Juuti, Yasuo Moriya, Heli Jantunen
Highlights► Metal/polymer composites from surface modified nano Co and Fe powders. ► We evaluated their electromagnetic properties at 1 GHz. ► The surface modification raised both ε’ and µ’. ► Especially, ε’ of nano-Fe composite was raised from 5.5 to 14 at ca. 15 vol.%. ► Particle dispersion, distribution and interphase play important roles in the effect.
| | | | 12. | Design of nanoscale molecular wire based on 3, 6-Diphenyl-1, 2, 4, 5-Tetrazine and Effect of external electric field on electron transfer in conjugated molecular wire Original Research Article
Physica E: Low-dimensional Systems and Nanostructures, In Press, Accepted Manuscript, Available online 14 April 2011
Z., Bayat | S., Danesh nia | S.J., Mahdizadeh
Graphical abstractThe electron transport characteristics of a 3, 6-Diphenyl-1, 2, 4, 5-Tetrazine (DPT) single molecular conductor are investigated via the density functional theory (DFT) method. HighlightsThe 3, 6-Diphenyl-1, 2, 4, 5-Tetrazine (DPT), acts as good "wire" for electron and charge transfer. Full geometry optimization, Au3_DPT_Au3 (M–L–DPT–L–M) complex is carried out within DFT, using the Gaussian 03 package. We compared the energies of HOMO, LUMO and the HOMO–LUMO Gap levels for DPT with eight different linkages. The shift of HOMO and LUMO can be attributed to the variation of the electron density when the gold clusters and the molecule bond. The reported orbital energies show that when the gold cluster and the DPTs bond the resulting complexes have lower HLG than the isolated DPTs.
| | | | 13. | Transport in nanoparticle chains influenced by reordering
Physics Letters A, In Press, Corrected Proof, Available online 14 April 2011
T. Lüdtke, P. Mirovsky, R. Hüther, L. Govor, G.H. Bauer, J. Parisi, R.J. Haug
Highlights► Fabrication of chains of ordered Au-nanoparticles. ► Contact these nanoparticles without further chemical treatment with probing tips inside an electron microscope. ► Observation of low-dimensional transport and Coulomb blockade. ► Reordering of nanoparticles due to the applied electric field between the tips.
| | | | 17. | Visualization of vortex core polarity in NiFe nanodots by tilted Fresnel images Original Research Article
Ultramicroscopy, In Press, Accepted Manuscript, Available online 14 April 2011
Duc-The Ngo, Stephen McVitie
Highlights► The sense of polarity appears as a bipolar white-black contrast in the difference image. ► It allows determining a core diameter of 16.5 ±2.5 nm as commonly seen in NiFe nanodots. ► Difference image in misaligned case shows characteristic behavior of bipolar contrast. ► Method is direct interpretation, resolution-free affect and more quantitative quantification.
| | | | 19. | Functionalizable Magnetic/Luminous Silicon/Bismuth Core/Shell Nanocrystalline particles Original Research Article
Chemical Physics Letters, In Press, Accepted Manuscript, Available online 13 April 2011
Aristides D. Zdetsis
Graphical abstract
Highlights► Bismuth-covered silicon nanocrystalline quantum dots can exhibit characteristics of magnetic nanoparticles and/or luminescent semiconductor dots, accompanied by manifestations of metal-insulator transition. ► These properties, can be critical for the development of nanoscale optoelectronic and opto-magnetic switches
| | | | 20. | Synthesis and Antibacterial Property of Hollow SiO2/Ag Nanocomposite Spheres Original Research Article
Journal of Colloid and Interface Science, In Press, Accepted Manuscript, Available online 13 April 2011
Guangxin Gu, Jiaxi Xu, Yanfei Wu, Min Chen, Limin Wu
Graphical abstract
Highlights► The Ag+ ions were in-situ reduced by the deprotonated silanol groups of the hollow SiO2 beads ► No extra reducing agents or catalysts were added during the reduction process. ► These hollow nanocomposite spheres showed excellent antibacterial ability.
| | | | 21. | Synthesis of copper-nickel nanoparticles prepared by mechanical milling for use in magnetic hyperthermia Original Research Article
Journal of Magnetism and Magnetic Materials, In Press, Accepted Manuscript, Available online 13 April 2011
Irena Ban, Janja Stergar, Miha Drofenik, Gregor Ferk, Darko Makovec
Highlights► The nanoparticles of CuxNi1−x were synthesized for the applications in magnetic hyperthermia. ► The generated heat can be controlled using nanoparticles with adaptable Curie temperature. ► The methodology for the synthesis and characterization of CuNi nanoparticles is reported. ► Structural properties, magnetic properties and temperature rises were investigated.
| | | | 22. | A comparative study of carbonate bands from nanocrystalline carbonated hydroxyapatites using FT-IR spectroscopy in the transmission and photoacoustic modes Original Research Article
Journal of Molecular Structure, In Press, Accepted Manuscript, Available online 13 April 2011
A. Kaflak, A. Ślósarczyk, W. Kolodziejski
Highlights► Nanocrystalline carbonated apatites (CHA) of the mixed type AB were studied using the IR spectroscopy in the transmission (TRANS) and photoacoustic (PAS) modes. For the first time, different A-carbonate configurations, A1 and A2, have been discovered in nanocrystalline CHA. New bands were found at 1387 and 884 cm-1 and assigned to carbonate ions in aqueous compartments and located on the crystal surface, respectively. The comparison of the TRANS and PAS IR spectra provides valuable information on distribution of carbonate ions in the apatite crystal lattice and their separation between the crystal interior and the crystal surface.
| | | | 23. | Nanoscratch studies of SiGe epitaxial layer damage on the Si substrate Original Research Article
Journal of Physics and Chemistry of Solids, In Press, Accepted Manuscript, Available online 13 April 2011
Derming Lian, Hua-Chiang Wen, Chien-Huang Tsai
Highlights► The scratching resistance damage of SiGe epitaxial layer was evaluated. ► The adhesive and cohesive failure mechanism of SiGe films is found by annealing treatments. ► The annealing treatment produced misfit dislocations as a significant wavy sliding surface.
| | | | 24. | The formation of oxide nanoparticles on the surface of natural clinoptilolite Original Research Article
Journal of Physics and Chemistry of Solids, In Press, Accepted Manuscript, Available online 13 April 2011
Nevenka Rajic, Djordje Stojakovic, Nina Daneu, Aleksander Recnik
Highlights► We present a simple method for the preparation of oxide nanoparticles. ► Oxide nanoparticles are crystallized by dehydration at the surface of natural clinoptilolite. ► Clinoptilolite lattice is a suitable carrier for oxide nanoparticles.
| | | | 25. | Localized Surface Plasmon Resonance of Cu@Cu2O core-shell nanoparticles: Absorption, Scattering and Luminescence Original Research Article
Physica B: Condensed Matter, In Press, Accepted Manuscript, Available online 13 April 2011
T. Ghodselahi, M.A. Vesaghi
Highlights► We present the effect of oxidization of Cu nanoparticle on their visible spectra particularly LSPR peak.► We consider Mie absorption of Cu@Cu2O core-shell, scattering from Cu2O shell and luminescence from Cu@Cu2O interface.► Cu core size, Cu2O shell thickness, dielectric coefficients of shell and host were estimated by fitting.► The curvature of extinction spectra is due to scattering that is more affected by shell size and host dielectric.► For Cu diameter above 4 nm, the shift of LSPR peak is more affected by shell dielectric coefficient.
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