| | 1. | Analysis of “on” and “off” times for thermally driven VO2 metal-insulator transition nanoscale switching devices Original Research Article
Solid-State Electronics, In Press, Corrected Proof, Available online 6 May 2011
Yan Zhang, Shriram Ramanathan
Highlights► We estimate the switching characteristics of thermally-driven two-terminal VO2 devices. ►We use a simple resistance-capacitance thermal circuit model to explore the minimum switching time for both heating and cooling processes. ► Our study shows that the estimated switching time is on the order of ∼1ns for 20 nm VO2 films.
| | | | 4. | Near infrared transparent conducting CdO nanocrystallite films co-doped with boron and hydrogen Original Research Article
Current Applied Physics, In Press, Accepted Manuscript, Available online 5 May 2011
A.A., Dakhel
Graphical abstractHighlightsThe optical and structural investigation of CdO films codoped with B3+ and hydrogen ions show shrinking the bandgap by 25-28% and compresses the host CdO unit cell by about 1% compare to undoped bulk CdO. The utmost improvement of conduction parameter takes place with 7.9wt% boron doping so that the conductivity increases by about 46 times, mobility by about 5.6 times, and electronic concentration by about 8 times compare to H-doped CdO film. With 6-8% boron doping, largest carrier mobility (39-47 cm2/V.s) was obtained. These data show that CdO:B:H can be used in infrared transparent-conducting-oxide (IR-TCO) applications
| | | | 5. | Magnetic properties of one-dimensional embedded nickel nanostructures in gold nanowires Original Research Article
Current Applied Physics, In Press, Accepted Manuscript, Available online 5 May 2011
S., Ishrat | K., Maaz | Rong, Chen | Soo Hyun, Kim | M.H., Jung | Gil-Ho, Kim
Graphical abstractResearch Highlight► One dimensional Ni nanostructures embedded in Au have been successfully fabricated by electrochemical deposition in alumina templates. ► Structural characterization of the samples confirms the formation of single crystalline embedded nickel in gold segments. ► High coercivity and smaller saturation magnetization was observed for smaller Ni segments while an opposite trend was found for the larger segments.
| | | | 6. | Electrodeposition of nanostructured Ni(1-x)Mnx alloys films from chloride bath Original Research Article
Current Applied Physics, In Press, Accepted Manuscript, Available online 5 May 2011
R., Fathi | S., Sanjabi
Graphical abstractResearch Highlight► Nanostructured NiMn alloy thin films were obtained by electrodeposition in a chloride bath for the first time. ► The current density had a significant influence in changing of Mn content in deposits. By increasing the current density to 40 mA/cm2, Mn concentration was increased to 9.8 at% leading to the decreasing of grain size to 12.8 nm. ► MnCl2/NiCl2 concentration ratio had not practically effect on the changing of the alloy composition. ► Mn concentration in small amounts (up to 2 at%) improved the saturation magnetization(up to 50.5 emu/g) of pure nickel but with more Mn addition in deposits led to decreasing the MS. Maximum of HC was obtained in 1.1 at%Mn concentration and MR decreased by increasing the Mn content. ► The XRD patterns confirmed the presence of a substitution solid solution of FCC NiMn alloy, where at all Mn<10 at%, the Mn was totally dissolved in the Ni matrix.
| | | | 7. | New Insights into the structure of Pd-Au nanoparticles as revealed by aberration-corrected STEM Original Research Article
Journal of Crystal Growth, In Press, Accepted Manuscript, Available online 5 May 2011
Francis Leonard Deepak, Gilberto Casillas-Garcia, Rodrigo Esparza, H. Barron, Miguel Jose-Yacaman
Highlights► Aberration corrected STEM. ► High resolution spectral and chemical analysis. ► Structure and morphology of complex three-layered Pd-Au-Pd nanoparticles. ► New four-layered nanoparticles. ► Weak-beam dark field (WBDF) and nanobeam diffraction has been used in combination.
| | | | 8. | Self-assembled synthesis of Ag nanodendrites and their applications to SERS Original Research Article
Journal of Molecular Structure, In Press, Accepted Manuscript, Available online 5 May 2011
Xin Wang, Xiaoheng Liu, Xin Wang
Highlights► We fabricate dendritic Ag nanoparticles without employing reducing agent. ► The synthesized method is very simple without complicated equipment. ► The synthesized material has excellent SERS enhancement ability.
| | | | 10. | Novel In2O3 Nanostructures Fabricated by Controlling the Kinetics Factor for Field Emission Display Original Research Article
Physica E: Low-dimensional Systems and Nanostructures, In Press, Accepted Manuscript, Available online 5 May 2011
Yanjun Huang, Ke Yu, Zhe Xu, Ziqiang Zhu
Graphical AbstractNovel In2O3 nanostructures were synthesized, and their growth mechanisms were discussed. The field emission properties of an individual In2O3 nanostructure showed very good repeatability. Highlights► The field emission properties of an individual In2O3 nanostructure were measured. ► A unique structure of polygonal nanotower was synthesized for the first time. ► The saturation ratio plays an important role in the morphology of In2O3 structures.
| | | | 11. | Sedimentation of nanoparticles in nanoscale colloidal suspensions
Physics Letters A, In Press, Accepted Manuscript, Available online 5 May 2011
Suvankar Ganguly, Suman Chakraborty
Highlights► Sedimentation characteristics of nanoscale colloidal suspensions are studied. ► Effect of particle aggregation and break-up is considered. ► Nonmonotonic variation of sedimentation velocity with particle volume fraction is obtained. ► Numerical results compare well with experimental data reported in the literature.
| | | | 12. | Large-scale synthesis and the roles of growth conditions on the formation of Zn2GeO4 nanorods
Solid State Communications, In Press, Accepted Manuscript, Available online 5 May 2011
L.Z. Pei, Y. Yang, L.J. Yang, C.G. Fan, C.Z. Yuan, Qian-Feng Zhang
Highlights► Large-scale Zn2GeO4 nanorods have been prepared in the absence of any surfactants. ► The size of the Zn2GeO4 nanorods can be controlled by the growth conditions. ► The Zn2GeO4 nanorods exhibit good optical properties.
| | | | 14. | Hysteresis behaviors in a cylindrical Ising nanowire
Solid State Communications, In Press, Accepted Manuscript, Available online 5 May 2011
Mustafa Keskin, Numan Şarlı, Bayram Deviren
Highlights► The hysteresis behaviors of cylindrical Ising nanowire have been studied using EFT. ► The hysteresis curves are obtained for different reduced temperatures. ► The areas of the loops are decreasing with increasing of the reduced temperatures. ► Triple hysteresis behavior for the antiferromagnetic nanowire system is observed. ► The thermal behavior of coercivities and remanent magnetizations are investigated.
| | | | 15. | Study of the crystallographic architecture of corals at the nanoscale by scanning transmission x-ray microscopy and transmission electron microscopy Original Research Article
Ultramicroscopy, In Press, Accepted Manuscript, Available online 5 May 2011
Karim Benzerara, Nicolas Menguy, Martin Obst, Jarosław Stolarski, Maciej Mazur, Tolek Tylisczak, Gordon E. Brown Jr., Anders Meibom
Highlights►We investigated the crystallographic orientation of aragonite in a coral skeleton. ► We combined HRTEM and polarization-dependent synchrotron-based STXM imaging. ► Polarization-dependent synchrotron-based STXM imaging is presented as a new approach. ► We evidence the presence of mesocrystals in coral skeletons.
| | | | 17. | Hydration force due to the reduced screening of the electrostatic repulsion in few-nanometer-thick films Review Article
Current Opinion in Colloid & Interface Science, In Press, Accepted Manuscript, Available online 4 May 2011
Peter A., Kralchevsky | Krassimir D., Danov | Elka S., Basheva
Graphical abstractHydration force due to the reduced screening of the electrostatic repulsion in few-nanometer-thick films Research Highlights► Different models of the hydration repulsion were tested against experimental data. ► A new model with reduced screening of the electric field complies with the data. ► This model assumes that at small thicknesses the film contains only counterions. ► Then, the screening of the electric field is weaker and the repulsion is stronger. ► The regime of charge regulation, related to counterion condensation, takes place.
| | | | 18. | Preparation of poly(methyl methacrylate) grafted hydroxyapatite nanoparticles via reverse ATRP Original Research Article
Journal of Colloid and Interface Science, In Press, Accepted Manuscript, Available online 4 May 2011
Yan Wang, Yan Xiao, Xiujuan Huang, Meidong Lang
Graphical abstractCompared with HAP nanoparticles, the dispersibility of surface-grafted HAP with PMMA was significantly improved. Highlights► A combination of reverse atom transfer radical polymerization (reverse ATRP) and atom transfer radical polymerization (ATRP) was used to synthesis hydroxyapatite nanoparticles grafted with poly(methyl methacrylate) (PMMA). As the amount of grafted PMMA increased, the dispersibility of surface-grafted HAP and the compressive strength of HAP/PMMA composites were improved. Through our approach it can give HAP nanoparticles novel properties for perspective applications.
| | | | 19. | Controllable Synthesis and Luminescent Properties of Three-Dimensional Nanostructured CaWO4:Tb3+ Microspheres Original Research Article
Journal of Colloid and Interface Science, In Press, Accepted Manuscript, Available online 4 May 2011
Yue Tian, Baojiu Chen, Hongquan Yu, Ruinian Hua, Xiangping Li, Jiashi Sun, Lihong Cheng, Haiyang Zhong, Jinsu Zhang, Yanfeng Zheng, Tingting Yu, Libo Huang
Graphical abstractCaWO4:Tb3+ microspheres assembled by submicrospindles were synthesized via a mild sonochemical route with the aid of surfactant Polyglycol 600. The formation mechanism for the 3D-structured CaWO4:Tb3+ microspheres was studied. Highlights► CaWO4:Tb3+ microspheres assembled by submicrospindles were synthesized via a mild sonochemical route with the aid of surfactant Polyglycol 600 (PEG-600). The energy transfer processes from WO42- to Tb3+ and Tb3+ toTb3+ were studied based on the analysis of fluorescent decay and concentration quenching. The sonochemical route is a feasible route for preparing nano-/microstructured materials with special morphology.
| | | | 20. | Kinetics and thermodynamic study of aniline adsorption by multi-walled carbon nanotubes from aqueous solution Original Research Article
Journal of Colloid and Interface Science, In Press, Accepted Manuscript, Available online 4 May 2011
Hind Al-Johani, Mohamed Abdel Salam
Graphical abstractThis graph shows the Arrhenius plot of the pseudo second-order kinetics for the adsorption of aniline on different MWCNTs. Highlights► Multi-walled carbon nanotubes (MWCNTs) were used for the adsorptive removal of aniline. ► Adsorption was dependent on different factors such as MWCNTs dosage, contact time, aniline concentration, and solution pH and temperature. ► Kinetic study revealed that the adsorption followed the pseudo-second order. ► Adsorption of aniline occurs in two consecutive steps including a slow intra-particle diffusion of aniline molecules through the nanotubes. ► Thermodynamic studies indicated the spontaneity of the adsorption, exothermic nature of the adsorption, and the decrease in the randomness.
| | | | 21. | Controlling the size and morphology of anisotropic nanostructures of nickel borate using microemulsions and their magnetic properties Original Research Article
Journal of Colloid and Interface Science, In Press, Accepted Manuscript, Available online 4 May 2011
Menaka, Soma Sharma, Kandalam V. Ramanujachary, Samuel E. Lofland, Ashok K. Ganguli
Graphical abstractThe reverse micellar route has been used to control the shape and size of anisotropic nickel borate particles. The nanorods of lower diameter show four fold enhancement in magnetization. Highlights► The reverse micellar route has been used to control the shape and size of nickel borate nanoparticles. ► Uniform nanorods and nano-spindles of nickel borate have been synthesized for the first time. ► A magnetization enhancement of four fold was found in the surfactant mediated process.
| | | | 22. | Self-assembly of gold nanoparticles on functional organic molecular crystals Original Research Article
Journal of Colloid and Interface Science, In Press, Accepted Manuscript, Available online 4 May 2011
Silvia Trabattoni, Massimo Moret, Luciano Miozzo, Marcello Campione
Graphical abstractThe strong interaction between Au nanoparticles (NPs) and S-atoms promotes the adsorption of NPs at the crystal surface of 1,2,3,4-tetrafluoro-7-thiomethylacridine, as shown in AFM image (1 x 1 μm2). Highlights► NP depositions were carried out on two iso-structural tetrafluoroacridine crystals. ► Gold nanoparticles adsorb on organic crystal surface thanks to S-Au interaction. ► The substrate coverage, determined by AFM measurements, reaches value up to 13%. ► NPs distribute on the surface uniformly and aggregates appear increasing deposition time. ► Deposition and imaging have been done simultaneously by AFM equipped with fluid cell.
| | | | 23. | Facile fabrication of amphiphilic gold nanoparticles with V-shaped brushes from block copolymers with a trithiocarbonate group as the junction Original Research Article
Journal of Colloid and Interface Science, In Press, Accepted Manuscript, Available online 4 May 2011
Zhao-Li Wang, Jun-Ting Xu, Bin-Yang Du, Zhi-Qiang Fan
Graphical abstractAmphiphilic AuNPs with V-shaped brushes were prepared by grafting a PS-b-PEO block copolymer with a trithiocarbonate group as the junction to the Au surface. Highlights► A PS-b-PEO block copolymer with a trithiocarbonate group as the junction was prepared. ► AuNPs with V-shaped brushes (Au-V-brushes) were prepared by anchoring the trithiocarbonate group to the Au surface. ► The obtained Au-V-brushes are soluble in both water and organic solvent. ► The Au-V-brushes can transfer from the water into toluene or from toluene to the interface.
| | | | 24. | Frequency Analysis of Graphene Nanoribbon FET by Non-Equilibrium Green’s Function in Mode Space Original Research Article
Physica E: Low-dimensional Systems and Nanostructures, In Press, Accepted Manuscript, Available online 4 May 2011
H. Sarvari, R. Ghayour, E. Dastjerdy
Graphical AbstractThe GNRFET is analyzed for its high frequency applications. The edge effect is considered, where it has significant effects on the GNRFET parameters and behavior. Highlights► We have analyzed the graphene nanoribbon FET by non-equilibrium Green’s function. ► The device is analyzed in the mode space with and without the edge effect. ► The cut-off frequency, the gate capacitance and transconductance are calculated. ► The Ion/Ioff ratio versus oxide thickness of device is examined. ► The results show that the edge effect changes the device specifications considerably.
| | | | 25. | Micro/nano- tribological behaviors of crown-type phosphate ionic liquid ultrathin films on self-assemble monolayer modified silicon Original Research Article
Surface and Coatings Technology, In Press, Accepted Manuscript, Available online 4 May 2011
Jibin Pu, Dong Jiang, Yufei Mo, Liping Wang, Qunji Xue
Research Highlights► The novel dual-layer ultrathin lubrication films which contained both bonded SAMs and mobile crown-type phosphate ionic liquids with fluorine-free anion were formed on a silicon substrate by a two-step process. Steady self-assembled underlayer acts very important effects in enhancing load-carrying capacity of the ionic liquid ultrathin lubrication film. The synergic effect between flowable mobile ionic liquid uplayer and steady bonded SAMs plays a significant role in improving tribological properties of the ionic liquid lubrication film. ► The dual-layer system reduces meniscus effect resulted from excessive mobile ionic liquid molecules, which would lead to low micro/nano-friction coefficient of dual-layer films. ► The improved durability of dual-layer films is closely related to high load-carrying capacity of more densely packed and ordered self-assembled underlayer.
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