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Chen Kui - - 2014
Tumor-associated lymphatics and lymphangiogenesis have been shown to play important roles in promoting tumor growth and metastasis. However, the lymphatic system has received much less attention as a target of intervention in cancer treatment compared to the blood vascular system. In this study, we explored the feasibility of photothermal therapy ...
Hazra Purnima - - 2014
This paper reports the temperature dependent electrical parameters of p-Silicon nanowires (SiNWs)/n-ZnO thin film based core-shell heterojunction diodes fabricated by conformally deposited zinc oxide (ZnO) by atomic layer deposition (ALD) technique on metal-assisted chemically etched SiNWs. The temperature-dependent current-voltage characteristics of the device have been estimated using the modified thermionic ...
Kim Deok-Kee - - 2014
IrO2 nanodot (ND) growth by plasma enhanced atomic layer deposition as a charge storage layer has been investigated. As-deposited IrO2 NDs showed a high density of 2.38 x 10(12)/cm2 and a small mean diameter of 3.22 nm, and turned into a spherical shape with a large dot-to-dot separation after annealing. ...
Mondal A - - 2014
The Si nanowire (NW) network was fabricated on the Si substrate with the help of glancing angle synthesized Ag NPs assisted etching technique. The horizontal Si NWs network was characterized by field emission gun-scanning electron microscopy which shows the formation of long Si NWs of diameter within the range of ...
Yoo Hyun Ju - - 2014
In this study, a simple flow cytometry protocol to evaluate nanoparticle associated biological response was proposed. Particularly, we have evaluated the effect of surface charge on the cellular nanoparticle associations and nanoparticle-induced apoptosis. Significant enhancement in side scattering intensity was observed for the HeLa cells treated with positively charged (PLL)ZnO ...
Palomino-Merino R - - 2014
PbS:Cu nanocrystalline films were prepared by chemical bath at temperature of 80 degrees C and deposited on glass substrates. Different Cu-doping levels were obtained changing the volume of the Cu-reagent-solution into the PbS growing solution. X-ray diffraction (XRD) and optical absorption (OA) measurements were carried out to characterize the semiconductor. ...
Jiang Haiyun - - 2014
A superhydrophobic polypropylene (PP) coating on the surface of aluminum alloy coupons is unstable because of the existence of metastable state in curing process. Nano-titania particles were added into PP solution to form hierarchical micro- and nano-structures of PP coatings on the surface of aluminum alloy coupons. The morphology of ...
Yang Peilun - - 2014
Currently, growing attention has been paid to the sensitive determination and removal of Cu2+ because excessive levels of Cu2+ could do harm to organisms. Herein, a novel diethanolamine-modified magnetic fluorescent Fe3O4@ZnS nanoparticle (MFNP) for simultaneous detection and removal of Cu2+ was designed and synthesized through dithiocarbamate linkage strategy. The characterization ...
Macutkevic Jan - - 2014
The dielectric properties of Polymethylmetacrylate (PMMA) composites filled with CVD made multiwalled carbon nanotubes (MWCNT) of different mean outer diameters (d - 9 nm and 12-14 nm) were investigated at temperatures from 300 K to 390 K and in a wide frequency range (20 Hz-1 MHz). The percolation threshold is ...
Kalita Hemjyoti - - 2014
Here, bio-based shape memory polymers have generated immense interest in recent times. Here, Bio-based hyperbranched polyurethane/triethanolamine functionalized multi-walled carbon nanotube (TEA-f-MWCNT) nanocomposites were prepared by in-situ pre-polymerization technique. The Fourier transform infrared spectroscopy and the transmission electron microscopic studies showed the strong interfacial adhesion and the homogeneous distribution of TEA-f-MWCNT ...
Hadia N M A - - 2014
Cadmium sulfide (CdS) nanowires with uniform diameter were prepared by the solvothermal method using ethylenediamine (en) as solvent. The products were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scan electron microscopy (SEM), energy dispersive spectroscopy (EDS) and transmission electron microscopy (TEM). It was found that the products ...
Chi Xiaolei - - 2014
A silicon dioxide (SiO2) cavities array was fabricated on indium-tin oxide (ITO) electrode with polystyrene (PS) particles array as template by using sol-gel technique. The electrochemical properties of SiO2 cavities array indicated that it acted as microelectrode array. Horseradish peroxidase (HRP) was immobilized on the surface of SiO2 cavities by ...
Calderon-Moreno J M - - 2014
The photoluminescence properties and formation mechanism of a novel stoichiometric phosphor are presented. Nanoplates of pure single-phase crystalline Eu2O2CO3 oxycarbonate (hexagonal type-II) were synthesized by dry autoclaving under autogenic pressure (under 3 MPa) using an efficient, high yield solid state green-chemistry route that can be extended to other rare-earth oxycarbonate ...
Kumar R Rakesh - - 2014
Self catalytic growth of Indium Oxide (In2O3) nanowires (NWs) have been grown by resistive thermal evaporation of Indium (In) in the presence of oxygen without use of any additional metal catalyst. Nanowires growth took place at low substrate temperature of 370-420 degrees C at an applied current of 180-200 A ...
Kim Beomjin - - 2014
New red dopant, DPPZ based on porphyrin moiety was synthesized. DPPZ showed UV-Vis and PL maximum values of 412 and 638 nm, indicating the large stokes shift. New blue host compound, TATa was also synthesized and used for co-mixed white emission. TATa exhibited UV-Vis. and PL maximum values of 403 ...
Song Myungkwan - - 2014
A novel main ligand 2-(2,4-dimethoxyphenyl)-5-trifluoromethylpyridine (MeO2CF3ppy) and its complex bis[2-(2,4-dimethoxy-phenyl)-5-trifluoromethyl pyridinato-N,C2]iridium acetylacetonate (MeO2CF3ppy)2Ir(acac) was synthesized. 2,4-Dimethoxy and 5-trifluoromethyl group were incorporated into main ligand to tune luminescence color. The phosphorescence organic light-emitting diodes (PhOLEDs) based on this complex with the configuration of ITO/PEDOT:PSS (40 nm)/PVK:CBP:Ir(III) complex (50 nm)/BCP (20 nm)/LiF ...
Hu Alice - - 2014
We report a facile two-step methodology; electrospinning followed by high temperature treatment, to produce manganese oxide-based nanofibers with well-controlled nanoscale architectures. Electrospinning of manganese acetate-based solution (MnOx precursor) has been utilized to fabricate meso-porous manganese oxide nanofibers. These fibers have diameters of about 200-300 nm and fiber mats have been ...
Kim Chang Soo - - 2014
Palladium particles were simply synthesized using 1-hexyl-3-methylimidazolium hexafluorophosphate ([Hmim][PF6]). The morphology of the particles was significantly affected by the ionic liquid. Palladium was impregnated on a carbon powder for hexafluoropropylene hydrogenation catalysts. Catalytic activity was varied by the calcination temperature. Under the identical conditions, the catalyst prepared using the ionic ...
Siqueira Maria C - - 2014
In this study, silver nanoparticles were prepared and incorporated into carboxymethylcellulose films to evaluate the antimicrobial activity for food packaging applications. The techniques carried out for material characterization were: infrared spectroscopy and thermal analysis for the silver nanoparticles and films, as well as particle size distribution for the nanoparticles and ...
Liu Haitao - - 2014
Ordered mesoporous silica was successfully synthesized by using different chain-length chiral anionic surfactants, N-acylalanine and N-acylvaline as templates, and N-trimethoxy silylpropyl-N, N, N-trimethyl ammonium (TMAPS) as a co-structure-directing agent (CSDA) under weakly acidic conditions. The synthesized products were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and nitrogen ...
Zhang Feifei - - 2014
A sol-gel technique has been developed to deposit various nanoparticles (NPs) on silica spheres. The silanization of the silica spheres using 3-mercaptopropyltrimethoxysilane (MPS) with mercapto groups (-SH) plays an important role for the deposition. After being functionalized by MPS, the deposition of magnetic and noble metallic NPs was performed by ...
Li Menghua - - 2014
Hexagonal BN crystals have been synthesized from a facile one-step solid state reaction route by sodium tetraphenylborate, hydrazine, zinc powder and sulphur powder as the reactants. The SEM and TEM results showed the BN crystals had the morphology of one-dimensional rod-like shape and with diameters in the range of 100-200 ...
Du Xiongwei - - 2014
We have investigated the impact of aqueous suspension of single-walled carbon nanotubes (SWCNTs) and multi-walled carbon nanotubes (MWCNTs) on performance of repeated PCR, and discussed their thermal impact on DNA characteristics. Both SWCNTs and MWCNTs are found significantly enhancing the specificity of the repeated PCR and capable of inhibition of ...
Ng B C - - 2014
Plasticized polymer electrolytes in this study are consist of biodegradable polycaprolactone (PCL) as a host, ethylene carbonate (EC) as a plasticizer, lithium triflate (LiSO3CF3) as salt and nanocomposite silicon dioxide (SiO2) as filler. Solution cast technique is used in the preparation of the plasticized polymer electrolytes. The electrical properties of ...
Hadia N M A - - 2014
TiO2 nanowires (TiO2 NWs) were successfully synthesized in large amounts through the one step hydrothermal process in 10 M NaOH aqueous solution at 150 degrees C for 15 h followed by annealing at 300-800 degrees C for 2 h. The products were characterized by X-ray diffraction (XRD), Fourier transform infrared ...
Ho Ching-Yen - - 2014
This paper utilizes non-Fourier two-temperature heat conduction model to investigate the temperature field in nanometer-sized thin films irradiated by an ultrashort-pulse laser. Ultrashort-pulse laser processing for nanometer-sized devices is usually applied in MEMS and nanotechnology. For ultrashort-pulse laser interaction with metals, the two-temperature model was proposed to describe the heat ...
Dou Zhi-Feng - - 2014
Uniform hexagram-shaped alpha-Fe2O3 microcrystals with tunable morphologies were fabricated by a facile hydrothermal method followed by annealing in air. The highly anisotropic hexagram-shaped alpha-Fe2O3 particles with the higher coercivity forces and remannent magnetizations showed weak ferromagnetic behaviors at room temperature and displayed the typical shape-dependent magnetic behaviors.
Ravindra A V - - 2014
Face-centered-cubic (fcc) and hexagonal-close-packed (hcp) phases of cobalt monoxide (CoO) nanostructures are prepared using thermolysis route at the same reaction temperature 296 degrees C with synthetic approach conditions. These nanostructures show mixture of nearly spherical and nanoflake morphologies. The structural phases of these nanostructures transform to spinel-Co3O4 by application of ...
Tsytsarev Vassiliy - - 2014
Voltage-sensitive dye imaging (VSDi) enables visualization of information processing in different areas of the brain with reasonable spatial and temporal resolution. VSDi employs different chemical compounds to transduce neural activity directly into the changes in intrinsic optical signal. Physically, voltage-sensitive dyes (VSDs) are chemical probes that reside in the neural ...
Singh Rajni - - 2014
The development of antibiotics has played a significant role in combating the dreaded infectious disease such as tuberculosis, pneumonia, typhoid fever and meningitis in 20th century. However, the improper use of antibiotics led to the development of multidrug resistance (MDR) in microbial flora raising a global public health concern of ...
Yang Celina - - 2014
The applications of nanoparticles (NPs) for improved therapeutics are at the forefront of cancer nanotechnology. Gold nanoparticles (GNPs) have been extensively used due to their ability to act as both an anticancer drug carrier in chemotherapy and as a dose enhancer in radiotherapy. GNPs used in the studies were predominantly ...
Yao Yuanyuan - - 2014
The current study involves in identification and molecular levels characterization of optimal size and concentration of gold nanoparticles (AuNPs). Stable, gold nanoparticles were synthesized and characterized using transmission electron microscopy (TEM) and dynamic light scattering (DLS). The concentration and size dependent effects of the gold nanoparticles on proliferation of pre-osteoblast ...
SanMartin Agneta - - 2014
Although nanowires are widely used in biological applications, especially as cell-manipulation tools, the effect of nanowires on living cells has not been fully investigated. Here, we examined the full gene expression of mouse cortical stem cells cultured on vertical nanowire substrates using RNA microarrays. Genes involved in cell adhesion, cell ...
Orozco Victor H - - 2014
Carbon nanotubes (CNTs) and sepiolite (SEP) were modified in order to improve their compatibility with the polypropylene (PP) matrix. Carboxylic groups were introduced into the CNTs through an oxidative treatment and aliphatic chains were incorporated on SEP by ion exchange of a cationic surfactant. Maleic anhydride grafted polypropylene (PPgMA) was ...
Sarno Maria - - 2014
Few layer graphene oxide (GO) nanosheets were prepared by a very fast modified Hummers method and widely characterized. Avoiding further chemical reactions, trying to take advantage of the easy exfoliation of GO favoring the formation of a tribofilm, and using a methodology well known to the lubricant industry, they were ...
Zhou Zhongnian - - 2014
Graphene (GR)-based nanocomposites with different mass ratios of NiO and GR are prepared via hydrothermal method using Ni(NO3)2 as the origin of nickel and urea as the hydrolysis-controlling agent. The morphology and electrochemical performance of the GR/NiO nanocomposites are closely associated with the mass ratios of GR to NiO. The ...
Kahng Yung Ho - - 2014
We present our investigation results on the origin of the morphological defects on graphene films synthesized by chemical vapor deposition method on nickel catalytic substrates. These defects are small-base-area (SBA) peaks with tens of nanometer heights, and they diminish the applicability of graphene films. From atomic force microscopy observations on ...
Mohan P - - 2014
Improved electrochemical performances of Spinel LiMn2O4 cathode was prepared by a sol-gel coating of CePO4 to the surface of the LiMn2O4 powder and subsequent heat treatment at 600 degrees C for 8 h in air. The surface modified LiMn2O4 cathode materials were characterized by using TG/DTA, X-ray diffraction, Scanning electron ...
Singh Ashutosh K - - 2014
Arrays of permalloy nanowires (NWs) were fabricated into the pores of self-engineered Anodic Aluminium Oxide (AAO) templates by a simple electrodeposition technique (EDT) with a diameter -200 nm. By varying the length of the nanowires from 1.5 to 7.5 microm, got corresponding changes in aspect ratio from 7.5 to 37.5. ...
Kang Hungu - - 2014
Molecular-scale surface structures of self-assembled monolayers (SAMs) prepared by the adsorption of pentafluorobenzenethiols (PFBT) and pentachlorobenzenethiols (PCBT) on Au(111) were investigated by scanning tunneling microscopy (STM). High-resolution STM imaging revealed that PFBT SAMs on Au(111) have long-range ordered domains with a row structure at room temperature, whereas PCBT SAMs have ...
Lee H W - - 2014
Compared with other materials, zinc oxide (ZnO) exhibits stability in air, high-electron mobility, transparency and low light sensitivity. We investigated these properties in ZnO thin-film transistors (TFTs) containing a cross-linked poly(vinyl alcohol) (C-PVA) (1:3) buffer layer stacked between the semiconductor and gate dielectric. We measured the impact of this C-PVA ...
Xu Ke - - 2014
Metalorganic chemical vapor deposition (MOCVD) of nanostructured Er2O3 thin films was performed using the Er-tris-guanidinate precursor [Er(DPDMG)3] (DPDMG = diisopropyl-2-dimethylamidoguanidinato) as the Er source and oxygen. Film deposition was carried out on Si(100) and quartz glass substrates and the process parameters namely temperature, pressure and oxygen flow rate were varied. ...
Cho Hyun Woo - - 2014
The effect of non-conductive nano-particles on the electrical percolating network formation and the electrical conductivity of conductive nano-particles in polymer matrices is investigated using Monte Carlo simulations and a percolation theory. Both conductive and non-conductive nano-particles are modeled as spheres but with different diameters. Non-conductive nano-particles are up to four ...
Deng Mengmeng - - 2014
Inkjet printing is a non-contact and low-cost method for high resolution deposition of nanomaterials and mass production of electro-devices. In this study, an environmentally friendly gold nanoparticles (AuNPs) ink was prepared and electrochemical electrodes were fabricated through inkjet printing technology. Electrochemical behaviors of the printed electrodes with different printing layers ...
Zheng Hao - - 2014
Spinel phase LiMn1.95M(x)O(4-y)F(y) (M = Co and Y) were prepared by a rheological phase reaction method. The samples were characterized by X-ray diffraction, scanning electron microscopy, AC impedance, and galvanostatic charge/discharge profile measurement. These results showed that the LiMn1.95M(x)O(4-y)F(y) had better cycling performance than pure LiMn2O4. Among all the doped ...
Untem Flávia O - - 2014
In the last decades a new class of thermoset phenolic resin is emerging as a substitute of the traditional epoxy and phenolic resins in the aircraft industry. This new class is called polybenzoxazines and its associates the epoxy resin's mechanical properties and phenolic resin's thermal and flame retardant properties, resulting ...
Li Na - - 2014
Supercapacitors are successfully prepared from ordered mesoporous carbon (OMC) synthesized by employing the mesoporous silica, SBA-15 as template and furfuryl alcohol as carbon source. It is found that the carbonized temperature greatly influences the physical properties of the synthesized mesoporous carbon materials. The optimal carbonized temperature is measured to be ...
Lee Geon Joon - - 2014
We studied the effect of plasma treatment on the structural and optical properties of ZnO nanostructures prepared by chemical bath deposition in an aqueous solution of Zn(NO3)2 and hexamethylenetetramine. The room-temperature photoluminescence (PL) spectrum of the as-grown ZnO nanostructures exhibited two emission bands due to exciton emission and defect emission. ...
Kim Ji-Hoon - - 2014
Low band gap organic semiconducting polymers were prepared as p-type donors for organic photovoltaic devices. A novel dibrominated monomer composed of phenothiazine, thiophene, and benzothiadiazole (DPDTBT) was synthesized as a low band gap core block. DPDTBT was copolymerized with three different boronic esters of dithiophene, fluorene, and phenothiazine by the ...
Park Sangeun - - 2014
When vertically aligned carbon nanotubes (VACNTs) are synthesized by thermal chemical vapor deposition (TCVD), their structural features such as height and density can be determined by TCVD growth conditions. In this study we investigated the effect of growth pressure on the structural features of VACNTs. Changes in growth pressure significantly ...
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