In this study, we present a new operating method that we developed to be used in noncontact atomic force microscopes. This method is developed to minimize the time spent for noncontact AFM imaging experiments. In [...]
The capability for accurate dimensional measurement at the nanoscale, traceable to the SI meter, is fundamental for the development and effective support of nanoscience and nanotechnology. At the National Measurement Institute Australia (NMIA), the primary [...]
The present work shows, for the first time, that the electric potential pattern of acid and basic solid surfaces is modified under variable relative humidity, as determined by using Kelvin force microscopy (KFM). This allows [...]
The high demand for better performing battery electrodes and fuel cell catalysts has pushed the direction of experimental design for in situ electrochemical (EC) cells towards non invasive experimental techniques such as x-ray absorption spectroscopy [...]
Noble metal nanoparticles have been extensively exploited in recent decades for their importance in fundamental science and their applications in biomedical therapeutics, catalysis and as a bottom-up approach to the production of ordered nanostructures. Key [...]
Nanoparticle development and manufacturing require appropriate particle characterization techniques to determine if design or quality goals are being met. One important aspect of many nanoparticle systems is the zeta potential, a measure of surface charge. [...]
, Lekkala J.
, Li T.
, Roinila T.
, Verho J.
, Vilkko M.
, Wang Y.
, Yu X.
, Zeng H.
, Tampere University of Technology, FI
Silicon nanowires have attracted significant attention by the electronics industry due to the need for ever-smaller electronics components and devices. It has been shown that nanostructures reveal mechanical and electrical properties that are significantly different [...]
We characterized novel metal carbon materials called covetics. More specifically we study warm rolled Al 7075-carbon materials containing up to 5 wt% C. At macroscale we measured mechanical properties: Young’s modulus, ultimate tensile strength (UTS), [...]
In this paper, it was demonstrated that the self-assembled organic rosette nanotube (RNT) can encapsulate single-walled carbon nanotubes (SWNTs) and form nanocomposites. Importantly, the RNTs were found to hold their supramolecular architectures. To understand how [...]
Fe-Cu alloys are commonly used for a simulation of radiation damage of reactor pressure vessel (RPV) because a neutron irradiation enhances the copper rich precipitates (CRPs) with the sizes of several nanometer which is known [...]
Tobacco mosaic virus (TMV) and TMV-derived materials have demonstrated their great potential in biomedical applications, where the mechanical property is one of the determining factors for their proper functionalities and structural integrity. Recently, it has [...]
Carbon/carbon (C/C) composites reinforced with carbon nanotube are tested for their application to primary aircraft structures using ultrasonic testing. Ultrasonic testing is the most widely used and most powerful procedure for inspecting composites. Composites are [...]
Manufactured nanoparticles (MNPs) are increasingly released to the environment. In spite of this growth, information about the fate and toxicity of nanoparticles in the environment is limited, partly due to the lack of techniques capable [...]
Here, we provide simple methods to modify the particle size, shell thickness, and the morphology of hollow silica particles (HSPs). To synthesize the HSPs, we adopted polystyrene (PS) particles as a sacrificial template. Size tune [...]
We present the design, characterization and experimental demonstration of a polarization insensitive and wide-angle plasmonically induced transparency (PIT) planar metamaterial (MM) in the near infrared regime. A four-level plasmonic model is proposed to explain and [...]
In this work we have investigated Yb/Er and Yb/Tm co-doped NaYF4 nanoparticles (NPs) as well as Yb and Er single doped ones by means of luminescence, high resolution transmission electron microscopy (HRTEM), X-ray powder diffraction [...]
In this work polymer nanocomposite systems based on epoxy resin (ER), reinforced with amine-modified multi-walled carbon nanotubes (MWCNTs) and/or nanoclays were studied. Thermogravimetric/Differential Thermal Analysis (TGA/DTA) and Dynamic Mechanical Analysis (DMA) techniques were carried out. [...]
Materials consisting of metallic AuPdO nanoparticles (AuPdO-NPs) supported on mesoporous silica SBA-15 channels (AuPdO-NPs/SBA15, Figure 1) have become composite compounds of great interest due to their catalytic applications . In this work we report on [...]
In this work we report on the enhancement of the ferromagnetism of amine/organic acid capped Au nanoparticles (AuNPs) by incorporation of yttrium-oxide (Y2O3). The magnetization measurements displayed a ferromagnetic (FM) loop with a coercive field [...]
There are many researches for the solid-solution to prepare the materials with the properties which pure materials do not have. However, basically, it was difficult to synthesize the solid-solution phase because of high activation energy [...]
, Hao Y.
, Ji R.
, Miao T.
, Sun Q.
, Sun X.
, Wang Y.
, Zhan S.
, Zhang Q.
, Northwest University, CN
As solar energy is a renewable,clean energy sources,it has been focused rearchers attention for a long time.In this study ,We expect to enhance the transimittance of anti-reflection(AR) films which are used in solar cells.First,The Ag [...]
Y0.97Ce0.01Yb0.02BO3 nanosheets(a) and micro-rose(b) have the same hexagonal structure, and the intensity of (110) and (100) diffraction peaks of the sample a is stronger than b. Annealing the sample b in different temperature, the higher [...]
In this work, we synthesized a series of nonionic polymerizable nonyl phenol ethoxylates (NPEs) as organic solvent-soluble surfactants in which straight, branched and cyclic alkyls and phenyl acted as solvophilic segment and polyoxyethylene, or maleate [...]
Chromium iron phosphate glass was investigated for use as waste form because of its improved chemical durability. The introduction of chromium in sodium-iron-phosphate glasses is used to compare its effect with iron in inhibition of [...]
In summary, we have reported the synthesis of 1%, 2% and 4% Fe,Co doped TiO2 powders successfully prepared via sol–gel synthesis and controlled calcinations. XRD for Fe, CO doped TiO2 indicates dopant concentration effects phase [...]
Highly dispersed Au and Au-Ag nanoparticles supported on carbon nanotubes are generated using an easy synthesis. MWCNT was opened and its derivative containing -COOH and -OH functional groups was obtained. Polycondensation of monohydrate citric acid [...]
NiFe2O4 is an important magnetic material because of its applications in various fields Ferrites are also used in gas, humidity sensor and anode materials in lithium ion batteries. The problem existing in anode material is [...]
We report a combined high-resolution photoemission and photoelectron diraction investigation of a magnesium oxide adsorbate on an Fe surface grown on a GaAs(4x2)-reconstructed substrate. MgO is an appliciable insulator in magnetic tunnel junctions (MTJ) based [...]
, Ciurea M.L.
, Dinescu M.
, Ghica C.
, Lepadatu A.M.
, Maraloiu A.V.
, Scarisoreanu N.D.
, Stavarache I.
, Teodorescu V.S.
, National Institute for Materials Physics, RO
We report the presence of a fast Ge diffusion effect produced during laser crystallization of Si0.45Ge0.55 films deposited by magnetron sputtering on Si(100) substrates. The laser irradiation was performed using the 265 nm wavelength radiation [...]
Bulk heterojunction organic solar cells (BHJs) with ZnO nanoparticles buffer layer between the active layer and the aluminum (Al) top electrode were fabricated. The BHJs comprised of successive layers of poly(3,4ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), a blend of [...]
The anodic oxidation of titanium allows the obtaining of an oxide layer with thickness, color, homogeneity and insulating properties that depend on the process parameters. TiO2 thin films have been studied mostly to derive information [...]
We report the synthesis of Co nanoparticles in spherical micelles and formations the 2D arrays structures of Co nanoparticles. The Co nanoparticles were chemically synthesized through a redox method in spherical micelles of the microemulsion [...]
A wide variety of characterization techniques were used to determine the properties of titanium, titanium oxides and vanadium oxide thin film multilayers with different thicknesses, for the as-deposited state as well as under different levels [...]
The performance of hybrid NEM-CMOS low power electronics and logic gates highly depends on the source-drain contact resistance and adhesion force, which affect the power consumption and the pull-in/pull-out hysteresis, respectively. In the present work, [...]
Quantum dot gate (QDG) field effect transistors (FET) have shown three-state transfer characteristics. Quantum dot channel (QDC) field-effect transistors (FET) have exhibited multi-state ID-VG characteristics. This paper aims at studying the effect of incorporating cladded [...]
Magnetic resonance force microscopy (MRFM) is considered another as a novel scanning probe microscope (SPM) combined with conventional SPM and magnetic resonance imaging. Originally, MRFM is proposed as a means to improve detection sensitivity to [...]
Carbon nanotubes (CNTs) reinforced composites have applications in electronics, optoelectronics, photovoltaic, sensors, structural materials, and energy storage systems. Electrical characteristics, such as alternating current (AC) complex conductivity and dielectric permittivity are key functional parameters of [...]
A systematic study of the V-pits in 4 periods of InGaN/GaN multiple quantum well structure (MQW) and defects in n type GaN is investigated by room temperature cathodoluminescence. These MQWs were fabricated on a sapphire [...]
, Chen C-Y
, Chen L.-W.
, Chen Y-Y
, Chu S.-Y.
, Hsu S.-C.
, Huang W.-T.
, Li Y.
, Yang C.-M.
, National Chiao Tung University, TW
In this study, we for the first time explore the dependence of the silicon fin width on electrostatic characteristic of HKMG bulk FinFET devices. On the same layout area, our study indicates that the narrow [...]
In recent years, inductively coupled plasma mass spectrometry (ICP-MS) operated in time-resolved analysis (TRA) mode has merged as a promising analytical tool capable of both sizing and counting metal containing nanoparticles in aqueous suspensions. In [...]
Asymmetric flow field flow fractionation is a powerful and promising technique for the separation of nanoparticles. In combination with UV/Vis detection, multi-angle light scattering and coupled to ICP-MS it is a fast and quantitative analytical [...]
Nanomaterials are being widely incorporated into consumer products and are being used in studies and procedures to improve human health. Although there are benefits of using nanomaterials, there may also be unintended risks. There is [...]
Accurate and reliable characterization of nanoparticles is crucial for both industrial applica-tions and studies of their toxicological and environmental impacts. Particle size distribution (PSD) has been widely recognised as one of the key parameters that [...]
This paper will describe the ways in which one can use impedance and dielectric spectroscopy for characterizing nanoparticulate thin films and composites. This technique is especially useful for these types of materials because it is [...]
The objective of this research was to develop a method reliable for the detection and quantification of engineered nanoparticles in municipal wastewater treatment systems. Wastewater and sludge samples were sampled from four regional municipal wastewater [...]
The research focus is on encapsulating materials like drugs and nutrients specifically for colon using resistant starch. As a representation a model system is developed by encapsulating glass bead and experimenting the suitability to be [...]
A long afterglow phosphor CaZnGe2O6:Tb3+ has been prepared by using organic coated luminescence ZnO nanopowder through a high temperature solid-state reaction route. This new CaZnGe2O6:Tb3+ long afterglow phosphor sample emits the Tb3+ green fluorescence 543 [...]
This paper presents results for the thermal diffusivity of a synthetically produced spider silk. This synthetic spider silk is being developed for lightweight thermal management applications. Additionally, an improved method for measurement of the thermal [...]
This paper presents a parametric study of the effects of radiation heat loss and non-constant heating on the measurement accuracy of thermal properties of micro/nanoscale fibers using the Transient Electrothermal technique. In the original derivation, [...]
The surface topography and chemistry of cellulose-based paper, was controlled by a two-step plasma (glow discharge) treatment. Selective plasma etching of the amorphous regions of cellulose followed by plasma deposition of a thin (100 nm) [...]
The characterization of an optical absorption based one-shot sensor is described for the determination of thiourea based on the immobilization of new nanocomposite of MWCNT-graft-poly(citric acid)/Au on a triacetylcellulose membrane. So Multiwalled carbon nanotubes were [...]
We report on TiO2 and WO3/TiO2 bilayers thin films grown on amorphous and crystalline substrates, at room temperature by plasma-assisted sputtering. TiO2/WO3 ceramic targets were used in an RF magnetron discharge running in an Ar [...]
In the present study mechanical alloying has been used to obtain bulk nanocrystalline FeAl intermetallic compound. Nanocrystalline powder of Fe(Al) solid solution was the product of ball milling. The structural effects of mechanical alloying of [...]
In recent years, there is an overwhelming interest in using nanoparticle for cancer therapy. Many reports show selective cytotoxicity of nanoparticles over cancer cells. However, the mechanism of such behavior is yet to be discovered. [...]
Journal: TechConnect Briefs
Volume: 1, Nanotechnology 2013: Advanced Materials, CNTs, Particles, Films and Composites (Volume 1)
Published: May 12, 2013
Industry sector: Advanced Materials & Manufacturing
Topics: Materials Characterization & Imaging