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The pyrolyzed polyaniline (PANI) consisted of amorphous hard carbon full of pores. Carbon nanotubes (CNTs) grew on pyrolyzed PANI substrate with the rough surface containing some pores using a low pressure chemistry vapor deposition (LPCVD) method with xylene as a carbon precursor source and Fe/SiO2 nanoparticles as catalyst. The pore extrusion and the deposited carbon particles adhesion of CNTs growing...
Magnetic nanoparticles would be one of the efficient tools for the improvement of antibody-antigen reaction and the enhancement of detection signal for immunofluorescence assay (IFA). This paper focuses on the investigation of the immuno functionality of antibodies immobilized on the surface of iron oxide nanoparticles. Fe3O 4 superparamagnetic nanoparticles were successfully produced and conjugated...
ATP synthase is the minimal molecular motor and a highly efficient rotary machine. Giant magnetoresistance (GMR) effect is the change in electrical resistance that occurs when materials are exposed to a magnetic field. In this paper, a new dynamic biomolecule identification technique is proposed using GMR sensor combined with ATP molecular motors. Molecular motors, attached with magnetic nano-particles,...
Temperature and size effects on behavior of nano-scale water clusters are investigated by means of molecular dynamics simulations. Hydrogen bond properties and the dipole moment of the water clusters are examined in order to explore the effects of temperature and cluster size on the behaviors of the clusters. The flexible three-centered (F3C) water potential is used to model the inter- and intra-actions...
Silicon nanostructures were fabricated by a natural lithography technique, with sizes far beyond the limit of conventional, by a self-organizing gold colloidal particle monolayer as an etch mask. The silicon nanostructures with high density and uniformity in height and shape were obtained using reactive ion etching (RIE). The uniform spatial distribution of the Si nanostructures can also be obtained...
In this work, the transportation of nano-particles inside micro-channels with nano-sized gaps and various geometries is investigated. Numerical simulations based on fluid governing equations in Eulerian coordinate and particle motion equations in Lagrangian coordinate are employed and the effects caused by parameters including curvature and branching angle of micro-channel, nano-gap size, and the...
(FePt)1-xCux alloy nanoparticles were prepared by chemical-reduction of platinum acetylacetonate, iron acetylacetonate and copper acetylacetonate with 1,2-hexadecanediol as the reducing regent. As prepared, the particles have a disordered fcc structure with an average diameter of ca. 3nm. The addition of 4 % copper promotes the effect that the disordered fcc structure transforms to ordered fct phase,...
Poly (styrene-b-butadiene-b-styrene) (SBS) triblock copolymer templates which present in-plane cylinder pattern have been prepared by solvent-induced order-disorder phase transition method. Then silver clusters have been deposited onto the SBS copolymer templates by low energy clusters beam deposition (LECBD) apparatus. The characterization of samples by AFM with tapping-mode has shown that silver...
The SrAl2O4: Eu2+, Dy3+ phosphor nanoscale powders with high brightness were prepared by a nano-coating process. The resulted SrCO3@ Al2O3 core-shell precursors were characterized by transmission electron microscope (TEM), which indicates that the precursor particles have narrow size distribution. The structure and optical properties of the phosphor powders were investigated systematically by means...
Nanoparticles are difficult to remove because it is much more difficult to deliver the necessary force to smaller dimensions. We investigate in this paper a new method using micro-droplet spray to remove nanoparticles from solid flat surface. With a droplet diameter between 50 and 100 mum, we evaluate the lift force and drag force acting on spherical particles. The particle diameter is less than 100...
Magnetite (Fe3O4) nanoparticles uniformly loaded on multi-walled carbon nanotubes (MWCNTs) were synthesized by a wet chemistry method, and then carbon coated Fe3C nanoparticles supported by MWCNTs were prepared by heat-treatments subsequently in nitrogen at 600 degC and in acetylene atmosphere at 500 degC. The as-prepared nanoparticles were all single crystals with a size distribution ranging from...
As2S3 is playing an important role in the treatment and research for human cancer, but many limitations exist because of its form. We studied preparation method of As2S3 nanoparticles, a completely new form of medicine containing arsenic and explored their antitumor effect. As2S3 nanoparticles were prepared chemically and characterized by Transmission electron microscope and energy dispersive spectrometry...
High yields of multi-walled carbon nanotubes are synthesized by chemical vapor deposition of acetylene on palladium nanoparticles supported on porous SiO2. HRTEM results reveal that the carbon nanotubes have novel conical inner structure. By changing the content of palladium in the catalyst, we obtained palladium nanoparticles with different diameter distribution. It was found that the apex angles...
This paper presents a CMOS biochip for DNA detection with an embedded current amplifier circuit by using self-assembly multilayer gold nanoparticles (AuNPs). The biochip is fabricated by a TSMC 0.35 mum 2P4M standard CMOS process and post-CMOS micromachining processes. On each measuring spot, there is a pair of electrodes with a gap distance of 350 nm. Through a self-assembly process between suspended...
Conventional nanoparticles were directly synthesized in single film by PVD or CVD process. In this paper, we proposed a novel approach to the growth of SiC nano-particles (np-SiC) by thermal annealing of C/Si multilayers deposited on single crystalline Si (100) substrates using ion beam sputtering system (IBS). The deposition of C/Si multilayers was performed at room temperature under ultra high vacuum...
The cryogenic dielectric and mechanical properties of nanowire-Al 2O3 filled PBT/GF (glass fiber) composites are investigated by combing macro-performances testing and microstructures analysis. Compared with PBT/GF composites, the PBT/GF/Al2O 3 ternary systems present improved tensile strength as well as impact strength. The fracture surface shows a typical toughened characteristic under SEM observation,...
Nd3+ doped PbZr0.52Ti0.48O3 (PNZT) nanopowders were prepared by sol-gel methods in ethylene glycol system. Neodymium nitrate was used as Nd3+ source. The reaction mechanisms of nanopowder preparing process from the sol were discussed through using FTIR, XRD, TG-DTA, and it was proved that the heating temperature of PNZT was 50degC-100degC higher than PZT. PNZT lattice structure was characterized...
(Ni+RuO2)/Ni active cathodes were prepared by electrochemical co-deposition of suspended RuO2 particles along with Ni2+ ions onto Ni substrates from an electrolyte solution (Watt bath). Morphology and composition of the cathodes were investigated by SEM and EDX analysis. The observations revealed the RuO 2-Ni layers covered by cauliflower-like particles which distributed homogeneously on the Ni substrate...
It is well known that the morphology is one of the most important factors to affect the dielectric properties of polymeric nanocomposites. In this work, it is thought that the interfacial interaction between nanoparticles and polymer matrix is one of the most important factors affecting the crystalline morphology of the nanocomposites. So the effects of the surface-treatment of CaCO3 nanoparticle...
To evaluate the biocompatibility of self-prepared Fe3O 4 magnetic nanoparticles, which has the potential application in tumor hyperthermia, MTT assay was used to evaluate the in vitro cytotoxicity; hemolysis test was carried out to estimate its blood toxicity; Fe3O4 suspended in sterile 0.9%NaCl were intraperitoneally injected into KM mouse to calculate the LD50; micronucleus (MN) were reckoned to...
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