Materials Literature
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Dextran and PEG-coated iron oxide nanoparticles (NP), when suitably modified to enable conjugation with molecular targeting agents, provide opportunities to target cancer cells. Monoclonal antibodies, scFv, and peptides conjugated to 20 nm NP have been reported to target cancer for imaging and alternating magnetic fie…
A simple, cost-effective, and safe growth technique, that is, mist chemical vapor deposition method, has been applied to the growth of single crystalline ZnO thin films on a -plane sapphire substrates. A water solution of zinc acetic acid and compressed air were used as sources, and the growth was performed at 800 °C.…
This review presents the elastic theory of low-dimensional (one- and two-dimensional) continua and its applications in bio- and nano-structures. First, the curve and surface theory, as the geometric representation of the low-dimensional continua, is briefly described through Cartan moving frame method. The elastic the…
ADVERTISEMENT RETURN TO ISSUEPREVReviewNEXTAdvances in Structurally Characterized Lanthanide Alkoxide, Aryloxide, and Silyloxide CompoundsTimothy J. Boyle* and Leigh Anna M. OttleyView Author Information Sandia National Laboratories, Advanced Materials Laboratory, 1001 University Boulevard, S.E., Albuquerque, New Mexi…
Non-spherical gold nanoparticles such as rods (short, long) (1,2), wires, cubes (3), nanocages (4), (multi-)concentric shells (5), triangular prisms (6–7), as well as other more exotic structures such as hollow tubes, capsules (6), even branched nanocrystals (8–9) have garnered significant research attention in the pa…
Banana fibers obtained from the stem of banana plant (Musa sapientum) have been characterised for their diameter variability and their mechanical properties, with a stress on fracture morphology. The nature of representative stress strain curves and fracture at different strain rates have been analysed through SEM.
For years, nanotechnologies have developed the use of common materials, such as iron or silica, at an extremely small scale because of their new properties (reactivity, conductivity, optical sensitivity). More precisely, gold nanoparticles are used in numerous technologies such as electronics, new paints or research o…
Brick layer models (BLMs), although applicable at the microscale, are inappropriate for characterizing electroceramics at the nanoscale. A new construct, the nano‐grain composite model (n‐GCM), has been developed to model/analyze the AC‐impedance response of equiaxed polycrystalline electroceramics. The procedure empl…
Supported gold catalysts were investigated in the selective gas phase hydrogenation of 1,3-butadiene in an excess of propene (0.3% butadiene, 30% propene and 20% hydrogen), in order to simulate the process required for the purification of industrial alkenes streams to prevent poisoning of the polymerisation catalysts…
Abstract The increasing presence of pesticides in natural ecosystems has stimulated research to look for improved adsorbent materials which can be used to remediate and prevent soil and water contamination by these compounds. Among the different materials that have been assayed as adsorbents of pesticides are natural…
First-principles calculations show that atomic-scale surface roughness dramatically affects the electrical conductivity of thin films. Atomic clusters, 1–3 atoms high, deposited on the flat Cu(001) surface of an 11 monolayer thick film lead to a 30−40% reduction of its conductance. This is attributed to the destructio…
Experiments on (Ga,Mn)As in the low-doping insulating phase have shown evidence for the presence of an impurity band at 110 meV above the valence band. The motivation of this paper is to investigate the role of the impurity band in determining the magnetic correlations in the low-doping regime of the dilute magnetic s…
We demonstrate that the physical mechanism behind electroresistive switching in oxide Schottky systems is electroformation, as in insulating oxides. Negative resistance shown by the hysteretic current-voltage curves proves that impact ionization is at the origin of the switching. Analyses of the capacitance-voltage an…
The U.S. Department of Energy is sponsoring the Generation IV Initiative in the United States for the purposes of developing future-generation nuclear energy systems. Six systems have been selected for Generation IV consideration: gas-cooled fast reactor, lead-cooled fast reactor, molten salt-cooled reactor, sodium-co…
A target-specific MRI contrast agent for tumor cells expressing high affinity folate receptor was synthesized using generation five (G5) ofpolyamidoamine (PAMAM) dendrimer. Surface modified dendrimer was functionalized for targeting with folic acid (FA) and the remaining terminal primary amines of the dendrimer were c…
The magnetic entropy change of polycrystalline samples Gd, La(Fe0.92Co0.08)11.83Al1.17, LaFe10.8Si2.2, Mn5Ge2.7Ga0.3, Nd2AlFe13Mn3, and TbCo2 with a second-order phase transition has been investigated. A uniform phenomenological function that describes the magnetic entropy change is found for these materials. This cou…
A bacterial mediated synthesis of copper/copper oxide nanoparticle composite is reported. A Gram-negative bacterium belonging to the genus Serratia was isolated from the midgut of Stibara sp., an insect of the Cerambycidae family of beetles found in the Northwestern Ghats of India. This is a unique bacterium that is q…
The inhibitive action of 1-cinnamylidine-3-thiocarbohydrazide (CTCH) and 1,1ʹ-dicinnamylidine-3-thiocarbohydrazide (DCTCH) against the corrosion of carbon steel in 15% hydrochloric acid (HCl) was investigated using nonelectrochemical and electrochemical techniques. Potentiodynamic polarization studies revealed that th…
This paper presents our experiments and analysis of the electrical tree growing characteristics. The relationship between electrical tree propagation and the material morphology in XLPE cable insulation has been studied by researching the structure and growth characteristics of a double structure electrical tree. It h…
The benefits of stress: Prestressed multi-walled carbon nanotubes (PMWNTs; see picture) have smaller interwall spacings than normal multi-walled nanotubes (MWNTs) and significantly enhanced mechanical properties. Molecular simulations show that a 20% reduction in interwall spacing increases the interwall shear strengt…