Materials Literature
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Abstract Die Verknappung metallischer Ressourcen führt zu Bemühungen, auch komplizierte Werkstoffmischungen einer wirtschaftlichen Aufbereitung zuzuführen. Auftretende Probleme erfordern eine Erweiterung des Recyclingbegriffs analog zur Primärrohstoffaufbereitung. Ausgehend von einer allgemeinen Klassifizierung der We…
Solubility in the ternary fullerenol-d-CuCl 2 -H 2 O system at 25°C is studied by means of isothermal saturation in ampoules. It is established that the diagram consists of two branches corresponding to the crystallization of fullerenol-d crystallohydrate and copper(II) chloride dihydrate and contains a single non-var…
The structure of a new nonlinear optical crystal, Ca9Y0·5La0·5(VO4)7, was solved, for first time to our knowledge. It belongs to trigonal system with space group R3c, its unit-cell parameters are: a = 10·8717(2) Å, c = 38·0753(14) Å, V = 3897·34(18) Å3, Z = 6, dc = 6·3279 g cm−3. The thermal expansion, the special hea…
The synthesis of a series of asymmetric mixed 2,6-disubstituted (arylcarboxamido)(arylimino)pyridine ligands and their coordination chemistry toward a series of divalent first-row transition metals (Cu, Co, and Zn) have been explored. Complexes featuring both anionic N,N',N″-carboxamido and neutral O,N,N'-carboxamide…
Graphene–polymer nanocomposites have promising properties as new structural and functional materials. The remarkable mechanical property enhancement in these nanocomposites is generally attributed to exceptional mechanical property of graphene and possible load transfer between graphene and polymer matrix. However, th…
Molecular or ion transport through a single nanopore or nanopore array is a key process in a number of applications including: molecular separation, biosensing, energy storage, nanofluidics and nanoelectronics. In this study, the electrochemical and electrical properties of nanopore arrays were investigated by electro…
Electrical transport measurements and transient optical pump-probe experiments have been performed on epitaxial films of the electron doped Nd 1.83 Ce 0.17 Cu 4−δ compound for studying the non-equilibrium carrier dynamics in this material. Samples have been grown on (001)-oriented SrTiO 3 substrates by dc sputtering i…
Abstract One of the challenges facing the offshore oil and gas industry is the identification and quantification of internal corrosion for both topside and subsea process facilities. An increasing major cause of system failures and loss of production is that due to the presence of microorganisms that lead to the onset…
Abstract Testing of inhibitors for CO2-corrosion at elevated temperatures is often performed so as to delay or avoid formation of a protective iron carbonate layer. Inhibitor performance in the presence of FeCO3 (partly or fully covering the steel surface), however, also deserves attention. This is relevant for parts…
This Letter presents a Cherenkov radiation oscillator with an electron beam travelling over a finitely thick plate made of negative-index materials. In such a scheme, the external reflectors required in the traditional Cherenkov oscillators are not necessary, since the electromagnetic energy flows backward in the nega…
Natural nanostructures represent an interesting group of materials which have been finely tuned through the imperatives of species survival and which represent suitable templates for man-made applications. We have investigated the surface properties on two species of cicadas, Cryptotympana mandarina and C. atrata. The…
We propose and demonstrate light-sensitive nanocrystal skins that exhibit broadband sensitivity enhancement based on electron transfer to a thin TiO2 film grown by atomic layer deposition. In these photosensors, which operate with no external bias, photogenerated electrons remain trapped inside the nanocrystals. These…
The generation of spin current and spin polarization in a two-dimensional electron gas structure is studied in the presence of Dresselhaus and Rashba spin-orbit couplings (SOC), the strength of the latter being modulated in time by an ac gate voltage. By means of the non-Abelian gauge field approach, we established th…
Through integrated molecular dynamics (MD) simulations and experimental studies, we demonstrated the feasibility of an ion-irradiation-and-annealing based phonon engineering technique to enhance thermal conductivity of carbon nanotube (CNT) films. Upon ion irradiation of CNT films, both inter-tube defects and intra-tu…
Correlative electron tomography and atom probe tomography have been carried out successfully on the same region of a commercial 8090 aluminum alloy (Al-Li-Mg-Cu). The combination of the two techniques allows accurate geometric reconstruction of the atom probe tomography data verified by crystallographic information re…
The layered superconductors β- M NCl with the critical temperatures T c = 14 K ( M = Zr) − 25 K ( M = Hf) were investigated by means of scanning-tunneling microscopy/spectroscopy and break-junction tunneling spectroscopy. The STM/STS was used to investigate the surface electronic structures in nanometer length scale,…
Abstract With the increasing demand of gas worldwide, some highly sour oil and gas reservoirs have been explored in Russia, Middle East, China and North America. The development of such fields, which contain a high percentage of sour gas, represents significant technical challenges regarding drill pipe integrity and o…
We studied growth substrate temperature dependent morphologies of BaHfO 3 (BHO) nano-rods for SmBa 2 Cu 3 O y , (SmBCO) films with BHO fabricated by pulsed laser deposition (PLD) method. The morphology of BHO nano-rods within the SmBCO matrix could be controlled by changing substrate temperatures adoping a Low Tempera…
The results obtained from calculations of flow accelerated corrosion of equipment and pipelines operating at nuclear power plants constructed on the basis of PWR, VVER, and RBMK reactors carried out using the EKI-02 and EKI-03 software tools are presented. It is shown that the calculation error does not exceed its val…
We developed an integrated AC-DC magnetometer using a high critical temperature superconducting quantum interference device (high- T c SQUID) to evaluate the static and dynamic magnetic properties of magnetic nanoparticles (MNPs) in solution. The flux-transformer method consisted of first-order planar and axial differ…