Materials Literature
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To enhance the validity of signal and optical reflectivity on DVD-RAM, in this study we performed variable laser recording power experiments, and established the theoretical model for simulating the features that of the groove/land and header on a DVD-RAM stamper. This is the first work showing the features of the gro…
Abstract Chrysotile from Thetford Mines in Quebec, Canada was treated first with mild formic or oxalic acid at concentrations of 0.5 to 2.0 N at 200°C in Teflon-lined 12.0 mL Parr bombs. The reaction products were identified by X-ray diffraction as a poorly crystalline Fe-bearing kerolite-like 2:1 layer silicate (whic…
The local structure of the chemical bond of iron ions implanted into SiO 2 glasses (implantation energy, 100 keV; fluence, 1 × 10 16 cm −2 ) is investigated using x-ray emission and absorption spectroscopy. The Fe L x-ray emission and absorption spectra are analyzed by comparing them with the corresponding spectra of…
A spectroscopic Stokes polarimeter is used to directly measure the linearly, circularly, and randomly polarized components of light obtained on transmission of unpolarized light through thick chiral nematic liquid-crystal cells in the stop band. The Stokes parameters are simulated to fit the experimental data by use o…
Filling of carbon nanotubes with metals or semi‐metals (such as Se, Bi, …) raises the possibility of novel nanomaterials synthesis with technologically interesting properties on a nanometric scale. Indeed it offers the possibility to enhance the physical properties of both the encapsulated and encapsulating materials.…
Abstract The structure of dioctahedral true micas such as muscovite and celadonitic muscovite (2 M 1 polytype, space group C 2/ c ) is mostly affected by variations of the octahedral Al ( VI Al) content. Crystals with greater Mg, Fe substitutions ( i.e. celadonitic muscovite) reduce the dimensional difference between…
To extend the technological potential of thermally induced ultrasonic emissions from the nanocrystalline silicon (nc-Si) devices we reported previously a driving mode suitable for operation in the audio-band has been studied. The device is composed of a patterned surface electrode, an nc-Si layer, and a single-crystal…
In recent years, several projects have advanced the research and development related to the automation of the protein crystallization process. However, the evaluation of crystallization states has not been completely automated yet. In the usual crystallization process, the researchers evaluate the crystallization grow…
Spinel ferrites, MFe 2 O 4 (M= Co, Ni, Cu, Zn) have been prepared by a redox chemical reaction between aqueous solutions of metal nitrates, ferric nitrate and oxalyl dihydrazide (ODH). On rapid heating the reaction mixtureundergoes an abrupt exothermic redox chemical reaction that facilitates atomic scale mixing of th…
Raman spectra of stoichiometric glass (g) g-As40Se60 have been investigated. It was observed that the increasing of excitation radiation energy h >E0 (E0 is pseudogap width) changes the shape and position of Raman peaks of g-As40Se60. The structure and vibration spectra of some As-Se clusters were calculated ap…
Upconversion fluorescence in an erbium-doped transparent oxyfluoride glass ceramic is studied by use of fluorescence decays and time-dependent fluorescence and excitation spectra. Sequential two-photon absorption upconversion and energy transfer upconversion are reported, and their origins are identified. Sequential t…
Aluminium is a very important material used in the semiconductor industry as an interconnection layer. The most popular method of depositing aluminium films is the physical vapour deposition (PVD) process. The objective of the present study is to improve aluminium film uniformity by optimising the process conditions t…
Abstract An aqueous solution of 1,1′-diethyl-2,2′-quinocyanine bromide (PIC-Br) containing highly concentrated counter ions provided by NaCl was prepared by heating the solution at 90 °C. Upon cooling the solution to room temperature, it transformed into a gel-like state. Optical microscopy revealed that fiber-shaped…
Abstract As a result of increasing demands on the product profile of solid detergent products, the requirements on the ingredients and the manufacturing process for these components are growing as well. A suitable way to achieve the objectives embraces the transformation to a granulated product with tailor‐made proper…
In a wet cleaning process, it is an important and difficult task to dry wafer completely without generating oxide residues and water marks after the HF process. In order to obtain ideal wafer surface after the HF process, the condition of the rinse step is as important as that of the dry step. For example, in a single…
When preparing an alternating sequence of magnetic (Co or Ni) and non-magnetic (Cu) layers by electrodeposition using the two-pulse plating technique, a dissolution of the less-noble magnetic Co and Ni atoms can take place during the deposition of the more noble and non-magnetic Cu atoms. This process results in chang…
We propose a magnetic force control device consisting of laminate composites of magnetostrictive material and piezoelectric material. The magnetic force control is based on energy conversion in the composite, such that the variation of magnetization of the magnetostrictive material induced by the piezoelectric materia…
The unique mechanical and electronic structure of Carbon nanomaterials has made them good candidates for use in biosystems. Biomolecule‐functionalized carbon nanomaterials have been of interest in many chemical and biochemical areas in both fundamentals and application. Bioconjugates consisting of carbon nanomaterials…
The X-ray diffraction technique has greatly improved our understanding of the function and properties of filamentous systems of biological and organic polymers by providing structural information at a molecular level. Although X-ray diffraction remains the primary method for determining fiber structures, neutron diffr…
The UK environmental e-science initiative supports the development and modification of simulation tools used to study radiation damage effects. We discuss the development and modification to the DL_POLY molecular dynamics (MD) code. Using the newly developed tools, we study the effects of radiation damage related to t…