Materials Literature
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Electromagnetic wave absorbers(EMWAs)(i.e.microwave wave absorbers) are important materials for military equipment.Ideal EMWA should exhibit thin matching thickness,low density,broad bandwidth,and strong EM absorption.The recent advances of EMWA were reviewed in this study,and the shortcomings in current studies and a…
Water soluble conducting polymer composite poly(vinyl alcohol-threonine) (PVAT) was chemically synthesized and characterized by FTIR, LCZ and SEM-EDX analysis. The corrosion inhibition performance was evaluated for mild steel corrosion in 1M HCl at various concentrations, and the results were compared with that of the…
Complete List of Authors: Elmholdt, Tina; Aarhus University Hospital, Clinical Medicine; Aarhus University Hospital, Dermatology Pedersen, Michael; Aarhus University Hospital, Clinical Medicine; Aarhus University Hospital, MR Research Centre Jorgensen, Bettina; Aarhus University Hospital, Nephrology Ramsing, Mette; Aa…
酵素糖化処理後のスギ残渣の化学組成分析を行うとともに25℃での水蒸気吸脱着等温線を測定し，吸放湿特性を検討した。さらに，糖化残渣を原料に熱圧プレスによるモールド成型またはポリプロピレン（PP）との混練を行ったのちに射出成型するとともに，得られたそれぞれの成型物について水分特性や寸法安定性，強度特性を評価した。熱水洗浄した糖化残渣は，糖化前のスギ木粉（コントロール）と比べホロセルロースの比率が半分にまで減少した場合でも，相対湿度60％以上の高湿度域で高い吸湿性を示した。しかしながら，同じ糖化残渣を用いたモールド成型物では吸湿性の低下が認められるとともに厚さ膨潤がスギよりも大きく低下した。一方，試料とPPを同じ比率で混練したのち射出成…
To obtain ideal Goss-oriented Fe-3.1%Si electrical steel, we studied the Goss orientation and microstructure during the various processes from hot-band annealing to the primary recrystallization. In particular, we examined the effect of the heating rate (20°C/s and 150°C/s) on the primary recrystallization behavior. I…
Nanocrystalline powders showed the distinguishable difference in catalytic, electrical and optical properties from macroscopic, microscopic and bulk materials. Among them, zinc oxide (ZnO) is one of the candidates that have been attracting attention because of its wide band gap energy of about 3.37 eV. In this work, Z…
Corrosion of rails has been a cause of concern for the \nSouthern Railways. Out of many causes, corrosion due \nto toilet droppings is more pronounced. In this study, \nthe role of bacteria, viz. heterotrophic bacteria, manganese \noxidizers, iron bacteria and ureolytic bacteria \non rails have bee…
This paper was presented at the 3rd Micro and Nano Flows Conference (MNF2011), which was held at the Makedonia Palace Hotel, Thessaloniki in Greece. The conference was organised by Brunel University and supported by the Italian Union of Thermofluiddynamics, Aristotle University of Thessaloniki, University of Thessaly,…
Based on the π-electron tight-binding model, for zigzag graphene nanoribbons(ZGNRs) the influence of boundary structure on band structure, specially the electrons of the valence band and the conductor band near the Fermi level, are studied in detail. We investigate the band structures and the distributions of electron…
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In this paper we present the morphological, structural, optical and electrical properties of aluminium doped zinc oxide films prepared by spin coating technique from a zinc acetate dihydrate and 2-methoxyethanol (0.5M) solution. AlCl(3) and Al(NO(3))(3) were used as doping agents in different concentrations (1at%, 4at…
In this paper, we report the novel and a very economical green route for synthesis of biocompatible Ag nanoparticle employing table sugar as a capping and a reducing agent in a size range of 10-20 nm. The resulting water soluble Ag nanoparticles were characterized through UV-VIS, IR, XRD and TEM analysis. The resultin…
New medical clay/polyvinyl alcohol nanocomposites of similar composition were prepared by both solution intercalation and mechanical mixing. Thermal and structural characterization of the precursors and of the composites showed that under proper parameters of mixing/milling process the composite can achieve structural…
• We developed a Steinmetz-like curve fit, and applied it to all the core characterization data. For the first time, a formula is available to predict loss accurately over a wide frequency range, avoiding glitches between frequency ranges that occur with other models. Furthermore, the model directly predicts loss with…
Arylacylhydrazones of 2,3-dihydroxybenzaldehyde are appropriate ligands for the preparation of heterodinuclear triple-stranded helicates involving high coordinated lanthanide(III) ions. In the present study, three different kinds of substituents are introduced at the ligands in order to modify the organic periphery of…
This paper reports on the first integration of SMA wires into silicon based MEMS structures using a standard wire bonder. This approach allows fast and efficient placement, alignment and mechanical attachment of NiTi-based SMA wires to silicon-based MEMS. The wires are mechanically anchored and clamped into deep-etche…
Redox active polymers with phenothiazine moieties have been synthesized by Atomic Transfer Radical Polymerization (ATRP). These novel polymers reveal bistable behaviour upon application of a bias potential above the oxidation threshold value. Using conductive Scanning Force Microscopy, two distinguishable conductivity…
The equivalent of a blazed diffraction grating can be formed from an array of metamaterial elements arranged so as to produce a linear gradient in the effective refractive index. By spreading the gradient over a multiwavelength distance, and repeating the pattern many times, a gradient index (GRIN) diffraction grating…
The two-dimensional problem of electromagnetic radiation from a line source located inside an elliptic-cylinder confocal sheath of double-negative metamaterial is solved exactly by separation of variables. Numerical results are presented and discussed for the radiation pattern and the field inside the sheath, as funct…
This paper reports on the wafer-level fixation and electrical connection of pre-strained SMA wires on silicon MEMS using electroplating, providing high bond strength and electrical connections in one processing step. The integration method is based on standard micromachining techniques, and it potentially allows mass…