Materials Literature
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We investigate the small amplitude oscillatory shear permeation flow (SAOSPF) of cholesteric liquid crystal polymers (CLCPs) using a mesoscopic model obtained from the Doi kinetic theory for flows of CLCPs. We model the system by Stokes hydrodynamic equations coupled with orientational dynamics and study the frequency…
In order to satisfy performance and long life requirements for hot forging die, Ni60-SiC cermet coating was prepared on the high speed steel W6M05Cr4V2by plasma cladding technology. Metallurgical bonding coating with enough bonding strength was obtained after optimizing the cladding parameters. The clad coating compos…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation D. Rouchon, L. Becerra, O. Renault, K. Kaja, D. Mariolle, N. Chevalier; Raman Spectra and Imaging…
Recent research results indicated that eddy current conductivity measurements might be exploited for nondestructive evaluation of subsurface residual stresses in surface‐treated nickel‐base superalloy components. This paper presents new results that indicate that in some popular nickel‐base superalloys the relationshi…
Online testing of cable systems allows the cable owner to get a check up of one's system at operating voltage while all current activity is normal. No switching operations and no outage time is incurred while this effective capacitance testing is done. The entire system is analyzed including the cable, switchgear and…
Dependence of the magnetic and magnetooptical properties of an exchange-coupled NiFe/DyCo bilayer system on the thickness (t DyCo) of a magnetically hard layer has been studied. It is established that the unidirectional anisotropy vanishes at t DyCo ∼ 400 Å, while the coercive field in the magnetically soft layer beco…
Comb-shaped ZnO powder was synthesized through the direct melt oxidation of a source material mixed with Al, Zn, and graphite in air at atmospheric pressure. The comb-like structures were fabricated when the source material mixed with graphite, whereas only tetrapod-shaped ZnO powder was obtained for the source materi…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation U. S. Dinish, Ajay Agarwal, Fu Chit Yaw, Malini Olivo; Comparison of the Performance of SERS Subs…
Experimental magneto-optical Kerr effect spectra of Mn-implanted Ge samples are interpreted using an ab-initio theoretical model based on density functional theory. The presence of Mn in the Ge matrix is accounted for considering either Mn precipitation as Mn 5 Ge 3 nanoparticles or as perfect dilution. The Mn concent…
We demonstrate a photonic band gap (PBG) from one-dimensional (1D) periodic structures created by a double-layer unit cell with an air layer and an anisotropic nonmagnetic left-handed metamaterial (LHM) layer whose permittivity elements are partially negative. The requirements imposed on the materials and structures t…
We evaluated the hemodynamics of tissue-engineered hybrid graft in vivo. The hybrid expanded polytetrafluoroethylene (ePTFE) scaffold was fabricated by coating the ePTFE graft with poly (lactide-co-glycolide) (PLGA) solution. This scaffold was turned into an engineered hybrid graft by culturing smooth muscle cells on…
Strongly hydrophobic ammonium ionic liquids penetrating the wood structure and protecting solid wood from water absorption were developed. By covering the surface of wood with ammonium ionic liquid the wood is hydrophobically and antiseptically protected for a long time. As it was mentioned above, swelling and water a…
In this study, a closed loop low-temperature wind tunnel was custom-built and uniquely used to investigate the anti-icing mechanism of superhydrophobic surfaces in regulated flow velocities, temperatures, humidity, and water moisture particle sizes. Silica nanoparticle-based hydrophobic coatings were tested as superhy…
We examined the interaction between several ligands and alkaline (M(+)) or lanthanide (Ln(3+)) ions using eta-chi diagrams. eta and chi represent absolute hardness and absolute electronegativity, respectively. Based on the diagrams, new double-stranded amino acid chelators (1) conjugated to Cat (catechol) were synthes…
In the entire history of commercial nuclear power so far, only two major accidents leading to damage of reactor core have taken place. One is Three Mile Island (TMT) accident (1979), which is caused by a series of human error, and the other is Chernobyl accident (1986), which is due to the combined reason of design de…
水に超音波を照射すると，キャビテーションの作用によりヒドロキシルラジカル（ · OH）や過酸化水素（H2O2）などの活性酸素種が生成され，それらが種々の化学作用をもたらす．本研究ではルミノールの電気化学発光反応（electrochemiluminescence ; ECL）を用いて超音波反応場の化学作用を評価する新しいアプローチを提案した．28，45，100，490 kHzの各周波数の超音波を水溶液に照射し，生成したH2O2をECLによって測定した結果，ECLの強度は照射時間に依存して増大し，超音波の周波数が高いほど超音波反応効率（SE値）が大きいことが分かった．超音波反応場で生成した · OHは一般的に反応性が高く，他のラジカル…
Wetting phenomena have occupied an important position in the field of high temperature metal processing for a long time. The difficulties encountered in the high temperature experiments—especially the separation of one effect from another—have frustrated efforts to achieve a full understanding of the dynamic wetting p…
Integration possibilities of BaxSr1-xTiO3(BST) based tunable thin film bulk acoustic wave resonators (TFBAR) using all-dielectric SiO2/AlN Bragg reflectors deposited on a high resistivity silicon strate are considered. SiO2/AlN reflectors withstand the high deposition temperature (>600C) of the BST films opening up po…
球状強誘電体ペレット（SrTiO3（ε=330）あるいはBaTiO（ε=15,000）を充填した非平衡プラズマ反応器を用いてトルエンの分解実験を行った．SrTiO3を充填した場合の方がBaTiO3を充填した場合よりもトルエンの分解効率，NOxの生成抑制効果ともに高くなった．これらの充填剤による効率の違いを明らかにするために，オシロスコープを用いてプラズマ発生時の印加電圧波形と放電電流波形を調べた．どちらの充填剤を用いた場合も，プラズマ生成とともに数多くの放電パルスが観察された．しかしながら，最大放電パルス電流値やパルス放電電流の1サイクルでのピーク数は，投入電力が同じ場合でも充填剤によって大きく異なることが明らかになった．これらの…
This article conducted a comparative analysis on thin film transistors (TFTs) fabricated by using the excimer laser annealed (ELA) polycrystalline silicon (poly-Si) and those fabricated by using the Ni-sputtered ELA poly-Si. The grain size of the Ni-sputtered ELA poly-Si is 3 times greater than that of the ELA poly-Si…