Materials Literature
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low-melting-temperature 合金(LMTA ) 的热抵抗热接口材料(提姆) 被激光闪光方法在加热的不同阶段前后测量。结果证明 LMTA 提姆的热性能在加热进程期间被降级。降级可以主要被归因于在 Cu 和熔融的 LMTA 之间的界面的反应，这被建议。由于在 solidliquid 接口的金属间化合的化合物(IMC ) 的快生长率，厚易碎的 IMC 是在接口形成的层，它使裂缝容易开始并且膨胀。否则，铟的损失和在 LMTA 的听内容将在界面的反应期间做 TIM 层增加的融化的点，那么， TIM 层不在操作温度融化。
Large-area graphene sheets on TiO2 nanotube arrays (RGO/TNAs) were fabricated using a simple elec- trochemical method. The RGO content loaded on the arrays was controlled by changing the electrochemical reaction time. The microstructures and properties of RGO/TNAs were characterized and measured using field emission s…
This paper proposes a new composite model which contains two types of grains: the normal nano- grains (ranging from 20 to 100 nm) and the finest grains (ranging from 2 to 4 nm). The finest grains were considered to be a part of the triple junctions, denoted as super triple junctions (STJs). The model describes the com…
Wir untersuchen zunachst das Hubbard-Modell des anisotropen Dreiecksgitters als effektive Beschreibung der Mott-Phase in verschiedenen organischen Verbindungen mit dreieckiger Gitterstruktur. Um die Eigenschaften am absoluten Nullpunkt zu bestimmen benutzen wir die variationelle Cluster Naherung (engl. variational clu…
The mechanical, electrical, and thermal expansion properties of carbon nanotube(CNT)-based silver and silver–palladium(10:1, w/w) alloy nanocomposites are reported. To tailor the properties of silver, CNTs were incorporated into a silver matrix by a modified molecular level-mixing process. CNTs interact weakly with si…
AIM:To investigate the effect of zinc protoporphyrin IX on the response of hepatoma cells to cisplatin and the possible mechanism involved.METHODS:Cytotoxicity was determined using the3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay.Apoptosis was determined by a flow cytometric assay.Western blotting…
This paper reviewed the exploration path and development strategy of SINOPEC in the bio-based chemicals and materials industry.It introduced the innovation practice and phase achievements gained by SINOPEC in recent years in the fields of bio-based monomers,bio-based materials and degradable materials,which mainly inc…
In this work, poly(3,4-ethylenedioxythiophene)(PEDOT) powders were successfully synthesized by chemical polymerization. PE-DOT/acetylene black/poly(tetrafluoroethylene)(PTFE) and acetylene black/PTFE were mixed in weight ratios of 4.5/4.5/1 and 9/1, respectively. The composites were made into slurries and spread on a…
H13 steel is well-established for hot-work applications in different parts of the world, combining good hot strength, plasticity, toughness, oxidation resistance and thermal fatigue resistance due to its reasonable design of alloying elements. However, the alloying elements segregation and coarse primary carbides are…
To achieve exfoliated graphite with low density and good suspensibility,the mixture of nitric acid and phosphoric acid,and the mixture of nitric acid and acetic acid were employed as intercalating agents;potassium permanganate was used as oxidant,and highly exfoliated graphite was prepared by two-step intercalation.Th…
In this paper, a facile approach for prep- aration of AuAgS/Ag2S nanoclusters was developed. The unique AuAgS/Ag2S nanoclusters capped with biomolecules exhibit interesting excellent optical and catalytic properties. The fluorescent AuAgS/Ag2S nanoclusters show tunable luminescence depending on the nanocluster size. T…
Directional solidification of rod-like eutectic is an important route to produce in situ composites.The rod-like phase spacing of composites is a crucial parameter in determining the properties of the materials.In this study,the rod-like phase spacing of melt-grown in situ eutectic composites is estimated by the metho…
Fluorescent metal nanoclusters(NCs) have received extensive attention for their potential uses in bionanotechnology.Here,we develop a facile strategy to synthesize near-infrared fluorescent silver nanoclusters(Ag NCs) stabilized by MUC1 aptamer.The MUC1-Ag NCs are characterized by UV–Vis absorption spectroscopy,fluore…
We study the mechanical behavior of fi ber-reinforced hydrogel composites. Most hydrogels are weak and brittle. This makes it diffi cult to reinforce them with fi bers as the fi bers cut through the hydrogel under load. If the hydrogel is tough, however, the composite does not fail by fi ber cutting; instead it fails…
=30%,35% 和 40%) 为精确，光系统应用被粉末冶金学技术制作。composites 没有孔，原文如此，粒子在 composites 一致地散布了。热扩大的吝啬的线性系数(20100
A photochromic rhodamine B-based material containing Cd(Ⅱ) as bridge was facilely prepared. The 4-methoxylsalicylaldehyde rhodamine B hydrazone Cd(Ⅱ) complex displayed unusual ring-open response upon 365 nm UV irradiation,exhibiting long photochromic lifetime and good fatigue resistance. The UV-induced ring-open of th…
研究了二元cu—Cr合金Cu-0．5Cr；Cu-7．0CrCu-15．0Cr（原子分数，％）在700和800℃空气中的高温氧化行为．合金的氧化动力学基本遵循抛物线规律，其中Cu-0．5Cr合金的氧化近似于纯cu的氧化行为，氧化产物主要为Cu的氧化物，Cr2O3颗粒弥散分布于氧化膜内层靠近膜／基体界面；Cu-7．0Cr和Cu-15．0Cr氧化后外层形成CuO和Cu2O，内层为Cr2O3和Cu2O·Cr2O3混合氧化物，并含有部分未氧化的Cr颗粒．合金的氧化速率随Cr含量的增加而降低，并且β相尺寸减小也利于提高Cu—Cr合金的抗氧化能力．合金氧化膜结构和生长规律与合金的原始显微组织和口相分布状态有关．
We developed an effective cleaning method based on a centrifugal effect to remove the surfactant cetyltrimethylammonium bromide(CTAB) from the surfaces of noble metallic such as 50 nm gold nano-octahedrons. The cleaned surface can be obtained by choosing the proper centrifugal speed and times under the appropriate tem…
In this study, YPO4:Eu 3? microspheres with different Eu 3? dosage concentration were fabricated by a facile hydrothermal route at 200 C for 10 h in the presence of citric acid. The YPO4:Eu 3? samples were characterized by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), scanning electron micros…
。尤其是，在 5 点， K，抗磁性，常磁性和强磁性在 thiol- 共存， hydroxyland carboxyl-functionalized graphene 当 amino-graphene 展出主导的常磁性时，类似于低温度的磁力在去。这些结果显示那抗磁性，常磁性和强磁性能在三个状态之中在 graphene 衍生物和磁性的转变共存能被完成它取决于边状态，空缺，化学的做和依附的功能的组。获得的结果可以帮助关于 graphene 相关的材料的磁力解决当前的争吵。