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Journal of Rare Earths 2010年第S1期28卷 437-441页

作者：王军丽章俞之徐瑞东詹鹏 Research Center for Analysis and Measurement Kunming University of Science and Technology Key Laboratory of Inorganic Coating Materials Chinese Academy of Sciences Faculty of Metallurgical and Energy Engineering Kunming University of Science and Technology

Ni-W-P matrix composite coatings reinforced by CeO2 and SiO2 nano-particles were prepared on common carbon steel surface by double pulse electrodeposition and the deposition mechanism was *** results showed that the composite coatings with amorphous structure were obtained *** initial growth behavior had alternatives and the nucleation was inhomogeneous because of obvious composition *** the pulse deposition time increasing,some pearlite microstructures of the substrate were covered by some deposits and the composition fluctuation *** pulse currents promoted to form a great number of atomic beams composed of Ni,W and P atoms or CeO2 and SiO2 nano-particles as the core,which inhabited the growth of atomic *** pulse currents eliminated concentration polarization and dissolved some surface boss of atomic *** solution of W and P atoms within Ni grains and embedding of CeO2 and SiO2 nano-particles within Ni-W-P matrix metal made atomic arrangement ***,the atomic beams grew to amorphous small particles.

关键词： double pulse electrodeposition metal matrix composite coatings nano-particles deposition mechanism rare earths

Surface tension of lithium bromide aqueous solution/ammonia with additives and nano-particles

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Journal of Central South University 2015年第5期22卷 1979-1985页

作者：蔡伟华孔伟伟王悦朱蒙生王新雷 School of Energy Science and Engineering Harbin Institute of Technology Department of Agricultural and Biological Engineering University of Illinois at Urbana-Champaign School of Municipal and Environmental Engineering Harbin Institute of Technology

In order to investigate the effect of additives and nano-particle on the surface tensions of lithium bromide(Li Br) aqueous solution/ammonia, many experiments were carried out based on Wilhelmy plate method. Firstly, the surface tension of Li Br aqueous solution with 1-octanol was measured and then the comparison between the measured results and previous experimental results was given to verify the measuring accuracy. Some new additives, such as cationic surfactants cetyltrimethyl ammonium chloride(CTAC), and cetyltrimethyl ammonium bromide(CTAB) were chosen in the experiments. The experimental results show that CTAC and CTAB can obviously reduce the surface tension of Li Br aqueous solution/ammonia. In addition, it is found that nano-particles cannot remarkably decrease the surface tension of Li Br aqueous solution/ammonia. However, the mixed addition of additives and nano-particles can remarkably affect the surface tension of Li Br aqueous solution/ammonia. That is to say, additives play more important role in reducing the surface tension of Li Br aqueous solution/ammonia. But nano-particles may enhance the heat transfer in the absorption refrigeration process.

关键词： lithium bromide ammonia additives nano-particles surface tension

Pressure-Induced Structural Transitions of the Zinc Sulfide nano-particles with Different Sizes

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Journal of Materials Science & Technology 2007年第2期23卷 193-195页

作者： Yuewu PAN Jie YU Zhan HU Hongdong LI Qiliang CUI Guangtian ZOU Department of Material Science and Engineering Harbin Institute of Technology Shenzhen Graduate School Shenzhen 518055 China National Laboratory of Superhard Materials Institute of Atomic and MoIecular Physics Jilin University Changchun 130023 China

ZnS nano-particles with average sizes of 10 nm and 5 nm were fabricated by sol-gel method, and their pressure-induced phase transformations were in-situ examined in a diamond anvil cell by energy dispersive X-ray diffraction （EDXD） from ambient pressure to 35.0 GPa. From the obtained interplanar spacing data,the volume compression ratios were derived at different pressures, and then the bulk modulus and its pressure derivative were obtained by fitting to the Murnaghan equation. It is found that both ZnS nano-particles initially in the zinc-blende phase transformed to cubic NaCl structure in the presence of pressure and the transition was reversible when the pressure was released. Moreover, it is suggested that a smaller particle size will induce a larger transition pressure.

关键词： nano-particles ZnS Phase transformations Synchrotron radiation

Comparison of PVDF porous membranes modified by two different methods using composite nano-particles

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Journal of Harbin Institute of Technology(New Series) 2010年第6期17卷 751-755页

作者：赵晴时文歆于水利吕慧芦艳 State Key Laboratory of Urban Water Resource and Environment Harbin Institute of Technology State Key Laboratory of Pollution Control and Resource Reuse Tongji University

To improve the hydrophilicity and anti-fouling performance in water treatment,both entrapped method and deposited method were used to modify polyvinylidene fluoride(PVDF)porous membrane with composite Al2O3/TiO2 *** PVDF membrane was prepared and its property was also compared with that of the modified *** permeation flux and anti-fouling performance were measured using a membrane *** contact angle between water and membrane surface was detected in order to denote the membrane *** morphology and surface structure were examined by atomic-force microscopy(AFM)and scanning electron microscopy(SEM).Experimental results showed that modified membranes had higher permeation fluxes than that of the neat PVDF *** addition of nano-particles altered membrane surface morphology and increased surface *** to the hydrophilicity of nano-particles,however,the membrane anti-fouling performance was improved instead of *** entrapped membrane exhibited better anti-fouling performance than the deposited membrane and the neat membrane.

关键词： PVDF membrane entrapped method deposited method composite nano-particles membrane fouling

Random matrices applied to superconductivity in nano-particles

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Chinese Physics B 2003年第12期12卷 1445-1450页

作者：陈志谦程南璞李振亚 SchoolofMaterialScienceandEngineering SouthwestChinaNormalUniversityChongqing400715China DepartmentofPhysics SuzhouUniversitySuzhou215006China

In this paper we introduce an approach in which the random matrices are applied to superconducting nano-particles,and obtain the effects of enhancement and attenuation simultaneously. We also explore the influence of magnetic fields on the superconductivity and the condensation energies in nano-particles. Comparisons with other models and some experimental results are given.

关键词： superconductivity random matrices nano-particles

Electronic spin susceptibility of metallic superconductive nano-particles

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Chinese Physics B 2006年第5期15卷 1075-1080页

作者：李凤陈志谦李庆 School of Materials Science and Engineering Southwest University Chongqing 400715 China

We have observed the thermodynamic properties of metallic superconductive nano-particles in the grand canonical ensemble; and the level distribution and the level correlation between the discrete electronic energy levels are considered in the calculation of the electronic spin susceptibility of the ensemble numerically. The quantum effect, even-odd effect and other special effects existing in the metallic nano-particles are also studied in this article.

关键词： nano-particles random matrices theory spin susceptibility

Friction and Wear of Polymer Composites Filled by nano-particles: A Review

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World Journal of nano Science and Engineering 2012年第1期2卷 32-39页

作者： Ayman A. Aly El-Shafei B. Zeidan AbdAllah A. Alshennawy Aly A. El-Masry Wahid A. Wasel Mechatronics Section Department of Mechanical Engineering Faculty of Engineering Taif University Taif Saudi Arabia

Composites formed by adding nano-scale particles to a polymer matrix results in improving electrical, mechanical, and thermal properties of the composite. Good tribological properties can be obtained for polymers filled with nano-scale fillers compared to that filled with micro-scale particles. The friction and wear resistance of these composites is found to increase with increasing filler concentration. It is also possible to use multi-functional fillers to develop high performance composites which cannot be achieved by using a single filler.

关键词： Friction Wear Polymer Composites nano-particles

Effect of Aluminum nano-particles on Microrelief and Dielectric Properties of PE+TlInSe<sub>2</sub>Composite Materials

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Open Journal of Inorganic Non 2015年第1期5卷 11-19页

作者： E. M. Gojayev Kh. R. Ahmadova S. I. Safarova G. S. Djafarova Sh. M. Mextiyeva Azerbaijan Technical University Baku Azerbaijan

The paper presents the results of studies surface microrelief, frequency-temperature characteristics of the imaginary part of the dielectric permittivity and dielectric loss of PE+TlInSe2 composite materials in 25。C - 150。C temperature and 25 Hz - 1 MHz frequency range before and after application of the aluminum nano-particles with a size of 50 nm. The change in the amount of semicon-ductor filler TlInSe2 and aluminum nano-particles changes the state of the surface and the frequency-temperature characteristics of composite materials PE+xvol.%TlInSe2, which allows to obtain composites with the desired dielectric permittivity and dielectric loss.

关键词： Surface Microrelief Aluminum nano-particles Dielectric Permeability Tangent of the Angle Dielectric Loss

Lichen-Based nano-particles, an Emerging Antibacterial Approach

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Journal of Materials Science and Chemical Engineering 2021年第8期9卷 10-20页

作者： Taswar Ahsan Liu He Yu Miao Bingxue Li Yuanhua Wu College of Land and Environment Shenyang Agricultural University Shenyang China College of Plant Protection Shenyang Agricultural University Shenyang China

Bacterial pathogens produced resistance against the existing antimicrobial applications. Scientist trending towards the potent novel eco-friendly and cost effective antimicrobial approaches and fabricating bio-based nano-particles. In this regard, several bio-materials have been investigated, such as, bacteria, fungi, algae, lichens and green plants. Lichens are introduced as an emerging source to synthesis bio-based nano-particles. The lichen-based metal nano-materials, especially fabricated by applying green chemistry strategies, have resulted significant alternates to traditional antimicrobial applications. Several studies break out and revealed that lichen-based nano-particle showed strong antimicrobial efficacy, as the lichens are biologically compatible. Current review summarizes an overview of lichen-based nano-materials, their fabrication, their applications, and their molecular action mechanism. As it emerged a broad spectrum antimicrobial agent for pharmaceutical and agricultural applications.

关键词： Lichens nano-particles Antimicrobial

Research on the Fabrication of Dispersive nano-particles and Whiskers

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Research on the Fabrication of Dispersive Nano-Particles and...