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Journal articles on the topic 'Nano-particle'

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Author: Grafiati
Published: 4 June 2021
Last updated: 21 February 2023

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1

Ligai, Slav, Sergey Pravdin, and Maria Ligai. "Parametric Nano Particle Cleaning." ECS Transactions 11, no. 2 (December 19, 2019): 377–84. http://dx.doi.org/10.1149/1.2779401.

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2

Walker, John G. "Improved nano-particle tracking analysis." Measurement Science and Technology 23, no. 6 (May 15, 2012): 065605. http://dx.doi.org/10.1088/0957-0233/23/6/065605.

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3

Tomita, Masato, Yahachi Saito, and Takayoshi Hayashi. "LaC2Encapsulated in Graphite Nano-Particle." Japanese Journal of Applied Physics 32, Part 2, No. 2B (February 15, 1993): L280—L282. http://dx.doi.org/10.1143/jjap.32.l280.

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4

Cristiano, R., M. Ejrnaes, A. Casaburi, N. Zen, and M. Ohkubo. "Superconducting nano-strip particle detectors." Superconductor Science and Technology 28, no. 12 (November 2, 2015): 124004. http://dx.doi.org/10.1088/0953-2048/28/12/124004.

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5

Li, Haifeng, Reza Sadr, and Minami Yoda. "Multilayer nano-particle image velocimetry." Experiments in Fluids 41, no. 2 (May 30, 2006): 185–94. http://dx.doi.org/10.1007/s00348-006-0155-4.

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6

Selmke, Markus, Marco Braun, and Frank Cichos. "Nano-lens diffraction around a single heated nano particle." Optics Express 20, no. 7 (March 22, 2012): 8055. http://dx.doi.org/10.1364/oe.20.008055.

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7

Shi, Hui Cheng, Nai Kui Gao, Hai Yun Jin, and Chuan Bin Wang. "Preparation and Dielectric Properties of Alumina Filled Epoxy Nano-Composite." Materials Science Forum 658 (July 2010): 463–66. http://dx.doi.org/10.4028/www.scientific.net/msf.658.463.

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The reported enhancement in dielectric properties obtained for polymer nano-composite seemed to be very encouraging. To further understand the dielectric behavior of epoxy nano-composite, aluminum oxide (Al2O3) nano-particles were incorporated into bisphenol A epoxy resin, and the dependence of nano-particle content and the dielectric properties was investigated in this study. Results showed that, when nano-particle contents was no more than 10phr, relative permittivity (εr) decreased to be lower than that of monolithic epoxy, and the minimum value appeared in 4phr nano-particle filled composite. The minimum value of tan delta (tanδ) appeared in 6phr nano-particle filled composite. DC volume resistivity (ρv) increased due to the introduction of nano-particles when the filler content is very small (about 2phr).
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8

El-Hilo, M. "Nano-particle magnetism with a dispersion of particle sizes." Journal of Applied Physics 112, no. 10 (November 15, 2012): 103915. http://dx.doi.org/10.1063/1.4766817.

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9

Mulyono, M. N. Putri, and T. Hidayat. "Effectiveness of Cattle Bone Ash Nano Particle as a Source of P to Replace SP 36 Fertilizer in Sweet Corn Cultivation in Entisol soil." IOP Conference Series: Earth and Environmental Science 985, no. 1 (February 1, 2022): 012055. http://dx.doi.org/10.1088/1755-1315/985/1/012055.

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Abstract The aim of the research is to study effectiveness of nano particle of cow bone ash to substitute SP36 synthetic fertilizer on cultivation of maize (Zea mays Saccharata Sturt) in entisol soil. The method used in this research was completely randomized block design with single factor of 5 treatments. The treatments were 100% of SP36 & 0% nanoparticle as control, 75 % of SP36 & 25 % of nano particle of cow bone ash, 50 % of SP36 & 50 % of nano particle of cow bone ash, 25 % of SP36 & 75 % of nano particle of cow bone ash. and 0 % of SP36 & 100 % of nano particle of cow bone ash. Parameters used in this study were the growth and yield of sweet corn. The results revealed that application of nano particle of cow bone ash could substitute synthetic fertilizer of SP-36 in the range of 25 to 100 % of growth and yield of maize. The application of treatment 25 % of SP36 & 75 % of nano particle of cow bone ash could increase cob weight of maize about 24 ton per ha or could increase the yield about 35 % compared to 100% SP36.
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10

Wang, Wen Jian, Hong Zhuo, Jun Guo, and Qi Yue Liu. "Study on Friction and Wear Behavior of GCr15/1045 Steel under Nano-Particle Additive Conditions." Advanced Materials Research 189-193 (February 2011): 38–41. http://dx.doi.org/10.4028/www.scientific.net/amr.189-193.38.

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The aim of this study was to investigate the friction and wear behavior of GCr15/1045 steel under different nano-particle additive conditions using a reciprocating horizontal tribometer. The results indicate that the nano-particle additives could decrease friction coefficient of CGr15/1045 steel and reduce the wear of material compared with the dry condition. Nano-particles play an important role of polishing the micro-gibbosity of contact surfaces during the friction process. The nano-particles of Ca10(PO4)6, TiO2 and TiN can form the self-repairing film on the worn surface of 1045 steel. The analysis indicates that the self-repairing effect of nano-particle of TiN is best and the self-repairing effect of nano-particle of TiO2 is worst.
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11

Haider, Sajjad, Adnan Saeed Butt, Imran Syed Muhammad, Asif Ali, Yun-Zhang Li, Syed Muhammad Ali Naqvi, and Muhammad Adnan Qaiser. "Impact of nano-particles shapes on Al2O3-water nano-fluid flow due to a stretching cylinder." International Journal of Numerical Methods for Heat & Fluid Flow 30, no. 5 (August 19, 2019): 2809–32. http://dx.doi.org/10.1108/hff-02-2019-0113.

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Purpose The purpose of this study is to theoretically probe the shape impacts of nano-particle on boundary layer flow of nano-fluid toward a stretching cylinder with heat-transmission effects. The base fluid used for this study is pure water, and aluminum oxide nano-particles are suspended in it. Four different shapes of nano-particle, namely, cylindrical, brick, platelets and blades, are considered to carry out the study. Design/methodology/approach The problem is modelled mathematically and the nonlinear system of equations is attained by using appropriate transmutations. The solution of transmuted equations is achieved by utilizing a shooting technique with Fourth-Fifth order Runge–Kutta Fehlberg scheme. Numerically attained results are elucidated through graphs and tables which are further compared under limiting cases with existing literature to check the validity of the results. Findings It is observed that fluid velocity and temperature of cylindrical shaped water nano-fluids are more than the nano-fluid having brick-shaped nano-particles. Moreover, it is seen that the nano-fluids suspended with platelets-shaped nano-particles have higher velocity and temperature than the nano-fluids containing blade-shaped nano-particles. The curvature parameter and nano-particles volume fraction have increasing effects on flow velocity and temperature of nano-fluids containing all types of nano-particle shapes. Originality/value Numerous authors have examined the impacts of nano-particle shapes on characteristics of heat transfer and fluid flow. However, to the best of the authors’ knowledge, the shape impacts of nano-particles on boundary layer flow of nano-fluid toward a stretching cylinder with heat-transmission effects have not been discussed. So, to fulfill this gap, the present paper explicates the impacts of various nano-particle shapes on Al2O3–water-based nano-fluid flow past a stretching cylinder with heat-transfer effects.
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12

Selmke, Markus, Marco Braun, and Frank Cichos. "Nano-lens diffraction around a single heated nano particle: errata." Optics Express 21, no. 21 (October 16, 2013): 25344. http://dx.doi.org/10.1364/oe.21.025344.

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13

Yang, Hua, Shi Yun Dong, and Bin Shi Xu. "Microstructure and Properties of Brush Electroplated Nano-SiC-Al2O3/Ni Composite Coating." Key Engineering Materials 373-374 (March 2008): 285–88. http://dx.doi.org/10.4028/www.scientific.net/kem.373-374.285.

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This paper investigated the effect of nano-SiC particle on microstructure and properties of brush electroplated nano-Al2O3/Ni composite coating. Three kinds of coatings, such as pure nickel coating, nano-Al2O3/Ni composite coating and nano-SiC-Al2O3/Ni composite coating, were fabricated on 1045 steel substrate. Before deposited, Zeta potential of nano-particles in the solution was examined. The results show Zeta potential of the nanoparticles in the nano-Al2O3/Ni electrolyte is negative, but that of the nanoparticles in nano-SiC-Al2O3/Ni electrolyte is positive when the pH value of electrolyte is about 7.5. Energy dispersive spectroscopy (EDS) results show Al element content in the nano-Al2O3/Ni coating is 5.65%, while the content of Al and Si elements in nano-SiC-Al2O3/Ni coating is 5.63% and 4.86% respectively. It confirms that nano-SiC particle co-deposited in the composite coating while nano-Al2O3 particle content keeps constant. The microhardness of nano-SiC-Al2O3/Ni coating exhibits the highest, while the pure nickel coating is the lowest. And surface morphology of nano-SiC-Al2O3/Ni coating is the most smooth and compact among the three coatings. The wear test results reveal that wear resistance of nano-SiC-Al2O3/Ni coating is 1.7 times of that of nano-Al2O3/Ni coating, and 2.3 times of that of pure nickel coating. The above results show the nano-SiC particle services a strengthening effect on the combination performance of nano-SiC-Al2O3/Ni coating.
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14

HASEGAWA, HIDEYUKI. "Nano-Particle Imaging for Magnetic Hyperthermia." Thermal Medicine 37, no. 3 (September 15, 2021): 106–7. http://dx.doi.org/10.3191/thermalmed.37.106.

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15

Robinson, A., P. Southern, and W. Schwarzacher. "Magnetic relaxation in nano-particle stacks." Journal of Physics: Conference Series 17 (January 1, 2005): 16–19. http://dx.doi.org/10.1088/1742-6596/17/1/003.

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16

Mora-Fonz, M. J., S. Hamad, and C. R. A. Catlow. "Modelling nucleation and nano-particle structures." Molecular Physics 105, no. 2-3 (January 20, 2007): 177–87. http://dx.doi.org/10.1080/00268970701211626.

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17

Vierrether, Olivia, Jessica TerBush, and Clarissa Wisner. "Nano-Particle TEM Sample Preparation Primer." Microscopy and Microanalysis 22, S3 (July 2016): 1914–15. http://dx.doi.org/10.1017/s1431927616010412.

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18

Jensen, H., and G. Sorensen. "Ion bombardment of nano-particle coatings." Surface and Coatings Technology 84, no. 1-3 (October 1996): 500–505. http://dx.doi.org/10.1016/s0257-8972(95)02820-x.

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19

Kuijpers, C. J., H. P. Huinink, N. Tomozeiu, S. J. F. Erich, and O. C. G. Adan. "Nano-particle dynamics during capillary suction." Journal of Colloid and Interface Science 521 (July 2018): 69–80. http://dx.doi.org/10.1016/j.jcis.2018.03.023.

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20

Kondratyev, V. N. "Dynamics of magnetic nano-particle assembly." Journal of Physics: Conference Series 248 (November 1, 2010): 012027. http://dx.doi.org/10.1088/1742-6596/248/1/012027.

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21

Tang, Shi Ying, Xiao Xin Liu, Ying Rui Lin, and Chao Wen. "The Effect of Nano-Graphite Particle to the Friction and Wear Performance of Al-Mg Matrix Composite Material." Applied Mechanics and Materials 189 (July 2012): 197–200. http://dx.doi.org/10.4028/www.scientific.net/amm.189.197.

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In this paper, with the combination of powder metallurgy and hot pressing method, the nano-graphite Al-Mg composite material was made. This method succeeds in solving the difficulty that graphite particle directly melted with Al-Mg melt, which investigates the amount of nano-graphite’s impact on the abrasion resistance of Al-Mg composite material. The result shows that nano-graphite particle easily to scattered in the matrix when the nano-graphite particle amounts to 1﹪ which can decrease the friction coefficient of composite material. But the material of wear extent increases accordingly along with the increase of the content of nano-graphite.
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22

Wang, Lin, Jia Xiang Zhong, Bin Ma, and Shu Jun Wang. "Optical Scattering Mechanisms of Functional Nano-Material Films on Transmission Display Screen." Key Engineering Materials 368-372 (February 2008): 348–51. http://dx.doi.org/10.4028/www.scientific.net/kem.368-372.348.

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In this paper, the application of new functional nano-material films prayed on transmission display screen is studied. Optical properties, such as luminance gain and scattering angle, of the screens are measured to investigate the particle size effects on the properties. The results show that the optical properties of screen sprayed with nano-material film improve notably compared with those screens with films of conventional particle sizes. When the particle size is less than 100nm, the gain is high and the viewing angle low. With increasing particle sizes, the characteristics of screens vary with particle sizes. In order to solve the contradictory relationship between gain and viewing angle and to obtain screens with desirable optical properties, suitable nano-particle sizes ranging from 400nm to 700nm should be chosen for the spraying film. The scattering mechanisms between nano-particles and light are also discussed.
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23

Zhang, Peng, Qingfu Li, Juan Wang, Yan Shi, Yuanxun Zheng, and Yifeng Ling. "Effect of Nano-Particle on Durability of Polyvinyl Alcohol Fiber Reinforced Cementitious Composite." Science of Advanced Materials 12, no. 2 (February 1, 2020): 249–62. http://dx.doi.org/10.1166/sam.2020.3680.

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In this study, the influence of nano-particle on flowability and durability of polyvinyl alcohol (PVA) fibers reinforced cementitious composite containing fly ash was evaluated. In the cementitious composite, Portland cement was replaced with 1.0%, 1.5%, 2.0% and 2.5% (by weight) of nano-particles. Two kinds of nano-particle of SiO2 and CaCO3 nano-particles were adopted in this study. PVA fibers were incorporated to the composite at a dosage of 0.9% (by volume). The flowability of the fresh cementitious composite was assessed using slump flow measurements. The durability of hardened cementitious composite includes carbonation resistance, permeability resistance, cracking resistance as well as freezing-thawing resistance, which were evaluated by the depth of carbonation, the water permeability height, cracking resistance ratio of the specimens, and relative dynamic elastic modulus of samples after freeze-thaw cycles, respectively. Our results showed incorporation of nano-particles had a little disadvantageous effect on flowability of PVA fiber reinforced cementitious composite, and the flowability of the fresh mixtures decreased with increases in the nano-particles content. The decrease in flowability of cementitious composite resulted by nano-SiO2 particles is more remarkable than nano-CaCO3 particles. The addition of both nano-SiO2 and nano-CaCO3 particles significantly improved the durability of PVA fiber reinforced cementitious composite. However, the improvement of nano-SiO2 on durability is much better than that of nano-CaCO3. When the amount of SiO2 nano-particle was less than 2.5%, the durability of cementitious composites increased with nano-SiO2 content. The microstructure of PVA fiber reinforced cementitious composite becomes much denser due to filler effect of nano-particle and generation of particles of hydrated products C–S–H gels. Both of SiO2 and CaCO3 nano-particle improved the microstructure of PVA fiber reinforced cementitious composite, and nano-SiO2 particles might be more beneficial for PVA fibers to play the role of reinforcement than nano-CaCO3 particles in the composites.
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24

Yang, X. N., and F. Y. Cui. "Stability of nano-sized titanium dioxide in an aqueous environment: effects of pH, dissolved organic matter and divalent cations." Water Science and Technology 68, no. 2 (July 1, 2013): 276–82. http://dx.doi.org/10.2166/wst.2013.165.

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Nano-sized titanium dioxide in the aquatic environment has a potential impact on the environment and human health. In this study, the impact of pH value, dissolved organic matter (DOM) and divalent cations (Ca2+) on the stability of titanium dioxide nanoparticles (nano-TiO2) in an aqueous environment was investigated in batch tests. The results showed that the particle size of nano-TiO2 was not sensitive to pH value but was inversely proportional to zeta potential. The nano-TiO2 becomes more stable with surface zeta potential, accompanied by small particle size and high dispersion. In the presence of DOM, the particle size was smaller and the stability of nano-TiO2 could be enhanced. This might be a synergistic effect of the ligand exchange and electrostatic force. Particle size increased with the addition of Ca2+ and the stability decreased.
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25

Guo, Dong Ming, Rui Hong Liu, Ren Ke Kang, and Zhu Ji Jin. "Study on Adhesion Removal Model in CMP SiO2 ILD." Key Engineering Materials 389-390 (September 2008): 475–80. http://dx.doi.org/10.4028/www.scientific.net/kem.389-390.475.

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In the process of CMP SiO2 ILD, the nano-particle with high surface energy in slurry has an essential impact on the efficiency and quality of CMP. In this paper the mode of nano-particle on the surface of SiO2 ILD is analysed and adhesion removal model corresponding to that is established. Through cycle polishing experiments, the change of nano-particle size and the state of particle surface before and after polishing is observed with TEM and Zeta potential analyzer, based on which the adhesion removal model is verified.
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26

Chen, Bing, and Yu Guang Fan. "Study on the Preparation of Fe3O4 Nano-Magnetic Fluid for Seal." Advanced Materials Research 139-141 (October 2010): 34–38. http://dx.doi.org/10.4028/www.scientific.net/amr.139-141.34.

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Water-based Fe3O4 nano-magnetic fluid for seal was prepared by coprecipitation. In order to obtain nano-magnetic fluid preparation technology which can produce industrially, the choice of second coating surfactant has been studied. Factors affecting nano-particle size and particle saturation magnetization were investigated using five factors and three level orthogonal experimental design. The size of nano-particles and particle saturation magnetization were characterized by transmission electron microscopy (TEM) and WSM vibration magnetometer. The results showed that the adding speed of NaOH solution and heat-maintaining time after adding, adding speed and reaction temperature of sodium oleate solution, as well as the heating temperature of sodium oleate solution influence the properties of nano-magnetic particles more. With the optimum process parameters, Fe3O4 nano-magnetic fluid which is below 15nm and can meet the nano-magnetic fluid sealing technology requirements has been prepared.
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27

Li, Zheng Min, Zhi Wei Chen, Min Tan, Ke Jing Xu, and Bing Jiang. "Determination of Particle Size Distribution of Nano-TiO2 Coating Film by AFM and Image Analysis." Advanced Materials Research 177 (December 2010): 22–24. http://dx.doi.org/10.4028/www.scientific.net/amr.177.22.

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Nano-TiO2 coating film is one of the efficient photocatalysts. The particle size distribution of TiO2 has important influence on photocatalytic activity. A new method to determine the particle size distribution of TiO2 nano-film coated on ceramic was developed, by which the images of film acquired by Atom force microscope (AFM) were processed, and TiO2 particles contacted with others were separated and detected. The particle size distributions of two TiO2 nano-films were determined.
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28

ZHANG, Jinwei, Weite YANG, Yonghan WEN, Hongbin SUN, Guojun ZHU, and Wuyong CHEN. "Interaction between Gelatin and Nano-Silver Particle: Foundation for Nano-Silver in Antibacterial Leather." Leather and Footwear Journal 21, no. 1 (March 31, 2021): 35–46. http://dx.doi.org/10.24264/lfj.21.1.4.

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In order to explain the interaction between collagen and nano-silver, gelatin solution was blended with nano-silver particles (AgNPs) with particle size 26 mm, and then the mixture was interacted under different time, pH and temperature. The changes in the process were measured by UV-Vis, fluorescence spectroscopy, dynamic light scattering and FT-IR. The results showed that the main type of reaction between gelatin and AgNPs was electrostatic interaction and the interaction was diffusive encounters. The particle size and distribution of nano-silver would not be affected by gelatin, however, there was dynamic fluorescence quenching of gelatin after nano-silver particle induced. The longer time and lower pH were beneficial for the interaction process while the interaction balanced after 60 min and pH 3.0 resulted in the most drastic interaction. Moreover, nano-silver would not impair gelatin structure during the interaction process. In short, the results in this work might be a foundation and reference for applying nano-silver in antibacterial leather producing.
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29

Moffat, J. Ross, Khellil Sefiane, and Martin E. R. Shanahan. "Nanofluid Droplet Evaporation Kinetics and Wetting Dynamics on Flat Substrates." Journal of Nano Research 7 (July 2009): 75–80. http://dx.doi.org/10.4028/www.scientific.net/jnanor.7.75.

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An experimental investigation into the evaporation of sessile nanofluid droplets is reported in this paper. The effect of nano-particle addition on the evaporative behaviour is studied using ethanol and Titanium Oxide nano-particles. The results show that a distinct ‘stick-slip’ pinning behaviour is observed when nano-particles are added to the base liquid. Increasing the nano-particle concentration was found to enhance the ‘stick-slip’ behaviour. This behaviour is attributed to the effects of evaporatively driven particle accumulation near the contact line. This in turn leads to an increase in localised viscosity, and an enhancement of contact line pinning.
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30

Ravendran, N., and P. M. Chou. "Effect of voltage and anodizing time on nano colloidal silver." Journal of Physics: Conference Series 2120, no. 1 (December 1, 2021): 012018. http://dx.doi.org/10.1088/1742-6596/2120/1/012018.

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Abstract The objective of the present study was to investigate the effect of voltage and anodizing time on the average particle size of nano colloidal silver. The results of the zeta sizer analysis showed that the average particle size of the nano colloidal silver increased with increasing the voltage. On the other hand, anodizing time did not show a specific effect on the average particle size of the nano colloidal silver. The results also show that the samples prepared at 20 V with anodizing time of 2 hours exhibits an average particle size of less than 100 nm, which is potential to be used as disinfectant spray. Also, it shows that electrolysis is a suitable method to produce nano colloidal silver.
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31

Tian, Guoyu, Xiuhong Zhong, Xuehai Wu, and Zhaojiang Wang. "Self-Assembly Preparation of Nano-Lignin/Cationic Polyacrylamide Complexes." Polymers 13, no. 11 (May 25, 2021): 1726. http://dx.doi.org/10.3390/polym13111726.

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The present work describes the preparation of nano-lignin particles from calcium lignosulfonate (CL). The nano-lignin was fabricated from colloidal lignin–polyacrylamide complexes via self-assembly. The sizes of the nano-lignin particles were examined by dynamic light scattering (DLS) and scanning electron microscopy (SEM). The results indicated that the average particle size of the prepared nano-lignin was approximately 100 nm. In addition, the obtained nano-lignin exhibited enhanced fluorescence intensity when compared with the original lignin, which might represent a potential application of this nano-particle product.
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32

Qing Li, Qing Li, He Huang He Huang, Feng Lin Feng Lin, and Xingkun Wu Xingkun Wu. "Real-time measurement of nano-particle size using differential optical phase detection." Chinese Optics Letters 15, no. 12 (2017): 120602. http://dx.doi.org/10.3788/col201715.120602.

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33

Lewis, T. John. "Nano-Composite Dielectrics: The Dielectric Nature of the Nano-Particle Environment." IEEJ Transactions on Fundamentals and Materials 126, no. 11 (2006): 1020–30. http://dx.doi.org/10.1541/ieejfms.126.1020.

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34

Guisbiers, Grégory, Subarna Khanal, Francisco Ruiz-Zepeda, Jorge Roque de la Puente, and Miguel José-Yacaman. "Cu–Ni nano-alloy: mixed, core–shell or Janus nano-particle?" Nanoscale 6, no. 24 (2014): 14630–35. http://dx.doi.org/10.1039/c4nr05739b.

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Bimetallic nanoparticles like Cu–Ni are particularly attractive due to their magnetic and catalytic properties; however, their properties depend strongly on the structure of the alloy i.e. mixed, core–shell or Janus.
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35

Wang, Buxuan, Chunhui Li, and Xiaofeng Peng. "Adsorption of nano-particles on bubble surface in nano-particle suspension." China Particuology 3, no. 4 (August 2005): 208–12. http://dx.doi.org/10.1016/s1672-2515(07)60188-2.

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36

Okada, T., B. H. Agung, and Y. Nakata. "ZnO nano-rods synthesized by nano-particle-assisted pulsed-laser deposition." Applied Physics A 79, no. 4-6 (September 2004): 1417–19. http://dx.doi.org/10.1007/s00339-004-2797-5.

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37

Li, Hongxing, Xinru Song, Xing Yu, Jianhua Zhang, Zixiang Cui, Yongqiang Xue, and Rong Zhang. "Preparation of nano-t-Se with different particle sizes and particle size dependence of the melting thermodynamics." CrystEngComm 21, no. 37 (2019): 5650–57. http://dx.doi.org/10.1039/c9ce00953a.

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38

Yao, Zhen, Songbai Xue, Jinlong Yang, and Junxiong Zhang. "Inducing the Effect of a Ga2O3 Nano-Particle on the CsF-RbF-AlF3 Flux for Brazing Aluminum to Carbon Steels." Crystals 10, no. 3 (March 7, 2020): 183. http://dx.doi.org/10.3390/cryst10030183.

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In this study, a Ga2O3 nano-particle was added into CsF-RbF-AlF3 flux to develop a highly active flux for brazing aluminum alloy to steel, and the spreadability and wettability of Zn-Al filler metal that matched the CsF-RbF-AlF3 flux-doped Ga2O3 nano-particle on the steel were investigated. The results showed that the spreadability and wettability of the CsF-RbF-AlF3 flux-doped Ga2O3 nano-particle could be remarkably improved when matching Zn-Al filler metals on both aluminum and low-carbon steel, for which the optimal content is in the range of 0.001–0.003 wt.% of Ga2O3. An investigation and analysis on the mechanism of reactions among CsF-RbF-AlF3-doped Ga2O3 nano-particle flux and filler metal or base metals showed that the Ga2O3 nano-particle is selectively absorbed by the interface of molten Zn-2Al filler metal and base metal, which released the surface-active element Ga to enrich the molten Zn-2Al filler metal and decreased the interfacial tension, so as to promote the enlargement of its spreading area during the brazing process. It was concluded that adding a trace amount of Ga2O3 nano-particle into CsF-RbF-AlF3 flux is a meaningful way to improve the activity of flux for brazing aluminum to steel compared with adding ZnCl2, which poses the risk of corrosion on aluminum.
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39

Chou, Chen Chia, Chun Feng Huang, and Min Jen Chen. "Fabrication and Characterization of Solid Oxide Fuel Cell Anode with Impregnated Catalytic Ni-CeO2 Nano-Particles on 8YSZ Fibers." Advanced Materials Research 287-290 (July 2011): 2485–88. http://dx.doi.org/10.4028/www.scientific.net/amr.287-290.2485.

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Development of a solid oxide fuel cell anode by impregnating catalytic Ni and Ni-CeO2 nano-particles on 8YSZ fiber structure was carried out in this work. The nano-scale 8YSZ fibers were successfully fabricated by the electrospinning process and were well matched with the 8YSZ electrolyte. The experimental results demonstrated that the Ni/8YSZ anode with nano-8YSZ fibers, which impregnated with 3M nickel nitrate, decreases the polarization resistance and increases the exchange current density. However, the lowest polarization resistance and the highest exchange current density are observed in Ni/8YSZ fibers anode by adding nano-ceria particle from 5 wt.% to 10 wt.%. It is attributed to that the grain growth of Ni particle has been constrained by modifying appropriate amount of ceria particle to reduce the obstruction of diffusion path of fuel gas and to enhance the amount of triple phase boundary (TPB). On the other hand, 8YSZ nano-fibers provide a stabilized porous structure of the anode. Accordingly, nano-CeO2 particle provides storing and releasing of oxygen ion to improve the catalytic performance of nano-Ni modified 8YSZ fiber anode
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40

Alireza Naji Givi, Suraya Abdul Rashid, Farah Nora A. Aziz, and Mohamad Amran Mohd Salleh. "Particle size effect on the permeability properties of nano-SiO2 blended Portland cement concrete." Journal of Composite Materials 45, no. 11 (November 8, 2010): 1173–80. http://dx.doi.org/10.1177/0021998310378908.

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In this study, nano-SiO2 has been used as a high reactive pozzolan to develop the microstructure of the interfacial transition zone between the cement paste and the aggregate. Mechanical tests of blended cement-based concretes exposed that in addition of the pozzolanic reactivity of nano-SiO2 (chemical aspect), its particle grading (physical aspect) also revealed considerable influences on the blending effectiveness. It was concluded that the relative permeability reduction (relative to the control concrete made with plain cement) is higher for coarser nano-SiO2 after 90 days of moisture curing. However, finer nano-SiO2 particles showed better effects in early ages. These phenomena can be due to the free spacing between mixture particles that was associated with the global permeability of the blended cement-based concretes. This article presents the results of the effects of particle size ranges involved in nano-SiO2 blended Portland cement on the water permeability of concrete. It is revealed that the favorable results for coarser nano-SiO2 reflect enhanced particle packing formation accompanied by a reduction in porosity and particularly in particle spacing after 90 days.
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41

Bakhtiari, Maria Naz, Najam ul Hassan, Rashida Parveen, and Gul Shahnaz. "Nanoparticles Induced Oxidative Stress: A Review Based Approach." Global Drug Design & Development Review VI, no. IV (December 30, 2021): 57–66. http://dx.doi.org/10.31703/gdddr.2021(vi-iv).05.

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Nanotechnology, a rapidly evolving science, has generated game-changing breakthroughs in the industrial, medical, and consumer industries. Engineered nano particles (NP) are extremely attractive in a range of applications due to their unique physio chemical and electrical characteristics. Changes in Np's structural and physio chemical properties can alter their biologically active compounds, along with the generation of free radicals (ROS), one of the most widely documented Nano particle-related toxins. Cellular parameters such as surface of the particle, size, contents of composition, and metal content produce oxidative stress, whereas cellular responses such as mitochondrial functions, Nano materials cell contact, and immune cell activation cause ROS-mediated destruction. It's crucial to understand how NP influences the ROS response although the oxidative stress is a key predictor of Nano particle induced damage. It may be possible to develop a comprehensive toxicity screen that uses oxidative stress as a prediction model for nano particle damage, as well as a better understanding of the multiple signalling cascades activated by nano materials ROS.
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42

Yoon, Seok-Hwang, Sanjeev Kumar, Gil-Ho Kim, Young-Suk Choi, T. W. Kim, and Saiful I. Khondaker. "Dielectrophoretic Assembly of Single Gold Nanoparticle into Nanogap Electrodes." Journal of Nanoscience and Nanotechnology 8, no. 7 (July 1, 2008): 3427–33. http://dx.doi.org/10.1166/jnn.2008.129.

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We report the optimization study of assembling single 20 nm gold nano-particle in 20 nm spaced electrode gap via ac dielectrophoresis (DEP) technique. It was observed that time, voltage, and frequency variations influenced significantly the assembly of gold nano-particle in the nano-gap electrodes. Frequency variation study revealed that at lower frequencies (<1 MHz) the assembling was observed in low field regions; however, at a moderate frequency of 1 MHz, minimum number of nano-particles was assembled in high field region. Trapping of single 20 nm nano-particle in 20 nm spaced electrodes was successfully achieved under the optimized DEP parameters i.e., frequency, applied voltage and time of values corresponding to 1 MHz, 2 V, and 1 sec, respectively, with the yield of almost 66%. Our results show the promise of optimized dielectrophoresis in the future nano-engineering.
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43

Alavi, Fatemeh, and Ali Ashrafi. "Mechanical Properties of Glass–Fiber Polyester Reinforced Composites Filled with Nanometer Al2O3 Particles." Advanced Materials Research 586 (November 2012): 199–205. http://dx.doi.org/10.4028/www.scientific.net/amr.586.199.

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In this research the effects of the nano-particle additions and two different fabric architectures of knitted E-glass fibers on the mechanical properties of polyester fiberglass composites were investigated. The particles selected was 50 nanometer in size Al2O3 particles. E-glass fibers were knitted using two different molds by two different arrangements. Specimens were machined and mechanical tests were conducted as per the accepted test standard. Tension, impact and fracture properties were measured and their associated failure modes were compared with each other. Fracture behavior of specimens with and without nano-particle addition in unidirectional tensile test was studied using Scanning Electron Microscopy (SEM). Results obtained showed that tensile strength of the composite is significantly dependent on nano-particle addition and E-glass fiber architecture. Addition of 0.2 weight percent nano-particles enhances the tensile properties of polyester fiberglass composites. It was found that fracture behavior of composite depends strongly on nano-particle addition.
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44

Prakash, E., and K. Sivakumar. "Experimental Analysis of Damping and Tribological Characteristics of Nano-CuO Particle Mixed Lubricant in Ball Bearings." International Journal of Nanoscience 14, no. 03 (May 19, 2015): 1450026. http://dx.doi.org/10.1142/s0219581x14500264.

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Experimental analysis of damping capacity and tribological characteristics of nano CuO added Servosystem 68 lubricant is attempted. CuO nano particles were synthesized by aqueous precipitation method and characterized. Prior to dispersion into lubricant, CuO nano particles were coated with 0.2 wt.% surfactant (Span-80) to stabilize the nano fluid. Tribological characteristics of particle added lubricant were tested in ASTM D 4172 four ball wear tester. Scanning electron microscopy test results of worn surfaces of nano CuO particle added lubricant were smoother than base lubricant. The particle added lubricant was applied in a new ball bearing and three defected ball bearings. When particle added lubricant was used, the ball defected bearing's vibration amplitude was reduced by 21.94% whereas it was 16.46% for new bearing and was ≤ 11% for other defected bearings. The formation of protection film of CuO over ball surface and regime of full film lubrication near the ball zone were observed to be reason for improved damping of vibrations.
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45

Qiu, Ji, Xiang Bo Suo, Shi Ning Ma, Gang Shuai, and Hong Mei Wang. "A Effects of Nano-Particles Additives on Wear Performance of Micro-Arc Oxidation Coating Prepared on 2A12 Aluminum Alloy." Advanced Materials Research 1120-1121 (July 2015): 735–39. http://dx.doi.org/10.4028/www.scientific.net/amr.1120-1121.735.

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Nano-particle reinforced composite coatings were prepared on 2A12 aluminum alloy by micro-arc oxidation and the effect of nano particles on wear performance of coating was studied. By means of SEM, CETR micro-nano-indenter friction and wear tester and white-light interferometer, the surface morphology and the friction and wear property were tested. Results showed that compared with the coating without nano-particle addition, the size and amount of pores on coatings were decreased substantially after additon with 20nm nano-SiO2 particles, 80nm nano-SiO2 particles and 80nm nano-TiO2 particles, and the wear resistance of the micro-arc oxidation coating was improved.
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Larpkiattaworn, Siriporn, Wasana Khongwong, Siriporn Tong-On, Chutima Eamchotchawalit, and Chaiwat Vorapeboonpong. "Dispersion Stability of Drinking Water Treatment Sludge." Key Engineering Materials 659 (August 2015): 69–73. http://dx.doi.org/10.4028/www.scientific.net/kem.659.69.

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The objective of this study is to improve the particle suspension stability of drinking water treatment sludge (DWTS) and comparable to other silicate powder which are bentonite, micro silica (micro-SiO2), and nano-silica (nano-SiO2). The main dispersion characteristic are related to particle size, and dispersion force. The representative samples of bentonite, micro-SiO2, nano-SiO2, and DWTS were dispersed at the same solid content in water. The particle size distribution and chemical composition of samples were analyzed. The suspended samples were measured for Zeta potential at the controlled pH value. Furthermore, turbidity of suspended samples were investigated at various sedimenting time. The results indicated that nano-SiO2 has the highest Zeta potential value at pH 8-12. The stability of particle dispersion could be implied from turbidity of suspension at various sedimenting time. Bentonite suspension performed more stability than other samples for longer time. However, stability of DWTS particles can be improved by particle size controlling and treatment with dispersion agent to create repulsive force from the charge on the particle surface.
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47

Chaurasia, S., D. S. Munda, P. Ayyub, N. Kulkarni, N. K. Gupta, and L. J. Dhareshwar. "Laser plasma interaction in copper nano-particle targets." Laser and Particle Beams 26, no. 3 (July 29, 2008): 473–78. http://dx.doi.org/10.1017/s0263034608000487.

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AbstractIn this paper, we present the results of studies on ion emission characteristics of a laser plasma produced from a copper nano-particle layer of 1–3 µm thickness coated over polished surface of a solid copper target. Laser intensity of 1013–1014 W/cm2 was produced on the targets by a 2 J Nd:glass laser having a variable pulse duration of 300–800 ps. Nano-particle size was in the range of 15–25 nm. Ion emission from the nano-particle plasma was compared with plasma generated from a polished copper target. Ion emission from the nano-structured target was observed to depend on the polarization of the incident laser beam. This effect was stronger for a shorter laser pulse. X-ray emission was measured in the soft and hard X-ray region (0.7 to 8 keV) using various X-ray filters. A nano-particle coated target is found to yield a larger flux as well as velocity of ions as compared to polished target when the laser polarization is parallel to the plane containing target normal and detector axis. However, no X-ray enhancement has been observed in the wavelength range 1.5 to 20 Å.
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48

Asif, Shahrukh, Sidra Altaf, and Asma Kaleem. "Nanoparticles Targeted Drug Delivery in Lung Cancer." Global Drug Design & Development Review VI, no. IV (December 30, 2021): 39–56. http://dx.doi.org/10.31703/gdddr.2021(vi-iv).04.

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Lung cancer is one of the top most leading cancers in the world. Nano-scale size dependent properties of the nano particles revolutionized the targeted therapy for the lung cancer. Nasal drug delivery of the nano particle aid in enhancing the effect at targeted site. Vascularization, large surfaced area and rapid disposition of drug nano particles is encouraging toward the inhalable drug delivery. The main purpose of the review is to gather the recent literature work in the area of nano particle uses in lung cancer and work on the development of targeted drug deliveryples.
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Engeroff, Paul, and Martin F. Bachmann. "The 5th virus-like particle and nano-particle vaccines (VLPNPV) conference." Expert Review of Vaccines 18, no. 1 (December 13, 2018): 1–3. http://dx.doi.org/10.1080/14760584.2019.1557522.

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50

Kim, Seong-Soo, R. Doug Hooton, Tae-Jun Cho, and Jeong-Bae Lee. "Comparison of innovative nano fly ash with conventional fly ash and nano-silica." Canadian Journal of Civil Engineering 41, no. 5 (May 2014): 396–402. http://dx.doi.org/10.1139/cjce-2012-0419.

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This report is an experimental study on the nano-powdering of fly ash and the improvement of cement performance by nano fly ash. Mortars with nano fly ash or nano-silica produced by a physical method are compared with mortar without a nano-binder. Mortar with nano-silica showed rapid setting. However, mortar with fly ash or nano fly ash exhibited delayed setting. The smaller the particle sizes, the higher is the compressive strength, demonstrating that mortar with nano fly ash shows superior performance with higher compressive strength from the beginning. Durability assessments revealed that chloride penetration resistance increased by 70% for mortar with nano fly ash or nano-silica. This shows that mortar with a smaller particle binder has excellent carbonation resistance. Nano-powdering effectively enhances the activation of a pozzolanic reaction and provides densely charged effects. These changes solve the problem of initial strength reduction — the greatest weakness of fly ash.
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