Production of a TiN film with nanoscale particle size by a combined method of plasma-alloy reaction and spray deposition

1992 ◽  
Vol 11 (12) ◽  
pp. 865-867 ◽  
Author(s):  
A. Inoue ◽  
B. G. Kim ◽  
K. Nosaki ◽  
T. Yamaguchi ◽  
T. Masumoto
Keyword(s):  
Particle Size ◽  
Spray Deposition ◽  
Combined Method ◽  
Nanoscale Particle ◽  
Tin Film ◽  
Nanoscale Particle Size

Facile synthesis, morphology and photoluminescence of a novel red fluoride nanophosphor K2NaAlF6:Mn4+

2017 ◽  
Vol 5 (26) ◽  
pp. 6420-6426 ◽  
Author(s):  
Yiwen Zhu ◽  
Luyu Cao ◽  
Mikhail G. Brik ◽  
Xuejie Zhang ◽  
Lin Huang ◽  
...  
Keyword(s):  
Particle Size ◽  
Cation Exchange ◽  
Facile Synthesis ◽  
Nanoscale Particle ◽  
Nanoscale Particle Size

A novel red-emitting fluoride phosphor, K2NaAlF6:Mn4+, with nanoscale particle size was synthesizedviaa cation exchange route.

scholarly journals The Effect of the Chorion on Size-Dependent Acute Toxicity and Underlying Mechanisms of Amine-Modified Silver Nanoparticles in Zebrafish Embryos

2020 ◽  
Vol 21 (8) ◽  
pp. 2864 ◽  
Author(s):  
Zi-Yu Chen ◽  
Nian-Jhen Li ◽  
Fong-Yu Cheng ◽  
Jian-Feng Hsueh ◽  
Chiao-Ching Huang ◽  
...  
Keyword(s):  
Particle Size ◽  
Silver Nanoparticles ◽  
Time Course ◽  
Zebrafish Embryo ◽  
Toxic Effects ◽  
Size Dependent ◽  
Underlying Mechanisms ◽  
Nanoscale Particle Size ◽  
Toxic Reactions

As the worldwide application of nanomaterials in commercial products increases every year, various nanoparticles from industry might present possible risks to aquatic systems and human health. Presently, there are many unknowns about the toxic effects of nanomaterials, especially because the unique physicochemical properties of nanomaterials affect functional and toxic reactions. In our research, we sought to identify the targets and mechanisms for the deleterious effects of two different sizes (~10 and ~50 nm) of amine-modified silver nanoparticles (AgNPs) in a zebrafish embryo model. Fluorescently labeled AgNPs were taken up into embryos via the chorion. The larger-sized AgNPs (LAS) were distributed throughout developing zebrafish tissues to a greater extent than small-sized AgNPs (SAS), which led to an enlarged chorion pore size. Time-course survivorship revealed dose- and particle size-responsive effects, and consequently triggered abnormal phenotypes. LAS exposure led to lysosomal activity changes and higher number of apoptotic cells distributed among the developmental organs of the zebrafish embryo. Overall, AgNPs of ~50 nm in diameter exhibited different behavior from the ~10-nm-diameter AgNPs. The specific toxic effects caused by these differences in nanoscale particle size may result from the different mechanisms, which remain to be further investigated in a follow-up study.

Study on the Mineral Processing of Cassiterite from Flotation Tailings by a Combined Method

2014 ◽  
Vol 968 ◽  
pp. 185-189 ◽  
Author(s):  
Yi Qiang Liang ◽  
Sheng Jian ◽  
Cong Jie Zhu ◽  
Ji Bo Qiao
Keyword(s):  
Particle Size ◽  
Size Range ◽  
Particle Size Analysis ◽  
Size Analysis ◽  
Test Results ◽  
Combined Method ◽  
Gravity Concentration ◽  
Complex Composition ◽  
Flotation Process ◽  
Flotation Behavior

A tailings assaying 0.4% Sn is taken from a flotation process which is used to recover Cu, Pb and Zn. The cassiterite in the tailings is of fine dissemination and complex composition, which leads to difficulties to recover by traditional gravity concentration. In order to enhance the recovery of Sn and make good use of the tailings, particle size analysis and chemical analysis were conducted. Test results show that different flotation index under different size range can be obtained, and the flotation behavior of different size range was investigated. As a result, a reasonable process of gravity concentration and flotation after classification is proposed, which can enhance the Sn recovery remarkably.

scholarly journals Assimilation of Zinc Metal Ion With Hydroxyapatite for Impedance Studies

2021 ◽  
Author(s):  
POOVENDRAN K ◽  
K.S. Joseph Wilson
Keyword(s):  
Electrical Conductivity ◽  
Particle Size ◽  
Dielectric Properties ◽  
Metal Ion ◽  
Chemical Precipitation ◽  
Precipitation Method ◽  
Wet Chemical ◽  
Particle Shapes ◽  
Wet Chemical Precipitation ◽  
Nanoscale Particle Size

Abstract The aim of the present work is to examine the doping outcome of Zn metal ions on hydroxyapatite for different concentrations (0.2, 0.4, 0.6, and 0.8). The samples for the pure and Zn doped HAp are synthesized by wet chemical precipitation method. The properties and the particle size are identified by using XRD. The functional bands of PO, CO and OH are analyzed through FTIR and the surface morphology and particle shapes are studied through SEM. The elemental analysis such as zinc, calcium and phosphates are analyzed by EDAX. All the designed elements are studied and confirm the (Ca+Zn)/PO ratio is nearly 1.67 and no other elements were identified in this study. The morphological particles of needle shape and the nanoscale particle size and shapes are studied by using TEM. The electrical conductivity of the synthesized ZnHAp ceramic is mainly related to width of the channel and the polarizability. The frequency dependence of the electric and dielectric properties was studied by using impedance spectroscopy.

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