Sintering Behavior and Electrical Property of Surface Treated Silver Nanoparticle for Electronic Application

2015 ◽  
Vol 645-646 ◽  
pp. 157-162 ◽  
Author(s):  
Hui Xie ◽  
Na Na Xiong ◽  
Yu Zhen Zhao ◽  
Yue Hui Wang
Keyword(s):  
Silver Nanoparticles ◽  
Electrical Property ◽  
Electrical Properties ◽  
Silver Nanoparticle ◽  
Large Scale ◽  
Sodium Citrate ◽  
Sintering Temperature ◽  
Ethanol Solution ◽  
Sintering Behavior ◽  
Conductive Adhesives

Large-scale silver nanoparticles with fine dispersion and narrow size distribution were synthesized by reducing silver nitrate with sodium borohydride and sodium citrate and using poly (vinylpyrrolidone) as an adsorption agent in the ethanol solution. The sintering behavior and electrical properties of silver nanoparticles treated with and without glutaric acid were studied. Morphology studies showed that the treated silver nanoparticles obviously agglomerated and began to sinter at 200 °C and the sintering temperature is higher at least 50 degrees than that of the untreated silver nanoparticles The treated silver nanoparticles as fillers of electronically conductive adhesives (ECAs) is more advantageous to the increase of the conductivity. Otherwise, only in the conditions of the appropriate sintering temperature and loading of silver nanoparticles, the high conductivity of the ECAs was obtained. The effect of the treated silver nanoparticles on the electrical properties contributes to the surface activation and sintering behavior.Keywords: Silver nanoparticle, Sintering Behavior, Surface treatment, Electrical property

Effects of Alkali Metal Content and Sintering Temperature on the Structure and Electrical Properties of (Na0.52K0.48) 0.94+xLi0.06-xNb0.94Sb0.06O3 Lead-Free Piezoelectric Ceramics

2013 ◽  
Vol 423-426 ◽  
pp. 459-462
Author(s):  
Hai Tao Li ◽  
Xiao Bo Hong ◽  
Hong Qiong Huang ◽  
Jin Feng Gong ◽  
Zhi Yuan Cheng ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Metal Content ◽  
Electromechanical Coupling ◽  
Piezoelectric Properties ◽  
Sintering Temperature ◽  
Piezoelectric Ceramics ◽  
Lead Free ◽  
Electromechanical Coupling Coefficient ◽  
Sintering Behavior ◽  
Orthorhombic Symmetry

Alkali niobate lead-free piezoelectric ceramics with nominal compositions [(Na0.52K0.48)0.94+ xLi0.06-x](Nb0.94Sb0.06)O3 ((NK)xLNS) were prepared by normal sintering. Crystalline phase, piezoelectric properties and sintering behavior of (NK)xLNS ceramics were investigated with a special emphasis on the influence of alkli metal content. The x-ray diffraction patterns and the corresponding calculation of lattice parameters indicated that a phase transition from tetragonal to orthorhombic symmetry occurs as x=0.01, resulting in enhanced piezoelectric constant and planar electromechanical coupling coefficient of 266 pC/N and 38.5%, respectively. With x=0.01, the ceramics sintered at 1050 C show higher density and better electrical properties. Our results indicate the importance of sintering temperature and elaborate compositional control for enhancing piezoelectric properties in niobate-based ceramics.

Effect of Dy3+ on the Microstructure and Electrical Properties of Ce0.8Sm0.2−xDyxO1.9 (0 ≤ x ≤ 0.15) Electrolytes for IT-SOFC

2011 ◽  
Vol 8 (6) ◽  
Author(s):  
K. Park ◽  
H. K. Hwang
Keyword(s):  
Electrical Property ◽  
Electrical Properties ◽  
Sintering Temperature ◽  
Combustion Method ◽  
Fluorite Structure ◽  
Solution Combustion ◽  
High Quality ◽  
Solution Combustion Method ◽  
Low Sintering Temperature

High-quality nanosized Ce0.8Sm0.2-xDyxO1.9 (0 ≤ x ≤ 0.15) powders were successfully synthesized by solution combustion method. Calcined Ce0.8Sm0.2−xDyxO1.9 (0 ≤ x ≤ 0.15) powders and sintered Ce0.8Sm0.2−xDyxO1.9 (0 ≤ x ≤ 0.15) pellets crystallized in the cubic fluorite structure. Dense and nanocrystalline Ce0.8Sm0.2−xDyxO1.9 electrolytes were fabricated, even at low sintering temperature (1300 °C). The microstructure and electrical property of the Ce0.8Sm0.2−xDyxO1.9 were discussed, depending on the Dy3+ content. The highest conductivity (0.053 S cm−1 at 800 °C) was obtained for Ce0.8Sm0.17Dy0.03O1.9.

scholarly journals Enhanced Silver Nanoparticle Synthesis by Escherichia Coli Transformed with Candida Albicans Metallothionein Gene

Materials ◽  
2019 ◽  
Vol 12 (24) ◽  
pp. 4180 ◽  
Author(s):  
Qunying Yuan ◽  
Manjula Bomma ◽  
Zhigang Xiao
Keyword(s):  
Escherichia Coli ◽  
Silver Nanoparticles ◽  
Candida Albicans ◽  
Silver Nanoparticle ◽  
Large Scale ◽  
Nanoparticle Synthesis ◽  
Scale Production ◽  
E Coli ◽  
Metallothionein Gene ◽  
Silver Nanoparticle Synthesis

In this study, the metallothionein gene of Candida albicans (C. albicans) was assembled by polymerase chain reaction (PCR), inserted into pUC19 vector, and further transformed into Escherichia coli (E. coli) DH5α cells. The capacity of these recombinant E. coli DH5α cells to synthesize silver nanoparticles was examined. Our results demonstrated that the expression of C. albicans metallothionein in E. coli promoted the bacterial tolerance to metal ions and increased yield of silver nanoparticle synthesis. The compositional and morphological analysis of the silver nanoparticles revealed that silver nanoparticles synthesized by the engineered E. coli cells are around 20 nm in size, and spherical in shape. Importantly, the silver nanoparticles produced by the engineered cells were more homogeneous in shape and size than those produced by bacteria lack of the C. albicans metallothionein. Our study provided preliminary information for further development of the engineered E. coli as a platform for large-scale production of uniform nanoparticles for various applications in nanotechnology.

scholarly journals Large-scale and facile synthesis of silver nanoparticles via a microwave method for a conductive pen

RSC Advances ◽  
2017 ◽  
Vol 7 (54) ◽  
pp. 34041-34048 ◽  
Author(s):  
Yaguo Cai ◽  
Xianqing Piao ◽  
Wei Gao ◽  
Zhejuan Zhang ◽  
Er Nie ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Silver Nanoparticles ◽  
Silver Nanoparticle ◽  
Large Scale ◽  
Microwave Treatment ◽  
Microwave Method ◽  
Facile Synthesis ◽  
Nanoparticle Production ◽  
Electronic Ink

A large-scale silver nanoparticle production by microwave treatment for the electronic ink. By drawing on the photo paper, the conductive tracks were realized without any heat treatment.

Detection of intracellular silver nanoparticles using flow cytometry

2018 ◽  
pp. 223-226
Author(s):  
С.И. Каба ◽  
А.А. Соколовская
Keyword(s):  
Flow Cytometry ◽  
Silver Nanoparticles ◽  
Endothelial Cells ◽  
Silver Nanoparticle ◽  
Cell Uptake ◽  
Control Samples

Продемонстрировано обнаружение наночастиц серебра во внутриклеточном пространстве с помощью проточной цитофлуориметрии. В эндотелиальных клетках линии EA.hy926, инкубированных в растворе, содержащем 2 мкг/мл наносеребра, измеряли боковое светорассеяние. По сравнению с контрольными образцами этот параметр возрастал, в то время как прочие значимые характеристики не изменялись. Это подтверждает чувствительность метода к изменившемуся состоянию клеток и указывает на поглощение наночастиц серебра клетками при концентрации ниже токсической. The study demonstrated a possibility for detection of intracellular silver nanoparticles using flow cytometry. The parameter used in this work, side scattering, was measured in EA.hy926 endothelial cells incubated in a 2 mg/ml silver nanoparticle solution. This parameter was increased compared to control samples. Therefore, this technique was sensitive to changes in the cell status and suggested the cell uptake of the particles under the subtoxic conditions.

scholarly journals A comparative study of silver nanoparticle dissolution under physiological conditions

2020 ◽  
Vol 2 (12) ◽  
pp. 5760-5768
Author(s):  
Lukas Steinmetz ◽  
Christoph Geers ◽  
Sandor Balog ◽  
Mathias Bonmarin ◽  
Laura Rodriguez-Lorenzo ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Comparative Study ◽  
Silver Nanoparticle ◽  
Biologically Relevant ◽  
Physiological Conditions ◽  
Aggregation Behaviour

The dissolution and aggregation behaviour of silver nanoparticles under physiological conditions and in biologically relevant environments is investigated by exploiting their plasmonic properties.

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