Hydro-Expandable Calcium Phosphate Micro/Nano-Particles with Controllable Size and Morphology for Mechanical Ablation

2021 ◽  
Author(s):  
Tengyu He ◽  
David G. Bradley ◽  
Jiajing Zhou ◽  
Alec Jorns ◽  
Yash Mantri ◽  
...  
Keyword(s):  
Calcium Phosphate ◽  
Nano Particles ◽  
Size And Morphology ◽  
Controllable Size

Particle-size and morphology dependence of the preferred interface orientation in LiFePO4 nano-particles

2014 ◽  
Vol 2 (37) ◽  
pp. 15437-15447 ◽  
Author(s):  
Aziz Abdellahi ◽  
Oncu Akyildiz ◽  
Rahul Malik ◽  
Katsuyo Thornton ◽  
Gerbrand Ceder
Keyword(s):  
Particle Size ◽  
First Principles ◽  
Nano Particles ◽  
Particle Size And Morphology ◽  
Interface Orientation ◽  
Size And Morphology

Using calculations based on first principles, we demonstrate that the preferred interface in singles LiFePO4 particles depends both on the particle size and morphology.

Preparation of ultrafine silver powders with controllable size and morphology

2018 ◽  
Vol 28 (3) ◽  
pp. 524-533 ◽  
Author(s):  
Qing-hua TIAN ◽  
Duo DENG ◽  
Yu LI ◽  
Xue-yi GUO
Keyword(s):  
Size And Morphology ◽  
Controllable Size

A facile synthesis to Zn2SiO4:Mn2+ phosphor with controllable size and morphology at low temperature

2007 ◽  
Vol 314 (2) ◽  
pp. 510-513 ◽  
Author(s):  
Tian Jun Lou ◽  
Jing Hui Zeng ◽  
Xiang Dong Lou ◽  
Hai Li Fu ◽  
Ye Feng Wang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Facile Synthesis ◽  
Size And Morphology ◽  
Controllable Size

A facile green approach for synthesizing monodisperse magnetite nanoparticles

2010 ◽  
Vol 25 (5) ◽  
pp. 810-813 ◽  
Author(s):  
Ling Li ◽  
Jun Ding ◽  
Junmin Xue
Keyword(s):  
Oleic Acid ◽  
Magnetite Nanoparticles ◽  
Synthetic Methods ◽  
Capping Agent ◽  
High Quality ◽  
Green Approach ◽  
Surfactant Complex ◽  
Acid Ratio ◽  
Size And Morphology ◽  
Controllable Size

The synthesis of monodisperse magnetite nanoparticles (Fe3O4 NPs) has been widely investigated over the last decade. Among the various synthetic methods, thermal decomposition of iron acetylacetonate, Fe(acac)3, or the premade iron-surfactant complex, was demonstrated to be promising to obtain monodisperse Fe3O4 NPs with controllable size and morphology. However, toxic and expensive precursors or tedious experimental procedures are normally required in these approaches. In this communication, we report a facile chemical top-down method to synthesize monodisperse magnetite NPs by using rust, which is mainly composed of γ-Fe2O3, as the iron source and oleic acid as the capping agent. The particle size, and hence the magnetization, of NPs can be readily controlled by adjusting the rust/oleic acid ratio and reaction temperature. This process is a green chemical approach and is easy to be reproduced and scaled up, which could be developed as an effective way to convert waste materials into high quality nanocrystals.

The role of shell/core saturation level on the accuracy and mechanical characteristics of porous calcium phosphate models produced by 3Dprinting

2015 ◽  
Vol 21 (1) ◽  
pp. 43-55 ◽  
Author(s):  
Miguel Castilho ◽  
Barbara Gouveia ◽  
Inês Pires ◽  
Jorge Rodrigues ◽  
Manuel Pereira
Keyword(s):  
Calcium Phosphate ◽  
Structural Characteristics ◽  
Three Dimensional ◽  
Sem Analysis ◽  
Strength Distribution ◽  
Saturation Level ◽  
Content Type ◽  
Core Saturation ◽  
Size And Morphology ◽  
Binder Saturation

Purpose – This paper aims to study the influence of the binder saturation level on the accuracy and on the mechanical properties of three-dimensional (3D)-printed scaffolds for bone tissue engineering. Design/methodology/approach – To study the influence of the liquid binder volume on the models accuracy, two quality test plates with different macropore sizes were designed and produced. For the mechanical and physical characterisation, cylindrical specimens were used. The models were printed using a calcium phosphate powder, which was characterised in terms of composition, particle size and morphology, by X-ray diffraction (XRD), laser diffraction and Scanning electron microscopy (SEM) analysis. The sample’s physical characterisation was made using the Archimedes method (porosity), SEM, micro-computer tomography (CT) and digital scan techniques, while the mechanical characterisation was performed by means of uniaxial compressive tests. Strength distribution was analysed using a statistical Weibull approach, and the dependence of the compressive strength on the porosity was discussed. Findings – The saturation level is determinant for the structural characteristics, accuracy and strength the models produced by three-dimensional printing (3DP). Samples printed with the highest saturation showed higher compressive strengths (24 MPa), which are over the human trabecular bone. The models printed with lower saturations presented the highest accuracy and pore interconnectivity. Originality/value – This study allowed to acquire important knowledge concerning the effects of shell/core saturation on the overall performance of the 3DP. With this information it is possible to devise scaffolds with the required properties for bone scaffold engineering.

Effect of Zinc, Copper and Calcium Phosphate Nano Particles on Growth of Spirulina platensis

2014 ◽  
Vol 37 (3) ◽  
pp. 207-212 ◽  
Author(s):  
Tapan Adhikari ◽  
S. Kundu ◽  
Ajay A. K. Biswas ◽  
J. C. Tarafdar ◽  
A. Subba Rao
Keyword(s):  
Calcium Phosphate ◽  
Spirulina Platensis ◽  
Nano Particles
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