Particle Leaching Method
Particle Leaching Method - Related Videos
01:27
Microbial Leaching
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2026
Microbial leaching, also known as bioleaching, is an environmentally favorable method for extracting metals from low-grade ores using specific microorganisms. This biotechnological approach is particularly valuable for mining operations targeting copper, gold, and uranium, where traditional extraction methods may be economically or environmentally impractical.Copper Leaching and Microbial CatalysisIn copper bioleaching, crushed ore is arranged into heaps and irrigated with a dilute sulfuric...
07:06
Particle Agglutination Method for Poliovirus Identification
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2011
A recently developed novel particle agglutination (PA) assay utilizing virus receptor molecule allowed a rapid and easy identification of poliovirus (PV). In this article, we will show the procedure for the PA assay for PV identification.
12:34
Methods for Measuring the Orientation and Rotation Rate of 3D-printed Particles in Turbulence
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Cited by 7 •
2016
We use 3D printing to fabricate anisotropic particles in the shapes of jacks, crosses, tetrads, and triads, whose alignments and rotations in turbulent fluid flow can be measured from multiple simultaneous video images.
14:59
Method for Measurement of Viral Fusion Kinetics at the Single Particle Level
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Cited by 11 •
2009
We present an in vitro, two-color fluorescence assay to visualize the fusion of single virus particles with a fluid target bilayer. By labeling viral particles with fluorophores that differentially stain the viral membrane and its interior, we are able to monitor the kinetics of hemifusion and pore formation.
05:35
Quantification of Metal Leaching in Immobilized Metal Affinity Chromatography
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Cited by 5 •
2020
We present an assay for easy quantification of metals introduced to samples prepared using immobilized metal affinity chromatography. The method uses hydroxynaphthol blue as the colorimetric metal indicator and a UV-Vis spectrophotometer as the detector.
FAQs
Particle size primarily sets the approximate pore size formed after extraction, while particle concentration influences the overall porosity of the solidified material. Changing these variables allows researchers to control scaffold architecture rather than producing identical structures in every preparation. Their combined effect also influences how readily pores connect throughout the matrix.
The matrix must first solidify around the embedded particles so that the intended structure is retained. A solvent then dissolves and removes the water-soluble porogen, creating empty spaces where the particles had been located. This sequence converts the original particle distribution into pores while preserving the surrounding polymer, ceramic, or composite framework.
Interconnected pores provide continuous pathways through the scaffold rather than isolated cavities. These pathways are relevant to cell seeding, nutrient transport, and tissue ingrowth, because cells and transported materials can access more of the three-dimensional structure. Consequently, interconnectivity is an important architectural outcome to consider alongside pore size and total porosity.
The porogen can be embedded in a polymer, ceramic, or composite matrix before extraction. This choice determines the material system in which the pores are generated, while the dissolvable particles provide the removable phase. Particle leaching therefore serves as an architectural strategy that can be applied across several matrix categories in bioengineering research.
A typical sequence begins by mixing salt, sugar, or another water-soluble porogen into the selected matrix. The mixture is then allowed to solidify, after which a solvent dissolves and extracts the embedded particles. The remaining matrix contains pores corresponding to the removed material, producing a three-dimensional porous structure for subsequent scaffold-related work.
Researchers select a dissolvable porogen, such as salt or sugar, and combine it with a polymer, ceramic, or composite matrix. The important controllable conditions include particle size, particle concentration, and the conditions used for solvent-based leaching. Together, these choices influence pore size, porosity, and interconnectivity in the finished material.
The method is useful when researchers need to fabricate a porous three-dimensional scaffold with adjustable architecture. The resulting structures can support cell seeding, nutrient transport, and tissue ingrowth, making them relevant to tissue engineering and regenerative research. It is especially valuable when pore characteristics must be tuned through particle selection and extraction conditions.