Solid Particle Encapsulation
Solid Particle Encapsulation - Related Videos
09:27
Encapsulation and Permeability Characteristics of Plasma Polymerized Hollow Particles
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Cited by 1 •
2012
We have used plasma enhanced chemical vapor deposition to deposit thin films ranging from a few nm to several 100 nm on nano-sized particles of various materials. We subsequently etch the core material to produce hollow nanoshells whose permeability is controlled by the thickness of the shell. We characterize the permeability of these coatings to small solutes and demonstrate that these barriers can provide sustained release of the core material over several days.
04:42
Bacterial Cellulose Spheres that Encapsulate Solid Materials
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Cited by 1 •
2021
This protocol presents an easy, inexpensive method of forming bacterial cellulose (BC) spheres. This biomaterial can function as an encapsulation medium for solid materials, including biochar, polymer spheres, and mine waste.
14:22
Activating Molecules, Ions, and Solid Particles with Acoustic Cavitation
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Cited by 6 •
2014
Acoustic cavitation in liquids submitted to power ultrasound creates transient extreme conditions inside the collapsing bubbles, which are the origin of unusual chemical reactivity and light emission, known as sonoluminescence. In the presence of noble gases, nonequilibrium plasma is formed. The "hot" particles and the photons generated by collapsing bubbles are able to excite species in solution.
16:19
High Throughput Single-cell and Multiple-cell Micro-encapsulation
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Cited by 18 •
2012
Combining monodisperse drop generation with inertial ordering of cells and particles, we describe a method to encapsulate a desired number of cells or particles in a single drop at kHz rates. We demonstrate efficiencies twice exceeding those of unordered encapsulation for single- and double-particle drops.
02:22
Structures of Solids
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2020
Solids in which the atoms, ions, or molecules are arranged in a definite repeating pattern are known as crystalline solids. Metals and ionic compounds typically form ordered, crystalline solids. A crystalline solid has a precise melting temperature because each atom or molecule of the same type is held in place with the same forces or energy. Amorphous solids or non-crystalline solids (or, sometimes, glasses) which lack an ordered internal structure and are randomly arranged. Substances that...
FAQs
Shell thickness helps determine how the encapsulated particles respond at their surfaces and how readily a contained active ingredient can be released. Engineering teams adjust thickness to balance protection against environmental exposure with the desired release behavior. Consistent thickness also supports more predictable particle performance, making thickness control important when reliability and repeatable processing outcomes are required.
Several processing routes can deposit the coating around solid cores. Fluidization and spraying apply coating material while particles are handled as separate units, whereas solvent removal or melt solidification forms the shell as the coating material changes state. The selected mechanism affects how the coating is deposited and which processing conditions must be controlled during shell formation.
These variables influence whether the coating forms a continuous shell and whether the resulting particles achieve consistent surface and release properties. Particle size affects the units being coated, while moisture and temperature influence processing conditions. Coating thickness directly contributes to protection and delivery behavior, so coordinated control helps limit variability in the final particle product.
A typical workflow begins by selecting the solid core and coating material, then choosing a suitable deposition route such as fluidization, spraying, solvent removal, or melt solidification. The process deposits coating around individual particles while operators manage particle size, moisture, temperature, and thickness. Processing continues until a continuous shell with the intended functional properties is formed.
The approach is useful when a product requires improved handling, stability, dispersibility, or resistance to environmental exposure. It also supports controlled delivery of active ingredients. These capabilities make the technology relevant to pharmaceutical and food processing, as well as agriculture, catalysis, and advanced materials, where particle behavior can influence product reliability and manufacturing efficiency.
Encapsulated particles can be engineered for controlled surface behavior and release, while also improving practical characteristics such as handling and dispersibility. In pharmaceuticals, food processing, and agriculture, these features can support delivery of active ingredients. In catalysis and advanced materials, tailored particle performance can contribute to more reliable products and more efficient manufacturing processes.