Nozzle Deposition
Nozzle Deposition - Related Videos
10:22
Nozzle Analysis: Variations in Mach Number and Pressure Along a Converging and a Converging-diverging Nozzle
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2023
Source: Shreyas Narsipur, Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC A nozzle is a device that is commonly used to accelerate or decelerate flow by virtue of its varying cross-section. Nozzles are widely used in aerospace propulsion systems. In rockets, propellant that is ejected from the chamber is accelerated through a nozzle to create a reaction force that propels the system. In jet engines, a nozzle is used to transform energy from a high-pressure...
08:14
Measuring Spray Droplet Size from Agricultural Nozzles Using Laser Diffraction
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Cited by 30 •
2016
We present protocols to be used in the measurement of spray droplet size from agricultural nozzles used in both aerial and ground based agrochemical applications. These methods presented were developed to provide consistent and repeatable droplet size data both inter- and intra-laboratory, when using laser diffraction systems.
07:13
Alginate Encapsulation of Pluripotent Stem Cells Using a Co-axial Nozzle
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Cited by 14 •
2015
We established a method of encapsulating pluripotent stem cells (PS cells) into alginate hydrogel capsules using a co-axial nozzle. This prevents cells from aggregating excessively and limits the shear stress experienced by cells in suspension culture. The technique is applicable to the mass production of PS cells as well as research on stem cell niche.
10:52
Formation of Thick Dense Yttrium Iron Garnet Films Using Aerosol Deposition
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Cited by 7 •
2015
This report describes the use of a custom-built system to perform aerosol deposition of thick films of yttrium iron garnet onto sapphire substrates at RT. The deposited films are characterized using scanning electron microscopy, profilometry, and ferromagnetic resonance to give a representative overview of the capabilities of the technique.
03:37
Production and Aerosol-Based Deposition of Bacillus subtilis Spores
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2025
Source: Fuchs, F. M., et al. Investigating the Detrimental Effects of Low Pressure Plasma Sterilization on the Survival of Bacillus subtilis Spores Using Live Cell Microscopy. J. Vis. Exp. (2017)This video demonstrates the production, purification, and aerosol-based deposition of Bacillus subtilis spores to create a uniform monolayer, enabling downstream applications such as microscopy-based analysis of spore germination, viability, or stress response.
FAQs
These variables jointly control how accurately material forms lines, droplets, or layered features. Viscosity affects flow behavior, while applied pressure and deposition speed regulate material delivery during motion. Nozzle diameter sets the scale of the deposited feature. In bioengineering, optimizing these parameters is also important because unsuitable conditions can reduce cell survival.
Pneumatic, piston, and screw-driven systems provide the force needed to move bioink through the nozzle. Their inclusion allows the deposition process to be matched to the material and desired structure, while computer-guided motion controls where the material is placed. The selected driving approach therefore contributes to consistency, geometry, and fabrication control.
Deposition alone does not necessarily produce a stable scaffold or tissue-like architecture. The material must solidify through a suitable process, such as cooling, chemical crosslinking, or another curing mechanism. This post-deposition change preserves the intended layers and geometry, allowing the fabricated structure to function as a scaffold or biological model.
A typical workflow selects a bioink, places it in a pneumatic, piston, or screw-driven delivery system, and deposits it through a shaped nozzle along computer-guided paths. Material is positioned layer by layer to build the planned architecture. After deposition, cooling, chemical crosslinking, or another curing process can stabilize the structure.
Nozzle deposition supports several bioengineering applications, including 3D bioprinting, regenerative medicine, drug delivery, and biological model development. Its ability to position material in controlled lines, droplets, and layered architectures makes it useful when researchers need organized scaffold or tissue-like structures rather than an undirected material placement.
A bioink must be processable through the nozzle while still meeting the needs of the intended biological construct. Researchers therefore adjust viscosity, pressure, nozzle diameter, and deposition speed while considering cell survival and the material's ability to form a stable architecture. This balance determines whether the final construct combines usable resolution with biological suitability.