Droplet Generation Techniques
Droplet Generation Techniques - Related Videos
03:37
Lipid Droplet Staining of Larval Drosophila Oenocytes: A Technique for Assessment of Lipid Droplet Accumulation Under Normal and Stressed Condition Using BODIPY-Based Dye
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2025
This video demonstrates lipid droplet staining in Drosophila larval oenocytes - hepatocyte-like cells - using the lipophilic fluorescent BODIPY based dye. These cells act as a model for studying lipid metabolism during development and in response to environmental stress such as starvation.
09:41
Isolation of Cellular Lipid Droplets: Two Purification Techniques Starting from Yeast Cells and Human Placentas
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Cited by 15 •
2014
Two techniques for isolating cellular lipid droplets from 1) yeast cells and 2) human placentas are presented. The centerpiece of both procedures is density gradient centrifugation, where the resulting floating layer containing the droplets can be readily visualized by eye, extracted, and quantified by Western Blot analysis for purity.
09:05
Methylation Specific Multiplex Droplet PCR using Polymer Droplet Generator Device for Hematological Diagnostics
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2020
Epigenetic markers are used for white blood cell (WBC) subtyping through the quantification of DNA methylation patterns. This protocol presents a multiplex droplet polymerase chain reaction (mdPCR) method using a thermoplastic elastomer (TPE)-based microfluidic device for droplet generation allowing for precise and multiplex methylation-specific target quantification of WBC differential counts.
04:07
Droplet Digital Polymerase Chain Reaction: A Method to Generate Nanodroplet PCR Reactions for Detecting Rare Tumor Mutations
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2025
In this video, we present a step-by-step procedure to generate emulsified nano-droplets to detect target nucleic acids by digital polymerase chain reaction or dPCR.
03:33
Hanging Drop Method: A Technique to Generate 3D Melanoma Spheroids
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2023
This video describes the technique of generating three-dimensional spheroids via the hanging drop method using melanoma cells. The generated in vitro three-dimensional (3D) organotypic melanoma spheroid model can portray the in vivo architecture of malignant melanoma and may give insights into intra-tumoral...
FAQs
At the device junction, the aqueous and immiscible oil phases are directed into contact, and one phase becomes segmented as flow conditions overcome its continuity. Junction or flow-focusing geometry helps regulate where breakup occurs, while the selected phase arrangement contributes to compartment composition and production behavior from droplet to droplet.
Interfacial tension helps maintain the boundary between the aqueous and oil phases, whereas controlled shear promotes breakup at the junction or flow-focusing region. Their interaction determines whether the dispersed phase separates into discrete compartments. Managing these forces supports reproducible droplet formation, which is important when experiments require standardized microenvironments.
Surfactants stabilize the interfaces separating droplets from the surrounding immiscible phase. By supporting interfacial stability, they help preserve droplet integrity after formation and promote greater uniformity across the generated compartments. This stabilization is especially relevant when droplets must maintain defined compositions or isolated biological contents during an experiment.
Droplet outcomes depend on how the aqueous and oil phases meet within the microfluidic device, including the junction or flow-focusing arrangement and the conditions governing breakup. These process features influence compartment size, composition, and production rate. Controlling them allows researchers to standardize experiments and adjust the generated microenvironments for different bioengineering goals.
A typical workflow brings an aqueous phase and an immiscible oil phase together inside a microfluidic device. At a junction or flow-focusing region, interfacial tension and controlled shear divide one phase into compartments, while surfactants stabilize the interfaces. The resulting droplets can then serve as defined, isolated environments for downstream bioengineering experiments.
These techniques are useful when researchers need to isolate reactions or living cells in small, defined environments while reducing reagent use. Supported applications include cell encapsulation, digital assays, directed evolution, biomolecule screening, and tissue or organoid engineering. They also increase experimental throughput by allowing many standardized compartments to be produced.
Droplet-based systems support miniaturized experiments in which compartment size, composition, and production rate can be controlled. This standardization helps researchers create comparable microenvironments for biological reactions, cells, biomolecules, tissues, or organoids. In bioengineering, the approach can improve throughput and reduce reagent consumption while enabling isolation-based analysis and screening.