Inter-droplet Forces
Inter-droplet Forces - Related Videos
04:56
Real-Time Force Measurement Between Emulsion Droplets During Enzymatic Breakdown
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2025
This protocol employs dual-trap optical tweezers to measure inter-droplet forces in real time during the enzymatic digestion of emulsions. It facilitates the study of emulsion stability and droplet dynamics, with applications in food science and pharmaceuticals.
14:16
Fluorescence detection methods for microfluidic droplet platforms
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Cited by 20 •
2011
Droplet-based microfluidic platforms are promising candidates for high throughput experimentation since they are able to generate picoliter, self-compartmentalized vessels inexpensively at kHz rates. Through integration with fast, sensitive and high resolution fluorescence spectroscopic methods, the large amounts of information generated within these systems can be efficiently extracted, harnessed and utilized.
07:18
Measuring the Interaction Force Between a Droplet and a Super-hydrophobic Substrate by the Optical Lever Method
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2019
The protocol aims to investigate the interaction between droplets and super-hydrophobic substrates in the air. This includes calibrating the measurement system and measuring the interaction force at super-hydrophobic substrates with different grid fractions.
06:45
Force Spectroscopy of Single Protein Molecules Using an Atomic Force Microscope
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Cited by 4 •
2019
We describe the detailed procedures and strategies to measure the mechanical properties and mechanical unfolding pathways of single protein molecules using an atomic force microscope. We also show representative results as a reference for selection and justification of good single protein molecule recordings.
10:52
Reconstitution of Basic Mitotic Spindles in Spherical Emulsion Droplets
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Cited by 19 •
2016
The assembly and positioning of the mitotic spindle depend on the combined forces generated by microtubule dynamics, motor proteins and cross-linkers. Here we present our recently developed methods in which the geometrical confinement of spherical emulsion droplets is used for the bottom-up reconstitution of basic mitotic spindles.
FAQs
Interfacial tension helps determine how a droplet resists deformation and responds when it meets another droplet. Capillary effects, which arise from the interface between immiscible liquids, act together with this tension to shape the contact and influence whether droplets remain separate or coalesce. In biochemical emulsions, these interactions are therefore important for maintaining controlled droplet structures.
Surfactant layers modify the properties of droplet interfaces, while electrostatic interactions can contribute to attraction or repulsion between neighboring droplets. Their combined effects influence whether droplets remain stable during encounters or merge. Controlling these interfacial and electrical contributions helps researchers manage unwanted coalescence in emulsions and preserve separated compartments for biochemical reactions.
Fluid flow brings droplets together and affects the conditions of their collision, while capillary effects influence deformation at the interface. Van der Waals forces add another short-range interaction that can contribute to the encounter outcome. Because several forces act simultaneously, changes in flow or interfacial conditions can alter collision behavior, deformation, and eventual coalescence.
Droplet behavior reflects the balance among interfacial tension, capillary effects, electrostatic interactions, van der Waals forces, surfactant layers, and fluid flow. A change in one contribution can shift the overall interaction from separation toward contact or coalescence, or change how strongly droplets deform. This balance explains why droplet stability must be evaluated within its specific biochemical system.
Emulsion formulation uses knowledge of inter-droplet interactions to manage droplet size, stability, and unwanted coalescence. Researchers consider the interfacial and flow-related factors that govern how droplets encounter one another, then use that understanding to support a more controlled dispersed system. These outcomes matter when droplets serve as separated environments for biochemical processes or molecular exchange.
In microfluidic assays, controlling droplet encounters helps researchers regulate compartment formation and the behavior of droplet-based reactions. In studies of liquid-liquid phase separation, the same physical principles provide context for how biomolecular condensates maintain organization and exchange molecules. This connects measurable droplet behavior with biochemical questions about compartmentalized reactions and cellular organization.