Nano- and microparticles at fluid and biological interfaces

Area of Science:

• Soft Matter Physics
• Colloid Science
• Biophysics

Background:

• Interfaces and membranes are ubiquitous in nature and technology, separating distinct phases or compartments.
• Fluid interfaces are characterized by surface tension, while lipid membranes exhibit bending and stretching elasticity.
• Amphiphilic molecules and cellular structures like the cytoskeleton influence interface and membrane properties.

Purpose of the Study:

• To review recent research on the interactions between particles and interfaces/membranes.
• To cover phenomena from single-particle behavior to many-particle interactions and curvature effects.
• To highlight applications of particle-interface/membrane systems.

Main Methods:

• Theoretical and computational modeling of particle-interface and particle-membrane interactions.
• Experimental studies on colloidal particles at fluid interfaces and nanoparticles interacting with lipid membranes.
• Analysis of particle behavior in external fields, with non-spherical shapes, and at curved interfaces.

Main Results:

• Particles can stabilize emulsions and form structures like colloidosomes at fluid interfaces.
• Nanoparticles interact with biological membranes, relevant for viruses, parasites, and drug delivery.
• Interface and membrane curvature significantly influence particle interactions and self-assembly.

Conclusions:

• The interaction of particles with interfaces and membranes is a rich field with diverse physical phenomena.
• This understanding is critical for developing advanced materials and biomedical technologies.
• Future research directions include complex particle shapes, dynamic interfaces, and biological system applications.