Jump to main content
Jump to site search

Themed collection Droplet dynamics and manipulation

7 items
Open Access Communication

Bijels stabilized using rod-like particles

The effect of stabilizing bicontinuous interfacially jammed emulsion gels, in short ‘bijels’, using rod-like instead of spherical colloidal particles is investigated.

Graphical abstract: Bijels stabilized using rod-like particles
From the themed collection: Droplet dynamics and manipulation
Paper

Near-post meniscus-induced migration and assembly of bubbles

A bubble near a post-induced meniscus moves to the highest position of the triple contact line.

Graphical abstract: Near-post meniscus-induced migration and assembly of bubbles
From the themed collection: Droplet dynamics and manipulation
Paper

Liquid plasticine: controlled deformation and recovery of droplets with interfacial nanoparticle jamming

An effective control of the shape and transparency of a water droplet is realized based on interfacial jamming of nanoparticles.

Graphical abstract: Liquid plasticine: controlled deformation and recovery of droplets with interfacial nanoparticle jamming
From the themed collection: Droplet dynamics and manipulation
Paper

Insertion and confinement of air bubbles inside a liquid marble

We present an effect that enables the insertion and confinement of air bubbles inside a liquid marble, based on encapsulating an air bubble surrounded by surfactant molecules or hydrophilic colloidal particles. This finding can stimulate fundamental studies of this novel bubble-marble phenomenon, as well as development of various practical applications.

Graphical abstract: Insertion and confinement of air bubbles inside a liquid marble
From the themed collection: Droplet dynamics and manipulation
Paper

Retracted Article: Linear model of a T-junction microdroplet generator for precise control of droplet size

From the themed collection: Droplet dynamics and manipulation
Paper

Growth kinetics of NaCl crystals in a drying drop of gelatin: transition from faceted to dendritic growth

Dynamics of transition between crystallization modes for NaCl in gelatin is studied through experiments and simulation.

Graphical abstract: Growth kinetics of NaCl crystals in a drying drop of gelatin: transition from faceted to dendritic growth
From the themed collection: Droplet dynamics and manipulation
Paper

Deformation of a floating liquid marble

We report the analytical and experimental characterisation of the deformation of a liquid marble floating on a liquid surface.

Graphical abstract: Deformation of a floating liquid marble
From the themed collection: Droplet dynamics and manipulation
7 items

About this collection

Droplets are one of the most commonly observed fluidic objectives in nature and daily life. However, they play very important role in many fields, such as inkjet printing, 3D printing, spray coating and cooling, biotechnology, tribology, etc. More interestingly, a single droplet can also act as a micro-reactor where chemical reactions or bio-reactions occur in a different manner as in the bulk container. Due to the important applications and abundant fundamental issues involved in, to investigate the dynamics and manipulation of droplets is highly desirable and quite challengeable due to the failure of the continuum approximation and the emerging stability problems. Until now, many techniques have been developed for the purpose of droplet manipulation, for instance, fabrication of super-wettablility surfaces, driving droplet motion using Marangoni effect induced by light/thermal or concentration gradient, manipulation or levitation by external fields such as electrostatic, magnetic, acoustic fields, etc.

In this collection, the effect of particle adsorption at droplet surface is highlighted. The presence of particles can alter the shape deformation of liquid marbles floating on liquid surface or even enable the confinement of air bubbles inside it. Various intriguing non-spherical shapes can be achieved by the interfacial jamming of the particles. At the liquid-liquid interface, rod-like particle can result in bi-jel formation at a much higher packing fraction than expected due to “slippers”. The shape of the meniscus also plays an important role in both the assembly of tiny objectives including particles and air bubbles, and the drying patterns of droplet.

In the future, with the advances in droplet manipulation, novel droplet based-devices, such as smart liquid lens, bio-reactors, metamaterials with tunable functions, will be designed and fabricated.

Dr. Duyang Zang

Northwestern Polytechnical University, Xi’an, China

Spotlight

Advertisements