Spontaneous non-linear surface tension oscillations in the presence of a spread surfactant monolayer at the air/water interface

Grigorieva, O. V.; Kovalchuk, N. M.; Grigoriev, D. O.; Vollhardt, D.

doi:10.1016/j.colsurfa.2004.04.088

Cited by 18 publications

(4 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Marangoni convection is a liquid flow induced by spatial surface tension gradients which are caused by differences not only in temperature, but also composition [5]. In recent years, it has been reported that Marangoni convection causes spontaneous oscillation of surface tension [6][7][8]. In early studies, the spontaneous oscillation of surface tension due to Marangoni convection was vigorously studied for systems containing single-component surfactants [6,9].…”

Section: Introductionmentioning

confidence: 99%

“…By using numerical simulation based on fluid mechanics, the oscillation of surface tension was revealed to synchronize with the occurrence of Marangoni convection [10,11]. In later study, a system coexisting with a spread surfactant monolayer was also studied [7]. In this case, the amplitude and period depend on the initial surface coverage of the monolayer rather than the aspect ratio of the water container.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Understanding the Dynamics of a Lipid Monolayer on a Water Surface under a Marangoni Flow

Yano

Ina

Uruga

2021

Colloids and Interfaces

View full text Add to dashboard Cite

Biological membrane is composed of lipid molecules, because of its fluidity, it is possible to carry out physiological functions. Therefore, it is important to study the hydrodynamic properties of membranes toward understanding its function. Here, we observed the dynamical behavior of a lipid monolayer on the water surface under Marangoni flow. By using X-ray reflectometry, we obtained the tilt angle of the hydrocarbon chains of the lipid at different surface pressures. Comparing them with the dynamical surface pressure under Marangoni flow, it was found that the lipid molecules in rotational rather than translational motion. At low surface pressure, the molecular tilt angle is reduced by 20 degrees, even though the molecular area is reduced by at most 10%.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Understanding the Dynamics of a Lipid Monolayer on a Water Surface under a Marangoni Flow

Yano

Ina

Uruga

2021

Colloids and Interfaces

View full text Add to dashboard Cite

show abstract

“…Another way to produce spontaneous oscillation at the liquid interface is the use of only one transferred solute from the surfactant source in the bulk. Auto-oscillation of the surface tension was observed by dissolution of a surfactant droplet under the water surface. , Oscillation of the interfacial tension and of the electrical potential through the water/nitrobenzene interface occurs by gradual injection of an ionic surfactant into the bulk water . The peculiarity of all the systems considered is their nonlinearity.…”

Section: Introductionmentioning

confidence: 99%

Convective Instability in a Liquid−Liquid System Due to Complexation with a Crown Ether

Sczech¹,

Eckert²,

Acker³

2008

J. Phys. Chem. A

View full text Add to dashboard Cite

Periodic convective instability has been observed in a biphasic system during the complexation reaction of alkali picrate and dicyclohexano-18-crown-6 which undergoes mass transfer from the hexane phase into the aqueous phase. The convection was visualized by means of precipitated crystals that are formed in both phases by the complexation reaction. The fluid motion was observed with an optical microscope and further analyzed with the particle image velocimetry (PIV) technique. The partition at the extraction of cesium into the organic phase was followed by means of the radioactive isotope (137)Cs. The type of the hydrodynamic instability is governed by the alkali metal expressed via its stability constants for the complex formed. More stable complexes trigger a higher precipitation, thereby favoring a Raleigh-Taylor instability. Complexes with a lower stability constant induce Marangoni cells which show a pulsating character in a cubic container. Depending on the confinement of the experiment cell the fluid motion can also follow a back-and-forth movement. Possible mechanisms for the occurring oscillations are discussed.

show abstract

“…The droplet stays there for a long time under these conditions due to the balance between buoyancy and the pinning forces at the three-phase contact line. If a small amount of insoluble surfactant (hereafter acceptor surfactant, e.g., lipids) is previously spread on the water surface to form a monolayer, then spontaneous oscillations of the surface tension are observed, in which a gradual increase in surface tension follows after a sharp decrease. These curves are similar to those observed in the Marangoni-driven relaxation oscillations. , However, the spontaneous oscillations shown in Figure b were not observed over several hours under initial surface pressures of the monolayer (Π 0 ) of ≈0 (the yellow curve) and >30 mN/m (these regimes are further described below), where the surface pressure is defined by the equation Π = γ w – γ ( γ w is the surface tension of water).…”

mentioning

confidence: 99%

Periodic Elastic Motion in a Self-Assembled Monolayer under Spontaneous Oscillations of Surface Tension: Molecules in a Scrum Push Back a Marangoni Flow

Yano

Tada

Arakawa

et al. 2020

J. Phys. Chem. Lett.

View full text Add to dashboard Cite

Regularly recurring phenomena are a common and important part of life. Such rhythmic behaviors are often seen in nonliving systems under far-from-equilibrium conditions. The study of simple nonliving systems provides clues for improving our understanding of the origin of biological rhythms. Here, we focus on the spontaneous oscillation of surface tension associated with an intermittent Marangoni convective flow generated by two types of surfactants, those that are partially soluble (long chain alcohols) and insoluble (lipids) in water. In this system, we find that the collective motions of two surfactants interact with each other in a systematic manner to control a stable periodic motion: the alcohol molecules (donor) produce a Marangoni flow, and the lipid molecules (acceptor) in a monolayer push the flow back. The shape of the surface tension oscillation can be explained by the viscoelastic properties of the acceptor surfactant, whereas the period of the surface tension oscillation has been explained by the physical properties of the donor surfactant. A recently developed time-resolved X-ray surface scattering technique enables the dynamic structure of the water surface under flow to be determined. We have repeatedly observed that lipid molecules at the air− water interface become regularly oriented normal to the surface at every onset of the Marangoni convective flow.

show abstract

Spontaneous non-linear surface tension oscillations in the presence of a spread surfactant monolayer at the air/water interface

Cited by 18 publications

References 25 publications

Understanding the Dynamics of a Lipid Monolayer on a Water Surface under a Marangoni Flow

Understanding the Dynamics of a Lipid Monolayer on a Water Surface under a Marangoni Flow

Convective Instability in a Liquid−Liquid System Due to Complexation with a Crown Ether

Periodic Elastic Motion in a Self-Assembled Monolayer under Spontaneous Oscillations of Surface Tension: Molecules in a Scrum Push Back a Marangoni Flow

Contact Info

Product

Resources

About