We experimentally investigate the microfluidic flow of oil-in-water nanoemulsions in aqueous sodium dodecyl sulfate (SDS) solutions having different concentrations and injection flow rates. A coaxial microfluidic device is employed to explore the behavior of nanoemulsion threads in these sheathing SDS solutions. Using two high-speed cameras, which simultaneously capture both top and side views, we reveal a variety of flow phenomena, ranging from simple core-annular flow to complex flows, such as gravitational, inertial, and buckling thread flows. By analyzing these complex flows, we develop a methodology that elucidates the relationship of core-annular and gravitational flows at low flow rates. Further, we examine the off-axis displacements and bending of core threads at large flow rates, and we study the buckling dynamics of nanoemulsion threads subjected to osmotic stresses caused by large SDS concentrations in the sheathing fluid.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1103/PhysRevE.107.015101 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Microfluidic dissolution of nanoemulsions in solvents.
Soft Matter
October 2024
Department of Mechanical Engineering, Stony Brook University, Stony Brook, NY 11794, USA.
Article Synopsis
- The study examines how nanoemulsion and microscale emulsion jets behave in solvents using coaxial microfluidic devices, highlighting the impact of miscible solvents on the stability and dynamics of oil droplet dispersions in water.
- Researchers observe interesting microflow patterns in oil-in-water emulsions within isopropanol, identifying various flow regimes that affect how the droplets dissolve and interact over time.
- A new microflow method is introduced to estimate diffusion coefficients of emulsions, demonstrating the potential of microfluidic techniques for processing colloidal dispersions and managing their stability.
Microflow of nanoemulsion threads in surfactant solutions.
Phys Rev E
January 2023
Department of Mechanical Engineering, Stony Brook University, Stony Brook, New York 11794, USA.
We experimentally investigate the microfluidic flow of oil-in-water nanoemulsions in aqueous sodium dodecyl sulfate (SDS) solutions having different concentrations and injection flow rates. A coaxial microfluidic device is employed to explore the behavior of nanoemulsion threads in these sheathing SDS solutions. Using two high-speed cameras, which simultaneously capture both top and side views, we reveal a variety of flow phenomena, ranging from simple core-annular flow to complex flows, such as gravitational, inertial, and buckling thread flows.
View Article and Find Full Text PDFPhotodynamic therapy using chloro-aluminum phthalocyanine decreases inflammatory response in an experimental rat periodontal disease model.
J Photochem Photobiol B
February 2017
Department of Dentistry, Post-Graduate Program of Oral Pathology, Federal University of Rio Grande do Norte (UFRN), Natal, Rio Grande do Norte/RN, Brazil. Electronic address:
Background And Objective: Emerging evidence suggests that photodynamic therapy (PDT) can exhibit immunomodulatory activity. The purpose of the present study was to analyse cytokine profiles after application of PDT in gingival tissues of rats with ligature-induced periodontal disease (PD).
Study Design/material And Methods: Periodontal disease was induced through the introduction of a cotton thread around the first left mandibular molar, while the right side molars did not receive ligatures.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!