Performance of Different “Lab-On-Chip” Geometries for Making Double Emulsions to Form Polystyrene Shells
Abstract
Fluid properties and the geometry of lab-on-chip (LOC) designs together affect the formation of double emulsions for making inertial confinement fusion targets. Critical fluid properties include the fluids’ velocities and interfacial tension—a coupled effect that is best characterized by the capillary number (Ca)—and the relative volumetric flow rates (φ). The important geometry of the LOC is the orientation of the channels where they intersect (junction) and the spacing between successive junctions. T-junctions and focus-flow devices were tested. The latter geometry of a double cross (focus flow) performed better: single-emulsion droplets were formed over a wide range of fluid parameters (0.03 < φ < 0.17 and 0.0003 < Ca < 0.001) at the first junction, and double emulsions were formed over a more limited range (φ > 0.5 and Ca < 0.4) at the second junction. A LOC design using the focus-flow design formed water–oil–water (W/O/W) double emulsions with the oil phase containing polystyrene. The double emulsions yielded shells with an outer dimension ranging from 2.3±0.07 mm to 4.3±0.23 mm and a wall thickness ranging from 30 μm to 1.6 mm. Thus, the value of the flow-rate ratio at the second junction provided the most-effective parameter for controlling the inner diameter,more »
- Authors:
-
- Univ. of Rochester, NY (United States). Lab. for Laser Energetics
- Univ. of Rochester, NY (United States). Dept. of Chemical Engineering
- Publication Date:
- Research Org.:
- Univ. of Rochester, NY (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA); New York State Energy Research and Development Authority (NYSERDA)
- OSTI Identifier:
- 1427163
- Report Number(s):
- 2016-252, 1383
Journal ID: ISSN 1536-1055; 2017-252, 1383, 2340
- Grant/Contract Number:
- NA0001944
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Fusion Science and Technology
- Additional Journal Information:
- Journal Volume: 73; Journal Issue: 2; Conference: 22nd Target Fabrication Meeting, Las Vegas, NV, 12-16 March 2017; Journal ID: ISSN 1536-1055
- Publisher:
- American Nuclear Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 77 NANOSCIENCE AND NANOTECHNOLOGY; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Citation Formats
Viza, N. D., and Harding, D. R. Performance of Different “Lab-On-Chip” Geometries for Making Double Emulsions to Form Polystyrene Shells. United States: N. p., 2017.
Web. doi:10.1080/15361055.2017.1391662.
Viza, N. D., & Harding, D. R. Performance of Different “Lab-On-Chip” Geometries for Making Double Emulsions to Form Polystyrene Shells. United States. https://doi.org/10.1080/15361055.2017.1391662
Viza, N. D., and Harding, D. R. Wed .
"Performance of Different “Lab-On-Chip” Geometries for Making Double Emulsions to Form Polystyrene Shells". United States. https://doi.org/10.1080/15361055.2017.1391662. https://www.osti.gov/servlets/purl/1427163.
@article{osti_1427163,
title = {Performance of Different “Lab-On-Chip” Geometries for Making Double Emulsions to Form Polystyrene Shells},
author = {Viza, N. D. and Harding, D. R.},
abstractNote = {Fluid properties and the geometry of lab-on-chip (LOC) designs together affect the formation of double emulsions for making inertial confinement fusion targets. Critical fluid properties include the fluids’ velocities and interfacial tension—a coupled effect that is best characterized by the capillary number (Ca)—and the relative volumetric flow rates (φ). The important geometry of the LOC is the orientation of the channels where they intersect (junction) and the spacing between successive junctions. T-junctions and focus-flow devices were tested. The latter geometry of a double cross (focus flow) performed better: single-emulsion droplets were formed over a wide range of fluid parameters (0.03 < φ < 0.17 and 0.0003 < Ca < 0.001) at the first junction, and double emulsions were formed over a more limited range (φ > 0.5 and Ca < 0.4) at the second junction. A LOC design using the focus-flow design formed water–oil–water (W/O/W) double emulsions with the oil phase containing polystyrene. The double emulsions yielded shells with an outer dimension ranging from 2.3±0.07 mm to 4.3±0.23 mm and a wall thickness ranging from 30 μm to 1.6 mm. Thus, the value of the flow-rate ratio at the second junction provided the most-effective parameter for controlling the inner diameter, outer diameter, and wall thickness of the shell.},
doi = {10.1080/15361055.2017.1391662},
journal = {Fusion Science and Technology},
number = 2,
volume = 73,
place = {United States},
year = {Wed Dec 20 00:00:00 EST 2017},
month = {Wed Dec 20 00:00:00 EST 2017}
}
Web of Science
Figures / Tables:
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Figures / Tables found in this record: