Observation and manipulation of a capillary jet in a centrifuge-based droplet shooting device

Kazuki Maeda, Hiroaki Onoe, Masahiro Takinoue, Shoji Takeuchi

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We report observation and manipulation of a capillary jet under ultra-high centrifugal gravity in a proposed capillary-based fluidic device for the synthesis of microparticles in a centrifugal tube called Centrifuge-Based Droplet Shooting Device (CDSD). Using a high-speed camera, we directly observed the dripping to jetting transition of a viscous capillary jet of water and Sodium alginate solution generated from a glass capillary-orifice of a diameter of O (100) μm under centrifugal gravity ranging from 190 to 450 g. A non-dimensional analysis shows that the mechanism of the dripping-jetting transition in the CDSD may follow that previously reported for a dripping faucet under standard gravity. We also fabricated calcium alginate microparticles by gelating droplets of sodium alginate solution obtained in the break-up of the capillary jet in the jetting regime and demonstrated fabrication of microbeads-on-a-string structures. We confirmed that the jetting regime of the capillary jet could be used to fabricate smaller particles than that of the dripping regime. The results show that the CDSD would be a more useful device to fabricate various polymeric structures and understand the physics of fluid jets under ultra-high gravity.

Original languageEnglish
Pages (from-to)1526-1533
Number of pages8
JournalMicromachines
Volume6
Issue number10
DOIs
Publication statusPublished - 2015
Externally publishedYes

Fingerprint

Centrifuges
Gravitation
Sodium alginate
Fluidic devices
Drop breakup
High speed cameras
Alginate
Orifices
Calcium
Physics
Fabrication
Glass
Fluids
Water

Keywords

  • Centrifuge
  • High-speed visualization
  • Microfluidics
  • Polymeric particles

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Control and Systems Engineering
  • Mechanical Engineering

Cite this

Observation and manipulation of a capillary jet in a centrifuge-based droplet shooting device. / Maeda, Kazuki; Onoe, Hiroaki; Takinoue, Masahiro; Takeuchi, Shoji.

In: Micromachines, Vol. 6, No. 10, 2015, p. 1526-1533.

Research output: Contribution to journalArticle

Maeda, Kazuki ; Onoe, Hiroaki ; Takinoue, Masahiro ; Takeuchi, Shoji. / Observation and manipulation of a capillary jet in a centrifuge-based droplet shooting device. In: Micromachines. 2015 ; Vol. 6, No. 10. pp. 1526-1533.
@article{918e185f1f3843b8aedcebd42d6d24a1,
title = "Observation and manipulation of a capillary jet in a centrifuge-based droplet shooting device",
abstract = "We report observation and manipulation of a capillary jet under ultra-high centrifugal gravity in a proposed capillary-based fluidic device for the synthesis of microparticles in a centrifugal tube called Centrifuge-Based Droplet Shooting Device (CDSD). Using a high-speed camera, we directly observed the dripping to jetting transition of a viscous capillary jet of water and Sodium alginate solution generated from a glass capillary-orifice of a diameter of O (100) μm under centrifugal gravity ranging from 190 to 450 g. A non-dimensional analysis shows that the mechanism of the dripping-jetting transition in the CDSD may follow that previously reported for a dripping faucet under standard gravity. We also fabricated calcium alginate microparticles by gelating droplets of sodium alginate solution obtained in the break-up of the capillary jet in the jetting regime and demonstrated fabrication of microbeads-on-a-string structures. We confirmed that the jetting regime of the capillary jet could be used to fabricate smaller particles than that of the dripping regime. The results show that the CDSD would be a more useful device to fabricate various polymeric structures and understand the physics of fluid jets under ultra-high gravity.",
keywords = "Centrifuge, High-speed visualization, Microfluidics, Polymeric particles",
author = "Kazuki Maeda and Hiroaki Onoe and Masahiro Takinoue and Shoji Takeuchi",
year = "2015",
doi = "10.3390/mi6101435",
language = "English",
volume = "6",
pages = "1526--1533",
journal = "Micromachines",
issn = "2072-666X",
publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",
number = "10",

}

TY - JOUR

T1 - Observation and manipulation of a capillary jet in a centrifuge-based droplet shooting device

AU - Maeda, Kazuki

AU - Onoe, Hiroaki

AU - Takinoue, Masahiro

AU - Takeuchi, Shoji

PY - 2015

Y1 - 2015

N2 - We report observation and manipulation of a capillary jet under ultra-high centrifugal gravity in a proposed capillary-based fluidic device for the synthesis of microparticles in a centrifugal tube called Centrifuge-Based Droplet Shooting Device (CDSD). Using a high-speed camera, we directly observed the dripping to jetting transition of a viscous capillary jet of water and Sodium alginate solution generated from a glass capillary-orifice of a diameter of O (100) μm under centrifugal gravity ranging from 190 to 450 g. A non-dimensional analysis shows that the mechanism of the dripping-jetting transition in the CDSD may follow that previously reported for a dripping faucet under standard gravity. We also fabricated calcium alginate microparticles by gelating droplets of sodium alginate solution obtained in the break-up of the capillary jet in the jetting regime and demonstrated fabrication of microbeads-on-a-string structures. We confirmed that the jetting regime of the capillary jet could be used to fabricate smaller particles than that of the dripping regime. The results show that the CDSD would be a more useful device to fabricate various polymeric structures and understand the physics of fluid jets under ultra-high gravity.

AB - We report observation and manipulation of a capillary jet under ultra-high centrifugal gravity in a proposed capillary-based fluidic device for the synthesis of microparticles in a centrifugal tube called Centrifuge-Based Droplet Shooting Device (CDSD). Using a high-speed camera, we directly observed the dripping to jetting transition of a viscous capillary jet of water and Sodium alginate solution generated from a glass capillary-orifice of a diameter of O (100) μm under centrifugal gravity ranging from 190 to 450 g. A non-dimensional analysis shows that the mechanism of the dripping-jetting transition in the CDSD may follow that previously reported for a dripping faucet under standard gravity. We also fabricated calcium alginate microparticles by gelating droplets of sodium alginate solution obtained in the break-up of the capillary jet in the jetting regime and demonstrated fabrication of microbeads-on-a-string structures. We confirmed that the jetting regime of the capillary jet could be used to fabricate smaller particles than that of the dripping regime. The results show that the CDSD would be a more useful device to fabricate various polymeric structures and understand the physics of fluid jets under ultra-high gravity.

KW - Centrifuge

KW - High-speed visualization

KW - Microfluidics

KW - Polymeric particles

UR - http://www.scopus.com/inward/record.url?scp=84946415774&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84946415774&partnerID=8YFLogxK

U2 - 10.3390/mi6101435

DO - 10.3390/mi6101435

M3 - Article

VL - 6

SP - 1526

EP - 1533

JO - Micromachines

JF - Micromachines

SN - 2072-666X

IS - 10

ER -