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Volumn 2, Issue 2, 2012, Pages 56-62

Simplified mesofluidic systems for the formation of micron to millimeter droplets and the synthesis of materials

Author keywords

continuous materials synthesis; fluid dynamics; materials synthesis; microfluidics; monodisperse emulsions

Indexed keywords


EID: 84883343309     PISSN: 2062249X     EISSN: 20630212     Source Type: Journal    
DOI: 10.1556/JFC-D-11-00023     Document Type: Article
Times cited : (14)

References (72)
  • 8
  • 39
    • 84883376045 scopus 로고    scopus 로고
    • 584 Km inner diameter/902 Km outer diameter to 1,194 Km inner diameter/1,651 Km outer diameter
    • 584 Km inner diameter/902 Km outer diameter to 1,194 Km inner diameter/1,651 Km outer diameter.
  • 41
    • 0003602221 scopus 로고    scopus 로고
    • Preparation & Chemical Applications; Citus Books: London
    • Arshady, R.: Microspheres, Microcapsules, & Liposomes. Volume 1: Preparation & Chemical Applications; Citus Books: London, 1999; Vol. 1, p 576.
    • (1999) Microspheres Microcapsules, & Liposomes , vol.1 , Issue.1 , pp. 576
    • Arshady, R.1
  • 43
    • 84883346436 scopus 로고    scopus 로고
    • For the dimensional analysis, we make several assumptions. First, owing to the small size of the microfluidic device, the Reynolds numbers of the flows were small, so inertial effects can be ignored The surfactant used in some of the continuous phase fluids affected the measured interfacial tension of the system, but we assumed it played no other role in drop formation
    • For the dimensional analysis, we make several assumptions. First, owing to the small size of the microfluidic device, the Reynolds numbers of the flows were small, so inertial effects can be ignored. Also, we assume that the density differences between the fluids are sufficiently small that buoyancy is unimportant. The surfactant used in some of the continuous phase fluids affected the measured interfacial tension of the system, but we assumed it played no other role in drop formation.
    • Also, We Assume That the Density Differences between the Fluids Are Sufficiently Small That Buoyancy Is Unimportant
  • 45
    • 84883336114 scopus 로고    scopus 로고
    • For the TJD, we used the average velocity, in the PVC tube for vc. For the FFD, we used the average velocity at the outlet adapter for vc, which is appropriate because we placed the tip of the disperse phase needle as close as possible to the tip of the outlet adapter
    • Ca was calculated using the physical parameters listed in Table 1 and vc calculated from volumetric flow rates. For the TJD, we used the average velocity, in the PVC tube for vc. For the FFD, we used the average velocity at the outlet adapter for vc, which is appropriate because we placed the tip of the disperse phase needle as close as possible to the tip of the outlet adapter
  • 46
    • 84883340885 scopus 로고    scopus 로고
    • Owing to geometric arguments and mass conservation, the fluid velocity at the outlet adapter, where the droplets formed, was seven times the velocity in the PVC outlet tube
    • Owing to geometric arguments and mass conservation, the fluid velocity at the outlet adapter, where the droplets formed, was seven times the velocity in the PVC outlet tube.
  • 52
    • 84883438267 scopus 로고    scopus 로고
    • However, the range of Ca examined was lower than the range in our systems (i.e. 10j4-10j2 vs. 10j3-101 in this study), and the device geometries differed significantly between the two experiments
    • Garstecki et al. (ref. 21) found that L has no effect on droplet size in a microfluidic T-junction operating in a squeezing regime. However, the range of Ca examined was lower than the range in our systems (i.e. 10j4-10j2 vs. 10j3-101 in this study), and the device geometries differed significantly between the two experiments
    • Found That L Has No Effect on Droplet Size in A Microfluidic T-junction Operating in A Squeezing Regime
    • Garstecki1
  • 53
    • 84883319085 scopus 로고    scopus 로고
    • Also reported little effect of viscosity ratio on droplet diameter in a coaxial flow cell, but their smallest L corresponds to the highest L used in our work, and the disperse phase flow rates were at least 2.5 times greater.
    • Cramer et al. (ref. 32a) also reported little effect of viscosity ratio on droplet diameter in a coaxial flow cell, but their smallest L corresponds to the highest L used in our work, and the disperse phase flow rates were at least 2.5 times greater.
    • Cramer1


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.