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Li Y, Liu X, Huang Q, Ohta AT, Arai T. Bubbles in microfluidics: an all-purpose tool for micromanipulation. LAB ON A CHIP 2021; 21:1016-1035. [PMID: 33538756 DOI: 10.1039/d0lc01173h] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
In recent decades, the integration of microfluidic devices and multiple actuation technologies at the microscale has greatly contributed to the progress of related fields. In particular, microbubbles are playing an increasingly important role in microfluidics because of their unique characteristics that lead to specific responses to different energy sources and gas-liquid interactions. Many effective and functional bubble-based micromanipulation strategies have been developed and improved, enabling various non-invasive, selective, and precise operations at the microscale. This review begins with a brief introduction of the morphological characteristics and formation of microbubbles. The theoretical foundations and working mechanisms of typical micromanipulations based on acoustic, thermodynamic, and chemical microbubbles in fluids are described. We critically review the extensive applications and the frontline advances of bubbles in microfluidics, including microflow patterns, position and orientation control, biomedical applications, and development of bubble-based microrobots. We lastly present an outlook to provide directions for the design and application of microbubble-based micromanipulation tools and attract the attention of relevant researchers to the enormous potential of microbubbles in microfluidics.
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Affiliation(s)
- Yuyang Li
- Key Laboratory of Biomimetic Robots and Systems, Ministry of Education, State Key Laboratory of Intelligent Control and Decision of Complex System, Beijing Advanced Innovation Center for Intelligent Robots and Systems, School of Mechatronical Engineering, Beijing Institute of Technology, Beijing 100081, China.
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2
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Dong J, Meissner M, Faers MA, Eggers J, Seddon AM, Royall CP. Opposed flow focusing: evidence of a second order jetting transition. SOFT MATTER 2018; 14:8344-8351. [PMID: 30298898 DOI: 10.1039/c8sm00700d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We propose a novel microfluidic "opposed-flow" geometry in which the continuous fluid phase is fed into a junction in a direction opposite to the dispersed phase. This pulls out the dispersed phase into a micron-sized jet, which decays into micron-sized droplets. As the driving pressure is tuned to a critical value, the jet radius vanishes as a power law down to sizes below 1 μm. By contrast, the conventional "coflowing" junction leads to a first order jetting transition, in which the jet disappears at a finite radius of several μm, to give way to a "dripping" state, resulting in much larger droplets. We demonstrate the effectiveness of our method by producing the first microfluidic silicone oil emulsions with a sub micron particle radius, and utilize these droplets to produce colloidal clusters.
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Affiliation(s)
- Jun Dong
- H. H. Wills Physics Laboratory, University of Bristol, Bristol, BS8 1TL, UK. and Centre for Nanoscience and Quantum Information, Tyndall Avenue, Bristol, BS8 1FD, UK
| | - Max Meissner
- H. H. Wills Physics Laboratory, University of Bristol, Bristol, BS8 1TL, UK. and Centre for Nanoscience and Quantum Information, Tyndall Avenue, Bristol, BS8 1FD, UK
| | | | - Jens Eggers
- Mathematics Department, University of Bristol, BS8 1TW, Bristol, UK
| | - Annela M Seddon
- H. H. Wills Physics Laboratory, University of Bristol, Bristol, BS8 1TL, UK. and Centre for Nanoscience and Quantum Information, Tyndall Avenue, Bristol, BS8 1FD, UK and Bristol Centre for Functional Nanomaterials, University of Bristol, Bristol, BS8 1TL, UK
| | - C Patrick Royall
- H. H. Wills Physics Laboratory, University of Bristol, Bristol, BS8 1TL, UK. and Centre for Nanoscience and Quantum Information, Tyndall Avenue, Bristol, BS8 1FD, UK and Chemistry Department, University of Bristol, Bristol, BS8 1TS, UK
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do Nascimento DF, Avendaño JA, Mehl A, Moura MJB, Carvalho MS, Duncanson WJ. Flow of Tunable Elastic Microcapsules through Constrictions. Sci Rep 2017; 7:11898. [PMID: 28928386 PMCID: PMC5605504 DOI: 10.1038/s41598-017-11950-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 08/30/2017] [Indexed: 11/30/2022] Open
Abstract
We design and fabricate elastically tunable monodisperse microcapsules using microfluidics and cross-linkable polydimethylsiloxane (PDMS). The overall stiffness of the microcapsules is governed by both the thickness and cross-link ratio of the polymer shell. Flowing suspensions of microcapsules through constricted spaces leads to transient blockage of fluid flow, thus altering the flow behavior. The ability to tune microcapsule mechanical properties enables the design of elastic microcapsules that can be tailored for desired flow behavior in a broad range of applications such as oil recovery, reactor feeding, red blood cell flow and chemical targeted delivery.
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Affiliation(s)
- Débora F do Nascimento
- Department of Mechanical Engineering, Pontificia Universidade Catolica do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Jorge A Avendaño
- Department of Mechanical Engineering, Pontificia Universidade Catolica do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Ana Mehl
- Department of Mechanical Engineering, Pontificia Universidade Catolica do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Maria J B Moura
- Department of Mechanical Engineering, Pontificia Universidade Catolica do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Marcio S Carvalho
- Department of Mechanical Engineering, Pontificia Universidade Catolica do Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
| | - Wynter J Duncanson
- Department of Mechanical Engineering, Pontificia Universidade Catolica do Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
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Shih R, Lee AP. Post-Formation Shrinkage and Stabilization of Microfluidic Bubbles in Lipid Solution. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:1939-1946. [PMID: 26820229 DOI: 10.1021/acs.langmuir.5b03948] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Medical ultrasound imaging often employs ultrasound contrast agents (UCAs), injectable microbubbles stabilized by shells or membranes. In tissue, the compressible gas cores can strongly scatter acoustic signals, resonate, and emit harmonics. However, bubbles generated by conventional methods have nonuniform sizes, reducing the fraction that resonates with a given transducer. Microfluidic flow-focusing is an alternative production method which generates highly monodisperse bubbles with uniform constituents, enabling more-efficient contrast enhancement than current UCAs. Production size is tunable by adjusting gas pressure and solution flow rate, but solution effects on downstream stable size and lifetime have not been closely examined. This study therefore investigated several solution parameters, including the DSPC/DSPE-PEG2000 lipid ratio, concentration, viscosity, and preparation temperature to determine their effects on stabilization. It was found that bubble lifetime roughly correlated with stable size, which in turn was strongly influenced by primary-lipid-to-emulsifier ratio, analogous to its effects on conventional bubble yield and Langmuir-trough compressibility in existing studies. Raising DSPE-PEG2000 fraction in solution reduced bubble surface area in proportion to its reduction of lipid packing density at low compression in literature. In addition, the surface area was found to increase proportionately with lipid concentration above 2.1 mM. However, viscosities above or below 2.3-3.3 mPa·s seemed to reduce bubble size. Finally, lipid preparation at room temperature led to smaller bubbles compared to preparation near or above the primary lipid's phase transition point. Understanding these effects will further improve on postformation control over microfluidic bubble production, and facilitate size-tuning for optimal contrast enhancement.
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Affiliation(s)
- Roger Shih
- Department of Biomedical Engineering, University of California Irvine , 3406 Engineering Hall, Irvine, California 92697, United States
| | - Abraham P Lee
- Department of Biomedical Engineering, University of California Irvine , 3406 Engineering Hall, Irvine, California 92697, United States
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Chattaraj R, Mohan P, Besmer JD, Goodwin AP. Selective Vaporization of Superheated Nanodroplets for Rapid, Sensitive, Acoustic Biosensing. Adv Healthc Mater 2015; 4:1790-5. [PMID: 26084414 PMCID: PMC4556242 DOI: 10.1002/adhm.201500315] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Revised: 05/27/2015] [Indexed: 11/06/2022]
Abstract
Superheated perfluorocarbon nano-droplets exhibit promise as sensitive acoustic biosensors. Aggregation of biotin-decorated lipid-shelled droplets by streptavidin greatly increases the yield of bubbles formed by ultrasound-induced vaporization. Streptavidin is sensed down to 1 × 10(-13) m, with differentiable signal appearing in as little as two minutes, using a scalable assay without washing, processing, or development steps.
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Formation of Polymeric Hollow Microcapsules and Microlenses Using Gas-in-Organic-in-Water Droplets. MICROMACHINES 2015. [DOI: 10.3390/mi6050622] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Duncanson WJ, Kodger TE, Babaee S, Gonzalez G, Weitz DA, Bertoldi K. Microfluidic fabrication and micromechanics of permeable and impermeable elastomeric microbubbles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:3489-3493. [PMID: 25730159 DOI: 10.1021/la504843p] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We use droplet microfluidics to produce monodisperse elastomeric microbubbles consisting of gas encapsulated in a polydimethylsiloxane shell. These microbubbles withstand large, repeated deformations without rupture. We perform μN-scale compression tests on individual microbubbles and find their response to be highly dependent on the shell permeability; during deformation, the pressure inside impermeable microbubbles increases, resulting in an exponential increase in the applied force. Finite element models are used to interpret and extend these experimental results enabling the design and development of deformable microbubbles with a predictable mechanical response. Such microbubbles can be designed to repeatedly transit through the narrow constrictions found in a porous medium functioning as probes of the local pressure.
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Affiliation(s)
- Wynter J Duncanson
- †School of Engineering and Applied Sciences Cambridge, Harvard University, Cambridge, Massachusetts 02138, United States
- ‡Department of Chemical Engineering, Nazarbayev University, Astana, 010000, Kazakhstan
| | - Thomas E Kodger
- †School of Engineering and Applied Sciences Cambridge, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Sahab Babaee
- †School of Engineering and Applied Sciences Cambridge, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Grant Gonzalez
- †School of Engineering and Applied Sciences Cambridge, Harvard University, Cambridge, Massachusetts 02138, United States
| | - David A Weitz
- †School of Engineering and Applied Sciences Cambridge, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Katia Bertoldi
- †School of Engineering and Applied Sciences Cambridge, Harvard University, Cambridge, Massachusetts 02138, United States
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Quantitative analysis of spherical microbubble cavity array formation in thermally cured polydimethylsiloxane for use in cell sorting applications. Biomed Microdevices 2014; 16:55-67. [PMID: 24037662 DOI: 10.1007/s10544-013-9805-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Microbubbles are spherical cavities formed in thermally cured polydimethylsiloxane (PDMS) using the gas expansion molding technique. Microbubble cavity arrays are generated by casting PDMS over a silicon wafer mold containing arrays of deep etched pits. To be useful in various high throughput cell culture and sorting applications it is imperative that uniform micron-sized cavities can be formed over large areas (in(2)). This paper provides an in-depth quantitative analysis of the fabrication parameters that effect the microbubble cavity formation efficiency and size. These include (1) the hydrophobic coating of the mold, (2) the mold pit dimensions, (3) the spatial arrangement of the pit openings, (4) the curing temperature of PDMS pre-polymer, (5) PDMS thickness, and (6) the presence and composition of residual gas in the PDMS pre-polymer mixture. Results suggest that the principles of heterogeneous nucleation and gas diffusion govern microbubble cavity formation, and that surface tension prevents detachment of the vapor bubble that forms in the PDMS over the pit. Paramerters are defined that enable the fabrication of large format arrays with uniform cavity size over 6 in(2) with a coefficient-of-variation <10 %. The architecture of the microbubble cavity is uniquely advantageous for cell culture. Large format arrays provide a highly versatile system that can be adapted for use in various high-throughput cell sorting applications. Herein, we demonstrate the use of microbubble cavity arrays to dissect the cellular heterogeneity that exists in a tumorigenic cutaneous squamous cell carcinoma cell line at the single cell level.
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Wang WT, Chen R, Xu JH, Wang YD, Luo GS. One-step microfluidic approach for controllable production of gas-in-water-in-oil (G/W/O) double emulsions and hollow hydrogel microspheres. RSC Adv 2014. [DOI: 10.1039/c4ra01526f] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
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Abbaspourrad A, Duncanson WJ, Lebedeva N, Kim SH, Zhushma AP, Datta SS, Dayton PA, Sheiko SS, Rubinstein M, Weitz DA. Microfluidic fabrication of stable gas-filled microcapsules for acoustic contrast enhancement. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2013; 29:12352-12357. [PMID: 24066971 DOI: 10.1021/la402598p] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We introduce a facile approach for the production of gas-filled microcapsules designed to withstand high pressures. We exploit microfluidics to fabricate water-filled microcapsules that are then externally triggered to become gas-filled, thus making them more echogenic. In addition, the gas-filled microcapsules have a solid polymer shell making them resistant to pressure-induced buckling, which makes them more mechanically robust than traditional prestabilized microbubbles; this should increase the potential of their utility for acoustic imaging of porous media with high hydrostatic pressures such as oil reservoirs.
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Affiliation(s)
- Alireza Abbaspourrad
- School of Engineering and Applied Sciences and Department of Physics, Harvard University , 29 Oxford Street, Cambridge, Massachusetts 02138, United States
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Rodríguez-Rojo S, Lopes DD, Alexandre A, Pereira H, Nogueira I, Duarte C. Encapsulation of perfluorocarbon gases into lipid-based carrier by PGSS. J Supercrit Fluids 2013. [DOI: 10.1016/j.supflu.2013.05.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Hartmann KI, Nieto A, Wu EC, Freeman WR, Kim JS, Chhablani J, Sailor MJ, Cheng L. Hydrosilylated porous silicon particles function as an intravitreal drug delivery system for daunorubicin. J Ocul Pharmacol Ther 2013; 29:493-500. [PMID: 23448595 DOI: 10.1089/jop.2012.0205] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
PURPOSE To evaluate in vivo ocular safety of an intravitreal hydrosilylated porous silicon (pSi) drug delivery system along with the payload of daunorubicin (DNR). METHODS pSi microparticles were prepared from the electrochemical etching of highly doped, p-type Si wafers and an organic linker was attached to the Si-H terminated inner surface of the particles by thermal hydrosilylation of undecylenic acid. DNR was bound to the carboxy terminus of the linker as a drug-loading strategy. DNR release from hydrosilylated pSi particles was confirmed in the excised rabbit vitreous using liquid chromatography-electrospray ionization-multistage mass spectrometry. Both empty and DNR-loaded hydrosilylated pSi particles were injected into the rabbit vitreous and the degradation and safety were studied for 6 months. RESULTS The mean pSi particle size was 30×46×15 μm with an average pore size of 15 nm. Drug loading was determined as 22 μg per 1 mg of pSi particles. An ex vivo drug release study showed that intact DNR was detected in the rabbit vitreous. An in vivo ocular toxicity study did not reveal clinical or pathological evidence of any toxicity during a 6-month observation. Hydrosilylated pSi particles, either empty or loaded with DNR, demonstrated a slow elimination kinetics from the rabbit vitreous without ocular toxicity. CONCLUSIONS Hydrosilylated pSi particles can host a large quantity of DNR by a covalent loading strategy and DNR can be slowly released into the vitreous without ocular toxicity, which would appear if an equivalent quantity of free drug was injected.
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Affiliation(s)
- Kathrin I Hartmann
- Department of Ophthalmology, Jacobs Retina Center at Shiley Eye Center, University of California, San Diego, La Jolla, California 92093-0946, USA
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Peyman SA, Abou-Saleh RH, McLaughlan JR, Ingram N, Johnson BRG, Critchley K, Freear S, Evans JA, Markham AF, Coletta PL, Evans SD. Expanding 3D geometry for enhanced on-chip microbubble production and single step formation of liposome modified microbubbles. LAB ON A CHIP 2012; 12:4544-52. [PMID: 22968592 DOI: 10.1039/c2lc40634a] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Micron sized, lipid stabilized bubbles of gas are of interest as contrast agents for ultra-sound (US) imaging and increasingly as delivery vehicles for targeted, triggered, therapeutic delivery. Microfluidics provides a reproducible means for microbubble production and surface functionalisation. In this study, microbubbles are generated on chip using flow-focussing microfluidic devices that combine streams of gas and liquid through a nozzle a few microns wide and then subjecting the two phases to a downstream pressure drop. While microfluidics has successfully demonstrated the generation of monodisperse bubble populations, these approaches inherently produce low bubble counts. We introduce a new micro-spray flow regime that generates consistently high bubble concentrations that are more clinically relevant compared to traditional monodisperse bubble populations. Final bubble concentrations produced by the micro-spray regime were up to 10(10) bubbles mL(-1). The technique is shown to be highly reproducible and by using multiplexed chip arrays, the time taken to produce one millilitre of sample containing 10(10) bubbles mL(-1) was ∼10 min. Further, we also demonstrate that it is possible to attach liposomes, loaded with quantum dots (QDs) or fluorescein, in a single step during MBs formation.
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Affiliation(s)
- Sally A Peyman
- Physics and Astronomy, University of Leeds, Woodhouse Lane, Leeds, LS2 9JT, UK
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Hashmi A, Yu G, Reilly-Collette M, Heiman G, Xu J. Oscillating bubbles: a versatile tool for lab on a chip applications. LAB ON A CHIP 2012; 12:4216-27. [PMID: 22864283 DOI: 10.1039/c2lc40424a] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
With the fast development of acoustic and multiphase microfluidics in recent years, oscillating bubbles have drawn more-and-more attention due to their great potential in various Lab on a Chip (LOC) applications. Many innovative bubble-based devices have been explored in the past decade. In this article, we first briefly summarize current understanding of the physics of oscillating bubbles, and then critically summarize recent advancements, including some of our original work, on the applications of oscillating bubbles in microfluidic devices. We intend to highlight the advantages of using oscillating bubbles along with the challenges that accompany them. We believe that these emerging studies on microfluidic oscillating bubbles will be revolutionary to the development of next-generation LOC technologies.
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Affiliation(s)
- Ali Hashmi
- Mechanical Engineering, Washington State University, Vancouver, USA
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Wang AB, Lin IC, Hsieh YW, Shih WP, Wu GW. Effective pressure and bubble generation in a microfluidic T-junction. LAB ON A CHIP 2011; 11:3499-507. [PMID: 21879103 DOI: 10.1039/c1lc20240e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
To improve the existing trial-and-error process in designing a microfluidic T-junction, a systematic study of the geometrical (mainly the channel length) effects on the generated bubbly/slug flow was conducted to figure out basic design guidelines based on experimental and theoretical analyses. A driving system with dual constant pressure sources, instead of the commonly used dual constant volume-rate sources (such as two syringe pumps), was chosen in this study. The newly proposed effective pressure ratio (P(e)*) has revealed its advantages in excluding the surface tension effect of fluids. All the data of generated bubbly/slug flow for a given geometry collapse excellently into the same relationship of void fraction and effective pressure ratio. This relationship is insensitive to the liquid viscosity and the operation range is strongly affected by the geometrical effect, i.e., the channel length ratio of downstream to total equivalent length of the main channel in a T-junction chip. As to the theoretical design and analysis of gas-liquid-flow characteristics in a microfluidic T-junction, which is still sporadic in the literature, the proposed semi-empirical model has successfully predicted the operation boundaries and the output flow rate of bubbly/slug flow of different investigated cases and demonstrated its usability.
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Affiliation(s)
- An-Bang Wang
- Institute of Applied Mechanics, National Taiwan University, Taipei, Taiwan.
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Liu K, Wang MW, Lin WY, Phung DL, Girgis MD, Wu AM, Tomlinson JS, Shen CKF. Molecular Imaging Probe Development using Microfluidics. Curr Org Synth 2011; 8:473-487. [PMID: 22977436 DOI: 10.2174/157017911796117205] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
In this manuscript, we review the latest advancement of microfluidics in molecular imaging probe development. Due to increasing needs for medical imaging, high demand for many types of molecular imaging probes will have to be met by exploiting novel chemistry/radiochemistry and engineering technologies to improve the production and development of suitable probes. The microfluidic-based probe synthesis is currently attracting a great deal of interest because of their potential to deliver many advantages over conventional systems. Numerous chemical reactions have been successfully performed in micro-reactors and the results convincingly demonstrate with great benefits to aid synthetic procedures, such as purer products, higher yields, shorter reaction times compared to the corresponding batch/macroscale reactions, and more benign reaction conditions. Several 'proof-of-principle' examples of molecular imaging probe syntheses using microfluidics, along with basics of device architecture and operation, and their potential limitations are discussed here.
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Affiliation(s)
- Kan Liu
- College of Electronics and Information Engineering, Wuhan Textile University, Wuhan, 430073, China
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Saleem Q, Liu B, Gradinaru CC, Macdonald PM. Lipogels: Single-Lipid-Bilayer-Enclosed Hydrogel Spheres. Biomacromolecules 2011; 12:2364-74. [DOI: 10.1021/bm200266z] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Qasim Saleem
- Department of Chemistry and ‡Department of Physics, University of Toronto, and §Department of Chemical and Physical Sciences, University of Toronto Mississauga, 3359 Mississauga Road North, Mississauga, Ontario, Canada L5L 1C6
| | - Baoxu Liu
- Department of Chemistry and ‡Department of Physics, University of Toronto, and §Department of Chemical and Physical Sciences, University of Toronto Mississauga, 3359 Mississauga Road North, Mississauga, Ontario, Canada L5L 1C6
| | - Claudiu C. Gradinaru
- Department of Chemistry and ‡Department of Physics, University of Toronto, and §Department of Chemical and Physical Sciences, University of Toronto Mississauga, 3359 Mississauga Road North, Mississauga, Ontario, Canada L5L 1C6
| | - Peter M. Macdonald
- Department of Chemistry and ‡Department of Physics, University of Toronto, and §Department of Chemical and Physical Sciences, University of Toronto Mississauga, 3359 Mississauga Road North, Mississauga, Ontario, Canada L5L 1C6
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Electrohydrodynamic preparation of polymeric drug-carrier particles: Mapping of the process. Int J Pharm 2011; 404:110-5. [DOI: 10.1016/j.ijpharm.2010.11.014] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2010] [Revised: 11/05/2010] [Accepted: 11/09/2010] [Indexed: 11/20/2022]
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Nakatsuka MA, Lee JH, Nakayama E, Hung AM, Hsu MJ, Mattrey RF, Esener SC, Cha JN, Goodwin AP. Facile One-Pot Synthesis of Polymer-Phospholipid Composite Microbubbles with Enhanced Drug Loading Capacity for Ultrasound-Triggered Therapy. SOFT MATTER 2011; 2011:1656-1659. [PMID: 21799701 PMCID: PMC3143006 DOI: 10.1039/c0sm01131b] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
This paper reports the one-pot synthesis of perfluorocarbon microbubbles with crosslinked shells of poly(acrylic acid) and phospholipid that boast excellent ultrasound contrast enhancement, enhanced loading capacity, and the ability to retain or release their contents through variation in the level of ultrasound exposure.
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Affiliation(s)
- Matthew A. Nakatsuka
- University of California, San Diego, Department of Nanoengineering, 9500 Gilman Dr. #0048, La Jolla, CA 92093, USA
| | - Joo Hye Lee
- University of California, San Diego, Department of Nanoengineering, 9500 Gilman Dr. #0048, La Jolla, CA 92093, USA
| | - Emi Nakayama
- University of California, San Diego, Department of Nanoengineering, 9500 Gilman Dr. #0048, La Jolla, CA 92093, USA
| | - Albert M. Hung
- University of California, San Diego, Department of Nanoengineering, 9500 Gilman Dr. #0048, La Jolla, CA 92093, USA
| | - Mark J. Hsu
- University of California, San Diego, Department of Electrical and Computer Engineering, 9500 Gilman Dr. #0407, La Jolla, CA 92093, USA
| | - Robert F. Mattrey
- University of California, San Diego, Department of Radiology, 410 Dickinson St., San Diego, CA 92103
| | - Sadik C. Esener
- University of California, San Diego, Department of Nanoengineering, 9500 Gilman Dr. #0048, La Jolla, CA 92093, USA
- University of California, San Diego, Department of Electrical and Computer Engineering, 9500 Gilman Dr. #0407, La Jolla, CA 92093, USA
- , ,
| | - Jennifer N. Cha
- University of California, San Diego, Department of Nanoengineering, 9500 Gilman Dr. #0048, La Jolla, CA 92093, USA
- , ,
| | - Andrew P. Goodwin
- University of California, San Diego, Department of Nanoengineering, 9500 Gilman Dr. #0048, La Jolla, CA 92093, USA
- , ,
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