Thermal micro pumps for a loop-type micro channel

Yokoyama, Y.; Takeda, Munehisa; Umemoto, Toshiyuki; Ogushi, Tetsuro

doi:10.1016/j.sna.2003.10.012

Cited by 30 publications

(13 citation statements)

References 1 publication

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“…Electric micropumps utilize electrokinetics (Gascoyne and Vykoukal, 2002), piezoelectric (Van Lintel et al, 1988, Nisar et al, 2008) or magnetohydrodynamics (Zhong et al, 2002). While mechanical micropumps utilize hydrodynamic pressure (Xu et al, 2001), thermal expansion (Yokoyama et al, 2004), osmotic pressure (Salimi-Moosavi et al, 1997), or other transducer or induced forces. Electrocapillary, an important electrokinetic pumping mechanism, boosted the development of lab-on-chip devices (Harrison et al, 1992, Li and Harrison, 1997, Manz et al, 1991).…”

Section: Applications Of Biomems Devices In Analytical Techniquesmentioning

confidence: 99%

RETRACTED: Biomedical microelectromechanical systems (BioMEMS): Revolution in drug delivery and analytical techniques

Jivani¹,

Lakhtaria²,

Patadiya³

et al. 2016

Saudi Pharmaceutical Journal

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Advancement in microelectromechanical system has facilitated the microfabrication of polymeric substrates and the development of the novel class of controlled drug delivery devices. These vehicles have specifically tailored three dimensional physical and chemical features which together, provide the capacity to target cell, stimulate unidirectional controlled release of therapeutics and augment permeation across the barriers. Apart from drug delivery devices microfabrication technology's offer exciting prospects to generate biomimetic gastrointestinal tract models. BioMEMS are capable of analysing biochemical liquid sample like solution of metabolites, macromolecules, proteins, nucleic acid, cells and viruses. This review summarized multidisciplinary application of biomedical microelectromechanical systems in drug delivery and its potential in analytical procedures.

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Section: Applications Of Biomems Devices In Analytical Techniquesmentioning

confidence: 99%

RETRACTED: Biomedical microelectromechanical systems (BioMEMS): Revolution in drug delivery and analytical techniques

Jivani¹,

Lakhtaria²,

Patadiya³

et al. 2016

Saudi Pharmaceutical Journal

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“…For example, commercially available micropumps have successfully employed these passive check valves for their piezoelectrically actuated micropumps (from thinXXS Microtechnology, Zweibrücken, Germany and Star Micronics, Shizuoka, Japan). In addition, passive microvalves using capillary effects are sometimes useful for microfluidic applications since autonomous and spontaneous valving can be realized due to the geometry [215][216][217][218][219][220][221][222][223] and surface properties [224,225] of the microchannels. These passive capillary valves are recommended to block and pass fluidic flows without sealing at elevated temperatures.…”

Section: Discussionmentioning

confidence: 99%

A review of microvalves

Oh¹,

Ahn²

2006

J. Micromech. Microeng.

750

497

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This review gives a brief overview of microvalves, and focuses on the actuation mechanisms and their applications. One of the stumbling blocks for successful miniaturization and commercialization of fully integrated microfluidic systems was the development of reliable microvalves. Applications of the microvalves include flow regulation, on/off switching and sealing of liquids, gases or vacuums. Microvalves have been developed in the form of active or passive microvalves employing mechanical, non-mechanical and external systems. Even though great progress has been made during the last 20 years, there is plenty of room for further improving the performance of existing microvalves.

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“…The outer radius of the flow capillary is denoted as r 3 . Failure of the pump will occur at this junction when the back pressure (pressure head) exceeds ∆P j .…”

Section: Working Mechanismmentioning

confidence: 99%

“…Bubble-driven liquid pumping in microchannels has been proven feasible and advantageous for many applications, including micro total analysis systems [1,2], microelectronic cooling [3], and chemical micro-reactors such as micro direct methanol fuel cells (μDMFCs) [4,5]. By replacing mechanical moving parts with transient gas bubbles, this category of micropumps have shown reduced fabrication cost and improved reliability.…”

Section: Introductionmentioning

confidence: 99%