Snap-through in Graphene Nanochannels: With Application to Fluidic Control

2020 ◽  
Author(s):  
Shuping Jiao ◽  
Mingchao Liu
Keyword(s):  
Fluidic Control

Fluidic Control of Asymmetric Forces on a Body of Revolution

2008 ◽  
Author(s):  
Philip Abramson ◽  
Bojan Vukasinovic ◽  
Ari Glezer
Keyword(s):  
Body Of Revolution ◽  
Fluidic Control

Fluidic Control of Nacelle Inlet Flow in Crosswind

2020 ◽  
Author(s):  
Derek A. Nichols ◽  
Bojan Vukasinovic ◽  
Ari Glezer ◽  
Matthew DeFore ◽  
Bradley Rafferty
Keyword(s):  
Inlet Flow ◽  
Fluidic Control

Dual-bell nozzle for space launchers with fluidic control of transition

2021 ◽  
Author(s):  
Andrea Ferrero ◽  
Antonietta Conte ◽  
Emanuele Martelli ◽  
Francesco Nasuti ◽  
Dario Pastrone
Keyword(s):  
Fluidic Control ◽  
Dual Bell

Ultrasonically Activated Diffusion Bonding for Fluidic Control Assembly

1979 ◽  
Author(s):  
Howard A. Scheetz ◽  
Paul L. Coppa ◽  
Janet Devine
Keyword(s):  
Diffusion Bonding ◽  
Control Assembly ◽  
Fluidic Control

Picoliter liquid handling at gas/liquid interface by surface and geometry control in a micro-nanofluidic device

2021 ◽  
Author(s):  
Kyojiro Morikawa ◽  
Shin-ichi Murata ◽  
Y Kazoe ◽  
Kazuma Mawatari ◽  
Takehiko Kitamori
Keyword(s):  
Surface Tension ◽  
Single Cell ◽  
Single Cell Analysis ◽  
Cell Lysis ◽  
Fused Silica ◽  
Liquid Interface ◽  
Nanofluidic Devices ◽  
Fluidic Control ◽  
Lysis Buffer ◽  
Nanofluidic Device

Abstract In micro- and nanofluidic devices, highly precise fluidic control is essential. Conventional mechanical valves in microchannels and nanochannels have size limitations, whereas hydrophobic (Laplace) valves are generally difficult to use for low-surface-tension liquids. In the present study, we developed a method for handling picoliter volumes of low-surface-tension liquids in a micro-nanofluidic device. The proposed Laplace valve is based on the pinning effect. A fused silica micro-nanofluidic device that includes a picoliter chamber whose geometry was designed to induce capillary pinning was designed and fabricated. The measured Laplace pressure of a lysis buffer (surfactant) was consistent with the calculated pressure, indicating successful fabrication and hydrophobic surface modification. The working principle of the Laplace valve was verified. The Laplace valve maintained the lysis buffer at the gas/liquid interface for 60 min, which is sufficiently long for cell lysis operations. Finally, replacement of liquids in the picoliter chamber using the valve was demonstrated. The proposed method will contribute to basic technologies for fluidic control in micro- and nanofluidic devices, and the proposed Laplace valve can be used for low-surface-tension liquids. In addition, the developed valve and picoliter chamber can be utilized for the interface in single-cell lysis, which will facilitate the development of single-cell analysis devices.

A smartphone fluorescence imaging-based mobile biosensing system integrated with a passive fluidic control cartridge for minimal user intervention and high accuracy

Lab on a Chip ◽  
2019 ◽  
Vol 19 (8) ◽  
pp. 1502-1511 ◽  
Author(s):  
Won-Il Lee ◽  
Younghyeon Park ◽  
Jaemin Park ◽  
Sajal Shrivastava ◽  
Young-Min Son ◽  
...  
Keyword(s):  
Fluorescence Imaging ◽  
High Accuracy ◽  
Fluidic Control ◽  
Biosensing System ◽  
User Intervention ◽  
Minimal User Intervention

A biosensor with minimal user interventions and high accuracy.

scholarly journals Microfluidic Tool Box as Technology Platform for Hand-Held Diagnostics

2005 ◽  
Vol 51 (10) ◽  
pp. 1923-1932 ◽  
Author(s):  
Michael J Pugia ◽  
Gert Blankenstein ◽  
Ralf-Peter Peters ◽  
James A Profitt ◽  
Klaus Kadel ◽  
...  
Keyword(s):  
Point Of Care ◽  
Low Cost ◽  
Optical Signal ◽  
Control Flow ◽  
Separation Membranes ◽  
Liquid Storage ◽  
Enzyme Substrates ◽  
Fluidic Control ◽  
Multistep Reactions ◽  
Moisture Vapor

Abstract Background: Use of microfluidics in point-of-care testing (POCT) will require on-board fluidics, self-contained reagents, and multistep reactions, all at a low cost. Disposable microchips were studied as a potential POCT platform. Methods: Micron-sized structures and capillaries were embedded in disposable plastics with mechanisms for fluidic control, metering, specimen application, separation, and mixing of nanoliter to microliter volumes. Designs allowed dry reagents to be on separate substrates and liquid reagents to be added. Control of surface energy to ±5 dyne/cm2 and mechanical tolerances to ≤1 μm were used to control flow propulsion into adsorptive, chromatographic, and capillary zones. Fluidic mechanisms were combined into working examples for urinalysis, blood glucose, and hemoglobin A1c testing using indicators (substances that react with analyte, such as dyes, enzyme substrates, and diazonium salts), catalytic reactions, and antibodies as recognition components. Optical signal generation characterized fluid flow and allowed detection. Results: We produced chips that included capillary geometries from 10 to 200 μm with geometries for stopping and starting the flow of blood, urine, or buffer; vented chambers for metering and splitting 100 nL to 30 μL; specimen inlets for bubble-free specimen entry and containment; capillary manifolds for mixing; microstructure interfaces for homogeneous transfer into separation membranes; miniaturized containers for liquid storage and release; and moisture vapor barrier seals for easy use. Serum was separated from whole blood in <10 s. Miniaturization benefits were obtained at 10–200 μm. Conclusion: Disposable microchip technology is compatible with conventional dry-reagent technology and allows a highly compact system for complex assay sequences with minimum manual manipulations and simple operation.

Microfluidic chip with movable layers for the manipulation of biochemicals

Lab on a Chip ◽  
2018 ◽  
Vol 18 (13) ◽  
pp. 1867-1874 ◽  
Author(s):  
Islam Seder ◽  
Dong-Min Kim ◽  
Sang-Hyun Hwang ◽  
Heungsup Sung ◽  
Dong-Eun Kim ◽  
...  
Keyword(s):  
Surface Tension ◽  
Microfluidic Chip ◽  
Fluidic Control

We present a chip with movable top and bottom layers that exploits surface tension in solutions for fluidic control and biomolecule collection.

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