A chemical micro analysis system for the measurement of pressure, flow rate, temperature, conductivity, UV-absorption and fluorescence

Norlin, P.; Öhman, Ove; Ekström, Björn; Forssen, L.

doi:10.1016/s0925-4005(98)00106-3

Cited by 38 publications

(26 citation statements)

References 7 publications

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“…Early flow-sensor construction attempts included miniaturization of well-established macroflow sensing principles and their application to m-TAS. In most instances, the flow sensors were in physical contact with the media to envisage the flow [141][142][143][144][145]. Others utilized heat transfer flow measurements by gas flow or a TOF-type measurement with a locally initiated temperature pulse [142,143].…”

Section: Flow Measurementmentioning

confidence: 99%

“…In most instances, the flow sensors were in physical contact with the media to envisage the flow [141][142][143][144][145]. Others utilized heat transfer flow measurements by gas flow or a TOF-type measurement with a locally initiated temperature pulse [142,143]. Another type of sensor was based on pressure drop measurement over a well-characterized hydraulic resistance [141].…”

Section: Flow Measurementmentioning

confidence: 99%

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New advances in microchip fabrication for electrochromatography

Szekeres

Guttman

2005

Electrophoresis

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There is a great demand in separation technologies for faster and more effective analysis processes. Miniaturization is a suitable technique for satisfying this demand as reduction in size gives increased separation speed with higher efficiency. CEC is an electric-field-mediated separation technique where the liquid flow is generated by the electric field itself. The main advantage of using electric field over pressure for flow generation is the flat flow profile of the EOF; thus, CEC is one of the best candidates to construct a novel and high-efficiency microanalytical device. The aim of the present paper is to review the basic fabrication and bonding principles, as well as connection and system integration options for microfluidics-based electrochromatography. The physical structure and fluidic channel formation are critically evaluated, including glass microstructuring and fusion bonding. Recent developments in nanoflow measurements and the application of various flow control units are also extensively discussed.

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Section: Flow Measurementmentioning

confidence: 99%

Section: Flow Measurementmentioning

confidence: 99%

New advances in microchip fabrication for electrochromatography

Szekeres

Guttman

2005

Electrophoresis

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“…In any case, it is important to select an optimum sensor depending on the substance for measure. Research is being carried out to integrate many different types of microsensors into a microflow cell by micromachining [31].…”

Section: Detection Methodsmentioning

confidence: 99%

Micro total analysis system (?TAS)

Shoji

1999

Electron. Comm. Jpn. Pt. II

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“…Typical measuring parameters are pH value, ion‐ and analyte concentration, electrolyte conductivity, temperature, etc. . Often, these sensor arrays integrate a large number of single‐function sensors, which are based on different transducer structures and a variety of sensitive materials .…”

Section: Introductionmentioning

confidence: 99%

Multi‐parameter sensing using high‐k oxide of barium strontium titanate

Huck

Poghossian

Bäcker

et al. 2015

Physica Status Solidi (a)

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High‐k perovskite oxide of barium strontium titanate (BST) represents a very attractive multi‐functional transducer material for the development of (bio‐)chemical sensors. In this work, a Si‐based sensor chip containing Pt interdigitated electrodes covered with a thin BST layer (485 nm) has been developed for multi‐parameter chemical sensing. The chip has been applied for the contactless measurement of the electrolyte conductivity, the detection of adsorbed charged macromolecules (positively charged polyelectrolytes of polyethylenimine) and the concentration of hydrogen peroxide (H2O2) vapor. The experimental results of functional testing of individual sensors are presented. The mechanism of the BST sensitivity to charged polyelectrolytes and H2O2 vapor has been proposed and discussed.

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A chemical micro analysis system for the measurement of pressure, flow rate, temperature, conductivity, UV-absorption and fluorescence

Cited by 38 publications

References 7 publications

New advances in microchip fabrication for electrochromatography

New advances in microchip fabrication for electrochromatography

Micro total analysis system (?TAS)

Multi‐parameter sensing using high‐k oxide of barium strontium titanate

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