Application of Optical pH Sensors in the Microfluidic Free-flow Isoelectric Focusing of Biomolecules

Poehler, Elisabeth; Herzog, Christin; Pfeiffer, Simon A.; Lotter, Carsten; Peretzki, Andrea J.; Aigner, Daniel; Mayr, Torsten; Beckert, Erik; Nagl, Stefan

doi:10.1016/j.proeng.2015.08.603

Cited by 2 publications

(2 citation statements)

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“…They can be deployed as inexpensive single-use sensors, 2 can be read out remotely with optical fibers, they are not influenced by electromagnetic interferences and can be manufactured in a wide variety of formats. For instance, optical pH sensors are available as larger sensor films for imaging, [5][6][7] as small spots integrated in microfluidic devices [8][9][10][11][12] or in microtiter plates, 13 on tapered fibers with only 8-140 µm tip diameter 14,15 or in the form of nanoparticles. 16,17 Materials utilized for optical pH sensing include fluorescent indicators belonging to different chromophore classes (fluoresceins, 18 rhodamines, 19,20 perylenes, 21,22 1,4-diketopyrrolo-pyrroles, 23 HPTS, 24,25 BODIPYs [26][27][28][29][30] and aza-BODIPYs).…”

Section: Introductionmentioning

confidence: 99%

Near-infrared fluorescent aza-BODIPY dyes for sensing and imaging of pH from the neutral to highly alkaline range

Staudinger

Breininger

Klimant

et al. 2019

Analyst

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Section: Introductionmentioning

confidence: 99%

Near-infrared fluorescent aza-BODIPY dyes for sensing and imaging of pH from the neutral to highly alkaline range

Staudinger

Breininger

Klimant

et al. 2019

Analyst

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“…They are required for developing micro-fluidic devices such as reactors, mixers, ejectors, cell selectors, and others [11][12][13][14]. The patterning is also required for developing optical micro-components such as lens and prism arrays, and others [15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Improvement of Patterning Homogeneity in a Field of Projection Exposure System Using a Gradient-Index Lens Array

Horiuchi

Sato

Kobayashi

2017

J. Photopol. Sci. Technol.

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Pattern width homogeneity in an exposure field of gradient-index (GRIN) lens array was greatly improved by changing the sub-scan method for averaging the pattern widths. By investigating the pattern width distribution in the exposure field, it was clarified that the parts, where the printed patterns were degraded and pattern widths were notably changed, appeared as striped lines. It was supposed that the striped abnormal pattern-width change was caused by the extra exposures for the times when the sub-scan stage was stopped at both the sub-scan ends for turning the scan direction. For this reason, sub-scan length was vastly extended, and the sub-scan stage was turned at the both ends after all the patterns on a reticle passed over the actually used parts of a GRIN lens array. By this method, no patterns were exposed and projected on a wafer while the sub-scan stage was stopped for turning at the both ends. As a result, 15-µm L&S patterns were almost homogeneously printed in the exposure field within a variation range of ±6%.

show abstract

Application of Optical pH Sensors in the Microfluidic Free-flow Isoelectric Focusing of Biomolecules

Cited by 2 publications

References 4 publications

Near-infrared fluorescent aza-BODIPY dyes for sensing and imaging of pH from the neutral to highly alkaline range

Near-infrared fluorescent aza-BODIPY dyes for sensing and imaging of pH from the neutral to highly alkaline range

Improvement of Patterning Homogeneity in a Field of Projection Exposure System Using a Gradient-Index Lens Array

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