Fluid delivery methods
US-2024408593-A1 · Dec 12, 2024 · US
Microfluidic absorption cell
US9025152B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9025152-B2 |
| Application number | US-201113805806-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 4, 2011 |
| Priority date | Feb 4, 2010 |
| Publication date | May 5, 2015 |
| Grant date | May 5, 2015 |
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Abstract
Official abstract text for this publication.
An absorption cell for microfluidic chemical analysis made from tinted or colored polymers, for example polymethylmethacrylate (PMMA), in which microfluidic channels are cut. Light is coupled into the absorption cell via two windows (typically 200 um thick) that are retained at either end of the channel. Absorption is measured using a light source, such as a light emitting diode (LED) and a photodiode butted against the windows. Spurious scattered and/or reflected light is absorbed by the colored polymer over the length of the measurement cell, while very little light loss occurs at the coupling windows.
First claim
Opening claim text (preview).
The invention claimed is: 1. An absorption cell for measuring absorption of a fluid analyte at a sensing wavelength, or range of sensing wavelengths, by exposing the analyte to probe light of the sensing wavelength or sensing wavelength range, the absorption cell comprising: a microfluidic sensing channel having first and second ends so as to provide a fluid path for the analyte as well as an optical path for the probe light; first and second windows adjacent the first and secon…
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Classifications
- B01L3/502715Primary
Operations & Transport · mapped topic
Operations & Transport · mapped topic
- G01N21/0303Primary
Physics · mapped topic
Physics · mapped topic
Physics · mapped topic
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Frequently asked questions
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- What does patent US9025152B2 cover?
- An absorption cell for microfluidic chemical analysis made from tinted or colored polymers, for example polymethylmethacrylate (PMMA), in which microfluidic channels are cut. Light is coupled into the absorption cell via two windows (typically 200 um thick) that are retained at either end of the channel. Absorption is measured using a light source, such as a light emitting diode (LED) and a pho…
- Who is the assignee on this patent?
- Floquet Cedric Florian Aymeric, Morgan Hywel, Sieben Vincent Joseph, and 3 more
- What technology area does this patent fall under?
- Primary CPC classification B01L3/502715. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue May 05 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).