Microdroplet Actuation via Light Line Optoelectrowetting (LL-OEW)
Meanwhile, electrowetting-on-dielectric (EWOD) is a well-known phenomenon, even often exploited in active micro-optics to change the curvature of microdroplet lenses or in analytical chemistry with digital microfluidics (DMF, lab on a chip 2.0) to move/actuate microdroplets. Optoelectrowetting (OEW)...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | International Journal of Analytical Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2021/3402411 |
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| author | Christoph Doering Johannes Strassner Henning Fouckhardt |
| author_facet | Christoph Doering Johannes Strassner Henning Fouckhardt |
| author_sort | Christoph Doering |
| collection | DOAJ |
| description | Meanwhile, electrowetting-on-dielectric (EWOD) is a well-known phenomenon, even often exploited in active micro-optics to change the curvature of microdroplet lenses or in analytical chemistry with digital microfluidics (DMF, lab on a chip 2.0) to move/actuate microdroplets. Optoelectrowetting (OEW) can bring more flexibility to DMF because in OEW, the operating point of the lab chip is locally controlled by a beam of light, usually impinging onto the chip perpendicularly. As opposed to pure EWOD, for OEW, none of the electrodes has to be structured, which makes the chip design and production technology simpler; the path of any actuated droplet is determined by the movement of the light spot. However, for applications in analytical chemistry, it would be helpful if the space both below as well as that above the lab chip were not obstructed by any optical components and light sources. Here, we report on the possibility to actuate droplets by laser light beams, which traverse the setup parallel to the chip surface and inside the OEW layer sequence. Since microdroplets are grabbed by this surface-parallel, nondiverging, and nonexpanded light beam, we call this principle “light line OEW” (LL-OEW). |
| format | Article |
| id | doaj-art-cb930afe90f646a2bd1bf0df99b3ec2f |
| institution | DOAJ |
| issn | 1687-8779 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Analytical Chemistry |
| spelling | doaj-art-cb930afe90f646a2bd1bf0df99b3ec2f2025-08-20T03:23:38ZengWileyInternational Journal of Analytical Chemistry1687-87792021-01-01202110.1155/2021/3402411Microdroplet Actuation via Light Line Optoelectrowetting (LL-OEW)Christoph Doering0Johannes Strassner1Henning Fouckhardt2Integrated Optoelectronics and Micro Optics Research GroupIntegrated Optoelectronics and Micro Optics Research GroupIntegrated Optoelectronics and Micro Optics Research GroupMeanwhile, electrowetting-on-dielectric (EWOD) is a well-known phenomenon, even often exploited in active micro-optics to change the curvature of microdroplet lenses or in analytical chemistry with digital microfluidics (DMF, lab on a chip 2.0) to move/actuate microdroplets. Optoelectrowetting (OEW) can bring more flexibility to DMF because in OEW, the operating point of the lab chip is locally controlled by a beam of light, usually impinging onto the chip perpendicularly. As opposed to pure EWOD, for OEW, none of the electrodes has to be structured, which makes the chip design and production technology simpler; the path of any actuated droplet is determined by the movement of the light spot. However, for applications in analytical chemistry, it would be helpful if the space both below as well as that above the lab chip were not obstructed by any optical components and light sources. Here, we report on the possibility to actuate droplets by laser light beams, which traverse the setup parallel to the chip surface and inside the OEW layer sequence. Since microdroplets are grabbed by this surface-parallel, nondiverging, and nonexpanded light beam, we call this principle “light line OEW” (LL-OEW).http://dx.doi.org/10.1155/2021/3402411 |
| spellingShingle | Christoph Doering Johannes Strassner Henning Fouckhardt Microdroplet Actuation via Light Line Optoelectrowetting (LL-OEW) International Journal of Analytical Chemistry |
| title | Microdroplet Actuation via Light Line Optoelectrowetting (LL-OEW) |
| title_full | Microdroplet Actuation via Light Line Optoelectrowetting (LL-OEW) |
| title_fullStr | Microdroplet Actuation via Light Line Optoelectrowetting (LL-OEW) |
| title_full_unstemmed | Microdroplet Actuation via Light Line Optoelectrowetting (LL-OEW) |
| title_short | Microdroplet Actuation via Light Line Optoelectrowetting (LL-OEW) |
| title_sort | microdroplet actuation via light line optoelectrowetting ll oew |
| url | http://dx.doi.org/10.1155/2021/3402411 |
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