Difference between revisions of "Team:Paris Bettencourt/Practices/DILambda"
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+ | 2/ Instructables (Figure 2) gives example: “An Arduino powered microplate spectrophotometer”. This 96 well plate reader is another design inspiration for us.</p> | ||
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<p class="caption"><b>Figure 2:</b> An Arduino powered microplate spectrophotometer, from Instructables.</p> | <p class="caption"><b>Figure 2:</b> An Arduino powered microplate spectrophotometer, from Instructables.</p> | ||
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+ | 3/ Another DIY solution came to us in the Journal of Marine Biology. It has a double channel, and it intended to measure pH with an indicator. The data looks great, but we weren’t able to access the source files. Source: Yang et al. (2014). "Seawater pH measurements in the field: A DIY photometer with 0.01 unit pH accuracy". Marine Chemistry. Volume 160, Pages 75–81.</p> | ||
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<p class="caption"><b>Figure 3:</b> DIY spectrophotometer for pH test from the Marine Chemistry journal.</p> | <p class="caption"><b>Figure 3:</b> DIY spectrophotometer for pH test from the Marine Chemistry journal.</p> | ||
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− | + | 4/ The last example here comes from another fellow iGEM team: iGEM Aachen 2014. Its design is somewhat similar to DI-lambda. They also measured fluorescence. We believe that our design can improve the overall accuracy.</p> | |
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+ | Overall, while there are very promising projects, it looks like they most of them have been abandoned at early stages, after the initial limited success. The PublicLab spectrometer stands out here, has build instructions, is open-source, and can be purchased as a kit.</p> | ||
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All this means that DI-lambda is not always able to replace a traditional spectrophotometer, but works great for a majority of biological applications.</p> | All this means that DI-lambda is not always able to replace a traditional spectrophotometer, but works great for a majority of biological applications.</p> | ||
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+ | The design files are available on Github: https://github.com/lopenlab/OSS-Spectrophotometer/ | ||
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+ | <h2>Accuracy</h2> | ||
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+ | We put a lot of time into calibrating our spectrophotometer. After tuning parameters, such as the distance between the LED, the sensor, and the cuvette, and the diameter of the pinhole through which the light has to pass, we achieve results that are virtually identical to our most reliable laboratory spectrophotometer. | ||
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+ | <img src="https://static.igem.org/mediawiki/2015/4/4c/DI-Lambda_comparision.png" style="width: 100%"> | ||
+ | <p class="caption"><b>Figure 6:</b>Comparision between DI-Lambda and UVline 9100</p> | ||
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<h2>Workshops</h2> | <h2>Workshops</h2> | ||
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<img src="https://static.igem.org/mediawiki/2015/7/7e/ParisBettencourt_juanma03.jpg" style="width: 100%"> | <img src="https://static.igem.org/mediawiki/2015/7/7e/ParisBettencourt_juanma03.jpg" style="width: 100%"> | ||
− | <p class="caption"><B>Figure | + | <p class="caption"><B>Figure 7:</b> DI-lambda Luna. It is a version designed specifically for our workshop at the NightScience 2015 conference held at the Center for Research and Interdisciplinarity in Paris. Largely based on the test rig model, with some added elegance. It is easy to build, and can be used for Do-It-yourself workshops. Search on github to get the complete design! External links are not permitted on wiki.</p> |
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<img src="https://static.igem.org/mediawiki/2015/0/08/ParisBettencourt_juanma09.jpg" style="width: 100%"> | <img src="https://static.igem.org/mediawiki/2015/0/08/ParisBettencourt_juanma09.jpg" style="width: 100%"> | ||
− | <p class="caption"><p>Figure | + | <p class="caption"><p>Figure 8:</b> DI-lambda spectrophotometers built in a workshop with UCL, Birkbeck and London Hackerspace iGEM teams organized by UCL.</p> |
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<h2>What is next?</h2> | <h2>What is next?</h2> | ||
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We are planning to make this tool available to more people and be able to mass produce it, keeping a cheap price and simple design. The interesting features of this tool are the low price and the ease to hack it, tune it to a specific need.</p> | We are planning to make this tool available to more people and be able to mass produce it, keeping a cheap price and simple design. The interesting features of this tool are the low price and the ease to hack it, tune it to a specific need.</p> | ||
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Latest revision as of 03:59, 19 September 2015