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Version 3


























Version 4



From thingiverse pages:

This spectrometer is a scientific tool that straps onto an Android or iOS phone, tablet, or any camera capable of focusing very close (macro-mode) and allows you to collect spectra. Why would you want one? You can use it to identify the elemental composition of things (light bulbs, olive oil, beer, etc) based on the colors of light they emit. You can even use it to monitor your home brewing progress (http://bit.ly/Xyor6B).

http://www.thingiverse.com/thing:49934 (version 3)

http://www.thingiverse.com/thing:125428 (version 4)



Here is video describing their idea and scenarios for using DIY spectrometer:




They had a successful Kickstarter campaign:

http://www.kickstarter.com/projects/jywarren/public-lab-diy-spectrometry-kit


Spectral workbench is a place to archive, share, and interpret spectral data.

http://spectralworkbench.org/





Different model of 3d printed spectrometer:

http://diy3dprinting.blogspot.com/2013/09/tricorder-project-3d-printable.html

From the Tricorder project comes small 3d printable DYI science instrument.


























From project website:

The prototype spectrograph is an experiment in low-cost design, and is almost entirely 3D printed using ABS plastic on an inexpensive desktop 3D printer (such as a Makerbot, though I used an ORD Bot Hadron). I have much more experience designing electronics than I do designing optical systems, and so the spectrograph is designed to be swappable/upgradable as newer designs come to pass (and I expect it to go throught a few iterations). This first spectrograph design has a 3D printed slit, and uses an inexpensive 1000-line/mm diffraction grating of the kind you can find on diffraction grating slides for classroom experiments. I read a paper a while ago on using deconvolution to post-process the data from slit spectrometers and basically sharpen the point-spread function (or PSF) to effectively increase the resolution of the instrument. Inspired by this, I decided to leave out the relay optics between slit-to-grating and from grating-to-detector to see if I could use post-processing to effectively sharpen up the overly broad PSF and have an even simpler and less expensive instrument.
The spectrograph design:

• contains a ~0.2mm printed slit

• 400-700nm (approx) spectral range

• Variable spectral resolution (~3.3nm @400nm, ~1.8nm @ 700nm), not accounting for the PSF

• 1000 line-per-mm diffraction grating (cut into a 4mm wide strip, and inserted into the spectrograph flush with the slit aperture)

• 3D printable on an inexpensive printer

• Very small size — about 1cm wide x 2cm long x 3cm tall.

With a spectrometer you’re often battling for SNR, and have to worry about stray light. Although these pictures don’t show it, the spectrograph has to be spray painted with a flat matte black paint to get any kind of performance.

http://www.tricorderproject.org/blog/?p=206

http://www.thingiverse.com/thing:148270


Here is the PublicLab version of 3d printable spectrometer:

http://diy3dprinting.blogspot.com/2013/09/publiclaboratory-mobile-3d-printed.html

Ok, this is just amazing. Water does not run out trough the openings!




From video description:

Scientists have developed a universal approach for printing materials with easy-to-modify surfaces to eliminate the need for multiple 3D printers. The versatile 3D printing technique mixes a 3D printing resin with a bromine-containing acrylate. The acrylate acts as an initiator to allow polymer brushes to grow on the printed surface. Printed 3D structures are then grafted into useful materials by surface-initiated atom transfer radical polymerisation.
To test their integrated initiator approach, the group fabricated lattices containing the polymer brushes and modified them to be either superhydrophobic or superhydrophilic. One superhydrophobic structure was in the form of a 2.5 cm diameter hollow mesh ball with 1 mm pores. When filled with water, the hydrophobic ball effectively held the fluid without leakage, even when shaken.
Taken from the following paper:
X Wang et al, Chem. Commun., 2013, DOI: 10.1039/c3cc45817b (rsc.li/1dYFhpS)

Video by: http://www.youtube.com/user/ChemistryWorldUK?feature=watch
Source:
http://www.rsc.org/chemistryworld/2013/09/3d-printing-ink-surface-modification