[otto.kalliokoski@gmail.com]

Hi,

IR radiation goes further into a material than does light in the visual spectrum, so it tests a little deeper than just the surface. How deep into a material the radiation penetrates depends on the material however, so I think it may be hard to give a simple answer. A black bag probably won’t work (stuff that is black in the visual spectrum tend to also absorb IR radiation well) and an orange peel is probably too thick if you are hoping to say anything about e.g. the pulp (however, the peel of an orange may have markers that correlate well to qualities of the pulp, so this is not as futile as trying to determine properties of something inside a black bag).

A little primer on NIRS: https://en.wikipedia.org/wiki/Near-infrared_spectroscopy

 

[otto.kalliokoski@gmail.com]

Best guess:

The problem with liquids is probably the high IR absorptivity of water. So aqueous solutions will probably give a low signal. Try loading the small sample holder with a little (just barely covering the middle indentation) of the solution you are trying to analyze and see what the sensor makes of it? (You’ll have to clean out the holder carefully between samples, so it’s going to be a bit inconvenient, but it would be a start…)

Start with analyzing the same liquid a couple of times and see whether the results are consistent (whether the curves have a similar shape) before you analyze different liquids.

Oh, and let us know what you find out!

/Otto

[otto.kalliokoski@gmail.com]

Hi Ayelet,

Thank you for the quick reply.

The toolkit wouldn’t by any chance also allow for also importing spectra? That would otherwise be useful for reshuffling pre-existent collections and sharing scans…

/Otto

[otto.kalliokoski@gmail.com]

Hi Ayelet,

Is there somewhere where we can see what the additional features in the Researcher Toolkit are? My google-fu is failing me on this…

Best,

Otto

[otto.kalliokoski@gmail.com]

Hi Guy,

 

Any updates on how the new feature is coming along? Do you have a ballpark estimate of when we could hope to see it in ScioLab?

 

Best,

 

Otto

[otto.kalliokoski@gmail.com]

Hi,

 

I scanned some jeans because … um, I had a bunch lying around and you need to scan something, right? Just to add to the previous post, black fabric (even when it’s fairly faded in the visual spectrum) gives a really low signal overall. And I was unable to see any effect of synthetic fiber mixed in with the denim (elastan). But otherwise it seemed to do fairly well at a glance. Too bad its not possible to share collections at current since I’ve run out of denim to scan in my household… =)

[otto.kalliokoski@gmail.com]

Hi,

 

Just to clarify: There’s no way for multiple researchers to combine data into one collection?

 

I agree that this would be beneficial for developing some models. Is this anything you have in mind for the future?

 

/Otto

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