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hi my name is martin richard i work for

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the canadian space agency on a payload

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called bcat c1 which stands for binary

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colloidal alloy test

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c1 stands for canadian one

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the b-cat experiment is led by the

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mission manager at the canadian space

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agency his name is charles gautier and

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the mission scientist representing the

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pi at all times with me

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is lukino cohen

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and

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we work from the canadian space agency

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near montreal in canada

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the room there is called the p-talk

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payload telescience operations center

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and we interface directly with the poic

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in huntsville alabama and when the crew

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asks

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questions about the experiment they talk

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to huntsville but we hear what they say

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and we respond directly to poic and they

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voice the answer back to the crew

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sometimes

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when it gets complicated and the crew

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has more difficult questions to answer

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they will enable us on space to ground

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so we can talk directly to the crew

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it happens

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a few times here and there but usually

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we interface directly with the husk in

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huntsville alabama what we do in bcat is

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we study the behavior of colloidal

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samples what does that mean

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colloid is a fluid that has particles in

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it that we may not see

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everyday products

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are colloidal

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like

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toothpaste

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shaving cream detergent

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milk is even colloid

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and the researchers want to find ways to

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extend the shelf life of some products

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and also

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understand the behavior behavior of the

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particles inside these products and

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probably

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for many of them improve the

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manufacturing of those products

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the particles that are in our fluids

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would sediment with gravity they would

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go down the cuvettes

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and this would not

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a long-term exposition to

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real life

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so

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an example

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if you have a fabric softener in your

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laundry room it will take months before

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the product's sediment

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and uh it will take months before you

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see the effect of

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time on it but it will have an effect

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time will have an effect on your product

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in space we can

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simulate that with bigger particles in

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the in the fluids

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and

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that's over 10 days approximately

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instead of months we can simulate aging

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of a product over 10 days so that's what

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we try to simulate and track

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the experiment consists of mixing the

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sample and

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following the evolution of the sample

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over 10 days by taking

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photographs of the sample

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every hour or so

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and we see the evolution of the crystals

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in them the actually samples phase

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separate like oil and water

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and then crystals start to form

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and the challenge in this experiment is

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to

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obtain the optimal

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lighting

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orientation we have a camera the module

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itself

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and a flash unit in the back

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and we have to illuminate the sample at

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the right angle so we can see the

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crystals otherwise the sample looks

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clear it's it looks like water

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so you need an

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uh the proper angle plus minus five

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degrees approximately to see the

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crystals and then the pi can determine

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the behavior of the sample over those uh

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those ten days

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so crew members the operations consist

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of mixing the sample

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setting the camera and the flash

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and once this is all set it runs for 10

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days automatically on the