Coil under electron microscope

[KingOhms]

Seems like more of us need an Electron Microscope. Tried Amazon, $32,000 bucks was the most expensive I have seen. May have to do a Kickstarter.

 

[Robert Cromwell]

GOOD stuff AT. Esp the spectro analysis. Thanks a LOT for posting.
Electron microscopes are cool, much better than my little 1200X optical scope.

 

[Alien Traveler]

cool pictures for sure.
now what is the point? we get build up on our
coils no mater what we use or how we use it.
the $64.00 dollar question is,how much transfers
to the juice if any? have any of these compounds
been found in vapor in comparable amounts?
still there good pictures.
regards
mike

All debris we see on the pictures came from juice. First step: gunk is accumulated on a coil; gunk = caramelized sugars + "caramelized" whatever else is in juice. Then - dry burining. It removes (burn out) most of organic component and about all of the carbon. What remains (what wee see as debris on picture) is what was in juice but was impossible to remove by burning. Sure, high temperature changes things, and what we see after looks rather like ceramics than gunk.

 

[Alien Traveler]

Seems like more of us need an Electron Microscope. Tried Amazon, $32,000 bucks was the most expensive I have seen. May have to do a Kickstarter.

It's a used one.
Good microscopes start from $400,000

 

[vapero]

I would love to see a picture of a new unused coil just after being dry burn for removing hotspots and compressing it, It would be very interesting if the adjustments we to to a fresh coil changes something

 

[dchemist]

All debris we see on the pictures came from juice. First step: gunk is accumulated on a coil; gunk = caramelized sugars + "caramelized" whatever else is in juice. Then - dry burining. It removes (burn out) most of organic component and about all of the carbon. What remains (what wee see as debris on picture) is what was in juice but was impossible to remove by burning. Sure, high temperature changes things, and what we see after looks rather like ceramics than gunk.

Thanks so much for taking the time to do this! The XRF analysis was a nice touch.

My question is; are you confident the contamination is from the juice and not the wick? It seems more likely the metals would come from the cotton since the are used in several biological pathways, pesticides, fertilizers, etc.

Sent from my SM-N910P using Tapatalk

 

[vapero]

Thanks so much for taking the time to do this! The XRF analysis was a nice touch.

My question is; are you confident the contamination is from the juice and not the wick? It seems more likely the metals would come from the cotton since the are used in several biological pathways, pesticides, fertilizers, etc.

Sent from my SM-N910P using Tapatalk

I think if it would be from the cotton the derbis would be on the inner walls not on the outside

 

[englishmick]

All debris we see on the pictures came from juice. First step: gunk is accumulated on a coil; gunk = caramelized sugars + "caramelized" whatever else is in juice. Then - dry burining. It removes (burn out) most of organic component and about all of the carbon. What remains (what wee see as debris on picture) is what was in juice but was impossible to remove by burning. Sure, high temperature changes things, and what we see after looks rather like ceramics than gunk.

This seems to suggest that we might be better off using some other method to clean the coils and remove the juice residue. Washing or mechanical cleaning or solvents. Then dry burn after that. Regular operating temp of the coil is presumably a lot lower than dry burning temp, so maybe the residue isn't as hard or as well adhered to the metal before dry burning.

 

[Caterpiller]

Thank You @Alien_Traveler

That's quite reassuring, no visible pitting or corrosion of the coil, just some microscopic juice debry.

Nice pics.

 

[dchemist]

I think if it would be from the cotton the derbis would be on the inner walls not on the outside

I don't disagree. The same is true for the juice (should be on inner wall as well). It certainly is possible running cotton through knocked off the contamination. I would think it would take something more abrasive to do so. It certainly has me wondering.

Sent from my SM-N910P using Tapatalk

 

[nebulis]

Take a look on the very first picture, it was not dry burned.

Sorry for not being articulate enough. I did not mean the unused coil, I meant: before the first dry burn, but after you used it long enough to want to make a dry burn.

 

[Alien Traveler]

Thank You @Alien_Traveler

That's quite reassuring, no visible pitting or corrosion of the coil, just some microscopic juice debry.

Nice pics.

Yes, no damage to wire was observed.

 

[Robert Cromwell]

I don't disagree. The same is true for the juice (should be on inner wall as well). It certainly is possible running cotton through knocked off the contamination. I would think it would take something more abrasive to do so. It certainly has me wondering.

Sent from my SM-N910P using Tapatalk

The inner wall runs much cooler than the outer wall due to evaporative cooling and contact with a wet wick.

 

[skoony]

Thanks so much for taking the time to do this! The XRF analysis was a nice touch.

My question is; are you confident the contamination is from the juice and not the wick? It seems more likely the metals would come from the cotton since the are used in several biological pathways, pesticides, fertilizers, etc.

Sent from my SM-N910P using Tapatalk

seems more likely the metals would come from trace contaminants
in the coil itself.

regards
mike

 

[Alien Traveler]

Sorry for not being articulate enough. I did not mean the unused coil, I meant: before the first dry burn, but after you used it long enough to want to make a dry burn.

Yes, it is interesting, but not healthy for electron microscope - its vacuum system could be badly contaminated by PG and VG. Of course, I can wash coil in water or alcohol, but then I may remove a lot of interesting staff. May be I'll try it, but right now I have switched to unflavored...

 

[Robert Cromwell]

seems more likely the metals would come from trace contaminants
in the coil itself.

regards
mike


Maybe but the coil does not look eroded....

 

[thetrucker]

It's a used one.
Good microscopes start from $400,000

Holy Smokes Batman-$400,000--that's more than I spent on my first starter kit-650 mah with free bottle of mango flavor and 2 extra coil cartriges.

 

[dchemist]

seems more likely the metals would come from trace contaminants
in the coil itself.

regards
mike

Sure there are trace elements in the metal, but visually we don't see them in the first image. If the surface contamination came from the metal, what made it migrate to the outside? Many metals are purified by heating but they are typically molten? Think this could be the possibility here? When i dry burn, my coils don't get soft but i do pinch and reshape turn. Perhaps these contaminants are "squeezed" out? Interesting to say the least.

Sent from my SM-N910P using Tapatalk

 

[skoony]

seems more likely the metals would come from trace contaminants
in the coil itself.

regards
mike


Maybe but the coil does not look eroded....

not severely eroded but,there's a definite change in color and texture.
regards
mike

 

[skoony]

Sure there are trace elements in the metal, but visually we don't see them in the first image. If the surface contamination came from the metal, what made it migrate to the outside? Many metals are purified by heating but they are typically molten? Think this could be the possibility here? When i dry burn, my coils don't get soft but i do pinch and reshape turn. Perhaps these contaminants are "squeezed" out? Interesting to say the least.

Sent from my SM-N910P using Tapatalk

i am assuming any trace contaminants in the metal
would be dispersed evenly inside and out.
regards
mike