Commit 174f4bba authored by Camron Blackburn's avatar Camron Blackburn
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add images to mask pages

parent bc45e5af
......@@ -2,13 +2,42 @@
manufacturer page: [3M N95 8000](http://multimedia.3m.com/mws/media/218306O/particle-respirator-8000-n95.pdf)
- electrostatically charged microfibers for "breathing easier and cooler"
<img src="./3MN95_mask.jpg" height="600">
- single layer mask, but looking at side wall in SEM looks like it's 3 layer as well (the layers just don't fall apart upon cutting)
## physical measurements
#### thickness (mm pm 0.005) measurements:
- overall: 0.721
#### weight (10(pm 0.5) x10(pm 0.5) mm square material) measured in g pm 0.0005
- overall: 0.0223
single layer mask, but looking at side wall in SEM looks like it's 3 layer as well (the layers just don't fall apart upon cutting)
## imaging
### SEM
no sputter coating on the sample
<img src="./SEM/3MN95_nosputter_top_0001_raw.jpg" height="600">
<img src="./SEM/3MN95_nosputter_top_0003.jpg" height="600">
imaged from the top of the side of the sample to get a better sense of how the material is sandwiched since the layers didn't come apart on this mask
<img src="./SEM/3MN95_nosputter_side_0001_raw.jpg" height="600">
<img src="./SEM/3MN95_nosputter_side_0002.jpg" height="600">
you can see that it looks like it's comprised of 3 separates layers like the other two masks because the center part is made up of much smaller and tighter packed fibers.
<img src="./SEM/3MN95_nosputter_side_0004_raw.jpg" height="600">
### Optical
top view of outside facing fask in optical microscope. fibers are transparent
<img src="./optical/top_3.jpg" height="600">
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# Gerson N95 Mask
manufacterer site: []()
manufacterer site: [1730 N95 Particulate Respirator](https://www.gersonco.com/product/1730-n95-particulate-respirator/)
- electrostatically-charged (is this for filter efficiency or breathing easability?)
- nose cushion on the inside for comfort
<img src="./gersonN95.jpg" height="600">
three layer mask (inside layer --> outside layer)
<img src="./gersonN95_layers.jpg" height="600">
![](./gersonN95_mask.jpg)
## physical measurements
#### thickness (mm pm 0.005) measurements:
......@@ -18,3 +25,34 @@ manufacterer site: []()
- outside layer: 0.0122
## imaging
### SEM
no sputter coating
#### inside layer
<img src="./SEM/Gerson95_nosputter_insidelayer_0001.jpg" height="600">
<img src="./SEM/Gerson95_nosputter_insidelayer_0003_raw.jpg" height="600">
#### middle layer
<img src="./SEM/Gerson95_nosputter_middlelayer_0002.jpg" height="600">
<img src="./SEM/Gerson95_nosputter_middlelayer_0004.jpg" height="600">
#### outside layer
<img src="./SEM/Gerson95_nosputter_outsidelayer_0001.jpg" height="600">
<img src="./SEM/Gerson95_nosputter_outsidelayer_0004_raw.jpg" height="600">
cuts cleanly - outside layer edge
<img src="./SEM/Gerson95_nosputter_outsidelayer_0002_raw.jpg" height="600">
### Optical
these are pretty
<img src="./optical/outsidelayer_3.jpg" height="600">
<img src="./optical/outsidelayer_4.jpg" height="600">
<img src="./optical/outsidelayer_5.jpg" height="600">
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......@@ -4,10 +4,14 @@ manufacturer site: [Kimberly Clark 47117](https://www.kcprofessional.com/en-us/p
- not recommended for blood or blodily fluid protection
![](./KC47117.jpg)
<img src="./KC47117.jpg" height="600">
Three layer mask (inside --> outside, left --> right)
![](./KC47117_layers.jpg)
Three layer mask (inside layer --> outside layer)
<img src="./KC47117_layers.jpg" height="600">
- the outer layers look like some sort of pressed pulp, not as fibrous and stringy as the N95 masks
- the middle layer looks more like the N95 mask outer layer, except with smaller fiber width
## physical measurements
#### thickness (mm pm 0.005) measurements:
......@@ -26,9 +30,41 @@ Three layer mask (inside --> outside, left --> right)
## imaging
When imaging in the SEM without sputter coating the material you disappear if focus too closely (either blowing away or disintegrating from the electron beam - hopefully this isn't damaging the SEM??) the same way that the dust particles on the Gerson N95 did. So I added a 20 nm gold layer to the top of each layer.
### SEM
When imaging in the SEM without sputter coating the material you disappear if focus too closely (either blowing away or disintegrating from the electron beam - hopefully this isn't damaging the SEM??) the same way that the dust particles on the Gerson N95 did.
So all images have a 20 nm gold layer on top
#### inside layer
<img src="./SEM/KC47117_20sputter_insidelayer_0001.jpg" height="600">
<img src="./SEM/KC47117_20sputter_insidelayer_0002.jpg" height="600">
<img src="./SEM/KC47117_20sputter_insidelayer_0005_raw.jpg" height="600">
#### middle layer
this looks to be the layer doing the most filtration
<img src="./SEM/KC47117_20sputter_middlelayer_0002_raw.jpg" height="600">
<img src="./SEM/KC47117_20sputter_middlelayer_0005.jpg" height="600">
#### outside layer
same as inside layer
progressively zooming in on the same spot:
<img src="./SEM/KC47117_20sputter_outsidelayer_0001_raw.jpg" height="600">
<img src="./SEM/KC47117_20sputter_outsidelayer_0002_raw.jpg" height="600">
<img src="./SEM/KC47117_20sputter_outsidelayer_0003_raw.jpg" height="600">
### Optical
checking for burn marks or any deformation on the sample that was put in the SEM without sputter coating .. couldn't find anything
<img src="./optical/top_2.jpg" height="600">
### observations
- the outer layers look like some sort of pressed pulp, not as fibrous and stringy as the N95 masks
- the middle layer looks more like the N95 mask outer layer, except with smaller fiber width
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