DFM mentioned that i did some SEM images on the ash he sent and that the rsuts were probably stored somewhere in the treasury. This made me realize ( again) noone checks the menu and most people dont know what else we have here besides the posts. So what i am writing now can partly also be found in Gems.
There are 3 very nice microscopes available in the BioLab of the Ars Electronica Center which i may use to do micrscopic images.
A Phei Fenom SEM
Scanning Electron microscope
Here is a link to
PhenomWorld explaining the machine more detailed.
To prepare the samples, (the sample needs to be dead and dry) you place a double-sided adhesive foil on the top and add the sample with pincers. One needs to be very carefull that everything that goes into the SEM really sticks to the foil. Samples which are highly magnetic are a problem. The magnetic fields inside the machine might tear some tiny grains off and this might pollute the SEM. So we try to blow the dust/particles/stuff off with a spray. After doing this, one can place the peg in the charger using the special pincers. Adjust the charger and place it in the SEM.
The Lab also contains a Hirox digital video reflected light microscope. KH770. This microscope also has a program which allows to do 3D videos. We have lenses which either display a magnicafication of 50 fold. ( This is a handheld device and was not used for the ash images.) We also have lenses where you can continuously variable the magnification from 100 to 800 fold.
And then there is a Zeiss transmitted light microscope. Zeiss Axioscope A1. The microscope has lenses which allow a magnification of 100, 200, 400 and 1000 fold. It also has an extra channel using ultraviolett light.
And here is part of the gallery of images i did so far.
On my Flickr you can also find some images of sand from various regions of the world.
|Kilauea / Rope Lava|
|Mount Hood / Andesit|
|Newberry / Obsidian|
|Novarupta / Pumice|
All images are available in larger sizes and without the Copyright. If someone wants to use them, please drop an email, asking permission to Spica308(at)gmail.com . I will get back to you and if you do not wish to make money with my images, there should not be a problem. Whenever the images are used the credits are mandatory. ( Birgit Hartinger, Ars Electronica and Volcanocafe )
I used this material to write a post because VC needs a new one. So in case anyone of you wants to write up something… we ll be glad to look at it and eventually publish it.
I would also love the get my hands on more volcanic ash samples, so if you have one…. please…. get in contact.