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Blog for project PURE

Workshop in Netherland

Ladies and Gentelmens,

we are very proud to represent Switzerland with our project PURE, particulary during such a prestigeous workshop organised by the European Space Agancy (ESA) in the European Space Research and Technology Centre (ESTEC) in Noordwijk (NL).

  Here is the article of ESA about it : http://www.esa.int/Our_Activities/Human_Spaceflight/Research/ESA_Hosts_2006_Student_Parabolic_Flight_Preparatory_Workshop

Posted by Alexei Altoukhov at 22:00
Comments (1)
Presentation for the workshop

Now you can browse a presentation of PURE for the workshop in Noordwijk.

Description of the "Pure" experiment

The major challenge in contemporary industry is the availability of pure and clean crystals with perfect structure. That means without any unwanted impurities, and also with a perfect crystalline order. That offers much better potential in the technological applications (semiconductors, transistors, computer chips, ...) and enhance device performance.

The method usually used to get the best result is to heat the substrata to fusion temperature and then allow it to recrystallise in microgravity. Hence, the material, without undergoing convection and other gravity effects has more ideal crystalline structure.

Our goal is also to purify the crystal, but in a bit modified way by using zone refining. We will also locally heat the material with a coil, but only to about 2/3 of the fusion temperature and move the temperature peak through the whole sample. The effect will be, as in usual zone refining, that the dislocations and the impurities will move because of the temperature gradient.

Our goal is to understand the role of gravity in the movement of the impurities and dislocations due to temperature gradient. We expect that in microgravity the purification quality will be enhanced. In summary, we want to perform this experiment because:

  • it will work as it is just a modification of an experiment that already works
  • it hasn t been done before
  • it is important to understand this phenomena for fundamental sciences and industry point of view
Posted by Alexei Altoukhov at 0:19
PURE team email address
Hey guys,

I have put a link to our list mail address "people-pure@epfl.ch" on the main web portal.
this email address includes all five of us.


Posted by Alexandre De Oliveira e Sousa at 12:44
Finalist !!

Ladies & Gentlemen,

we are happy to inform that we have been selected to go to space ! With team number 1090 we are proud to be the unique representatives of Switzerland for that Student Parabolic Flight Campain (SPFC).

Now, we "just" have to prepare the experiment! Plenty of work ahead of us...

Here is the list of selected teams :

Posted by Nikolai Chapochnikov at 15:22
hey, good news! I ran into a friend that did the parabolic fligth two years ago. He has agreed to coach us for the logistic efforts.
Posted by Alexandre De Oliveira e Sousa at 13:44
We have been shortlisted!!!

The ESA has made its preliminar selection and published the shortlisted teams list. Below is the link to this list. Good score for Switzerland with 5 teams in the 60 shorlisted.

But it is not over : in roughly one week we should know if we will flight in the ZERO-G plane, with 29 other teams, to realize our PURE experiment in microgravity. So stay aware during the next week if you wanna be the first to know and support us!

Posted by Mark Ambühl at 11:08
Flight campaign will be deplaced

We received the information from ESA that the 9th SPFC flight campaign will be deplaced at the end of August. More time to prepare the PURE experiment in the eventuality we take part to the final selection. Finger crossed !!

Posted by Alexei Altoukhov at 22:45
Our web site is ready

The website of our project is now available at the adress pure.epfl.ch. There you can find full information about our purification procedure called "Zone Refining" in microgravity and how we plan to implement the experiment to fulfill the strong space and safety restrictions of flying within the ZERO-G aircraft.

Addendum : due to a CMS migration, it has been decided not to upgrade the content of the website pure.epfl.ch, therefore it is not accessible anymore. Nevertheless most of the information on our experiment can been found on this blog. Thank you for your understanding.

Posted by Alexei Altoukhov at 21:39
PURE blog
Hey, the PURE project has now its own blog. Soon there will be a web page pure.epfl.ch with the project description, partners, etc....

You can get RSS feed from here.
Posted by Alexandre De Oliveira e Sousa at 12:03
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