Italian night out!
To celebrate our group Christmas dinner in an Italian restaurant!
Fantastic pasta, secret family recipe: Cr + Au + HF etching!
graphene transistor
Hello everyone!As I was browsing the scientific web today I came across this really nice review of graphene transistors. For everyone who would like to know more about this new invention the link here
The reasons to read it, one by one:
1. It's FOR FREE! (the article, not the transistor)
2. It's in Nature Nano, the best of nano journals
3. graphene transistors are the future of our electronics (or at least we like to believe that..)
Of course some of you may find it too long and too complicated, still it's worth to at least check out the pics ;)
And soon some of MY graphene transistors!
Salamandra
Feeling a bit fed up with those black-and-white SEM images, today it's time to color up!!!
I'm not so sure if anyone else sees a salamandra in this pic (I do!), in fact it's a leftover of the PMMA layer.
PMMA is a special kind of resist which we use for electron beam lithography. In this resist we can 'draw' shapes and lines with the electron beam and then fill them with metal, so they stay forever on the chip (like the small cross in the left corner of the pic). The PMMA should go away with acetone, but sometimes it leaves some stains and residues, just like on this sample.
No. 3 on the list http://de10.com.mx/13048.html :)
Silicon Fan
To mark our silicon chips we make a scratch with a diamond tip. Then in the region of the scratch we can sometimes find some pretty structures, just like this one. It reminds a little bit of a Spanish fan, the typical female accessory here, even in 21st century!
The high frequency resonator finally published!
In the paper we measure vibrations of a very short nanontube, which oscillates with very high frequency - up to 4.2 GHz! That's one of the highest frequencies up to now.
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