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News: Archive for 2001
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December 2001

CONGRATULATIONS to Katherine Langley on her wedding, which took place in St. Catharine's College on December 15, 2001.

 

 

December 2001

CONGRATULATIONS to Paul Midgley on his promotion to a Senior Lectureship in the Dept.

 

 

November 2001

Magnetite morphology and life on Mars

P R Buseck, R E Dunin-Borkowski, B Devouard, R B Frankel, M R McCartney, P A Midgley, M Posfai and M Weyland
Proc. Nat. Acad. Sci. 98 (2001), 13490-13495.

The above paper, which reexamines NASA's evidence about the former presence of life on Mars, was published in the Proceedings of the National Academy of Sciences on November 22, 2001. NASA's original work is based on a comparison of bright field TEM images of magnetite nanocrystals found in a meteorite from Mars with biogenic magnetite nanocrystals formed by terrestrial bacteria.

Our paper illustrates the application of electron tomography to provide three-dimensional images of such nanocrystals from tilt series of annular dark field images. The figure on the right shows one of our results from a bacterial magnetite nanocrystal. The three-dimensional shape of the crystal is shown from several directions. The work was mentioned on the following websites:

BBC | CNN | ABC News | Ananova | Yahoo | Le Monde | Voila | Spiegel
NY Times | Washington Times | LA Times | Florida Today
Newsday | news.com.au | Globe and Mail (Toronto) | MedServ
Scientific American | Geological Society | Science News Network | Space.com
Space Daily | Planetary Society | MarsSociety.de | Spaceflight now | Redcolony
Newsmax.com | Cosmiverse | Cyberpresse.ca | Detnews.com | Canoe.ca
Rense.com | Astronews.com | Blindfools (!) | Mysteria3000.de | Popularmechanics.com

The NASA response can be seen at Spaceref.

Click here to see the abstract of the paper on the journal website.
Click here to download the paper in pdf format [722 kB ].

 

 

September 2001

Visions of Science competition 2001

Two electron micrographs that Rafal Dunin-Borkowski submitted to the 'Science close-up' category of the Daily Telegraph/ Novartis Visions of Science 2001 competition were highly commended. The award ceremony was held at the Royal Society on September 18, 2001.

The first image on the right is entitled 'Crystal in a nanotube'. It shows a surface plot created from a focal series of high-resolution images of a single walled carbon nanotube that contains a single crystal of potassium iodide just three atoms wide. The sharp peaks show the regular arrangement of the atoms in the crystal.

This work was carried out with Jeremy Sloan and John Hutchison from Oxford and Rudi Meyer and Angus Kirkland from Cambridge.

The second image on the right shows the magnetic field lines in a single bacterial cell. The fine white lines are the magnetic field lines in the cell, which were measured using off-axis electron holography. Such bacteria live in sediments and bodies of water, and move parallel to geomagnetic field lines as a result of the torque exerted on their magnetosome chains by the earth's magnetic field.

This work was carried out in collaboration with Professor Richard Frankel from California Polytechnic State University.

Click here to see the story on the Cambridge University website.
Click here to access the Visions of Science website.

The images formed part of a national exhibition, and the story was featured in CAM magazine, the Cambridge News and the Cambridge Network.

 

 

August 2001

CONGRATULATIONS to Matthew Weyland on being awarded a fellowship from the Royal Commission for the Exhibition of 1851.

This award will allow Matthew to continue his research in Cambridge for a further two years. Only six such awards are made each year.

 

 

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