Suramya's Blog : Welcome to my crazy life…

Researchers in Denmark have created a crystal out of a cobalt salt that absorbs oxygen and stores it. If the crystal is then exposed to heat or low oxygen conditions it releases the stored oxygen back out. It is efficient enough that just a spoonful of the crystal can suck up all the oxygen in a room. This is an awesome find/creation and I can think of a lot of uses for this of the top of my head:

• Firefighting/Fire suppression systems in buildings
• Scuba Diving
• Underwater Search and rescue
• Space travel

and a whole bunch of other uses that I haven’t thought of yet.

The crystal is a salt made from cobalt*, and it appears to be capable of holding oxygen at a concentration that is 160 times higher than the air we breathe. The paper notes that “an excess” of the substance would bind up to 99 percent of the oxygen in a room.

But what’s more remarkable is that the crystal can later release the oxygen when exposed to heat or low-oxygen conditions. In a press release, study author Christine McKenzie likens it to the hemoglobin in our blood, which uses iron to bind and release oxygen in the human body.

If you must know, the chemical name of the salt is written out as [{(bpbp)Co2II(NO3)}2(NH2bdc)](NO3)2 * 2H2O, where “bpbp” stands for 2,6-bis(N,N-bis(2-pyridylmethyl)-aminomethyl)-4-tert-butylphenolato, and “NH2bdc2” stands for 2-amino-1,4-benzenedicarboxylato).

Now if you can understand the gobbledy gooke in the last paragraph hats off to you, I will just call it a crystal and be done with it. This is the first findings paper and hopefully the crystal will live up to its expectations. The research paper detailing the findings is available at: findresearcher.sdu.dk

Thanks to popsci.com for the original story.

– Suramya

Back in 2000 I had written an article for NJIT’s college newspaper ‘The Vector’ about how boffins at the University of Texas were using viruses to create semi-conductor chips. This weekend I was going through my files and I found a scanned copy of the article that I had been meaning to transcribe and post on the site but never got around doing, Then today I had a story about MIT researchers using Bacteria to assemble furniture pop-up in my feeds so I had to write a post about it. 🙂

Specifically, the MIT researchers were able to put bacteria to work producing conducting biofilms, some of which were studded with quantum dots, and arranging gold nanowires. This paves the way for the development of mass manufactured cell-based material factories, and even “living materials” that have some of the desirable properties of bones or trees, Lu confirmed.

They were able to do this by using E. coli, which naturally creates biofilms containing amyloid fibril proteins which, somewhat like the hooks in Velcro, help it attach to surfaces. The hooks on this gloopy velcro are made from a repeating chain of protein units called CsgA, which can be modified by adding peptides, which can be used to let parts of the film capture specific materials, like gold nanoparticles.

Basically the researches were able to make the bacteria grow in a particular design using a genetically engineered strain of CsgA, opening the way for future generations to be able to create bio-engineered equipment on demand. One of the things that is a bit scary is that they are using live bacteria for this experiment so they would have to be absolutely sure that they don’t mutate and cause a potential outbreak down the line.

I don’t know if this research is going to go anywhere or will it become another curiosity like the story on chip manufacture in 2000’s that never really went anywhere after the initial story. I did a cursory search today on that story but didn’t find any follow up articles or papers on it. Guess not every initial success is followed up by later successes and commercial successes.

Thanks to Slashdot and The Register for the original links.

– Suramya