South West | Materials, extraction | Technology & innovation

Aluminum that floats in water?

25 Sep '17
Alexander Boldyrev, a chemist at the University of Utah, the U.S., and his colleagues at the Southern Federal University in Rostov-on-Don, Russia, have used computer modeling to predict the existence of a new aluminum modification that is twice as light as water. The research results have been published in English in The Journal of Physical Chemistry C.

In sharp contrast to the widespread assumption that an aluminum spoon will sink in water due to the fact that its density is 2.7 grams per cubic centimeter vs. waters <1 gram per cubic centimeter, a new metastable ultra-light crystalline form of aluminum has been computationally designed in the project on the basis of a diamond lattice, which has an extremely low density of just 0.61 grams per cubic centimeter and floats in water.

Many chemical elements exist in the form of several basic substances called allotropic modifications. For example, graphite, graphene, soot, fullerenes and diamonds all have identical composition, but all display different properties because of differences in the way their carbon atoms are positioned.

According to Mr. Boldyrev, the research team used an unorthodox approach, in which all carbon atoms in the diamond lattice were replaced by aluminum Al4 tetrahedra.

The expected material was computed to be relatively stable, extremely light, resistant to corrosion, relatively inexpensive to produce, and non-magnetic. A substance with the above properties could be a boon in sectors like aircraft- and rocket-building. However, its premature to assert this with confidence, the scientists pointed out, as more research is needed to determine whether the material is strong and durable enough to qualify for such heavy-duty applications.
Publish in Twitter
Write to Facebook
Google Buzz
Write to LiveJournal
Show in MM
Share MK
COMMENT ON THIS STORY
Find Related Content

Locations: Rostov on Don

Tags: Southern Federal University (6) / diamond (41) / aluminum (41) / water (179) / diamond lattice (0) / allotropic modification (0) / Alexander Boldyrev (0) /

Latest News: South West
27 Apr '20 | Technology & innovation
19 Nov '19 | Technology & innovation
 

Feature stories

21 May '20
Russian and Italian researchers have developed a...
5 Apr '20
To extend the service life of medical fabric masksan...
26 Feb '20
A Russian developer has come up with its own...
Search (News archive - 22085)

World of the Future, World of AI

Luc Jones: A Guide to Doing Business in Russia and the CIS Countries
Why Russians Don't Smile
Advertising
Venture_Russia_2019_eng
Advertising
NATT
Advertising
Marchmont News

Latest News

10 Jul '20
In 2Q 2020, the Russians spent 15% more time in...
8 Jul '20
Federal authorities consider authorizing Russias...
6 Jul '20
52 start-ups joined in June the Go Global...

Most read stories from last week

9 Jul '20
The start-up of the Nanocenter of Mordovia...
9 Jul '20
10 Jul '20
In 2Q 2020, the Russians spent 15% more time in...