Scientists have previously discovered that C60 can take the form of different phases of matter, including solids and liquids. Here, chemists Patrick Royall from the University of Bristol and Stephen Williams from the Australian National University found that C60 can theoretically exist in a dense liquid phase containing clusters, which bind together to form a gel structure, specifically a "spinodal" gel. The gel is made entirely of carbon.
In their study, the scientists performed computer simulations showing that C60 can form a gel at moderately high temperatures and very high quench rates. The simulations showed that C60 gels form in about 10 nanoseconds and are stable at room temperature for at least 100 nanoseconds, which is the maximum time that the simulations were run.
As far as experimentally demonstrating the C60 gel, the scientists predict that it will be a challenge, largely due to the extremely high quench rates required, which are not currently experimentally feasible. However, they may investigate creative ways to lower the quench rate, or try to use larger fullerenes such as C540, which may also become a carbon gel. In any case, the potential existence of a one-component gel could lead to an overall better understanding of the nature of gels.
Original Article: http://www.physorg.com/news/2011-02-c60-kind-gel.html
More information: C. Patrick Royall and Stephen R. Williams. "C60: the first one-component gel?" arXiv:1102.2959v1 [cond-mat.soft]
via: The Physics arXiv Blog