The graphene filled in the smaller hole with fresh
Due to their extraordinary abilities, graphene and other one-atom-thick molecules like carbon nanotubes have enormous potential for use in fields from electronics to medicine. For example, graphene is physically strong, transparent, flexible, and a great conductor of both electricity and heat—and now the two-dimensional carbon molecule can add another power to its roster: self-healing. When researchers made holes in a graphene sheet, the molecule rebuilt its own structure using new carbon atoms. This ability might help researchers grow graphene in large quantities and specific shapes.
Michael Zasloff, a researcher at the Georgetown University Medical Center, has discovered that bottlenose dolphins have “miraculous” healing powers: within several weeks they can heal from basketball-sized injuries, without any lasting disfigurements. Moreover, the injuries, presumably from clashes with sharks, don’t seem to cause the animals any apparent pain and don’t become visibly infected. Several abilities seem to be working together to promote healing; for example, Zasloff hypothesizes that bottlenose dolphins prevent bleeding to death by restricting blood flow to certain areas of their bodies, giving large gashes time to clot.
[Read more (and see pictures) at LiveScience.]
What’s the News: Researchers have developed the fastest yet self-healing polymer: The new class of materials dubbed “metallo-supramolecular polymers” heal after only one minute under UV light even when they’re repeatedly cut. This could eventually lead to self-repairing floor varnishes, automotive paints, and other applications. University of Illinois at Urbana researchers Nancy Sottos and Jeffrey Moore say these these healable polymers “offer an alternative to the damage-and-discard cycle” that is rampant in our consumer society, and could pave the way for products “that have much greater lifespans than currently available materials.” (You can see the process below in a press video from Case-Western Reserve University.)