Not only can graphene be used to make fast charging batteries, but also to detect cancer

Graphene can be used to distinguish ordinary cells from cancer cells Graphene, also known as single atomic layer graphite, is a plane film of carbon atoms, which is a quasi two-dimensional material with only one atomic layer thickness It is very popular in new nano materials Graphene is expected to be used for cancer detection Although graphene has not been widely used in life, scientists have never stopped exploring this advanced material Recently, a research team has found that after the interaction between cells and graphene, active cancer cells and ordinary cells can be distinguished by Raman imaging technology, which makes graphene hopeful for cancer detection The above research is from the research team of Vikas berry, director and associate professor of Chemical Engineering Department of University of Illinois at Chicago (UIC), and Ankit Mehta, assistant professor of Clinical Neurosurgery Department of UIC The team's paper was published in the international journal Applied Materials & interfaces in mid November, sponsored by the American Chemical Society Graphene can be used to distinguish whether there are cancer cells Graphene is a kind of new material with a single sheet structure composed of carbon atoms The carbon atoms are arranged in a honeycomb lattice with a hexagonal structure composed of SP2 hybrid orbital All the atoms on the surface share the electron cloud around the surface Berry said graphene is the thinnest two-dimensional material known in the world, and any change on its surface can be very sensitive Most animal cells have static negative charge on the surface, and the carboxyl group of sialic acid on glycoprotein is the main reason for the negative charge Because cancer cells are more active, the negative charge density on their surface will be higher When cells interact with graphene, the charges distributed in graphene are rearranged, which will change the energy of atomic vibration, which can be detected by Raman spectrum When normal cells and cancer cells interact with graphene, the energy of atomic vibration generated in graphene lattice is not the same, so it will show different situations under Raman imaging, so it can be distinguished whether there are cancer cells The technology is still in the experimental stage of cancer mice The results show that the technology is very promising In the future, we will further use the slice inspection method of human body to test At the same time, the technology can be used to distinguish other types of normal cells and cancer cells For example, using this technique can also distinguish healthy cells from glioblastoma cells Glioblastoma is the most common and aggressive malignant brain tumor in adults This disease is characterized by rapid growth and easy spread Only 30% of patients live for more than two years "Once a patient has had a brain tumor operation, we will be able to use this technique to see if the tumor will recur after the operation," Berry said In addition, the technology can also be used in bacteria to quickly check whether they are Gram-positive or Gram-negative.