If the layers were aligned perfectly, two graphene layers would behave essentially the same as a single graphene sheet. “That’s where I started,” Dr. MacDonald said. “We threw out a few guesses,” Dr. MacDonald said. So Dr. MacDonald and Dr. Bistritzer had made some simplifications to come up with rough answers. But Dr. Jarillo-Herrero decided to test the prediction.

Source: International New York Times October 30, 2019 21:00 UTC