Van der Waals heterostructures
When two atomically thin graphene-like materials are placed on top of each other their properties change, and a material with novel hybrid properties emerges. They are called van der Waals materials because the individual layers are attached to each other via a weak so called van der Waals interaction
Nature Publishing Group Van Der Waals Forces Tacked Materials Atomically Thin 2d Crystals இயற்கை வெளியீடு குழு
Source: nanowerk.com