Q. Which of the following is/are examples of van der Waals materials?
Select the correct answer using the codes given below:
Until six years ago, such materials did not exist but today, researchers believe that they hold the key to‘post-silicon’ electronics.
- VdW materials are made of piles of ultra-thin layers that are held together by weak van der Waals bonds, which arise when atoms are in close proximity.
- The success of graphene — a well known vdW material — stimulated scientists to look for other 2D crystals, where layers can be changed, added or removed in order to introduce new physical properties such as magnetism.
- Controlling magnetism, as is typical of such materials, could replace the current hard drive assemblies in computers and even become the key to quantum computing.
- Other examples of natural elemental van der Waals materials, although much less abundant than graphite, are native bismuth, antimony, selenium, and tellurium.
Source: The Hindu and Nature publications