GS 3: Science & Technology | Awareness in the fields of IT, Space, Computers etc.

Why in News?

Researchers at Delhi’s National Physical Laboratory (CSIR-NPL) have designed a low-pressure chemical vapour deposition (LPCVD) device that allows high quality, single-layer graphene.

Highlights:

• The thickness of a single layer is 0.34 nanometre and average grain size of graphene is 1-3 micrometre. Though there are about one billion grains in 4×2 square-inch single-layer graphene, the grains are highly connected to give a single continuous layer of graphene.
• The quality of the single-layer graphene grown using this device is superior than the ones reported in the literature.
• The quality of the single-layer graphene is metrology-grade, and can be used in next-generation quantum devices.
• The graphene was grown on a substrate made of copper, which acts as a catalyst.