Wednesday, April 2, 2025

The Graphene Zoo

 

From its slightly accidental inception 20 years ago, graphene has now turned into a large branch on the tree of technogenetic life.

Decoding 2D material growth: White graphene insights open doors to cleaner energy and more efficient electronics
Jan 2025, phys.org

White Graphene - the name for hexagonal boron nitride (where you blast out some of the carbon atoms from graphene and fill them with boron nitride instead)

via University of Surrey and Graz University of Technology: Anthony J. R. Payne et al, Unravelling the Epitaxial Growth Mechanism of Hexagonal and Nanoporous Boron Nitride: A First‐Principles Microkinetic Model, Small (2025). DOI: 10.1002/smll.202405404



Graphyne's transformation: A new carbon form with potential for electronics
Feb 2025, phys.org

Graphyne - It's not graphene, it's not carbon like diamonds with its 3-D lattice, it's not like graphite with its 2-D lattice, and it's not graphene with it's 1-D 2-D lattice. It's a 1-D 2-D 3-D lattice. Got it?

via Case Western Reserve University: Ali E. Aliev et al, A planar-sheet nongraphitic zero-bandgap sp2 carbon phase made by the low-temperature reaction of γ-graphyne, Proceedings of the National Academy of Sciences (2025). DOI: 10.1073/pnas.2413194122


Synthetic diamond with hexagonal lattice outshines the natural kind with unprecedented hardness
Feb 2025, phys.org

Synthetic hexagonal diamonds - heating graphene samples to high temperatures while inside a high-pressure chamber. By adjusting the parameters of their setup, the researchers found they could get the graphene to grow into a synthetic diamond with hexagonal lattices.

via Umeå University and materials scientists and engineers affiliated with several institutions in China such as Jilin University: Desi Chen et al, General approach for synthesizing hexagonal diamond by heating post-graphite phases, Nature Materials (2025). DOI: 10.1038/s41563-025-02126-9


Olympicene molecular chains create quantum spin systems with spintronics applications
Mar 2025, phys.org

Olympicenes - open-shell nanographenes (shaped like the Olympics logo)

via Max Planck Institute of Microstructure Physics: Chenxiao Zhao et al, Spin excitations in nanographene-based antiferromagnetic spin-1/2 Heisenberg chains, Nature Materials (2025). DOI: 10.1038/s41563-025-02166-1

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