♃ Tin
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Silicene is a two-dimensional allotrope of silicon, with a hexagonal honeycomb structure similar to that of graphene
Contrary to graphene, silicene is not flat, but has a periodically buckled topology; the coupling between layers in silicene is much stronger than in multilayered graphene; and the oxidized form… Read more.
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Rose madder aka madder
Rose madder (also known as madder) is a red paint made from the pigment madder lake, a traditional lake pigment extracted from the common madder plant Rubia tinctorum. Madder lake contains two organic red dyes: alizarin and purpurin. As a paint, it has been described as a fugitive,… Read more.
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