Idea of Radioactive Icon
The logo is a typical radiation or nuclear symbol. It is made of a main circle, inside of which there are four more shapes. The first shape is a small circle in the center and it is surrounded by three rounded triangles facing inwards towards the small circle.
This Radioactive icon is made in Material Design style
developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 6,200 icons, all in the same style and quality.