Amorphous carbonia

Posted on Apr 4, 2026

Amorphous Carbonia: An Exotic Form of Carbon Dioxide

Welcome to our exploration of the lesser-known world of Amorphous Carbonia. Also known as a-carbonia or a-CO2, this intriguing solid form of carbon dioxide shares similarities with amorphous silica glass.

How is Amorphous Carbonia Made?

In 2006, scientists managed to create amorphous carbonia in a laboratory setting by exposing dry ice to immense pressures ranging from 40-48 gigapascals (that’s 400,000 to 480,000 atmospheres!). This process was carried out using a specialized tool called a diamond anvil cell.

However, be aware that this material is not stable under ordinary pressures. It quickly returns to its normal CO2 state.

The Structure of Amorphous Carbonia

Unlike typical carbon dioxide crystals, where molecules are bonded by weak Van der Waals forces, amorphous carbonia exhibits a unique three-dimensional network of covalently bound atoms. This structure is reminiscent of silicon dioxide or germanium dioxide glass.

Potential Applications

Researchers are intrigued by the possibility that mixtures of a-carbonia and a-silica could result in an extremely hard and rigid glass material suitable for use at room temperature. Such a glass could potentially serve as protective coatings, finding applications in various fields, such as microelectronics.

Implications for Astrophysics

The discovery of amorphous carbonia has far-reaching implications for astrophysics. Given the potential existence of amorphous solid carbon dioxide within the interiors of massive planets, this finding may help us better understand the cosmic bodies in our solar system and beyond.

Stay tuned as we delve deeper into the fascinating world of space-related discoveries!

Reference for the method of creating amorphous carbonia. Reference for the instability of amorphous carbonia at ordinary pressures.