 Negative thermal expansion, NTE, materials are becoming increasingly popular as they offer the ability to control the expansion or contraction of materials under varying temperatures. These materials can be used in a variety of applications, including controlled thermal expansion composites, but there are still many challenges that need to be overcome before they can be widely implemented. Transverse atomic vibration is one of the mechanisms behind NTE, and it has been found to be effective in certain materials. However, there are also limitations to this type of material, such as its brittleness and low thermal conductivity. Additionally, the materials must be carefully designed and manufactured to ensure proper performance. This article was authored by Cora Lind.