Silica aerogel

Silica aerogel is a lightweight, highly porous material made from silicon dioxide, similar to glass. It appears like a wispy, translucent substance and is known for its exceptional insulating properties, meaning it effectively blocks heat transfer. Due to its low density and high surface area, silica aerogel is used in applications such as thermal insulation for buildings, spacecraft, and clothing. Despite its fragile, brittle nature, it provides an efficient barrier against heat loss while being nearly transparent, making it a remarkable material for energy efficiency and advanced technology.