These example sentences are selected automatically from various online news sources to reflect current usage of the word 'silicon dioxide.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Silica aerogel is a nanomaterial with very low thermal conductivity (0.005 W m 1 K 1) at ambient temperature under vacuum supercritical dried) consisting of a nanoporous network of silicon dioxide nanoparticles of about 57 nanometer in diameter. Paul Stephen, San Antonio Express-News, 16 June 2021 Then, as now, the material was made by melting silicon dioxide, or silica, at about 2000☌, and then using a variety of techniques to shape it. 2021 This product has a notably clean flavor and was the only one devoid of silicon dioxide or other anticaking chemicals designed to keep the salts free-flowing. 2021 Lifescaped's colors are often produced using silicon dioxide, a biodegradable compound found organically in nature.ĬNN, 3 June 2021 Almost half of it is silicon dioxide glass created by meteoroids hitting the moon, heating up and fusing the silicon topsoil into glass, then breaking it into tiny shards.Įric Niiler, Wired, 19 Aug. A very thin layer (approximately 1 nm or 10 ) of so-called native oxide is formed on. 2021 The silicon dioxide deriving from the volcanic ash covering the carcass.ĭavid Bressan, Forbes, 24 Sep. Silicon dioxide is formed when silicon is exposed to oxygen (or air). Hydrophobic Colloidal Silicon Dioxide is a surface-modified synthetic amorphous silica that is differentiated from standard synthetic amorphous silica (e.g Colloidal silicon dioxide) in having its surface-based silanol groups bonded to dimethyl silyl groups making it hydrophobic in character. 2022 Glass, both ancient and modern, is a material usually made of silicon dioxide, or silica, that is characterized by its disorderly atoms.Ĭarolyn Wilke, Smithsonian Magazine, 24 Nov. Silica in the form of orthosilicic acid is the form predominantly absorbed by humans and is found in numerous tissues including bone, tendons, aorta, liver, and kidney. Chemically, silica is an oxide of silicon (silicon dioxide, SiO 2). Silicon and oxygen are the two most abundant elements in the earths crust. Silica represents a well-suited material for biomedical applications and in particular to dentistry. Margaret Osborne, Smithsonian Magazine, 30 June 2022 To make the device, the researchers started with layers of silicon and silicon dioxide. Silica is synonymous with silicon dioxide (SiO2). Recent Examples on the Web The temperature sensor is made up of four layers a layer of magnesium is encapsulated by two layers of silicon dioxide, an insulating material, and a layer below that serves as an adhesive.

Silica dioxide