Solid-state chemistry: A glass of carbon dioxide

  title={Solid-state chemistry: A glass of carbon dioxide},
  author={Paul F. McMillan},
  • P. McMillan
  • Published 15 June 2006
  • Chemistry, Materials Science
  • Nature
Carbon is unusual in its family of elements because it has gaseous oxides. But under high pressure, carbon dioxide forms crystalline solids and can become a glass — so revealing the chemical family resemblance.A new form of CO 2High pressure modifies the interatomic and intermolecular interactions in condensed matter, profoundly altering the physical and chemical properties of materials. This is dramatically demonstrated in a newly discovered form of carbon dioxide, dubbed a-carbonia. This… 

Carbon substitution for oxygen in silicates in planetary interiors

It is suggested that significant (several percent) substitution of C for O could occur in more complex geological silicate melts/glasses in contact with graphite at moderate pressure and high temperature and may be thermodynamically far more accessible than C for Si substitution.

Metastable phase transitions and structural transformations in solid-state materials at high pressure

We use a combination of diamond anvil cell techniques and large volume (multi-anvil press, piston cylinder) devices to study the synthesis, structure and properties of new materials under high

A new EXAFS investigation of local structural changes in amorphous and crystalline GeO2 at high pressure

ExAFS signals of glassy GeO(2) beyond the first Ge-O shell qualitatively confirm the continuous breakdown of the intermediate range order up to 10 GPa and no support to the recently claimed fully pentahedral intermediate state can be given.

A Solution for Reducing the Pollution of the Atmospheric Air

Here we show how polluted smoke can be compacted and transformed into a glass similar to amorphous silica glass, by means of gravitational compression produced in a compression chamber, where gravity

High-pressure studies with x-rays using diamond anvil cells

  • G. ShenH. Mao
  • Physics
    Reports on progress in physics. Physical Society
  • 2017
The essential concept of diamond anvil cell technology, together with recent developments and its integration with other extreme environments, are introduced and an overview of the latest developments in HP synchrotron techniques, their applications, and current problems are provided.

High-pressure studies with x-rays using diamond anvil cells

Pressure profoundly alters all states of matter. The symbiotic development of ultrahighpressure diamond anvil cells, to compress samples to sustainable multi-megabar pressures; and synchrotron x-ray

Thermodynamic stability of layered structures in compressed CO 2

Mal-Soon Lee,1 Javier A. Montoya,2,3,4 and Sandro Scandolo1,3 1The Abdus Salam International Centre for Theoretical Physics (ICTP), 34014 Trieste, Italy 2International School for Advanced Studies

Neuroeconomics: Best to go with what you know?

Tests involving a gambling task and an fMRI brain scanner show that humans appear to obey similar principles when considering their options, and suggest a neurobiological account of human exploration and point to a new area for behavioural and neural investigations.

Author Index Author Index for Volume 441 Increased Cell-to-cell Variation in Gene Expression in Ageing Mouse Heart (with

A distal enhancer and an ultraconserved exon are derived from a novel retroposon (Brar, G A. Rec8 phosphorylation and recombination promote the step-wise loss of cohesions in meiosis (

Carbon Dioxide in General



Amorphous silica-like carbon dioxide

The class of archetypal network-forming disordered systems, including a-SiO2, a-GeO2 and water, must be extended to include a-CO2, which is structurally homologous to the other group IV dioxide glasses.

Crystal structure of carbon dioxide at high pressure : "Superhard" polymeric carbon dioxide

The crystal structures of two molecular phases (I and III) and a polymeric phase (V) of CO2 have been investigated to 60 GPa. CO2-1 (Pa3) transforms to CO2-III (Cmca) at 12 GPa with almost no change

A density-driven phase transition between semiconducting and metallic polyamorphs of silicon

Experimental evidence is presented for the occurrence of a density-driven polyamorphic transition between semiconducting and metallic forms of solid amorphous silicon.

Structural transformation of molecular nitrogen to a single-bonded atomic state at high pressures.

The major transformation of this diatomic phase into the single-bonded (polymeric) phase, recently determined to have the cubic gauche structure (cg-N), proceeds as a first-order transition with a volume change of 22%.

A first-order liquid–liquid phase transition in phosphorus

An in situ X-ray diffraction observation of a liquid–liquid transition in phosphorus, involving an abrupt, pressure-induced structural change between two distinct liquid forms, strongly suggestive of a first-order liquid– liquid phase transition.

Polyamorphic transformations in liquids and glasses

Crystalline solids undergo large changes in their structure and properties as they transform between different polymorphs in response to the pressure and the temperature. It now appears that

Elements, Oxides, and Silicates: High Pressure Phases with Implications for the Earth's Interior

This comprehensive volume brings together in a well-organized format the vast experimental data on phase relationships in elements, oxides, and silicates at high temperatures and pressures. It also

Bright Earth: The Invention of Colour

The eye of the beholder - the scientist in the studio plucking the rainbow - the physics and chemistry of colour the forge of Vulcan - colour technology in antiquity secret recipes - alchemy's

Quartzlike carbon dioxide: An optically nonlinear extended solid at high pressures and temperatures

An extended-solid phase, carbon dioxide phase V (CO2-V), was synthesized in a diamond anvil cell by laser heating the molecular orthorhombic phase, carbon dioxide phase III, above 40 gigapascals and