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Ultrahigh-density phase-change data storage without the use of heating

Ara Jo1, Wonchul Joo, Won-Hyeog Jin

  • 1National Creative Research Center for Block Copolymer Self-Assembly, Department of Chemical Engineering, Pohang University of Science and Technology, Kyungbuk, Korea.

Nature Nanotechnology
|November 7, 2009
PubMed

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The phase of a given substance depends on the pressure and temperature. Thus, plots of pressure versus temperature showing the phase in each region provide considerable insights into the thermal properties of substances. Such plots are known as phase diagrams. For instance, in the phase diagram for water (Figure 1), the solid curve boundaries between the phases indicate phase transitions (i.e., temperatures and pressures at which the phases coexist).
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