Understanding supercooling mechanism in sodium sulfate decahydrate phase-change material

Sodium magnesium sulfate decahydrate, Na(2)Mg(SO(4))(2).10H(2)O, a new sulfate salt.

The structure of synthetic disodium magnesium disulfate decahydrate at 180 K consists of alternating layers of water-coordinated [Mg(H(2)O)(6)](2+) octahedra and [Na(2)(SO(4))(2)(H(2)O)(4)](2-) sheets, parallel to [100]. The [Mg(H(2)O)(6)](2+) octahedra are joined to one another by a single hydrogen bond, the other hydrogen bonds being involved in inter-layer linkage. The Mg(2+) cation occupies...

Understanding the phase-change mechanism of rewritable optical media.

Present-day multimedia strongly rely on rewritable phase-change optical memories. We demonstrate that, different from the current consensus, Ge(2)Sb(2)Te(5), the material of choice in DVD-RAM, does not possess the rocksalt structure but more likely consists of well-defined rigid building blocks that are randomly oriented in space consistent with cubic symmetry. Laser-induced amorphization resul...

Vapor Phase Esterification over Sodium Acid Sulfate

Off - Peak Cooling Using Phase Change Material

The electric utilities in the United States are faced with continued rapid growth in electrical demand. The traditional response to growth in demand has been the expansion of generating capacity. However , economic, environmental, and scheduling constraints will combine to make adequate expansion difficult, if not impossible, in the 1980's. This thesis examines load management as an alternative...

Mechanism of interaction of sodium dodecyl sulfate with mouse interferon.

Sodium dodecyl sulfate (SDS) and other alkyl sulfates, provided they contain a minimum of 12 carbon atoms (or 322 A in length), stabilize mouse interferon (MIF) in the presence of urea, 2-mercaptoethanol, and heat. When MIF is treated with the alkyl sulfates in the absence of urea and 2-mercaptoethanol, all alkyl sulfates inactivate MIF to the same extent. This suggests that the stabilizing eff...