Abstract A numerical analysis of the thermocapillary-driven melting phase change materials (PCMs) in weightlessness is presented. The explored for different PCMs with moderate temperatures, due to their potential thermal control space applications. We consider three alkanes — n-octadecane, n-nonadecane, and n-eicosane gallium. Results are discussed terms dimensionless Stefan (Ste) Marangoni (Ma...

The title compound was prepared by the reaction of 1,4,10,13-tetraoxa-7,16-diazacyclo-octadecane with 4-chloro-2-methyl-phenoxyacetic acid in a ratio of 1:2. The structure has been proved by the data of elemental analysis, IR spectroscopy, NMR (1H, 13C) technique and by X-ray diffraction analysis. Intermolecular hydrogen bonds between the azonium protons and oxygen atoms of the carboxylate grou...

Thin (thickness h approximately 3 nm) films of n-octadecane and n-hexadecane adsorbed on mica surfaces from vapor close to their bulk melting points (T(m)) have been studied in a surface force apparatus. Using data on the growth rate of capillary condensates between the mica surfaces in contact and measurements of h, we have identified a transition in the structure of the adsorbed films a few d...

Dielectric Switching In article number 2214544, Ming Jiang, Lijie Dong, and co-workers propose a synergistic dielectric switching mechanism. The crystallization/melting behavior of octadecane induces the aggregation/dispersion conducting micelles, resulting in significant simultaneous enhancement/weakening interfacial polarization electrode polarization—the structural transition results an unpa...

In this study two phase change materials (PCMs) mixed with sand were evaluated for distributed latent heat thermal energy storage (LHTES) coupled a novel Flat-Panel ground exchanger (GHE) shallow geothermal applications. N-Octadecane and commercial paraffin-based PCM (30% v/v) separately sand, which is commonly used as backfilling material GHE. Both mixtures underwent 16 cycles specimen’s tempe...

A new solvothermal method for the synthesis of thiol-protected silver nanoparticles starting from silver thiolates is reported. The method has been tried with thiols of different chain length, such as octane and octadecane thiols, and the particle size was found to be nearly the same for both molecules. The synthesis was dependent on heating conditions and the best results were obtained when th...