Structure and Thermodynamics of Thin Films - Yefet, Shai
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The macroscopic phenomenology of hydrophobicity - the segregation of oil and water - is well studied. However, its theoretical understanding in a molecular level is still incomplete. Recent progress in X-ray diffraction allowed for the first time to determine the structure of the oil/water interfaces with atomic resolution, yielding information on the molecular-scale origin of the hydrophobic interaction. Although bare oil/water interfaces occur only rarely, these interfaces are often decorated by surfactants, which modify the hydrophobic interaction. Oil/water interfaces, modified by…mehr

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Produktbeschreibung
The macroscopic phenomenology of hydrophobicity - the segregation of oil and water - is well studied. However, its theoretical understanding in a molecular level is still incomplete. Recent progress in X-ray diffraction allowed for the first time to determine the structure of the oil/water interfaces with atomic resolution, yielding information on the molecular-scale origin of the hydrophobic interaction. Although bare oil/water interfaces occur only rarely, these interfaces are often decorated by surfactants, which modify the hydrophobic interaction. Oil/water interfaces, modified by non-ionic, electrically neutral, alcohol surfactants have been already studied. However, molecular resolution measurements for the more complex electrically-charged ionic surfactants are not available in the literature. Thus, a key ingredient in the fundamental understanding of the relation between ionic surfactants and the hydrophobic interactions is still missing. Here, we employ X-ray diffractionand surface tension techniques in order to investigate the structure and thermodynamics of these surfactant decorated oil/water interfaces and their hydrophobic interactions.
Autorenporträt
Shai Yefet was born in Israel to an Orthodox Jewish family. In addition to traditional Judaism studies, he graduated his M.Sc. at Bar-Ilan University in Molecular Physics, focusing on phase transition and crystallization of thin films. He is now studding for Ph.D. in Quantum Optics, focusing on development of novel laser systems.