Self-aggregation of a,co-Alkanediols into Two and Three Dimensional Crystallites at the Air-Water Interface. Relevance to Ice Nucleation

A correlation is presented between the crystalline structure of monolayers and multilayers of a,co-alkanediols HO-(CH2)„-OH (n = 16, 18, 19, 21, 22, 23, 24, 30) at the air-water interface and their function as ice nucleators. Structural elucidation was carried out by the following methods; grazing incidence X-ray diffraction, scanning force microscopy, cryo-transmission electron microscopy and external reflection Fourier transform-infrared spectroscopy

Self-aggregation of a,co-Alkanediols into Two and Three Dimensional Crystallites at the Air-Water Interface. Relevance to Ice Nucleation

A correlation is presented between the crystalline structure of monolayers and multilayers of a,co-alkanediols HO-(CH2)„-OH (n = 16, 18, 19, 21, 22, 23, 24, 30) at the air-water interface and their function as ice nucleators. Structural elucidation was carried out by the following methods; grazing incidence X-ray diffraction, scanning force microscopy, cryo-transmission electron microscopy and external reflection Fourier transform-infrared spectroscopy

Small doubling in groups

Let A be a subset of a group G = (G,.). We will survey the theory of sets A with the property that |A.A| <= K|A|, where A.A = {a_1 a_2 : a_1, a_2 in A}. The case G = (Z,+) is the famous Freiman--Ruzsa theorem.Comment: 23 pages, survey article submitted to Proceedings of the Erdos Centenary conferenc

Nucleation of WS2\bf WS_2 Fullerenes at Room Temperature

Inorganic nested fullerene-like particles of layered compound WS$_2$ were observed by high resolution transmission electron microscopy. It is shown, for the first time, that these structures can be nucleated inside the amorphous matrix at room temperature. At this condition the nucleation process may take 3-4 years