X-ray photographic studies of HAB liquid crystals

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Experimental X-Ray Studies of Liquid Surfaces

Over the past two decades synchrotron facilities dedicated to the generation of xrays for study of atoms, molecules and condensed matter have proliferated in Europe, Asia and the United States. As a result of the special properties of x-rays produced by these machines, there has been an enormous growth in the experimental possibilities. In this work we will demonstrate how these special propert...

متن کامل

X-ray studies of the phases and phase transitions of liquid crystals.

A short review is given of recent X-ray diffraction studies of the phases and phase transitions of thermotropic liquid crystals. The areas covered are twist-grain-boundary phases, antiferroelectric phases studied with resonant X-ray diffraction and smectic phases within gel structures. In all areas, X-ray diffraction has played a key role. Nonetheless, open questions remain: the nature of the s...

متن کامل

Synthesis of Silver Nanoparticles from Spent X-Ray Photographic Solution via Chemical Rreduction

Silver metal was recovered primarily from spent X-ray photographic solution using a horizontal tube furnace. The X-Ray Diffraction (XRD) spectroscopy analysis approved almost 95 percent purity of the recovered silver metal. In the next step, the synthesis of silver nanoparticles from the recovered silver metal proceeded by using chemical reduction method. The proposed method uses e...

متن کامل

X-ray reflectivity studies of liquid metal and alloy surfaces

Surface-induced atomic layering at the liquid/vapor interface in liquid metals has been observed using x-ray reflectivity on sputtered clean surfaces under ultrahigh vacuum conditions. A well-defined quasi-Bragg peak is obtained for surfaces of elemental Ga and a Ga-In alloy at large wave vectors qz;2.3–2.5 Å . These results are an unambiguous indication of atomic layering with an interlayer sp...

متن کامل

X-ray studies of atomic layering at liquid metal surfaces

Surface-induced layering has been observed in liquid gallium and mercury using X-ray reflectivity. The specular reflectivity R(q,) has been measured to wavevector transfers as large as q, = 3.0 A-‘. For Ga, the only major deviations from pesnel theory R, are near q, = 2.4 A-‘, where there is a peak in the ratio R/R,. For Hg, there is a broad peak near 2.15 A-‘. The data have been collected on a...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Acta Crystallographica Section A Foundations of Crystallography

سال: 1981

ISSN: 0108-7673

DOI: 10.1107/s0108767381088788