X-RAY STANDING WAVES - A MOLECULAR YARDSTICK FOR BIOLOGICAL-MEMBRANES
X-RAY STANDING WAVES - A MOLECULAR YARDSTICK FOR BIOLOGICAL-MEMBRANES
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DOI：
10.1126/science.3175619
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发表时间：
1988-09-30
期刊：
影响因子：
56.9
通讯作者：
SCHILDKRAUT, JS
中科院分区：
文献类型：
--
作者：
BEDZYK, MJ;BILDERBACK, DH;SCHILDKRAUT, JS
利用长周期X射线驻波获得了LB三层体系原子尺度上的结构信息。花生酸锌和镉的LB三层沉积在由200个具有25 μ m周期的钨/硅层对组成的层状合成微结构（LSM）上。已观察到30 ℃热诱导的锌原子层向内塌陷，该锌原子层最初位于LSM表面上方53 A处的LB三层中。测定了锌原子层的平均位置和宽度，精度为± 0.3 μ m。
Structural information on an atomic scale has been obtained for a Langmuir-Blodgett (LB) trilayer system by means of long-period x-ray standing waves. The LB trilayer of zinc and cadmium arachidate was deposited on a layered synthetic microstructure (LSM) consisting of 200 tungsten/silicon layer pairs with a 25 Å period. A 30 Å thermally induced inward collapse of the zinc atom layer that was initially located in the LB trilayer at 53 A above the LSM surface has been observed. The mean position and width of the zinc atom layer was determined with a precision of ± 0.3 Å.