首页   按字顺浏览 期刊浏览 卷期浏览 Scanning tunneling microscopy of the phosphatidylcholine bilayers
Scanning tunneling microscopy of the phosphatidylcholine bilayers

 

作者: Changhong Luo,   Chuanfeng Zhu,   Like Ruan,   Guizhen Huang,   Changchun Dai,   Zhengbo Cheng,   Chunli Bai,   Yaxian Su,   Sanduo Xu,   Kechun Lin,   John D. Baldeschwieler,  

 

期刊: Journal of Vacuum Science&Technology A: Vacuum, Surfaces, and Films  （AIP Available online 1990）
卷期: Volume 8, issue 1  

页码: 684-686

 

ISSN:0734-2101

 

年代: 1990

 

DOI:10.1116/1.576981

 

出版商: American Vacuum Society

 

关键词: SCANNING TUNNELING MICROSCOPY;MEDIUM TEMPERATURE;BIOLOGICAL MATERIALS;SURFACE STRUCTURE;SPATIAL RESOLUTION;BILAYERS;LIPIDS;PHASE TRANSFORMATIONS;SAMPLE PREPARATION;USES;organic materials

 

数据来源: AIP

 

摘要:

The bare surface of the egg‐PC bilayers after being dried at room temperature was observed by the STM and images with angstrom resolution were obtained. Results indicate that the lipid heads form islands of an average of 210 Å in diameter and 40 Å in separation on the bilayers and that each island contains about 170 lipid heads of 7.5 Å in diameter. The size of the lipid heads is correspondent with that calculated from the standard bond distances and the bond angles. The ordered distribution of the lipid heads in some areas may correspond to the ordered arrangement of the lipid heads on the egg‐PC bilayers before being dried. The STM results also show that there exists the ripple phase in the egg‐PC bilayers below its phase transition temperature.

 

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