Clarification of the surface structure and the surface potential of amorphous ice by a low-temperature atomic force microscope

2016 Fiscal Year Final Research Report

• Project/Area Number: 26400507
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Petrology/Mineralogy/Economic geology
• Research Institution: Hokkaido University
• Principal Investigator: HIDAKA Hiroshi 北海道大学, 低温科学研究所, 助教 (00400010)
• Research Collaborator: NAKATUBO Syunichi
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 地球惑星物質 / アモルファス氷

Outline of Final Research Achievements

Measurements of the nano-scale structures of amorphous ice surfaces grown on Si(111)7×7 at low temperature were performed using a low temperature atomic force microscope. As a result, it was indicated the opposite of the common sense that the porous and the compact ice are formed at the low and the high temperatures, respectively. This is because the structure of amorphous ice had been measured in molecular scale in previous studies, whereas the nano-scale structures were directly measured in the present study. That is, it is attributed the difference of observed scale. The obtained findings would contribute to the correct understanding of the experimental results conducted using an amorphous ice and the development of geometric modeling of amorphous ice in theoretical study.

Free Research Field

数物系科学