Electron beam induced isotropic decomposition of nano ice = 전자빔에 의한 나노 얼음의 등방적 분해

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Here, we observed decomposition of crystal ice on graphene substrate under controlled electron beam dose through cryo HR TEM. It is well known that electron beam influence during observation by TEM is rather volumetric rather than surface. However, according to our observation, the decomposition of hexagonal and cubic ice was analyzed and compared to the power law relationship. The result suggest that decomposition initiated from each facets of both cubic and hexagonal particle. In addition, the bulk crystallinity was maintained, only changing its size which gives an evidence of primary damage in radiation damage. These observations give an evidence for exceptional stability under electron beam compared to other beam sensitive materials and we expect further research regarding to this property.
Advisors
Yuk, Jong Minresearcher육종민researcher
Description
한국과학기술원 :신소재공학과,
Publisher
한국과학기술원
Issue Date
2019
Identifier
325007
Language
eng
Description

학위논문(석사) - 한국과학기술원 : 신소재공학과, 2019.2,[iv, 45 p. :]

Keywords

crystalline ice; cryo electron microscopy▼aradiolysis damage▼asurface decomposition; 얼음 결정▼a저온 전자현미경▼a전자빔 방사선 분해▼a표면 분해

URI
http://hdl.handle.net/10203/266487
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=843293&flag=dissertation
Appears in Collection
MS-Theses_Master(석사논문)
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