Visualization of chemical reactions on crystal surfaces: the elucidation of adsorption/melting reactions of acid gases on ice crystal surfaces
| Project/Area Number |
15H02016
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Crystal engineering
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| Research Institution | Hokkaido University |
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Principal Investigator |
Sazaki Gen 北海道大学, 低温科学研究所, 教授 (60261509)
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| Co-Investigator(Kenkyū-buntansha) |
長嶋 剣 北海道大学, 低温科学研究所, 助教 (60436079)
村田 憲一郎 北海道大学, 低温科学研究所, 助教 (60646272)
古川 義純 北海道大学, 低温科学研究所, 名誉教授 (20113623)
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| Co-Investigator(Renkei-kenkyūsha) |
FURUKAWA YOSHINORI 北海道大学, 低温科学研究所, 名誉教授 (20113623)
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| Research Collaborator |
INOMATA MASAHIRO
CHEN JIALU
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥41,860,000 (Direct Cost: ¥32,200,000、Indirect Cost: ¥9,660,000)
Fiscal Year 2017: ¥8,580,000 (Direct Cost: ¥6,600,000、Indirect Cost: ¥1,980,000)
Fiscal Year 2016: ¥15,730,000 (Direct Cost: ¥12,100,000、Indirect Cost: ¥3,630,000)
Fiscal Year 2015: ¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
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| Keywords | 氷 / 表面化学反応 / 可視化 / 酸性ガス / 高分解光学顕微鏡 |
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| Outline of Final Research Achievements |
We obtained following six findings. 1) HCl gas induces the formation of droplets of HCl aqueous solution on ice crystal surfaces in the temperature range, in which no quasi-liquid layer (QLL) appear in the absence of HCl gas. 2) The HCl-solution droplets are incorporated into ice crystals as liquid inclusions when we grow ice crystals in the presence of HCl gas. 3) An wetting angle of the HCl-solution droplets on ice crystal surfaces is significantly larger than that of pure water. 4) Carbon dioxide and oxygen gasses do not induce the formation of liquid droplets on ice crystal surfaces. 5) Droplet and thin-layer types QLLs are 20-times and 200-times less fluidic than bulk water. The droplet and thin-layer types QLLs are formed by changes in the wettability of liquid water on ice crystal surfaces with changes in water vapor pressure. 6) The growth kinetics of elementary spiral steps on ice basal faces shows complicated temperature dependence.
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Report
(4 results)
Research Products
(52 results)
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[Journal Article] Oscillatory growth for twisting crystals2015
Author(s)
Ibaraki, Shunsuke Ise, Ryuta Ishimori, Koichiro Oaki, Yuya Sazaki, Gen Yokoyama, Etsuro Tsukamoto, Katsuo Imai, Hiroaki
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Journal Title
Chemical Communications
Volume: 51
Issue: 40
Pages: 8516-8519
DOI
Related Report
Peer Reviewed / Open Access / Acknowledgement Compliant
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[Presentation] 濡れ現象から見た氷の表面融解2016
Author(s)
村田憲一郎, 麻川明俊, 長嶋 剣, 古川義純, 佐﨑 元
Organizer
日本物理学会第71回年次大会
Place of Presentation
東北学院大学泉キャンパス（宮城県・仙台市）
Year and Date
2016-03-19
Related Report
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