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Gen Sazaki
Hokkaido University
Protein crystallizationChemistryCrystallizationCrystalCrystallography
232Publications
30H-index
2,874Citations
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Publications 232
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#1Ken NagashimaH-Index: 9
#2Josée MauraisH-Index: 1
Last. Gen SazakiH-Index: 30
view all 6 authors...
The surfaces of ice crystals near the melting point are covered with thin liquid water layers, called quasi-liquid layers (QLLs), which play crucial roles in various chemical reactions in nature. So far, there have been many spectroscopic studies of such chemical reactions on ice surfaces, however, revealing the effects of atmospheric gases on ice surfaces remains an experimental challenge. In this study, we chose HNO3 as a model atmospheric gas, and directly observed the ice basal faces by adva...
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#1Yoshinori Furukawa (Hokkaido University)H-Index: 23
#2Ken Nagashima (Hokkaido University)H-Index: 9
Last. Gen Sazaki (Hokkaido University)H-Index: 30
view all 6 authors...
An impurity effect on ice crystal growth in supercooled water is an important subject in relation to ice crystal formation in various conditions in the Earth's cryosphere regions. In this review, w...
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#1Yuki Nagata (MPG: Max Planck Society)H-Index: 22
#2Tetsuya Hama (Hokkaido University)H-Index: 17
Last. Gen Sazaki (Hokkaido University)H-Index: 30
view all 7 authors...
ConspectusThe ice premelt, often called the quasi-liquid layer (QLL), is key for the lubrication of ice, gas uptake by ice, and growth of aerosols. Despite its apparent importance, in-depth understanding of the ice premelt from the microscopic to the macroscopic scale has not been gained. By reviewing data obtained using molecular dynamics (MD) simulations, sum-frequency generation (SFG) spectroscopy, and laser confocal differential interference contrast microscopy (LCM-DIM), we provide a unifie...
1 CitationsSource
#1Ken-ichiro MurataH-Index: 8
#2Ken NagashimaH-Index: 9
Last. Gen SazakiH-Index: 30
view all 3 authors...
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#1Jialu Chen (Hokkaido University)H-Index: 1
#2Ken Nagashima (Hokkaido University)H-Index: 9
Last. Gen Sazaki (Hokkaido University)H-Index: 30
view all 4 authors...
Surface melting of ice crystals proceeds below the melting point (0 °C) and forms thin liquid water layers, called quasi-liquid layers (QLLs), which govern a wide variety of phenomena in nature. Hence, many studies have been performed so far; however, the lowest temperature above which QLLs exist on ice crystal surfaces varied from −90 to −1 °C. To reveal the cause of such significant variations, here we show, by laser confocal microscopy combined with Michelson interferometry, the behavior of Q...
1 CitationsSource
#1Fumitoshi Kaneko (Osaka University)H-Index: 18
#2Chihiro Katagiri (Tokyo Denki University)
Last. Ken Nagashima (Hokkaido University)H-Index: 9
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To protect themselves, insects cover their bodies with what is called cuticular lipid. The cuticular lipid of an American cockroach has a unique lipid content; the most abundant is a cis-alkadiene, cis,cis-6,9-heptacosadiene, amounting to about 70%, which is followed by a branched alkane 3-methylpentacosane. In order to clarify the structural features of the unique lipid composition below the critical temperature, the cuticular lipid was studied by Fourier transform infrared (FTIR) spectroscopy ...
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#1Ken-ichiro MurataH-Index: 8
#2Ken NagashimaH-Index: 9
Last. Gen SazakiH-Index: 30
view all 3 authors...
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#1Maddalena Bayer-Giraldi (Hokkaido University)H-Index: 2
#2Gen Sazaki (Hokkaido University)H-Index: 30
Last. Yoshinori Furukawa (Hokkaido University)H-Index: 23
view all 6 authors...
Ice-binding proteins (IBPs) affect ice crystal growth by attaching to crystal faces. We present the effects on the growth of an ice single crystal caused by an ice-binding protein from the sea ice microalga Fragilariopsis cylindrus (fcIBP) that is characterized by the widespread domain of unknown function 3494 (DUF3494) and known to cause a moderate freezing point depression (below 1 °C). By the application of interferometry, bright-field microscopy, and fluorescence microscopy, we observed that...
2 CitationsSource
#1Ken Nagashima (Hokkaido University)H-Index: 9
#2Gen Sazaki (Hokkaido University)H-Index: 30
Last. Yoshinori Furukawa (Hokkaido University)H-Index: 23
view all 5 authors...
Surfaces of ice have attracted considerable attention as “reaction sites” where atmospheric gases cause various chemical reactions in nature. Hence, revealing the uptake mechanism of atmospheric gases on/in ice remains an experimental challenge. Here we show the direct observation of ice crystal surfaces by advanced optical microscopy in the presence of hydrogen chloride (HCl) gas, which triggers a series of chemical reactions that cause ozone depletion. We found that the HCl gas induced the app...
1 CitationsSource
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