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Kobayashi, Taishi*; Fushimi, Tomokazu*; Mizukoshi, Hirofumi*; Motokawa, Ryuhei; Sasaki, Takayuki*
Langmuir, 38(48), p.14656 - 14665, 2022/12
Times Cited Count:0 Percentile:0(Chemistry, Multidisciplinary)no abstracts in English
Kakiuchi, Takuhiro*; Matoba, Tomoki*; Koyama, Daisuke*; Yamamoto, Yuki*; Yoshigoe, Akitaka
Langmuir, 38(8), p.2642 - 2650, 2022/03
Times Cited Count:0 Percentile:0(Chemistry, Multidisciplinary)0xidation processes at the interface and the surface of Si(111) substrate with thin Hf films were studied using photoelectron spectroscopy in conjunction with supersonic oxygen molecular beams (SOMB). The oxidation starts at the outermost Hf layers and produces stoichiometric HfO. Hf silicates (Hf-O-Si configuration) were generated in the vicinity of the HfO
/Si interface in the case of the irradiation of 2.2 eV SOMB. The oxidation of the Si substrate takes place to generate SiO
compounds. Si atoms were emitted from the SiO
/Si interface region underneath the HfO
overlayers to release the stress generated within the strained Si layers. The emitted Si atoms can pass through the HfO
overlayers and react with the impinging O
gas.
Izumi, Atsushi*; Shudo, Yasuyuki*; Shibayama, Mitsuhiro*; Miyata, Noboru*; Miyazaki, Tsukasa*; Aoki, Hiroyuki
Langmuir, 37(47), p.13867 - 13872, 2021/11
Times Cited Count:2 Percentile:24.57(Chemistry, Multidisciplinary)Katsube, Daiki*; Ono, Shinya*; Takayanagi, Shuhei*; Ojima, Shoki*; Maeda, Motoyasu*; Origuchi, Naoki*; Ogawa, Arata*; Ikeda, Natsuki*; Aoyagi, Yoshihide*; Kabutoya, Yuito*; et al.
Langmuir, 37(42), p.12313 - 12317, 2021/10
Times Cited Count:1 Percentile:12.03(Chemistry, Multidisciplinary)We investigated the oxidation of oxygen vacancies at the surface of anatase TiO(001) using supersonic seeded molecular beam (SSMB) of oxygen. The oxygen vacancies at the top-surface and sub-surface could be eliminated by the supply of oxygen using an SSMB. These results indicate that the interstitial vacancies can be mostly assigned to oxygen vacancies, which can be effectively eliminated by using an oxygen SSMB. Oxygen vacancies are present on the surface of anatase TiO
(001) when it is untreated before transfer to a vacuum chamber. These vacancies, which are stable in the as-grown condition, could also be effectively eliminated using the oxygen SSMB.
Miyazaki, Tsukasa*; Miyata, Noboru*; Arima, Hiroshi*; Kira, Hiroshi*; Ouchi, Keiichi*; Kasai, Satoshi*; Tsumura, Yoshihiro*; Aoki, Hiroyuki
Langmuir, 37(32), p.9873 - 9882, 2021/08
Times Cited Count:4 Percentile:46.37(Chemistry, Multidisciplinary)Aoki, Hiroyuki; Ogawa, Hiroki*; Takenaka, Mikihito*
Langmuir, 37(1), p.196 - 203, 2021/01
Times Cited Count:1 Percentile:12.03(Chemistry, Multidisciplinary)Ito, Kanae; Harada, Masashi*; Yamada, Norifumi*; Kudo, Kenji*; Aoki, Hiroyuki; Kanaya, Toshiji*
Langmuir, 36(43), p.12830 - 12837, 2020/11
Times Cited Count:12 Percentile:58.79(Chemistry, Multidisciplinary)Miyazaki, Tsukasa*; Miyata, Noboru*; Yoshida, Tessei*; Arima, Hiroshi*; Tsumura, Yoshihiro*; Torikai, Naoya*; Aoki, Hiroyuki; Yamamoto, Katsuhiro*; Kanaya, Toshiji*; Kawaguchi, Daisuke*; et al.
Langmuir, 36(13), p.3415 - 3424, 2020/04
Times Cited Count:12 Percentile:65.41(Chemistry, Multidisciplinary)Miyazaki, Tsukasa*; Miyata, Noboru*; Asada, Mitsunori*; Tsumura, Yoshihiro*; Torikai, Naoya*; Aoki, Hiroyuki; Yamamoto, Katsuhiro*; Kanaya, Toshiji*; Kawaguchi, Daisuke*; Tanaka, Keiji*
Langmuir, 35(34), p.11099 - 11107, 2019/08
Times Cited Count:19 Percentile:70.65(Chemistry, Multidisciplinary)Kobayashi, Taishi*; Nakajima, Shogo*; Motokawa, Ryuhei; Matsumura, Daiju; Saito, Takumi*; Sasaki, Takayuki*
Langmuir, 35(24), p.7995 - 8006, 2019/06
Times Cited Count:2 Percentile:10.48(Chemistry, Multidisciplinary)Motokawa, Ryuhei; Endo, Hitoshi*; Yokoyama, Shingo*; Ogawa, Hiroki*; Kobayashi, Toru; Suzuki, Shinichi; Yaita, Tsuyoshi
Langmuir, 30(50), p.15127 - 15134, 2014/12
Times Cited Count:25 Percentile:63.18(Chemistry, Multidisciplinary)Niide, Teppei*; Shimojo, Kojiro; Wakabayashi, Rie*; Goto, Masahiro*; Kamiya, Noriho*
Langmuir, 29(50), p.15596 - 15605, 2013/12
Times Cited Count:13 Percentile:40.84(Chemistry, Multidisciplinary)Maekawa, Yasunari; Suzuki, Yasuyuki; Maeyama, Katsuya*; Yonezawa, Noriyuki*; Yoshida, Masaru
Langmuir, 22(6), p.2832 - 2837, 2006/03
Times Cited Count:6 Percentile:29.48(Chemistry, Multidisciplinary)Chemical modification of the internal surfaces of cylindrical pores with sub-micrometer of pore diameter in PET film was examined. The modification involved the alkylation of the carboxylic acid on the surfaces with the alkylation reagent containing a fluorescent probe, and it was monitored by observing the change in fluorescent emission intensity. When the DMF solution of 4-(bromomethyl)-6,7-dimethoxycoumarin (BrCU), which bore a coumarin fluorophore, was introduced into the pores, the emission and excitation intensities of the membranes increased proportionally with increases of the pore surface areas. Fluorescent spots of about 300 nm in diameter, which were located at the positions of the pores, can be observed in the fluorescence microscope image of the membranes, indicating that highly concentrated fluorescent probes are chemically incorporated on the internal surfaces of the cylindrical pores with 210 nm in diameter in the membranes. In the reactions of the PET surfaces with BrCU, the fluorescent intensities increased with increases of the contact angles. This result indicates that the hydrophilicity of the internal pore surfaces can be qualitatively modified by controlling the change in the fluorescent intensities.
Yamaki, Tetsuya; Asai, Keisuke*
Langmuir, 17(9), p.2564 - 2567, 2001/05
Times Cited Count:40 Percentile:92.2(Chemistry, Multidisciplinary)A new type of TiO nanosheet-organic complex multilayer film was successfully prepared by the Langmuir-Blodgett technique. Surface pressure-area curves demonstrated that a stable monolayer of dioctadecyldimethylammonium bromide (DODAB) was formed on an aqueous suspension of TiO
nanosheets derived from an exfoliated layered titanate, H
Ti
□
O
・H
O (x
0.7; □, vacancy). The hybrid monolayer of the ammonium amphiphiles and the TiO
nanosheet was quantitatively transferred onto a hydrophobic quartz plate to form a multilayer film. X-ray diffraction measurements confirmed the formation of an ordered structure of DODAB/TiO
with an interlayer distance of 3.4 nm.
Ichinose, Yuji; *; Kawanishi, Shunichi; *; *
Langmuir, 13(10), p.2603 - 2605, 1997/00
Times Cited Count:8 Percentile:45.41(Chemistry, Multidisciplinary)no abstracts in English
Ichinose, Yuji; Kawanishi, Shunichi
Langmuir, 13(22), p.5805 - 5807, 1997/00
Times Cited Count:5 Percentile:76.21(Chemistry, Multidisciplinary)no abstracts in English
*; *; *; *; *; Suzuki, Junichi; Funahashi, Satoru
Langmuir, 11, p.563 - 567, 1995/00
Times Cited Count:36 Percentile:82.63(Chemistry, Multidisciplinary)no abstracts in English
Safranj, A.; Yoshida, Masaru; Omichi, Hideki; Katakai, Ryoichi*
Langmuir, 10(9), p.2954 - 2959, 1994/00
Times Cited Count:19 Percentile:69.65(Chemistry, Multidisciplinary)no abstracts in English
Safranj, A.; Yoshida, Masaru; Omichi, Hideki; Katakai, Ryoichi*
Langmuir, 9(12), p.3338 - 3340, 1993/00
Times Cited Count:20 Percentile:89.8(Chemistry, Multidisciplinary)no abstracts in English
*; *; ; *
Langmuir, 4(1), p.195 - 200, 1988/01
Times Cited Count:8 Percentile:53.79(Chemistry, Multidisciplinary)no abstracts in English