Inorganic impurity effect on the photoinduced hydrophilic conversion on ultrasmooth SrTiO3 and TiO2 single crystal surfaces

Masao Katayama; Takayuki Miyakawa; Takeo Ohsawa; Jun Kuwano; Hideomi Koinuma; Yuji Matsumoto

doi:10.1143/JJAP.46.L562

Inorganic impurity effect on the photoinduced hydrophilic conversion on ultrasmooth SrTiO₃ and TiO₂ single crystal surfaces

Masao Katayama, Takayuki Miyakawa, Takeo Ohsawa, Jun Kuwano, Hideomi Koinuma, Yuji Matsumoto

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

We report the effect of inorganic impurities on the photoinduced hydrophilic conversion on ultrasmooth SrTiO₃ and TiO₂ single crystal surfaces. A water droplet became well spread over on a TiO ₂-terminated SrTiO₃(100) surface after UV irradiation, whereas it remained beaded on a SrO-terminated SrTiO₃(100) surfaces. ZnP and CuO impurities deposited onto a rutile TiO₂(110) surfaces were found to suppress the hydrophilic conversion with increasing amounts of ZnP and CuO. No hydrophilicity characteristic of TiO₂ was observed after UV irradiation at a nominal impurity thickness of only 5 Å, indicating that the surface-exposed atomic layer plays a crucial role in photoinduced hydrophilic conversion.

Original language	English
Pages (from-to)	L562-L564
Journal	Japanese Journal of Applied Physics, Part 2: Letters
Volume	46
Issue number	20-24
DOIs	https://doi.org/10.1143/JJAP.46.L562
Publication status	Published - 2007 Jun 15
Externally published	Yes

Keywords

Hydrophilic conversion
Rutile
SrTiO
TiO
Ultrasmooth surface

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy (miscellaneous)
Physics and Astronomy(all)

Access to Document

10.1143/JJAP.46.L562

Cite this

Inorganic impurity effect on the photoinduced hydrophilic conversion on ultrasmooth SrTiO₃ and TiO₂ single crystal surfaces. / Katayama, Masao; Miyakawa, Takayuki; Ohsawa, Takeo; Kuwano, Jun; Koinuma, Hideomi; Matsumoto, Yuji.

In: Japanese Journal of Applied Physics, Part 2: Letters, Vol. 46, No. 20-24, 15.06.2007, p. L562-L564.

Research output: Contribution to journal › Article › peer-review

@article{6083ec348afb4200b3d7713b051c882f,

title = "Inorganic impurity effect on the photoinduced hydrophilic conversion on ultrasmooth SrTiO3 and TiO2 single crystal surfaces",

abstract = "We report the effect of inorganic impurities on the photoinduced hydrophilic conversion on ultrasmooth SrTiO3 and TiO2 single crystal surfaces. A water droplet became well spread over on a TiO 2-terminated SrTiO3(100) surface after UV irradiation, whereas it remained beaded on a SrO-terminated SrTiO3(100) surfaces. ZnP and CuO impurities deposited onto a rutile TiO2(110) surfaces were found to suppress the hydrophilic conversion with increasing amounts of ZnP and CuO. No hydrophilicity characteristic of TiO2 was observed after UV irradiation at a nominal impurity thickness of only 5 {\AA}, indicating that the surface-exposed atomic layer plays a crucial role in photoinduced hydrophilic conversion.",

keywords = "Hydrophilic conversion, Rutile, SrTiO, TiO, Ultrasmooth surface",

author = "Masao Katayama and Takayuki Miyakawa and Takeo Ohsawa and Jun Kuwano and Hideomi Koinuma and Yuji Matsumoto",

year = "2007",

month = jun,

day = "15",

doi = "10.1143/JJAP.46.L562",

language = "English",

volume = "46",

pages = "L562--L564",

journal = "Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes",

issn = "0021-4922",

publisher = "Japan Society of Applied Physics",

number = "20-24",

}

TY - JOUR

T1 - Inorganic impurity effect on the photoinduced hydrophilic conversion on ultrasmooth SrTiO3 and TiO2 single crystal surfaces

AU - Katayama, Masao

AU - Miyakawa, Takayuki

AU - Ohsawa, Takeo

AU - Kuwano, Jun

AU - Koinuma, Hideomi

AU - Matsumoto, Yuji

PY - 2007/6/15

Y1 - 2007/6/15

N2 - We report the effect of inorganic impurities on the photoinduced hydrophilic conversion on ultrasmooth SrTiO3 and TiO2 single crystal surfaces. A water droplet became well spread over on a TiO 2-terminated SrTiO3(100) surface after UV irradiation, whereas it remained beaded on a SrO-terminated SrTiO3(100) surfaces. ZnP and CuO impurities deposited onto a rutile TiO2(110) surfaces were found to suppress the hydrophilic conversion with increasing amounts of ZnP and CuO. No hydrophilicity characteristic of TiO2 was observed after UV irradiation at a nominal impurity thickness of only 5 Å, indicating that the surface-exposed atomic layer plays a crucial role in photoinduced hydrophilic conversion.

AB - We report the effect of inorganic impurities on the photoinduced hydrophilic conversion on ultrasmooth SrTiO3 and TiO2 single crystal surfaces. A water droplet became well spread over on a TiO 2-terminated SrTiO3(100) surface after UV irradiation, whereas it remained beaded on a SrO-terminated SrTiO3(100) surfaces. ZnP and CuO impurities deposited onto a rutile TiO2(110) surfaces were found to suppress the hydrophilic conversion with increasing amounts of ZnP and CuO. No hydrophilicity characteristic of TiO2 was observed after UV irradiation at a nominal impurity thickness of only 5 Å, indicating that the surface-exposed atomic layer plays a crucial role in photoinduced hydrophilic conversion.

KW - Hydrophilic conversion

KW - Rutile

KW - SrTiO

KW - TiO

KW - Ultrasmooth surface

UR - http://www.scopus.com/inward/record.url?scp=34547828998&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34547828998&partnerID=8YFLogxK

U2 - 10.1143/JJAP.46.L562

DO - 10.1143/JJAP.46.L562

M3 - Article

AN - SCOPUS:34547828998

VL - 46

SP - L562-L564

JO - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

JF - Japanese Journal of Applied Physics, Part 1: Regular Papers & Short Notes

SN - 0021-4922

IS - 20-24

ER -