Is this you? Create Your Porfile
Avatar

Keisuke Fujikawa

Hokkaido University

Network

Latest external collaboration on country level. Dive into details by clicking on the dots.

Explore More

Hotspot

Dive into the research topics where Keisuke Fujikawa is active.

Explore More

Publication

Featured researches published by Keisuke Fujikawa.

Journal of Physics: Conference Series | 2007

Improvement of the XANAM System and Acquisition of a Peak Signal with a High S/N ratio

Shushi Suzuki; Motonori Nakamura; Kumiko Kinoshita; Yuichiro Koike; Keisuke Fujikawa; Nobuaki Matsudaira; W-J Chun; Masaharu Nomura; Kiyotaka Asakura

We have made remarkable progress in detecting X-ray-induced frequency shift signals, which will promote development of a chemically sensitive NC-AFM. A highperformance controller provides a tenfold higher signal to noise ratio than that previously reported. We confirmed that the frequency shift or complementary Z-feedback signal dependence on X-ray energy has a peak. An important feature of the signal is that it does not follow the absorption spectrum of a surface element. These new findings are important to elucidate this novel X-ray-induced phenomenon.

Chemical Physics Letters | 2006

Structure of low coverage Ni atoms on the TiO2(1 1 0) surface – Polarization dependent total-reflection fluorescence EXAFS study

Yuichiro Koike; Kaoru Ijima; Wang-Jae Chun; Hidenori Ashima; Takakazu Yamamoto; Keisuke Fujikawa; Shushi Suzuki; Yasuhiro Iwasawa; Masaharu Nomura; Kiyotaka Asakura

Surface Science | 2006

Self-regulated Ni cluster formation on the TiO2(110) terrace studied using scanning tunneling microscopy

Keisuke Fujikawa; Shushi Suzuki; Yuichiro Koike; Wang-Jae Chun; Kiyotaka Asakura

Chemical Physics Letters | 2007

Preparation of atomically dispersed Cu species on a TiO2 (110) surface premodified with an organic compound

Wang-Jae Chun; Yuichiro Koike; Kaoru Ijima; Keisuke Fujikawa; Hidenori Ashima; Masaharu Nomura; Yasuhiro Iwasawa; Kiyotaka Asakura

Journal of Physical Chemistry C | 2008

Origin of Self-Regulated Cluster Growth on the TiO2(110) Surface Studied Using Polarization-Dependent Total Reflection Fluorescence XAFS

Yuichiro Koike; Keisuke Fujikawa; Shushi Suzuki; Wang-Jae Chun; Kaoru Ijima; Masaharu Nomura; Yasuhiro Iwasawa; Kiyotaka Asakura

Journal of Physical Chemistry C | 2013

Au Clusters on TiO2(110) (1 × 1) and (1 × 2) Surfaces Examined by Polarization-Dependent Total Reflection Fluorescence XAFS

Wang-Jae Chun; Kotaro Miyazaki; Naoki Watanabe; Yuichiro Koike; Satoru Takakusagi; Keisuke Fujikawa; Masaharu Nomura; Yasuhiro Iwasawa; Kiyotaka Asakura

Journal of The Ceramic Society of Japan | 2011

Angle resolved total reflection fluorescence XAFS and its application to Au clusters on TiO2(110) (1 * 1)

Wang-Jae Chun; Kotaro Miyazaki; Naoki Watanabe; Yuichiro Koike; Satoru Takakusagi; Keisuke Fujikawa; Masaharu Nomura; Kiyotaka Asakura

Chemical Physics Letters | 2009

Atomically dispersed Cu species on a TiO2(110) surface precovered with acetic anhydride

Wang-Jae Chun; Yuichiro Koike; Hidenori Ashima; Kumiko Kinoshita; Kaoru Ijima; Keisuke Fujikawa; Shushi Suzuki; Masaharu Nomura; Yasuhiro Iwasawa; Kiyotaka Asakura

Chemistry Letters | 2004

A Possibility of XANAM (X-ray Aided Non-contact Atomic Force Microscopy)

Shushi Suzuki; Yuichiro Koike; Keisuke Fujikawa; Wang-Jae Chun; Masaharu Nomura; Kiyotaka Asakura

Chemical Physics Letters | 2013

Anisotropic growth of a nickel trimer formed on a highly-stepped TiO2(110) surface

Hiromitsu Uehara; Muhammad Haneef Bin Hanaffi; Yuichiro Koike; Keisuke Fujikawa; Shushi Suzuki; Hiroko Ariga; Satoru Takakusagi; Wang-Jae Chun; Yasuhiro Iwasawa; Kiyotaka Asakura

Explore More

Collaboration

Dive into the Keisuke Fujikawa's collaboration.

Top Co-Authors
Avatar

Kiyotaka Asakura

Hokkaido University

View shared research outputs
Top Co-Authors
Avatar

Yuichiro Koike

Hokkaido University

View shared research outputs
Top Co-Authors
Avatar

Wang-Jae Chun

International Christian University

View shared research outputs
Top Co-Authors
Avatar

Masaharu Nomura

KEK

View shared research outputs
Top Co-Authors
Avatar

Shushi Suzuki

Nagoya University

View shared research outputs
Top Co-Authors
Avatar

Yasuhiro Iwasawa

University of Electro-Communications

View shared research outputs
Top Co-Authors
Avatar

Kaoru Ijima

University of Yamanashi

View shared research outputs
Top Co-Authors
Avatar

Hidenori Ashima

Hokkaido University

View shared research outputs
Top Co-Authors
Avatar

Satoru Takakusagi

Hokkaido University

View shared research outputs
Top Co-Authors
Avatar

Hiroko Ariga

Hokkaido University

View shared research outputs
Explore More
Researchain Logo
Decentralizing Knowledge