Surface Physics and Characterization Group

2023.04.01 Update

*Past research group (Information as of the end of March 2023)

Surface Physics and Characterization Group aims at explication of the physical development used for state-of-the-art technology. The process of the surface reaction and the change of physical properties formed by a reaction are considered in physico-chemistry. If it's a project study of NIMS to run after the target which should be used for industry and near view-like, the goal of our group is to elucidate the physical development used by the project.

What's New?

Notice of group termination and our activities from April 2023

[March 2023] Surface Physics and Characterization Group will end on March 31, 2023.
From April 1, 2023, our group members will belong to In-situ Electron Microscopy Technique Group,
Advanced Materials Characterization Field, Center for Basic Research on Materials,
and will continue each research.
This website will remain as an archive.
Thank you very much to everyone who has visited this site so far.
Please look forward to our further achievement!

A paper co-authored by Miyauchi, Itakura, et al. was published in e-Journal of Surface Science and Nanotechnology

[March 2023] A paper co-authored by Miyauchi, Itakura, et al. was published in e-Journal of Surface Science and Nanotechnology.
"Classification of EBSD Kikuchi patterns for stainless steel by unsupervised learning methods to investigate grain boundaries"
S. Aoyagi, D. Hayashi, Y. Murase, N. Miyauchi, A. N. Itakura,
e-Journal of Surface Science and Nanotechnology 21 (2023)

The collaborative research with National Institute of Technology, Oita College (Kyushu)

[February to March 2023]  Our collaborative research with National Institute of Technology, Oita College (Oita Kosen) has been funded by "NIMS collaborative hub promotion program" since FY2020.
The theme is "structural analysis of hydrogen purification membrane and clarification of local diffusion."

From Feb. 27 to Mar. 3, two students from Oita Kosen stayed in Tsukuba, and conducted experiments and observation with NIMS staff, using operando hydrogen microscope.
Prof. Yoshihisa Matsumoto of Oita Kosen also joined experiment and discussion on March 2.

The students graduated Oita Kosen in the middle of this month and will enter graduate school next month.
We hope that their experiences at NIMS will be of some help in their future research activities.

For more information on "NIMS collaborative hub promotion program", please visit NIMS official website (in Japanese).

in the laboratory

in the lobby of Main Building, Sengen, NIMS

A paper by Yakabe, Miyauchi, Kitajima, Itakura, et al. was published in Vacuum and Surface Science

[March 2023] A paper by Miyauchi, Itakura, et al. was published in e-Journal of Surface Science and Nanotechnology.
"Hydrogen Sensing and Theoretical Understanding of Absorption Phenomena for Materials"
T. Yakabe, G. Imamura, G. Yoshikawa, N. Miyauchi, M. Kitajima, A. N. Itakura,
Vacuum and Surface Science 66, 114–119 (2023)

Internship at Surface Physics and Characterization Group

[August - September, 2022] The student from National Institute of Technology, Oita College (Kyushu) stayed with us for 20 days as NIMS Internship Program. He conducted experiments, measurement, analysis, discussions and so on with our group members.

We expect his graduation thesis will make progress through this internship program, and also, he will make the most of the experiences at NIMS in his future.

For more information on our internship program, please visit NIMS official website.

in the laboratory

in the courtyard

New members - updated

[April 2022] Please check the right column for our latest member list.

The collaborative research with National Institute of Technology, Oita College (Kyushu) in NIMS

[March 2022] Prof. Yoshihisa Matsumoto (National Institute of Technology, Oita College (Kyushu)) and his 3 students came to NIMS in the middle of March.
The students stayed in Tsukuba for 11 days.
During that period, they conducted experiments with NIMS staff, using operando hydrogen microscope and Auger electron spectroscope.

This collaboration is based on "NIMS collaborative hub promotion program", which has been going on since FY2020.
The research title is "structural analysis of hydrogen purification membrane and clarification of local diffusion".

We will promote our collaboration safely by mailing samples, online discussion, not only by onsite experiments.

in the meeting room

in the laboratory

Our research introduction movie in English

[March 2022] The English version of our research introduction movie (January 2019, in Japanese) has been released.

Observing hydrogen’s corrosive effects on metals with a unique microscope! - YouTube

The outline of the hydrogen microscope, which is attracting attention with the arrival of the hydrogen society, is introduced. Since the data is from 3 years ago, we will release a new video in the near future.

A paper co-authored by Miyauchi, Itakura, et al. was published in Vacuum and Surface Science

[October 2021] A paper co-authored by Miyauchi, Itakura,  et al. was published in Vacuum and Surface Science.
 "Hultimodal Data Analysis for Evaluating Hydrogen Diffusion in Steel"
S. Aoyagi, T. Akiyama, N. Suzuki, N. Miyauchi and A. N. Itakura,
Vacuum and Surface Science 64, 472–475 (2021), DOI: 10.1380/vss.64.472

Promotion of the member

[October 2021] Dr. Miyauchi was promoted to Senior Engineer.
From October, his main affiliation is Surface and Microbeam Analysis Group, Materials Analysis Station, Research Network and Facility Services Division.
Still, He is a member of Research Center for Advanced Measurement and Characterization, and is in charge of research on Operando Hydrogen Microscope.

Self introduction on October 11th, 2021

A paper by Yakabe, Miyauchi, Itakura, et al. was published in Scientific Reports

[September 2021] A paper by Yakabe, Miyauchi, Itakura,  et al. was published in Scientific Reports.
"2‑step reaction kinetics for hydrogen absorption into bulk material via dissociative adsorption on the surface"
T. Yakabe, G. Imamura, G.Yoshikawa, N. Myauchi, M. Kitajima & A. N. Itakura, 
Scientific Reports 11, 18836 (2021) DOI: 10.1038/s41598-021-98347-4

A paper by Onishi, Yakabe, Itakura, et al. was published in Vacuum and Surface Science

[September 2021] A paper by Onishi, Yakabe, Itakura,  et al. was published in Scientific Reports.
 "Aging Analysis of Reference Sample Surface Using Helium Ion Microscopy"
Keiko Onishi, Seiko Nagano, Daisuke Fujita, Taro Yakabe & Akiko N. Itakura,
Vacuum and Surface Science 64, 424-429 (2021) DOI https://doi.org/10.1380/vss.64.424 
 

The article about TIA Kakehashi commendation to Itakura appeared in The Science News (Japanese newspaper)

On July 23rd, 2021, The Science News, Japanese newspaper, posted the article about 5th debrief meeting of TIA Kakehashi.

【Summary of the article】
TIA, an open innovation hub, held the 5th debrief meeting of Kakehashi* on July 14th online.
*"Kakehashi" is the name of TIA collaborative research program.
In the meeting, 2 researchers were awarded for their respective achievements, and they delivered the commemorative lectures.

One of the topics was “Development of operando hydrogen microscope and its application”.
Dr. Akiko. N. Itakura of NIMS, the principal researcher of this project, was awarded, and gave a lecture.
Operando hydrogen microscope can detect hydrogen in metals. It is expected to be applied to other materials like ceramic, and also may be used to inspect modified surfaces.

The other topic was "Development of next generation medical technology by deciphering glycocode".
Dr. Hiroaki Tateno of AIST, the principal researcher of this project, was awarded, and gave a lecture.
With lectins (glycan receptors) which is used in glycan analysis, he worked on the development of drugs for pancreatic cancer. He confirmed the anti-tumor effect in mouse experiments, and currently is developing therapeutic and diagnostic drugs in collaboration with University of Tsukuba.

After these 2 lectures, achievements of 10 projects in FY2020 were reported.

The details of debrief session of TIA Kakehashi (in Japanese only)
https://www.tia-nano.jp/page/page000560.html

※Also, please refer to【Itakura’s Comment】 in the article below.

Itakura was awarded and gave the commemorative lecture at TIA Kakehashi debrief meeting

certificate of commendation

5th debrief meeting of TIA Kakehashi was held on Wednesday, July 14th, 2021, where Dr. A. N. Itakura, our group leader, was awarded for her achievement in the project.
She gave the commemorative lecture at the session, and it was webcasted via zoom.

For the details of debrief session of TIA Kakehashi (in Japanese only)
https://www.tia-nano.jp/page/page000560.html
About TIA Kakehashi (in English)
https://www.tia-nano.jp/page/page000328.html

【Itakura’s Comment】
TIA Kakehashi is based on collaborative research with several institutes.
I received the award as the representative of this project, which is based on the 2016 TIA Kakehashi research project, "Research on development of barrier/coating films evaluation
to inhibit adsorption, desorption, and permeation on the surface of material".

Participants (affiliation at the time of application in 2016)

AIST: Hajime Yoshida, Kenta Arai, Tokihiko Kobata
KEK: Kazuhiko Mase, Yasunori Tanimoto, Takashi Kikuchi
University of Tsukuba : Atsushi Kubo, Daiichiro Sekiba
University of Tokyo : Katsuyuki Fukutani
Toho University : Naoya Miyauchi, Shoji Takagi,
Seikei University: Takeo Nakano, Satoka Aoyagi
NIMS : Taro Yakabe, Yoshiharu Murase, Masahiro Tosa

A paper by Itakura, Miyauchi, Yakabe et al. was published in Scientific Reports

[April 2021] A paper by Itakura, Miyauchi and Yakabe was published in Scientific Reports.
"Model of local hydrogen permeability in stainless steel with two coexisting structures"
A. N. Itakura, N. Miyauchi, .Y Murase, T. Yakabe, M. Kitajima, S. Aoyagi, 
Scientific Reports, Vol.11, No. 8553 (2021) 

A paper co-authored by Itakura and Miyauchi was published in Materials Transactions

[Octorber 2020] A paper co-authored by Itakura and Miyauchi was published in Materials Transactions.
"Evaluation of Surface Damage of Pd Using Cross-Sectional Electron Backscatter Diffraction Analysis"
Y. Murase, N. Miyauchi, A. Itakura, H. Katayama, 
Materials Transactions, Vol. 62, No. 1 (2021) pp. 41-47

A paper by Shibata-Seki et al. was published in nature Scientific Reports

[October 2020] A paper by Shibata-Seki et al. was published in nature Scientific Reports.
"Direct visualization of the extracellular binding structure of E-cadherins in liquid"
Teiko Shibata-Seki, Masato Nagaoka, Mitsuaki Goto, Eiry Kobatake, Toshihiro Akaike,

The collaborative research with National Institute of Technology, Oita College (Kyushu), has started

Prof. Matsumoto (left) and his laboratory members

[September 2020] The collaborative research with Prof. Yoshihisa Matsumoto (in National Institute of Technology, Oita College (Kyushu)) and his laboratory members started in September 2020 under "NIMS collaborative hub promotion program".
The research title is "structural analysis of hydrogen purification membrane and clarification of local diffusion".
Our first meeting was on the web as professors and students cannot come to Tsukuba due to a novel coronavirus.
 
We are promoting our collaboration safely by mailing samples, and having discussion online.

A paper by Miyauchi et al. was published in Applied Surface Science

[May 2020] A paper by  Miyauchi et al. was published in Applied Surface Science.
"Visualization of local hydrogen diffusion in stainless steel using time resolved electron stimulated desorption"
Naoya Miyauchi, Tomoya Iwasawa, Yoshiharu Murase, Taro Yakabe, Masahiro Kitajima, Shoji Takagi, Tomomi Akiyama, Satoka Aoyagi, Akiko N. Itakura,  

A paper co-authored by Itakura and Miyauchi has been published in Vacuum Science Technology B

[April 2020] A paper co-authored by Itakura and Miyauchi has been published in Vacuum Science Technology B.
"Fusion data analysis of imaging data of hydrogenpermeated steel obtained by complementary methods"
Tomomi Akiyama,  Naoya Miyauchi,  Akiko N. Itakura, Takayuki Yamagishi, and  Satoka Aoyagi,

A paper by Yakabe et al. was published in Journal of Physics Communications

[February 2020] A paper by Yakabe et al. was published in Journal of Physics Communications.
 "Hydrogen detection using membrane-type surface stress sensor"
Taro Yakabe, Gaku Imamura, Genki Yoshikawa, Masahiro Kitajima Akiko N. Itakura,

A paper by Miyauchi et al. was published in Applied Surface Science

[June 2019] A paper by Miyauchi et al. was published in Applied Surface Science.
 Visualization and characterization of localized outgassing position on surface-treated specimens: Chromium oxide layer on stainless steel
Naoya Miyauchi, Tomoya Iwasawa, Taro Yakabe, Masahiro Tosa, Toyohiko Shindo, Shoji Takagi, Akiko N. Itakura,

Tomoya Iwasawa received JVSS Student Award!

Tomoya Iwasawa, NIMS Junior Researcher/Graduate student of University of Tsukuba, has received Student Award from the Japan Society of Vacuum and Surface Science (JVSS).
This award was given to his excellent poster presentation titled "Observation of behavior of deuterium permeated through stainless steel" at 2018 Symposium of JVSS (Oct. 2018, in Kobe, Japan).
 
The award ceremony was held in May 2019 at University of Tokyo.

At the award ceremony. The 4th person from the left is Mr. Iwasawa.

At Interface Science Laboratories, NIMS.

NIMS Video Introducing Our Research

On NIMS official website, you can watch the video produced by NIMS.
Here is the one titled "Visualize the distribution of hydrogen in materials - Development of one and only microscope -" (in Japanese).  Dr. Itakura and Dr. Miyauchi are introducing the outline of research. 

*The video is protected under copyright low.

Other information

 Please see "Bulletin Board" down below.

Specialized Research Field

The research subjects progressing at present are as below:
 
  • Study phenomena which occur at surfaces and interfaces, using the methods like electron spectroscopy, surface stress, and measurement of trace elements emission, etc.
  • Develop sensors of gas molecules or protein molecules from the stresses of reactive thin films as adsorbent of the target molecules.
  • Visualize hydrogen outgassing from a metal surface, and elucidate the behavior of hydrogen in materials, so that we can contribute to “hydrogen energy society”.

Research Topics: Development of Operando Hydrogen Microscope

Hydrogen in metals causes hydrogen embrittlement, which is the process of various metals to become brittle and fracture. We have been investigating hydrogen behavior in metal alloys by observing two-dimensional hydrogen distribution on metal surface using a method of DIET (Desorption Induced by Electronic Transition), membrane sample, and hydrogen supplying system from backside of the sample.

■What's Operando Hydrogen Microscope?

It is a microscope to visualize hydrogen using DIET (Desorption Induced by Electronic Transition) method. It picks up week and small signals with integration measurement for a long time.

We have made that possible by using a certain hydrogen supply type and pulse counting detection system. It has no damage on a sample, and it gets hydrogen pictures in real time measurement (Fing.1, 2).

Also, it detects time dependence of hydrogen desorption, temperature dependence, hydrogen gas pressure dependence (hydrogen supplying pressure to the backside of a sample), and other gas dependence (humidity, oxygen, etc.).　

* Sometimes, the DIET phenomenon is called "ESD; electron stimulated desorption". ESD is included in DIET. 

Fig.1. Schematic image of SEM and DIET experiment

Fig.2. Experimental set up of the two dimensional detection system of Hydrogen permeation

■Hydrogen Map of Permeated Hydrogen on Stainless Steel (SUS304).

Fig. 3 shows the SEM picture and H map (DIET image) on SUS 304 steel at 473K. In SEM pictures, austenite grains in the order of 100 μm size are confirmed. Stripes in a grain suggest martensite dislocations, and such grains look dark. Depending on the time, the relationship of hydrogen map and the SEM image are varied. 

Fig.3. (a) SEM picture. White circles are on triple-points and multiple-points of grain boundary. (b) DIET hydrogen image after 3 h from hydrogen supply to the backside of sample. White circles are on the same position with (a).

We focused on the initial stage of hydrogen permeation.

Fig. 3 shows the DIET map at 3 h after the initial backside exposure. There are several sites of relatively high hydrogen concentration in this time period, marked by circles in the figure.
According to the one-dimensional diffusion equation, the permeation time of hydrogen through a 100 μm austenite membrane is calculated to be more than 4 h. This indicates that the rapid permeation of hydrogen does not take a path through austenite.

Considering the permeation path by comparing the DIET map with the SEM image, we found that the areas of high hydrogen concentration were the areas with high density of grain boundaries which were gathered or crossed.  

Fig.4. (a) SEM picture and (b) H distribution on the same area with (a). Ion counts of each position are the sum of 550 pictures measured for 55 h. Handwritten lines are added on the grain boundary to make the image easier to see.

Let's compare the SEM and DIET image, focusing on the bright grains in the SEM (Fig. 4 (a) and (b)).

The grain shape in the SEM image corresponded with a high yield shape of hydrogen. In other words, it's making good agreement with hydrogen permeation.
The hydrogen diffusion constant is larger in the striped part in gray grains than that in the bright grains; that is larger in the martensite structure than in the austenite structure.

Howeber, some of the striped grains do not show a high concentration of hydrogen. We considered the paths of hydrogen through the membrane (sample thickness, 100μm; grain size, 100–150μm). 
 We assumed 4 types of hydrogen path through the sample membrane: (a) hydrogen diffusing through a single striped grain (austenite grain with martensite dislocations), (b) hydrogen diffusing through a single austenite grain, (c) hydrogen diffusing from a striped grain to an austenite grain, and (d) hydrogen diffuse through grain boundaries,  (Fig.5).

In addition, the flow rate of hydrogen should differ according to the crystallographic orientation because each crystallographic face has an intrinsic atomic density. 

By using electron backscatter diffraction (EBSD) patterns as a reference, we have found instances where more than two grains existed in what appeared as a single grain in a SEM image. EBSD can determine the structure of the grains and the orientation of the crystals.
Also, the orientation of the adjacent grains is very important when considering the structure of the grain boundary, which is expected to influence hydrogen permeation through the grain boundary.

In the future, we intend to compare the DIET mapping of hydrogen with structural analysis including EBSD measurements.

Related File / Link

Research Topics: Gas Sensing and Molecule Sensing

■Hydrogen Gas Sensing with Pd Alloy.

In preparation (Patent pending 2017-155808,Patent pending 2019-40136, Japan)

■Protein Sensing with Molecule Imprinted Polymer.

In preparation.

Research Topics: From a research sample to practical devices -Evolution of characterization

Multi-dimensional mapping of GaN:Eu red LED

Photoluminescence is the first screening technique for luminescent semiconductors. Despite that, the actual opto-electronic devices are operated with charges (current) rather than light. 
Recently, we developed a multi-dimensional mapping technique for light emitting diodes (LED). The mapping that adopts pulse-driven frequency as an axis revealed a nanoscale luminescence mechanism in GaN:Eu LED (a next-generation GaN-based red LED: Produced by Osaka University), and clarified interactions between emission centers and injection charges, which were different from interactions in the photoluminescence.

Related File / Link

Bulletin Board

News and Information of Research Center

Surface Physics and Characterization Group belongs to Research Center for Advanced Measurement and Characterization (RCAMC) of NIMS.
Please click here for the latest information of RCAMC.

Research Outline in NIMS Newsletter

The outline of Dr. Itakura’s research was introduced in NIMS NOW, the newsletter of NIMS.
You can access the international version article via NIMS website.

NIMS NOW International Vol. 16, No.3, Research Highlight4
Title: "Identifying hydrogen pathways using a microscope capable of measuring diffused hydrogen"

Report of Workshop 2016

A workshop “Solution to quenching problems of nano opto-electronic materials in international framework” was held in Kyoto University on August 19th, 2016. For more details, please come to the workshop homepage.

Recent Publications

The list of recent papers and books. The other publications can be checked with the Related Link "NIMS Researchers Database" at the bottom of the list or "Group Member" at the top of this page.

2023
  • T. Yakabe, G. Imamura, G. Yoshikawa, N. Miyauchi, M. Kitajima, A. N. Itakura, "Hydrogen Sensing and Theoretical Understanding of Absorption Phenomena for Materials" Vacuum and Surface Science. 66, 114–119 (2023) https://doi.org/10.1380/vss.66.114
  • S. Aoyagi, D. Hayashi, Y. Murase, N. Miyauchi, A. N. Itakura, "Classification of EBSD Kikuchi patterns for stainless steel by unsupervised learning methods to investigate grain boundaries" e-Journal of Surface Science and Nanotechnology 21 (2023) https://doi.org/10.1380/ejssnt.2023-023

2021
  • S. Aoyagi, T. Akiyama, N. Suzuki, N. Miyauchi and A. N. Itakura, "Multimodal Data Analysis for Evaluating Hydrogen Diffusion in Steel" Vacuum and Surface Science. 64, 472–475 (2021) DOI: 10.1380/vss.64.472
  • T. Yakabe, G. Imamura, G.Yoshikawa, N. Myauchi, M. Kitajima & A. N. Itakura, "2‑step reaction kinetics for hydrogen absorption into bulk material via dissociative adsorption on the surface " Scientific Reports. 11, 18836 (2021) DOI: 10.1038/s41598-021-98347-4
  • Keiko Onishi, Shoko Nagano, Daisuke Fujita, Taro Yakabe and Akiko N. Itakura,  "Aging Analysis of Reference Sample Surface Using Helium Ion Microscopy" Vacuum and Surface Science. 64, 424-429 (2021) DOI https://doi.org/10.1380/vss.64.424
  • A. N. Itakura, N. Miyauchi, Y. Murase, T. Yakabe, M. Kitajima, and S. Aoyagi. “Model of local hydrogen permeability in stainless steel with two coexisting structures” Scientific Reports 11, 8553 (2021) DOI: 10.1038/s41598-021-87727-5
  • Yoshiharu Murase, Naoya Miyauchi, Akiko Itakura, Hideki Katayama, "Evaluation of Surface Damage of Pd Using Cross-Sectional Electron Backscatter Diffraction Analysis" MATERIALS TRANSACTIONS. 62 [1] (2021) 41-47 10.2320/matertrans.mt-m2020220

2020
  • Taro Yakabe, Gaku Imamura, Genki Yoshikawa, Masahiro Kitajima, Akiko N Itakura,“Hydrogen detection using membrane-type surface stress sensor” Journal of Physics Communications. 4 [2] (2020) 025005 10.1088/2399-6528/ab7319
  • Akiko N Itakura, "Time resolved visualization of permeated hydrogen through metal materials" Journal of Japan Institute of Light Metals 70, 556-561 (2020)  DOI: 10.2464/jilm.70.556
  • Teiko Shibata-Seki, Masato Nagaoka, Mitsuaki Goto, Eiry Kobatake, Toshihiro Akaike, "Direct visualization of the extracellular binding structure of E-cadherins in liquid" nature Scientific Reports (2020) 10, 17044 10.1038/s41598-020-72517-2
  • Naoya Miyauchi, Tomoya Iwasawa, Yoshiharu Murase, Taro Yakabe, Masahiro Kitajima, Shoji Takagi, Tomomi Akiyama, Satoka Aoyagi, Akiko N. Itakura, “Visualization of local hydrogen diffusion in stainless steel using time resolved electron stimulated desorption” Applied Surface Science. 527 (2020) 146710 10.1016/j.apsusc.2020.146710
  • Tomomi Akiyama, Naoya Miyauchi, Akiko N. Itakura, Takayuki Yamagishi, Satoka Aoyagi, “Fusion data analysis of imaging data of hydrogen-permeated steel obtained by complementary methods” Journal of Vacuum Science & Technology B. 38 [3] (2020) 034007 10.1116/6.0000

2019
  • Naoya Miyauchi, Tomoya Iwasawa, Yoshiharu Murase, Shoji Takagi, Akiko N. Itakura, “Observation of Metal Surface by Operando Hydrogen Microscope” Vacuum and Surface Science 62 [1] (2019) 27-32 10.1380/vss.62.27
  • Naoya Miyauchi, Tomoya Iwasawa, Taro Yakabe, Masahiro Tosa, Toyohiko Shindo, Shoji Takagi, Akiko N. Itakura, “Visualization and characterization of localized outgassing position on surface-treated specimens: Chromium oxide layer on stainless steel” Applied Surface Science 492 (2019) 280-284 10.1016/j.apsusc.2019.06.172
  • Tomoya Iwasawa, Naoya Miyauchi, Takagi Shoji, Yoshiharu Murase, Yoichi Yamada, Akiko N. Itakura, Masahiro Sasaki,“Observation of behavior of deuterium permeated through stainless steel” Vacuum and surface science (2019) 635-640 10.14886/sssj2008.2018.0_142
     
2018
  • A. N. Itakura, M. Tosa, T. Yakabe, N. Miyauchi, A. Kasahara, T. Miyata, T. Shindo, “Low Outgas Surface Treatment of Stainless Steel 316L Using Segregated Chromium Oxide Layer” Vacuum and Surface Science 61 [10] (2018) 675-680 10.1380/vss.61.675
  • Masaya Toda, Koji Miyake, Li-Qiang Chu, Marjan Zakerin, Renate Förch, Rüdiger Berger, Akiko N. Itakura, “Young's modulus of plasma-polymerized allylamine films using micromechanical cantilever sensor and laser-based surface acoustic wave techniques” Plasma Processes and Polymers 15 [9] (2018) 1800083 10.1002/ppap.201800083
  •  N. Miyauchi, K. Hirata, Y. Murase, H. A. Sakaue, T. Yakabe, A. N. Itakura, T. Gotoh, Shoji Takagi, “2D Mapping of Hydrogen Permeation from a Stainless Steel Membrane” SCRIPTA MATERIALIA 144 (2018) 69-73 10.1016/j.scriptamat.2017.09.026
  • A. N. Itakura, N. Miyauchi, et al., Compendium of Surface and Interface Analysis, Springer (2018)

2017
  • F. Lu, T. Takaya, K. Iwata, I. Kawamura, A. Saeki, M. Ishii, K. Nagura, T. Nakanishi, “A Guide to Design Functional Molecular Liquids with Tailorable Properties using Pyrene-Fluorescence as a Probe” SCIENTIFIC REPORTS 7 (2017) 3416-1-3416-12 10.1038/s41598-017-03584-1
  • A. N. Itakura, N. Miyauchi, Y. Murase, S. Takagi, “Development of Operand Hydrogen Microscope”(in Japanese) The Piping Engineering 59 [13] (2017) 14-18
  • M. Kubo, E. Nango, K. Tono, T. Kimura, S. Owada, C. Song, F. Mafune, K. Miyajima, Y. Takeda, J. Kohno, N. Miyauchi, T. Nakane, T. Tanaka, T. Nomura, J. Davidsson, R. Tanaka, M. Murata, T. Kameshima, T. Hatsui, Y. Joti, R. Neutze, M. Yabashi, S. Iwata, “Nanosecond pump-probe device for time-resolved serial femtosecond crystallography developed at SACLA”JOURNAL OF SYNCHROTRON RADIATION 24 (2017) 1086-1091 10.1107/s160057751701030x
  • F. Mafune, Y. Takeda, J. Kohno, K. Tono, K. Miyajima, N. Miyauchi,“Reduction of Sample Consumption by Factor of Ten Using Droplet Injector for Serial Femtosecond Crystallography”(in Japanese) JOURNAL OF JAPAN LASER PROCESSING SOCIETY 24 [2] (2017) 51-55
  • A. N. Itakura, The Report on Topical Meeting of the Vacuum Society of Japan in June 2017 “Low Temperature Science and Vacuum Science” Journal of the Vacuum Society of Japan 60 [10] (2017) 410-411 10.3131/jvsj2.60.410
  • A. N. Itakura, “The Future Plan of Gender Equality Promotion in JPS” (in Japanese) Butsuri 72 [6] (2017) 383-383 https://doi.org/10.11316/butsuri.72.6_383

2016
  • M. Ishii, “Probe of "non-luminescence" processes” (in Japanese) OYO BUTURI. 85 [3] (2016) 223-227
  • M. Paven, R. Fuchs, T. Yakabe, D. Vollmer, M. Kappl, A. N. Itakura, H-J B. Mechanical, “Properties of Highly Porous Super Liquid-repellent Surfaces” ADVANCED FUNCTIONAL MATERIALS 26 [27] (2016) 4914-4922 10.1002/adfm.201600627
  • M. Ishii, A. Koizumi, and Y. Fujiwara, “Dimerization of emission centers in Eu-doped GaN red light emitting diode: Cooperative charge capturing using valence states coupling” Journal of Physics: Condensed Matter 29, 025702 (2017) doi:10.1088/0953-8984/29/2/025702
  • M. Ishii, A. Koizumi, Y. Fujiwara, “Trapping of injection charges in emission centers of GaN:Eu red LED characterized with 1/f noise involved in forward current” Jpn. J. Appl. Phys. 55[1] (2016) 015801-1 DOI:10.7567/JJAP.55.015801
  • A. N. Itakura, “The future of the Gender Equality Promotion in JPS” Butsuri 71 [4] (2016) 203-203 https://doi.org/10.11316/butsuri.71.4_203

2015
  • Y. Kamon, Y. Kitayama, A. N. Itakura, K. Fukazawa, K. Ishihara, T. Takeuchi, “Synthesis of grafted phosphorylcholine polymer layers as specific recognition ligands for C-reactive protein focused on grafting density and thickness to achieve highly sensitive detection” Phys. Chem. Chem. Phys. 17[15] (2015) 9951-9958 DOI:10.1039/c5cp00469a
  • A. N. Itakura, “Vacuum Components and Movable Mechanism”(in Japanese) JOURNAL OF THE VACUUM SOCIETY OF JAPAN 58[8] (2015) 282-291 10.3131/jvsj2.58.282
  • N. Miyauchi, S. Suzuki, S. Takagi, T. Gotoh, Y. Murase, A. N. Itakura, “Electron Stimulated Desorption Measurement of Permeated Hydrogen through Stainless Steel Membrane”(in Japanese) JOURNAL OF THE VACUUM SOCIETY OF JAPAN 58[10] (2015) 387-391 10.3131/jvsj2.58.387
  • A. N. Itakura,“曇らない鏡の秘密　他 (The secret of non-fogging mirror, etc.)” すごいぞ ! 身のまわりの表面科学 (ブルーバックス, paperback) (in Japanese) (2015) 12-16
  • M. Ishii, A. Koizumi, Y. Fujiwara, “Nanoscale determinant to brighten up GaN:Eu red LED: Local potential of Eu-defect complexes” J. Appl. Phys. 117[15] (2015) 155307-1 DOI:10.1063/1.4918662
  • M. Ishii, S. Fuchi, Y. Takeda, “Interaction of Nd dopants with broadband emission centers in Bi2O3?B2O3 glass: Local energy balance and its influence on optical properties” J. Phys.-Condes. Matter 27[39] (2015) 395402-1 DOI:10.1088/0953-8984/27/39/395402
  • M. Ishii, A. Koizumi, Y. Fujiwara, “Three-dimensional spectrum mapping of bright emission centers: investigating the brightness-limiting process in Eu-doped GaN red light emitting diodes” Appl. Phys. Lett. 107[8] (2015) 082106-1 DOI:10.1063/1.4929531

Related File / Link

Group Leader

Akiko N. ITAKURA(Open in a new window)

Group Member

Taro YAKABE(Open in a new window)

Keiko ONISHI(Open in a new window)

Naoya MIYAUCHI (concurrent)(Open in a new window)

Masashi ISHII (concurrent)(Open in a new window)

  • Masahiro KITAJIMA
  • Tomoko KUSAWAKE(Open in a new window)
  • Kaname INAISHI

    • Inquiry about this page

    Surface Physics and Characterization Group
    1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, JAPAN
    E-Mail: INAISHI.Kaname=nims.go.jp(Please change "=" to "@")