Journal of Surface Analysis

Preface

To Live an Exciting Life in an Unexciting World

Katsuaki Yanagiuchi

2022 Volume 28 Issue 2 Pages 85
Published: February 10, 2022
Released on J-STAGE: October 01, 2022

DOIhttps://doi.org/10.1384/jsa.28.85

JOURNAL FREE ACCESS

Download PDF (163K)

Commentaty

Interface Microstructure Welded by Ultrasonic Welding

Chihiro Iwamoto

2022 Volume 28 Issue 2 Pages 86-93
Published: February 10, 2022
Released on J-STAGE: October 01, 2022

DOIhttps://doi.org/10.1384/jsa.28.86

JOURNAL FREE ACCESS

Show abstractHide abstract

Ultrasonic welding is widely used as one of the excellent solid-state weldings. However, the mechanism of the welding has not been clarified enough. This report discussed the welding mechanism of advanced Mg alloys, and the Cu multiwire and the substrate based on the microstructure investigation. Development of in-situ TEM observation technique for ultrasonic welding was reported as well, and nanoparticle formation and accumulation process were shown.

View full abstract

Download PDF (1034K)
Interface Analyses by Sum-Frequency Generation Spectroscopy

Takayuki Miyamae

2022 Volume 28 Issue 2 Pages 94-101
Published: February 10, 2022
Released on J-STAGE: October 01, 2022

DOIhttps://doi.org/10.1384/jsa.28.94

JOURNAL FREE ACCESS

Show abstractHide abstract

Sum-frequency generation (SFG) spectroscopy is well-known as the surface and/or interface selective vibrational spectroscopic technique. In this paper, we present an application of SFG spectroscopy, especially for the analysis of surfaces and interfaces related to adhesion.

View full abstract

Download PDF (1135K)
Analytical Technologies for Metal-Adhesive Joining

Yusuke Takahashi

2022 Volume 28 Issue 2 Pages 102-109
Published: February 10, 2022
Released on J-STAGE: October 01, 2022

DOIhttps://doi.org/10.1384/jsa.28.102

JOURNAL FREE ACCESS

Show abstractHide abstract

Adhesion strength and its stability of metals strongly depend on a surface condition of adherent, like oxide layer thickness, its chemical state, and adsorbate, which often cause failure of adhesion. Therefore, analytical technologies for metal surface and adhesion interface play an important role to control adhesive joining strength and its stability. This article reviews a series of study of metal surface condition, its adhesion performance, and analytical results of its surface and adhesion interface.

View full abstract

Download PDF (966K)

Paper

The Analysis of Polymer Sample TOF-SIMS Data Using Autoencoder

Masaru Ito, Kazuhiro Matsuda, Satoka Aoyagi

2022 Volume 28 Issue 2 Pages 110-126
Published: February 10, 2022
Released on J-STAGE: October 01, 2022

DOIhttps://doi.org/10.1384/jsa.28.110

JOURNAL FREE ACCESS

Show abstractHide abstract

Time-of-flight secondary ion mass spectrometry （TOF-SIMS） data are generally so complex that multivariate analysis such as principal component analysis （PCA） and multivariate curve resolution （MCR） are often necessary to interpret TOF-SIMS data. Interpreting more complex TOF-SIMS data requires further data analysis methods using machine learning and deep learning. In this study, the application of autoencoder which is one of the unsupervised methods based on artificial neural networks into TOF-SIMS data of three polymers was evaluated.

View full abstract

Download PDF (4068K)

Postscript

Postscript

2022 Volume 28 Issue 2 Pages 158
Published: February 10, 2022
Released on J-STAGE: October 01, 2022

DOIhttps://doi.org/10.1384/jsa.28.158

JOURNAL FREE ACCESS

Download PDF (197K)

Register with J-STAGE for free!