Article
Materials Science, Coatings & Films
D. Gutnik, A. Kleinbichler, P. J. Imrich, M. J. Cordill, A. Lassnig
Summary: Quantification of adhesion between thin films and their substrates is crucial for reliable multi-material components. Metal-polymer interfaces are challenging to quantify due to their unique properties. In this study, the adhesion of a 150 nm WTi film to polyimide was determined experimentally, and two models were compared for quantification.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Chemistry, Physical
Xinran Zhang, Jiangang Guo, Weigao Zhao
Summary: The adhesion force between a single phenyl ring and monolayer graphene was measured and calculated through experimental and theoretical methods. The single-bond force played a key role in the desorption process and can be divided into two stages.
APPLIED SURFACE SCIENCE
(2021)
Article
Nanoscience & Nanotechnology
F. Giannazzo, R. Dagher, E. Schiliro, S. E. Panasci, G. Greco, G. Nicotra, F. Roccaforte, S. Agnello, J. Brault, Y. Cordier, A. Michon
Summary: The integration of graphene with nitride semiconductors was achieved through chemical vapor deposition on AlGaN/sapphire templates, resulting in a uniform and conformal coverage that prevented degradation of AlGaN morphology. The chemical modification and nanocrystalline structure of graphene and its properties were thoroughly investigated, revealing potential applications in high-power/high-frequency electronics and optoelectronics.
Article
Nanoscience & Nanotechnology
Irek E. Roslon, Aleksandre Japaridze, Peter G. Steeneken, Cees Dekker, Farbod Alijani
Summary: Motion is a key characteristic of every form of life. Bacteria colonies at the microscale can generate nanomotion on mechanical cantilevers, but the origin of these nanoscale vibrations has remained unresolved. This study presents a new technique using drums made of ultrathin bilayer graphene to measure the nanomotion of single bacteria. The findings suggest that bacterial flagella is the main source of nanomotion and demonstrate the potential of graphene drums for single-cell antibiotic susceptibility testing.
NATURE NANOTECHNOLOGY
(2022)
Article
Chemistry, Physical
Tawfik A. Saleh, K. Haruna, Abdul-Rashid Mohammed
Summary: Acidizing is a method to enhance oil production but exposes carbon steel well to corrosion. Using an environmentally friendly corrosion inhibitor can effectively protect steel surface from corrosive attack.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Materials Science, Multidisciplinary
Georg Zagler, Maximilian Stecher, Alberto Trentino, Fabian Kraft, Cong Su, Andreas Postl, Manuel Laengle, Christian Pesenhofer, Clemens Mangler, E. Harriet Ahlgren, Alexander Markevich, Alex Zettl, Jani Kotakoski, Toma Susi, Kimmo Mustonen
Summary: Substituting heteroatoms into graphene can tune its properties for various applications. Recent discovery shows that covalent impurities in graphene can be manipulated at atomic precision. This study reports the vacancy-mediated substitution of aluminium into laser-cleaned graphene and investigates their dynamics under electron irradiation. The results show good agreement with predictions and reveal interesting findings.
Article
Materials Science, Paper & Wood
Kenta Morita, Musashi Takenaka, Kohei Tomita, Jun Ishii, Hideo Kawaguchi, Daisuke Murakami, Hikaru Amo, Miku Fujii, Tatsuo Maruyama, Takuya Matsumoto, Takashi Nishino, Chiaki Ogino
Summary: Cellulose has been developed as a sustainable alternative to petrochemical materials. Lignocellulose nanofibers (LCNFs) show promise as they are produced from biomass with mild pretreatment. This study developed two methods to detect and visualize lignin in LCNFs, revealing its microscopic location and providing a strong tool for analyzing lignin-containing materials.
Article
Materials Science, Ceramics
Kevin Pachuta, Halyna Volkova, Benjamin Hirt, Marie-Helene Berger, Emily Pentzer, Alp Sehirlioglu
Summary: Two-dimensional materials have attracted attention for their unique properties, and research into their processing and scalability is crucial for next-generation technologies. A liquid-phase exfoliation method has been developed to produce multilayer cobalt oxide nanosheets in pH-neutral aqueous solutions, with their size, thickness, and morphology confirmed using microscopy techniques.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Nanoscience & Nanotechnology
Nan Liu, Yi Cao, Yin-Lian Zhu, Yu-Jia Wang, Yun-Long Tang, Bo Wu, Min-Jie Zou, Yan-Peng Feng, Xiu-Liang Ma
Summary: The study presents a self-assembled uniform biphasic system as a potential stable and enduring RRAM medium, demonstrating advantages in stability, uniformity, and durability for further application in RRAM devices.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Kunmo Koo, Jungjae Park, Sanghyeon Ji, Saltanat Toleukhanova, Jong Min Yuk
Summary: The recent development of liquid-phase transmission electron microscopy, especially the novel liquid-flowing graphene chip TEM (LFGC-TEM), shows great potential in providing atomic resolution imaging for colloidal nanoparticles and molecular-level information for unstained wet biomolecules and cells. The robustness and capability of LFGC-TEM could lead to breakthroughs in live imaging of biological phenomena that are not currently achievable with existing methods.
ADVANCED MATERIALS
(2021)
Article
Construction & Building Technology
Yuhong Wang, Kecheng Zhao, Fangjin Li, Qi Gao, King Wai Chiu Lai
Summary: This study investigated the presence of asphaltenes in different types of asphalt and their impacts on the asphalt properties. It was found that the dispersion and formation of asphaltene particles vary depending on the asphalt source, with asphaltene content playing a predominant role in determining viscosity and asphaltene morphology likely affecting the derived ductility of asphalt.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Materials Science, Paper & Wood
Claudia Gusenbauer, Karolina Peter, Etienne Cabane, Johannes Konnerth
Summary: Chemical force microscopy allows visualization of chemical nano-properties of materials and analysis of their surface behavior, making it valuable for studying natural substrates like wood. By studying adhesion forces and pK(a) values, this method provides insights into the complex chemical surface properties of materials.
Article
Chemistry, Physical
Satoshi Ishii, Shogo Yoshimoto, Katsutoshi Hori
Summary: The research showed that Acinetobacter sp. Tol 5 has strong adhesion force, mainly achieved through the interaction between the AtaA protein on the cell surface and the surface. This adhesion force increases with the increase of AtaA molecules. Amino acid hydrolysates and deionized water can inhibit the direct interaction between cells and surfaces, respectively.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Microscopy
Sota Hirokawa, Hideaki Teshima, Pablo Solls-Fern, Hiroki Ago, Qin-Yi Li, Koji Takahashi
Summary: Despite the use of graphene liquid cells for atomic-resolution observation of liquid samples, no one has measured their three-dimensional shape and pressure simultaneously. In this study, we used an atomic force microscope to do so for cells with specific dimensions. We found an inverse relationship between the maximum pressure and the base radius, which can be explained by the adhesive force between graphene membranes. Additionally, the sample preparation procedure used in this experiment is reproducible and transferable to different substrates.
Article
Materials Science, Multidisciplinary
Cheng-Sao Chen, Pin-Yi Chen, Wei Sea Chang, Carvyn Blaise, Yi Lin Hsieh, R. R. Chien, V. Hugo Schmidt, Yi-Shin Jou, Chi-Shun Tu
Summary: This study investigates the nano-to-micro domain structure, polarization switching, and electromechanical mechanisms in lead-free perovskite bismuth ferrite near the morphotropic phase boundary. The coexistence of ferroelectric and antiferroelectric symmetries, along with the presence of polar nano-regions and domain boundaries, were identified as the system crossed the MPB. The O 2p-Fe 3d and O 2p-Bi 6s(p) orbital hybridization were found to play key roles in the evolution of structural distortion, polarization, and electromechanical properties.
MATERIALS RESEARCH BULLETIN
(2021)