Article
Chemistry, Physical
Yue Hong, Deliang Zhang, Zhiliang Gao, Yuge Zhang, Qiang Li, Mingdong Dong
Summary: Researchers report the direct experimental construction of a two-dimensional ice-like water layer on a hydrophilic surface at room temperature without confinement, demonstrating that the prevailing view of nanoscale confinement for 2D ice-like water formation is not necessary. The ice-like water layer shows epitaxial relation with the underlying mica lattice and good thermostability, and its growth can be well controlled by mechanical force. The friction properties of the ice-like water layer are also found to be significantly reduced.
Article
Polymer Science
David Burgess, Na Li, Nicole Rosik, Peter J. Fryer, Ian McRobbie, Haining Zhang, Zhenyu J. Zhang
Summary: A surface-grafted polymer brush reduces interfacial friction in dodecane and water by distinctively adopting different conformations, providing new insight into polymer lubrication mechanism.
Article
Engineering, Chemical
Alper Ozogul, Benedykt R. Jany, Franciszek Krok, Enrico Gnecco, Mehmet Z. Baykara
Summary: Friction experiments were conducted on oxidized platinum nanoislands on highly oriented pyrolytic graphite substrates using atomic force microscopy. The oxidation of the platinum nanoislands increased friction forces, attributed to an increase in chemical interaction forces between the oxidized platinum and the graphite substrate.
Article
Chemistry, Physical
Matthew D. Biviano, Lukas J. Boni, Joseph D. Berry, Peter Fischer, Raymond R. Dagastine
Summary: Hypothesis suggests that understanding interfacial rheology can provide insights into the mechanical properties of adsorption layers on liquid-liquid interfaces, impacting the stability of emulsion droplets. Experiments using AFM to probe the time-dependent interfacial rheological behavior compared results with established techniques like ISR and dilational pendant drop tensiometry, revealing differences in viscoelastic moduli due to varying flow fields and deformation levels.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Physical
Shaohong Luo, Tamador Alkhidir, Sharmarke Mohamed, Shoaib Anwer, Baosong Li, Jing Fu, Kin Liao, Vincent Chan
Summary: This study systematically investigates the adhesive interfacial interactions of 2D heterogeneous materials and measures the adhesion energy of different interfaces. The results reveal that the charge density distribution from the oxygen species of graphene is responsible for the enhancement of the adhesive energy of the Ti3C2Tx-GO heterointerface.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Yi Xu, Youquan Jia, Carlo Antonini, Yakang Jin, Longquan Chen
Summary: By immersing substrate-supported polymeric nanofilms in water, interfacial nanoblisters are formed as natural platforms for evaluating their mechanical properties. High-resolution force spectroscopy studies reveal that indentation tests must be conducted on the freestanding region around the nanoblister apex under an appropriate loading force to obtain load-independent, linear elastic deformations. The stiffness of the nanoblister increases with decreasing size or increasing covering film thickness, and this size effect can be explained by an energy-based theoretical model. This proposed methodology can provide an exceptional determination of the elastic modulus of the film and has potential applications in relevant fields.
Article
Polymer Science
Liliana Porojan, Roxana Diana Vasiliu, Mihaela Ionela Birdeanu, Sorin Daniel Porojan
Summary: The study aimed to investigate the effect of different surface treatments on the surface morphology of different resin composite materials. The results showed that sandblasting, tribochemical treatment, and etching could increase surface roughness, while polishing and glazing could make the surface smoother. Surface roughness values were within clinically acceptable limits for all tested methods.
Article
Multidisciplinary Sciences
Binze Tang, Yizhi Song, Mian Qin, Ye Tian, Zhen Wei Wu, Ying Jiang, Duanyun Cao, Limei Xu
Summary: With the help of machine learning, a new method is proposed to interpret atomic force microscopy images of complex systems, such as interfacial water/ionic hydrates. This method allows for precise identification of atomic structures, including atom positions and water molecule orientations. It also demonstrates the cost-effective use of transfer learning for structure prediction.
NATIONAL SCIENCE REVIEW
(2023)
Article
Materials Science, Composites
Chenchen Tian, Jiansen Cui, Nanying Ning, Liqun Zhang, Ming Tian
Summary: The surface topography and interfacial properties of carbon black (CB) in rubber composites were studied using atomic force microscopy (AFM) and quantitative nanomechanical mapping (QNM) technique. The results showed that the higher specific surface area of CB led to higher surface roughness, interfacial thickness, and Young's modulus at the nanoscale. The reinforcing mechanism of CB with slightly smaller diameter on the rubber matrix was explained.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Yuji Yamagishi, Hiroaki Kominami, Kei Kobayashi, Yuki Nomura, Emiko Igaki, Hirofumi Yamada
Summary: In this study, the molecular-scale solvation structures at the electrolyte-mica interface were measured using FM-AFM. The effective size of molecular assemblies formed at the interface increased with increasing ion concentrations, as shown by both experimental results and molecular dynamics simulations.
Article
Nanoscience & Nanotechnology
Keivan Asadi, Junghoon Yeom, Hanna Cho
Summary: Investigating internal resonance (IR) mechanisms in micro/nanoresonators reveals that intermodal coupling between second and third flexural modes in asymmetric structures provides an optimal condition for strong IR, with high energy transfer to the resonated mode. This study introduces design strategies that can be easily integrated into typical micro/nanoelectromechanical systems, offering potential for paradigm-shifting applications in micro/nanosystems.
MICROSYSTEMS & NANOENGINEERING
(2021)
Article
Physics, Multidisciplinary
M. Omidian, S. Leitherer, N. Neel, M. Brandbyge, J. Kroeger
Summary: Through experiments and calculations, we found that under an external electric field, the polar covalent bond between a gold atom and a carbon atom on graphene exhibits different strengths and stabilities depending on the orientation of the field.
PHYSICAL REVIEW LETTERS
(2021)
Editorial Material
Multidisciplinary Sciences
Telmo O. Paiva, Albertus Viljoen, Yves F. Dufrene
Summary: Advancements in atomic force microscopy (AFM) techniques and methodologies in microbiology have enhanced our understanding of microbial cell surfaces. Recent studies have shown that AFM imaging of cells and membranes at or near molecular resolution enables detailed visualization of membrane-drug interactions.
NATURE COMMUNICATIONS
(2022)
Article
Biochemistry & Molecular Biology
Constanca Junior, Maria Narciso, Esther Marhuenda, Isaac Almendros, Ramon Farre, Daniel Navajas, Jorge Otero, Nuria Gavara
Summary: The study characterized the macro- and micromechanical properties of lung ECM in pulmonary fibrosis using an in vivo model. It found that fibrotic ECM exhibited strain-hardening at the macroscale and strain-softening at the microscale under stretch conditions. The results suggest a potential mechanotransduction mechanism in fibrotic ECM that could slow down the progression of PF by steering resident fibroblasts away from a pro-fibrotic profile.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Chemistry, Applied
Jack Yang, Sarah P. Lamochi Roozalipour, Claire C. Berton-Carabin, Constantinos V. Nikiforidis, Erik van der Linden, Leonard M. C. Sagis
Summary: The presence of phenolic compounds in rapeseed extracts can significantly influence the interfacial and foaming properties of whey protein, leading to protein aggregation and reduced foam stability. Removing unbound phenols only partially restores the properties, suggesting a strong binding between phenols and proteins.
FOOD HYDROCOLLOIDS
(2021)
