Article
Chemistry, Physical
Miles F. Beaux, Reuben J. Peterson, Igor O. Usov
Summary: Atomic force microscopy was used to map the topography and qualitative mechanical characteristics of gallium-stabilized delta-phase plutonium coupons. The initial rough and heterogeneous surface of plutonium was observed, along with distinct striation patterns in qualitative nanomechanical mapping. Investigation suggested that the striations were not measurement artifacts or plutonium-specific features, and were influenced by mechanical working of the surface.
SURFACES AND INTERFACES
(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
Jianping Lai, Jinhui Liu, Hailong Hu, Jiaxin Yu, An Zhang, Weifeng Yuan, Zhiming Gao
Summary: The contribution of hardness and work hardening to the wear resistance of Pt-based metallic surfaces under reciprocating sliding contact were investigated using atomic force microscopy. It was found that Pt(1 1 1) exhibited a larger adhesion than Pt-BMG at low loads, while Pt-BMG showed higher hardness and was expected to have higher wear resistance at high loads. However, Pt(1 1 1) actually performed better, possibly due to the work hardening mechanism associated with dislocated-mediated deformation.
APPLIED SURFACE SCIENCE
(2023)
Article
Engineering, Mechanical
Xiuhua Qiu, Linghong Lu, Zhenyu Qu, Jiongtao Liao, Qi Fan, Faiz Ullah Shah, Wenling Zhang, Rong An
Summary: The study found that higher IL concentration in the IL-oil mixtures led to the formation of ordered IL-rich layers on the titanium surface, which facilitated the reduction of nanoscale friction. In contrast, lower concentration mixtures could not form complete boundary layers, resulting in less efficient friction reduction.
Article
Chemistry, Analytical
Xinyu Li, Li Zhao, Rongrong Feng, Xiaowei Du, Zelin Guo, Yu Meng, Yulan Zou, Wenchao Liao, Qiyuan Liu, Yaohuan Sheng, Gaowei Zhao, Haijian Zhong, Weidong Zhao
Summary: Using atomic force microscopy, it was found that Na(V)1.5 is irregularly distributed on the surfaces of both normal and cancer breast cells, with higher expression on cancer cells. The stability of the Na(V)1.5-antibody complex is higher on normal breast cells compared to cancer breast cells. These findings provide insights into the interactions of ion channel-antibody systems and the role of sodium channels in tumor metastasis and invasion.
ANALYTICAL METHODS
(2023)
Article
Engineering, Mechanical
Alexandre Cestari, Murilo de Araujo, Diego Carlos de Oliveira
Summary: Biodiesel, produced from renewable sources, is considered as an alternative fuel to replace fossil fuels. However, it has issues such as high affinity with water, low oxidative stability, and increased corrosiveness due to free fatty acids. Experimental tests showed that biodiesel can corrode metallic surfaces, particularly with higher water concentration and acidity levels.
ENGINEERING FAILURE ANALYSIS
(2021)
Article
Chemistry, Multidisciplinary
Jessica R. Wagner, Jared Fletcher, Stephen A. Morin
Summary: This paper describes a general approach to enhance the adhesion of metal films to commonly used plastic substrates using a metal-chelating polymer, polyethyleneimine, in combination with patterned electroless deposition. This general fabrication method is compatible with a wide range of plastics and metals, making it suitable for flexible electronic circuits and electrochemical cells.
CHEMICAL COMMUNICATIONS
(2022)
Article
Cell Biology
Arata Nagasaka, Takaki Miyata
Summary: The study found that the apical surfaces of different regions of the embryonic brain wall in mice have distinct mechanical properties, with the pallium region having higher stiffness than the ganglionic eminence, possibly due to differential densification of NPC apices. The greater pre-stress in the ganglionic eminence may indicate how the initially apically concave wall transforms into an apically convex eminence.
FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Akitoshi Shiotari, Septia Eka Marsha Putra, Yuichiro Shiozawa, Yuji Hamamoto, Kouji Inagaki, Yoshitada Morikawa, Yoshiaki Sugimoto, Jun Yoshinobu, Ikutaro Hamada
Summary: This study reveals the temperature-dependent adsorption structures of HCOOH on Cu(111) surface through experimental and theoretical simulations. Different adsorption states were observed at different temperatures, and the interactions between adsorbates play a crucial role in stability and catalytic activity.
Article
Nanoscience & Nanotechnology
Takahiko Ikarashi, Kyosuke Nakayama, Naoki Nakajima, Kazuki Miyata, Keisuke Miyazawa, Takeshi Fukuma
Summary: In this study, the three-dimensional adsorption structures of anti-freezing surfactants on sapphire surfaces were directly visualized using 3D scanning force microscopy. The observed adsorption configurations at different concentrations provide important insights into the anti-freezing mechanism.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Irem Demir, Ines Luechtefeld, Claude Lemen, Etienne Dague, Pascal Guiraud, Tomaso Zambelli, Cecile Formosa-Dague
Summary: Studying the interactions between bubbles and bio-surfaces is a challenge, but a new method can be used to understand and engineer bubble-(bio)surfaces interactions.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Nanoscience & Nanotechnology
Sukriti Hans, Basanta Kumar Parida, Vivek Pachchigar, Sebin Augustine, K. P. Sooraj, Mukesh Ranjan
Summary: Ion beam sputtering is a potential technique for producing nanoripples on various surfaces. However, triangular features are also formed, limiting their use for certain applications. This study investigates the formation of triangular features on Ge (100) surfaces under low energy Xe ion irradiation. The results show that the formation of triangular features depends on the material and the ion/target mass ratio. Numerical simulations based on the Kuramoto-Sivanshinsky equation were found to agree well with experimental observations.
Article
Materials Science, Multidisciplinary
Norio Okabayashi, Thomas Frederiksen, Alexander Liebig, Franz J. Giessibl
Summary: Friction, a complex phenomenon, is studied by simplifying the system through molecular manipulation. In this paper, the authors use noncontact atomic force microscopy, inelastic electron tunneling spectroscopy, and density functional theory calculations to investigate the molecular manipulation process of a single CO molecule on Cu(110) and Cu(111) surfaces. They discover the presence of an important adsorption site that plays a role in the manipulation process and contributes to understanding the dynamics of manipulation and dynamic friction.
Article
Chemistry, Multidisciplinary
Damla Yesilpinar, Bertram Schulze Lammers, Alexander Timmer, Zhixin Hu, Wei Ji, Saeed Amirjalayer, Harald Fuchs, Harry Moenig
Summary: Dedicated methods in atomic force microscopy provide fundamental insights into atomic interactions by measuring threshold forces needed to move single adsorbed atoms or molecules. However, the chemical and structural properties of the probe-tip can significantly influence the results, emphasizing the importance of establishing atomically defined contacts.
Article
Chemistry, Physical
Jana Hennig, Valentin Feller, Pedro J. Martinez, Juan J. Mazo, Enrico Gnecco
Summary: This study investigates the influence of geometric shape on the orientation of nanoripples formed on a polystyrene surface. The results show that the geometric confinement significantly modifies the tendency of the ripples to align. The analysis of different shapes also reveals the importance of straight edges and sharp corners in the nanostructuring process.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
David Z. Gao, Filippo Federici Canova, Matthew B. Watkins, Alexander L. Shluger
JOURNAL OF COMPUTATIONAL CHEMISTRY
(2015)
Article
Engineering, Electrical & Electronic
Al-Moatasem El-Sayed, Matthew B. Watkins, Tibor Grasser, Valeri V. Afanas'ev, Alexander L. Shluger
MICROELECTRONIC ENGINEERING
(2015)
Article
Chemistry, Physical
Julian Gaberle, David Z. Gao, Matthew B. Watkins, Alexander L. Shluger
JOURNAL OF PHYSICAL CHEMISTRY C
(2016)
Article
Chemistry, Multidisciplinary
Keisuke Miyazawa, Naritaka Kobayashi, Matthew Watkins, Alexander L. Shluger, Ken-ichi Amano, Takeshi Fukuma
Article
Physics, Multidisciplinary
C. M. Yim, M. B. Watkins, M. J. Wolf, C. L. Pang, K. Hermansson, G. Thornton
PHYSICAL REVIEW LETTERS
(2016)
Article
Nanoscience & Nanotechnology
K. Miyazawa, M. Watkins, A. L. Shluger, T. Fukuma
Article
Chemistry, Physical
T. R. Durrant, S. T. Murphy, M. B. Watkins, A. L. Shluger
JOURNAL OF CHEMICAL PHYSICS
(2018)
Article
Chemistry, Physical
A. R. Elmaslmane, M. B. Watkins, K. P. McKenna
JOURNAL OF CHEMICAL THEORY AND COMPUTATION
(2018)
Article
Chemistry, Multidisciplinary
Franck Para, Franck Bocquet, Laurent Nony, Christian Loppacher, Michel Feron, Frederic Cherioux, David Z. Gao, Filippo Federici Canova, Matthew B. Watkins
Article
Chemistry, Physical
Jack Strand, Sergey K. Chulkov, Matthew B. Watkins, Alexander L. Shluger
JOURNAL OF CHEMICAL PHYSICS
(2019)
Article
Chemistry, Multidisciplinary
Emiliano Poli, Joshua D. Elliott, Sergey K. Chulkov, Matthew B. Watkins, Gilberto Teobaldi
FRONTIERS IN CHEMISTRY
(2019)
Correction
Chemistry, Physical
Sanliang Ling, Matthew B. Watkins, Alexander L. Shluger
JOURNAL OF PHYSICAL CHEMISTRY C
(2020)
Article
Chemistry, Physical
Anna-Sophia Hehn, Beliz Sertcan, Fabian Belleflamme, Sergey K. Chulkov, Matthew B. Watkins, Juerg Hutter
Summary: Time-dependent density functional theory has become the state-of-the-art method for describing photophysical and photochemical processes in extended materials due to its affordability. However, the treatment of exact exchange is not efficient, leading to the proposal of two approximate schemes for improving computational efficiency.
JOURNAL OF CHEMICAL THEORY AND COMPUTATION
(2022)
Article
Crystallography
Christopher Dickens, Adam O. J. Kinsella, Matt Watkins, Matthew Booth
Summary: This study investigates Fe substitution in CuAlS2 using density functional theory and reveals defect complexes associated with the optical resonance in CuFeS2. This is important for understanding the properties of CuFeS2 and controlling the optical properties of similar systems.
Article
Materials Science, Multidisciplinary
Al-Moatasem El-Sayed, Matthew B. Watkins, Tibor Grasser, Alexander L. Shluger