Editorial Material
Engineering, Mechanical
Patricia M. Johns-Rahnejat, Ramin Rahmani, Homer Rahnejat
Summary: The paper provides a commentary on the current state and future trends in tribological research, highlighting the interdisciplinary nature of the subject and its interactions with various other disciplines. It discusses the kinematics of contacts at different physical scales and explores a wide range of applications. The paper also presents the current state-of-the-art tribological research within a multi-physics, multi-scale framework.
Review
Biochemistry & Molecular Biology
Bellinda Benhamu, Mar Martin-Fontecha, Henar Vazquez-Villa, Maria L. Lopez-Rodriguez, Silvia Ortega-Gutierrez
Summary: Aging, considered a major risk factor for chronic diseases, is being questioned by recent research that suggests removing senescent cells can ameliorate aging phenotype and associated diseases. This opens the door to tailored therapeutic interventions for extending healthspan and treating aging as a chronic disease.
Article
Engineering, Mechanical
Zuzanna Bojarska, Janusz Kopytowski, Marta Mazurkiewicz-Pawlicka, Piotr Bazarnik, Stanislaw Gierlotka, Antoni Rozen, Lukasz Makowski
Summary: The study found that adding MoS2-based nanomaterials can significantly improve the rheological and tribological properties of engine oil, especially at temperatures above 0 degrees Celsius. This method provides a new approach to enhance the durability and efficiency of internal combustion engines.
TRIBOLOGY INTERNATIONAL
(2021)
Review
Chemistry, Physical
Isha Srivastava, Ankit Kotia, Subrata Kumar Ghosh, Mohamed Kamal Ahmed Ali
Summary: Improving lubricant quality is crucial to enhance the efficiency of machinery components. The study of nanotribology focuses on friction behavior at micro and nanoscale. Molecular Dynamic simulation has become a popular approach for analyzing tribological properties at molecular level and nanoscale.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Chemistry, Physical
Zhiling Luo, Wang Gao
Summary: The lattice mismatch and size effect of carbon nanotubes (CNTs) have significant impacts on nanofriction. Molecular dynamics simulations reveal that longer CNTs transition from rolling to sliding on graphene, and the lattice mismatch reduces the length of rolling-sliding transition. However, this transition is absent on hexagonal boron nitride (hBN) due to its distinct properties. Sliding friction force depends on lattice mismatch, while rolling friction force depends on both lattice mismatch and CNT length.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Rong-Guang Xu, Gunan Zhang, Yuan Xiang, Yongsheng Leng
Summary: The friction behaviors of an amorphous SiO2 tip sliding on the Au(111) surface in atomic force microscopy (AFM) were investigated using molecular dynamics (MD) simulations. It was observed that there is an extremely low, close-to-zero friction regime with clear stick-slip friction signals at low normal loads. Friction is almost independent of the applied normal load below a certain threshold, but it can either remain low or increase sharply above this threshold. This unexpected friction duality is attributed to the formation of defects at the sliding interface.
Review
Computer Science, Information Systems
Mehdi Azaouzi, Wassim Mnasri, Lotfi Ben Romdhane
Summary: The growing popularity of social networks presents an opportunity for practical applications, but challenges such as privacy concerns exist. Research methods include diffusion models and influence maximization techniques.
COMPUTER SCIENCE REVIEW
(2021)
Review
Chemistry, Multidisciplinary
Beatrice Bartolomei, Jacopo Dosso, Maurizio Prato
Summary: Carbon dots are currently a hot topic in nanomaterial research, but their preparation methods have faced challenges such as high temperatures, long reaction times, and toxic solvents. Innovative chemistry fields like mechanochemistry, flow chemistry, and laser synthesis could offer potential solutions to these issues. Additionally, machine learning could be utilized to expand the properties and applications of carbon dots.
TRENDS IN CHEMISTRY
(2021)
Review
Pharmacology & Pharmacy
Xiaoyan Cai, Shiwen Yuan, Yanting Zeng, Cuicui Wang, Na Yu, Changhai Ding
Summary: Osteoarthritis is a major cause of function loss and disability in elderly individuals, with its treatment facing challenges due to multifactorial etiologies. However, emerging therapies show promise in providing benefits for OA management. By targeting specific mechanisms of OA, the landscape of OA treatment is expected to be reshaped in the coming years.
FRONTIERS IN PHARMACOLOGY
(2021)
Article
Physics, Multidisciplinary
Xin Cao, Andrea Silva, Emanuele Panizon, Andrea Vanossi, Nicola Manini, Erio Tosatti, Clemens Bechinger
Summary: Compared to translational friction, rotational friction has received less attention. In this study, we experimentally and theoretically investigate the rotational depinning and orientational dynamics of two-dimensional colloidal crystalline clusters on periodically corrugated surfaces under the influence of magnetically exerted torques. Our results show that the traversal of locally commensurate areas of the moiré pattern through the edges of clusters, hindered by potential barriers during cluster rotation, controls its rotational depinning. The experimentally measured depinning thresholds collapse onto a universal theoretical curve, suggesting the possibility of a superlow-statictorque state for large clusters. We also find a cluster-size-independent rotation-translation depinning transition when lattice-matched clusters are driven jointly by a torque and a force.
Article
Food Science & Technology
Serena Martini, Lisa Solieri, Davide Tagliazucchi
Summary: In recent years, the field of food peptidomics has gained increasing relevance in food science, defined as the pool of peptides existing in food products or generated during food processing, storage or digestion. Advances in high-resolution mass spectrometry techniques have provided a more detailed picture, although not yet exhaustive, of food-derived peptides. Efforts to improve the identification of short peptides and the analysis of large data sets are still necessary to further develop food peptidomics techniques.
CURRENT OPINION IN FOOD SCIENCE
(2021)
Article
Engineering, Mechanical
Owen Brazil, George M. Pharr
Summary: Partial interface slip prior to sliding is observed in micrometre-scale single asperity contacts formed by diamond tips and various substrate materials. The behavior is independent of contact radius, tip geometry, and elastic/plastic state of the substrate, and is consistent in amorphous silica and single crystal quartz contacts. Friction anisotropy in sapphire is also demonstrated.
TRIBOLOGY INTERNATIONAL
(2021)
Article
Nanoscience & Nanotechnology
Sourav Sahoo, Zuhaa Khan, Sajid Mannan, Utkarsh Tiwari, Zhijiang Ye, N. M. Anoop Krishnan, Nitya Nand Gosvami
Summary: This study demonstrates that silica glasses protected with mechanically exfoliated few-layer graphene sheets exhibit remarkable improvement in scratch resistance. The results show a significant reduction in friction and wear on the graphene-glass surfaces, resulting in lower damage after scratching.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Review
Biotechnology & Applied Microbiology
Anna Dawiec-Lisniewska, Daria Podstawczyk, Anna Bastrzyk, Krystian Czuba, Kornelia Pacyna-Iwanicka, Oseweuba Valentine Okoro, Amin Shavandi
Summary: This review discusses the recent applications of photosynthetic microorganisms in the fields of biomedical, urban, environmental, and electrical engineering, and emphasizes their important role in combating global warming and food and energy insecurity. It also introduces and discusses their applications in microrobotics, drug delivery and wound healing systems, biosensors, and bioelectronics, and explores the impact of emerging fabrication techniques on their development.
BIOTECHNOLOGY ADVANCES
(2022)
Review
Materials Science, Multidisciplinary
Z. Li, F. Mangolini
Summary: Despite significant progress in the field of IL-mediated lubrication, there are still many open questions regarding the effects of temperature, impurities, and surface roughness on the friction response and dynamic behaviors of nanoconfined ILs. Mechanistic understanding of the tribochemical reactivity of ILs is also lacking. Further research is needed to establish links between the IL structure, lubrication mechanism(s), and performance for the development of ILs with enhanced tribological properties.
EXPERIMENTAL MECHANICS
(2021)
Article
Chemistry, Physical
Melisa M. Gianetti, Roberto Guerra, Andrea Vanossi, Michael Urbakh, Nicola Manini
Summary: We introduce a model for zwitterionic monolayers and study their tribological response to changes in load, velocity, and temperature using molecular-dynamics simulations. The model shows different motion regimes depending on temperature and velocity. Friction increases remarkably with temperature due to the formation and rupture of transient bonds between sliding layers caused by thermal fluctuations of molecular orientations. Comparing with simulations of charge-free systems highlights the effect of molecular charges. These findings are important for nanoscale rheology and tribology experiments on locally-charged lubricated systems.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Biochemical Research Methods
Manjeet Bhatia, Nicola Manini, Franco Biasioli, Luca Cappellin
Summary: This study applies density-functional theory (DFT) to obtain molecular data for predicting the reaction kinetics of chemical-ionization-mass spectrometry (CI-MS) in the analysis of volatile organic compounds (VOCs). The collision rate coefficients of ion-molecule reactions are evaluated using collision-based models. Factors affecting collision reaction rates, including electric-dipole moment and polarizability, temperature, and electric field, are investigated. Molecular electric-dipole moment and polarizability are determined for neutral VOCs to calculate collision reaction rates. The thermodynamic feasibility of the reactions is also examined by computing the enthalpy change.
JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY
(2022)
Article
Nanoscience & Nanotechnology
Carl Drechsel, Philipp D'Astolfo, Jung-Ching Liu, Thilo Glatzel, Remy Pawlak, Ernst Meyer
Summary: Topological superconductivity in one-or two-dimensional hybrid materials is predicted as crucial for quantum computing. The design of complex heterostructures and characterization of their properties at atomic scale using advanced scanning probe microscopy with functionalized tips are important for future applications. This study reports on the topographic signatures observed by scanning tunneling microscopy of CO molecules, Fe atoms and NaCl islands on superconducting Pb(111).
BEILSTEIN JOURNAL OF NANOTECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Laurent Marot, Silvester Jakob, Marco Martina, Peter Reimann, Heinz Breitenstein, Michael Steinacher, Ernst Meyer
Summary: Planar flow casting is a rapid solidification process used for manufacturing thin metallic ribbons and foils. The study focuses on a periodic surface defect called herringbone, which is related to processing conditions and puddle dynamics. By utilizing the Reimann Brake Ramp, the uniformity of thickness in ribbons can be successfully controlled. Additionally, the correlation between Euler number, dimensionless thickness parameter, and nozzle inclination with ribbon thickness and quality is explored.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Microscopy
Thilo Glatzel, Urs Gysin, Ernst Meyer
Summary: Kelvin probe force microscopy is a method for imaging the surface potential using atomic force microscopy, providing detailed information about electrical properties and additional properties through the combination of optical and electrical excitation mechanisms. This article introduces the main concept and operation methods, and discusses the concepts of structural dopant profiling and surface photovoltage measurements through analysis of a Si superjunction device, exploring the influence on the measured contact potential values.
Article
Chemistry, Multidisciplinary
Ian Cheng-Yi Hou, Antoine Hinaut, Sebastian Scherb, Ernst Meyer, Akimitsu Narita, Klaus Muellen
Summary: This study reports the synthesis of two giant dendritic PPs using a layer-by-layer extension strategy, and the successful deposition of these PPs on metal substrates. Scanning probe microscopy imaging provides valuable information on the possible thermally induced partial planarization of these giant dendritic PPs on a metal surface.
CHEMISTRY-AN ASIAN JOURNAL
(2022)
Article
Physics, Multidisciplinary
Xin Cao, Andrea Silva, Emanuele Panizon, Andrea Vanossi, Nicola Manini, Erio Tosatti, Clemens Bechinger
Summary: Compared to translational friction, rotational friction has received less attention. In this study, we experimentally and theoretically investigate the rotational depinning and orientational dynamics of two-dimensional colloidal crystalline clusters on periodically corrugated surfaces under the influence of magnetically exerted torques. Our results show that the traversal of locally commensurate areas of the moiré pattern through the edges of clusters, hindered by potential barriers during cluster rotation, controls its rotational depinning. The experimentally measured depinning thresholds collapse onto a universal theoretical curve, suggesting the possibility of a superlow-statictorque state for large clusters. We also find a cluster-size-independent rotation-translation depinning transition when lattice-matched clusters are driven jointly by a torque and a force.
Article
Chemistry, Multidisciplinary
Yiming Song, Xiang Gao, Antoine Hinaut, Sebastian Scherb, Shuyu Huang, Thilo Glatzel, Oded Hod, Michael Urbakh, Ernst Meyer
Summary: Friction force microscopy experiments on moire superstructures of graphene-coated platinum surfaces reveal a new dominant energy dissipation route related to moire ridge elastic deformations. The frictional velocity dependence exhibits two distinct regimes, with a threshold velocity separating them that decreases with increasing normal load and moire superstructure period. A phenomenological model based on measurements and simulations accurately predicts friction under various room temperature experimental conditions.
Article
Chemistry, Multidisciplinary
Emanuele Panizon, Andrea Silva, Xin Cao, Jin Wang, Clemens Bechinger, Andrea Vanossi, Erio Tosatti, Nicola Manini
Summary: The understanding of nano-scale friction, governed by atomic arrangements, is incomplete. This study provides a unified understanding of friction by researching the potential energy of contacting surfaces and categorizing contacts into three types based on geometrical features. These types include structurally lubricated contacts, corrugated and interlocked contacts, and a newly discovered directionally structurally lubricated contact. The findings have implications for a wide range of materials in contact.
Article
Chemistry, Analytical
Francois Huber, Hans Peter Lang, Stefanie Heller, Julia Anna Bielicki, Christoph Gerber, Ernst Meyer, Adrian Egli
Summary: This study demonstrates the use of a rapid and sensitive nanomechanical sensor array for early detection of bacterial sepsis. By extracting total RNA from patient blood samples and utilizing 16S-rRNA hybridization and species-specific probes on the sensor array, the presence of clinically relevant bacterial species such as Escherichia coli and Staphylococcus aureus was successfully identified. This technology shows potential for revolutionizing sepsis diagnostics.
Article
Chemistry, Physical
Zeynep Ergoenenc Yavas, Duygu Cevher, Hasan Tore Silis, Ali Cirpan, Oguz Gulseren, Cesare Franchini
Summary: We conducted an experimental and first-principles study to investigate the changes in electrical conductivity properties of polyaniline Emeraldine Salt (ES) form synthesized using two different methods. The ES powders obtained through interfacial synthesis (PANI-I) exhibited higher electrical conductivity compared to the powders obtained through conventional synthesis (PANI-C). The study suggests that PANI-I differs from PANI-C in terms of its localized defect state, which significantly affects its intrinsic conductivity. Additionally, the study compared the bond lengths, dihedral angles, and relative stabilities of different states of the polymer and found that the ES Bipolaron state (ESB) and Polaron state (ESP) may coexist, and increasing the length of the polymer chain does not influence the relative stability between ESB and ESP defect states.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Zhao Liu, J. G. Vilhena, Ernst Meyer, Antoine Hinaut, Sebastian Scherb, Feng Luo, Junyan Zhang, Thilo Glatzel, Enrico Gnecco
Summary: Friction control and technological advancement are closely linked, and two-dimensional materials have unique characteristics for achieving quasi-frictionless contacts. Inspired by twistronics, we propose to use moire patterning to control superlubricity. Experimental and simulation results reveal a transition from superlubric to dissipative sliding regime in graphene moires on a Pt(111) surface at different twist angles, triggered by the normal force. This transition is caused by a novel mechanism at the superlattice level, where the moire tiles are manipulated in a highly dissipative shear process associated with the twist angle. The atomic-level details of this dissipation allow the bridging of different sliding regimes in a reversible manner, providing a subtle intrinsic control of superlubricity.
Article
Chemistry, Multidisciplinary
Yiming Song, Ernst Meyer
Summary: In this Perspective, the recent advances in atomic friction of two-dimensional materials measured by friction force microscopy are presented. The main factors contributing to sliding friction between single asperity and a two-dimensional sheet are discussed, including material chemical identity, thickness, external load, sliding direction, velocity/temperature, and contact size. The latest progress of the more complex friction behavior of moire systems involving 2D layered materials is particularly focused on. The underlying mechanisms of these observed frictional characteristics during the sliding process are discussed through theoretical and computational studies, and a discussion and outlook on the perspective of this field are provided.
Article
Chemistry, Physical
Melisa M. Gianetti, Roberto Guerra, Andrea Vanossi, Michael Urbakh, Nicola Manini
Summary: This article theoretically explores the effect of a transverse electric field on the frictional response of a bi-layer of packed zwitterionic molecules. The reorientation of dipole moments caused by the electric field can result in either stick-slip or smooth sliding dynamics, with average shear stress values varying widely. The study reveals a structure-property relationship by investigating the arrangement and mutual orientation of the molecules. Additionally, the electric field suppresses the thermal friction enhancement previously observed in these molecules, restoring the expected thermolubricity at sufficiently large fields. Other basic tribological quantities, such as external load, also exhibit opposite influences on friction depending on the strength of the applied electric field.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Simona Achilli, Francesco Tumino, Andi Rabia, Alessio Orbelli Biroli, Andrea Li Bassi, Alberto Bossi, Nicola Manini, Giovanni Onida, Guido Fratesi, Carlo Spartaco Casari
Summary: This research demonstrates that the formation of polymers hosting sp carbon chains using anthracene-based precursor molecules on Au(111) is affected by steric hindrance between aromatic groups. Through scanning tunneling microscopy experiments and density functional theory simulations, it is found that the de-metalation of organometallic structures leads to a lateral separation of adjacent polymers, preventing the formation of ordered domains.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
