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
Chemistry, Physical
Denis Scaini, Fabio Biscarini, Loredana Casalis, Cristiano Albonetti
Summary: Adjacent patches of alkanethiol molecules with chain lengths ranging from 11 to 15 carbon atoms were fabricated using nanografting within a Self-Assembled Monolayer matrix. The structural and electronic properties of these molecules were investigated using Atomic Force Microscopy and Electrostatic Force Microscopy, highlighting the significant influence of substrate roughness. The results revealed an odd-even dependence of local stiffness on alkyl chain length based on topographic phase signal, and an asymmetric parabolic trend of conformational order versus the alkyl chain length induced by substrate roughness based on electrostatic force signal.
CHEMICAL PHYSICS LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Daniel Martin-Jimenez, Michael G. Ruppert, Alexander Ihle, Sebastian Ahles, Hermann A. Wegner, Andre Schirmeisen, Daniel Ebeling
Summary: This study analyzes the suitability of qPlus sensors for modern multifrequency AFM techniques and demonstrates their ability to achieve submolecular resolution imaging. The results show that using torsional and flexural higher eigenmodes can produce good imaging results and reveal specific contrast features.
Article
Engineering, Electrical & Electronic
Ryota Fukuzawa, Daichi Kobayashi, Takuji Takahashi
Summary: Electrostatic force microscopy (EFM) is used to examine the electrostatic force between an AFM tip and sample surface, allowing evaluation of their capacitance and surface potential. The dependences of the electrostatic force on dc voltage and ac voltage frequency can be used to investigate carrier density, carrier type, and deep-level states in a semiconductor. Proper distance control is necessary in EFM to ensure accurate measurements, and the oscillation amplitude of a cantilever can be effectively used for feedback control. The 1 A-mode operation in EFM shows good robustness against the strong electrostatic force and allows proper measurements of tip-sample capacitance.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
Article
Biology
Takehiko Ichikawa, Dong Wang, Keisuke Miyazawa, Kazuki Miyata, Masanobu Oshima, Takeshi Fukuma
Summary: Chemical fixatives have been found to potentially affect the nanoscale structures of cell surfaces by inducing aggregation of membrane proteins. However, research in this area has been limited due to the lack of methods for observing cell surface structures at the nanoscale. In this study, a method using atomic force microscopy and a microporous silicon nitride membrane was developed to observe cell surfaces with high resolution. The results showed that commonly used fixatives increased the size of protrusions on the cell surface, indicating the aggregation of membrane proteins caused by the fixatives.
COMMUNICATIONS BIOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Priti Kharel, Blanka E. Janicek, Sang Hyun Bae, Amanda L. Loutris, Patrick T. Carmichael, Pinshane Y. Huang
Summary: Here, we demonstrate atomic-resolution scanning transmission electron microscopy (STEM) imaging of light elements in small organic molecules on graphene. Our approach involves low-dose, room-temperature, aberration-corrected STEM to create high-quality composite images, with sufficient resolution to distinguish individual carbon and nitrogen atoms.
Article
Chemistry, Physical
Bin Shi, Xuehui Gan, Chi Zhang, Haojie Lang, Kun Zou, Tianzhao Bu, Yitian Peng
Summary: The study investigates nanoscale triboelectrification and nanofriction on insulating SiO2 surface using AFM and scanning Kelvin probe microscopy. It finds that nanofriction increases with enhanced tribocharge density and decreases with reduced tribocharges due to charge diffusion. These findings provide insights into the role of nanoscale triboelectrification on nanofriction and could help control energy dissipation in sliding nanofriction.
Article
Chemistry, Multidisciplinary
Marti Checa, Ruben Millan-Solsona, Adrianna Glinkowska Mares, Silvia Pujals, Gabriel Gomila
Summary: Mapping the dielectric properties of cells with nanoscale spatial resolution is crucial for nanomedicine and nanotoxicity analysis, complementing structural and mechanical measurements. This study demonstrates the feasibility of obtaining dielectric constant maps of fixed cells in liquid environments, which helps preserve cell structure while accessing local dielectric properties under fully hydrated conditions. Further developments are needed to address the nanoscale dielectric imaging of living cells.
Article
Chemistry, Multidisciplinary
Saima A. Sumaiya, Jun Liu, Mehmet Z. Baykara
Summary: The atomic-scale structure and properties of material surfaces play a significant role in various chemical and mechanical phenomena. However, current methods for characterizing surfaces at the atomic level are limited by the need for strict environmental conditions. This study presents a new approach utilizing conductive atomic force microscopy (C-AFM) to achieve atomic-resolution surface imaging under ambient conditions. The results demonstrate the capability of this method to manipulate and observe surface structure and electronics in real time, with wide-ranging applicability.
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
Multidisciplinary Sciences
Gwangmook Kim, Eoh Jin Kim, Hyung Wan Do, Min-Kyun Cho, Sungsoon Kim, Shinill Kang, Dohun Kim, Jinwoo Cheon, Wooyoung Shim
Summary: The authors developed a binary-state scanning probe microscopy technique using cantilever-free elastomeric probes and hierarchical measurement architecture, which enables high-resolution and high-throughput topography imaging. They successfully obtained 100 images over a 1-mm(2) area in less than 10 minutes using a 100-tip array.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Analytical
Jun-Hao Wan, Chen Qian, Gang Wu, Xian-Wei Liu
Summary: Label-free imaging of nanoscale targets with intrinsic properties is crucial for unveiling the underlying mechanisms of chemistry, physics, and life science. Plasmonic imaging techniques provide real-time imaging and insights into nanoscale detection and nanocatalysis. In this study, a high-resolution plasmonic imaging method is presented, demonstrating its capability to image various nanomaterials and accurately track the interfacial dynamics of nanoparticles. With the simplicity and capacity for label-free and real-time imaging, this approach serves as a promising platform for characterizing nanomaterials at the single-particle level.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Yuyao Zhang, Xiaoying Zhu, Bokai Zhu, Chiheng Chu, Baoliang Chen
Summary: The hydrophobicity of nanomaterials plays a crucial role in various interfacial phenomena. However, it is challenging to study the high-resolution surface hydrophobicity at the nanoscale. In this study, a chemical force microscopy technique is used to profile in situ hydrophobicity images with nanoscale resolution, providing significant improvement compared to traditional methods. The method is applied to recognize the spatial fine structure hydrophobicity of different materials and reveals new findings regarding the hydrophobicity of graphene oxides (GO) and the influence of wrinkles/edges on hydrophobicity. Furthermore, the technique enables the observation of local oxidation variation during interfacial reactions.
Article
Chemistry, Multidisciplinary
Franziska Sabath, Christian Aleff, Annamaria Latus, Ralf Bechstein, Angelika Kuehnle
Summary: Silver iodide (AgI) particles have exceptional ice nucleation ability due to their structural similarity with the basal plane of ice I-h. The nature of the stabilization mechanism and the atomically resolved images of the AgI-water interface have not been previously determined. This study provides atomic-scale insights into the interfacial structure, revealing a bulk-truncated geometry regardless of termination, and contributes to understanding the excellent ice nucleation ability of AgI.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Yeseong Choi, Su-Mi Kim, Youhee Heo, Gyudo Lee, Ji Yoon Kang, Dae Sung Yoon
Summary: The study found that with increasing concentrations of Aβ(42) oligomers, the surface charge of exosomes increased, indicating that exosomes contain more Aβ(42) and may serve as transport vesicles for Aβ(42).
Article
Chemistry, Multidisciplinary
Jiri Dolezal, Sofia Canola, Prokop Hapala, Rodrigo Cezar de Campos Ferreira, Pablo Merino, Martin Svec
Summary: The study of exciton entanglement in coupled molecular assemblies and the type of exciton coupling has promising applications. Near-field spectroscopy allows for direct identification of individual exciton eigenmodes, including excited states that are inaccessible in far-field spectroscopy.
Article
Chemistry, Multidisciplinary
Kalyan Biswas, Maxence Urbani, Ana Sanchez-Grande, Diego Soler-Polo, Koen Lauwaet, Adam Matej, Pingo Mutombo, Libor Veis, Jiri Brabec, Katarzyna Pernal, Jose M. Gallego, Rodolfo Miranda, David Ecija, Pavel Jelinek, Tomas Torres, Jose I. Urgel
Summary: Introduces a combined strategy for the synthesis of one-dimensional porphyrinoid-based polymers with open-shell character via surface-catalyzed reaction, which has prospects in the synthesis of innovative functional nanomaterials for carbon-based spintronics.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Correction
Chemistry, Multidisciplinary
Niko Oinonen, Chen Xu, Benjamin Alldritt, Prokop Hapala, Filippo Fderici Canova, Fedor Urtev, Shuning Cai, Ondrej Krejci, Juho Kannala, Peter Liljeroth, Adam S. Foster
Article
Chemistry, Multidisciplinary
Jesus Mendieta-Moreno, Benjamin Mallada, Bruno de la Torre, Timothee Cadart, Martin Kotora, Pavel Jelinek
Summary: In this work, the synthesis of a novel PAH molecule with an unusual C-C bond cleavage and complex molecular scaffold rearrangement is reported. It is found that the complex chemical transformation is steered by the concerted motion of individual Au-0 gold atoms on a supporting Au(111) surface. This observation highlights the importance of single-atom catalysis and catalytic activity of single Au-0 atoms in facilitating covalent carbon bond cleavage in on-surface synthesis.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Multidisciplinary Sciences
Jiri Dolezal, Sofia Canola, Prokop Hapala, Rodrigo Cezar de Campos Ferreira, Pablo Merino, Martin Svec
Summary: The authors observed the coupling between librational states and charged excited states in a phthalocyanine molecule absorbed on a surface. They provided a detailed analysis of the coupling and successfully simulated the spectral features. This research showcases the potential of using low-energy molecular modes to characterize molecular dynamics.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Benjamin Lowe, Jack Hellerstedt, Adam Matej, Pingo Mutombo, Dhaneesh Kumar, Martin Ondracek, Pavel Jelinek, Agustin Schiffrin
Summary: This study investigates the interaction between 9,10-dicyanoanthracene molecules and gold adatoms on a silver surface, and reveals a mechanism for selective cleavage of C-H bonds and formation of organometallic compounds at room temperature. By harnessing the catalytic activity of single metal atoms, this research provides promising routes for future synthesis of functional organic and organometallic materials.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Kalyan Biswas, Diego Soler, Shantanu Mishra, Qiang Chen, Xuelin Yao, Ana Sanchez-Grande, Kristjan Eimre, Pingo Mutombo, Cristina Martin-Fuentes, Koen Lauwaet, Jose M. Gallego, Pascal Ruffieux, Carlo A. Pignedoli, Klaus Mullen, Rodolfo Miranda, Jose I. Urgel, Akimitsu Narita, Roman Fasel, Pavel Jelinek, David Ecij
Summary: This study explores three families of nanographenes (A, B, and C) and finds that open-shell nanographenes exhibit the strongest magnetic exchange coupling, especially near the transition from closed-shell to open-shell states. Experimental results confirm the predictions, and two specific nanographenes show record values of magnetic exchange coupling measured on the Au(111) surface, close to 200 meV. This research provides insights for designing carbon nanomaterials with robust magnetic ground states.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Eduardo Corral Rascon, Alexander Riss, Adam Matej, Alissa Wiengarten, Pingo Mutombo, Diego Soler, Pavel Jelinek, Willi Auwaerter
Summary: The study presents a surface chemistry route for synthesizing square-type porphyrin tetramers with a central COT ring, coexisting with other oligomers. It demonstrates the access to surface-supported, unsubstituted porphyrin tetramers that are not easily achievable by conventional synthesis means. The molecular structures and electronic structure, including the antiaromaticity induced by the COT moiety, are elucidated through atomic-level characterization and density functional theory modeling.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Federico Frezza, Frederik Schiller, Ales Cahlik, Jose Enrique Ortega, Johannes V. Barth, Andres Arnau, Maria Blanco-Rey, Pavel Jelinek, Martina Corso, Ignacio Piquero-Zulaica
Summary: In this study, quinoidal ligands were reacted with single cobalt atoms on an Au(788) surface in ultra-high vacuum, resulting in the formation of cobalt-quinoid chains. The electronic structure of these chains was investigated using angle-resolved photoemission spectroscopy, and their narrow bandgap structure was revealed using low-temperature scanning tunneling microscopy/spectroscopy. Theoretical calculations confirmed that the observed electronic bands originated from the efficient hybridization of cobalt and molecular orbitals. This work provides a foundation for the systematic search of similar one-dimensional π-d hybridized metal-organic chains with tunable electronic and magnetic properties.
News Item
Chemistry, Multidisciplinary
P. Jelinek
Summary: An organic quantum magnet has been created by synthesizing short chains of porphyrin derivatives on a surface and manipulating atoms using a scanning probe microscope tip.
Article
Chemistry, Multidisciplinary
Tao Wang, Paula Angulo-Portugal, Alejandro Berdonces-Layunta, Andrej Jancarik, Andre Gourdon, Jan Holec, Manish Kumar, Diego Soler, Pavel Jelinek, David Casanova, Martina Corso, Dimas G. de Oteyza, Jan Patrick Calupitan
Summary: The coupling of a sterically demanded pentacene derivative on Au(111) into fused dimers connected by non-benzenoid rings was studied using high-resolution scanning tunneling microscopy/spectroscopy and density functional theory. The diradical character of the products was tuned by modifying the coupling section, with the antiaromaticity of cyclobutadiene and its position within the structure playing a significant role. Understanding these structure-property relationships is crucial for designing new complex and functional molecular structures.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Review
Psychology, Biological
Francesca Di Cicco, Richard L. Evans, A. Gordon James, Iain Weddell, Anita Chopra, Monique A. M. Smeets
Summary: This article discusses the biological mechanisms underlying the production of body odor from different areas of the body and the factors that impact odor and individual differences. Intrinsic factors such as sex, age, ethnicity, emotions, and personality, as well as extrinsic factors like dietary choices, diseases, climate, and hygienic habits, are examined. The article also highlights gaps in understanding and outlines future research opportunities. Finally, guidelines and best practices for sweat collection, data analysis, and interpretation are suggested based on the factors reviewed.
PHYSIOLOGY & BEHAVIOR
(2023)
Review
Nanoscience & Nanotechnology
Saoirse E. Freeney, Marlou R. Slot, Thomas S. Gardenier, Ingmar Swart, Daniel Vanmaekelbergh
Summary: This article discusses the method and application of constructing artificial lattices on atomically flat metals. Artificial lattices can be better controlled and fine-tuned, providing unique insights into complex electronic materials.
ACS NANOSCIENCE AU
(2022)
Article
Materials Science, Multidisciplinary
Mark J. J. Mangnus, Felix R. Fischer, Michael F. Crommie, Ingmar Swart, Peter H. Jacobse
Summary: In this paper, the relationship between the geometry of graphene nanoribbons (GNRs) and their charge transport characteristics is explored through in situ through-transport measurements and the development of a comprehensive transport model. The combined experimental and theoretical efforts help elucidate general charge transport phenomena in GNRs and GNR heterostructures.
Article
Materials Science, Multidisciplinary
M. A. J. Herrera, S. N. Kempkes, M. Blanco de Paz, A. Garcia-Etxarri, I Swart, C. Morais Smith, D. Bercioux
Summary: In this study, we investigate the non-trivial phase of a two-dimensional breathing kagome lattice, and find that the corner modes are not of higher-order topology. We also analyze the protection mechanism of the corner modes and identify the conditions under which they are pinned to zero energy. Additionally, using topological and symmetry markers, we identify the two breathing phases as adiabatically disconnected different obstructed atomic limits.
