Article
Anatomy & Morphology
Mohammad Bakhtiari, Mohammadreza Hantehzadeh, Elham Darabi
Summary: In this study, platinum nanoparticles were synthesized using laser ablation technique with Nd:YAG, and the impact of applied electric field on their properties was investigated. Results showed that increasing electric field led to the formation of NPs with various shapes and decreased average size, as well as affecting the color peak. Additionally, analysis of atomic force microscopy images revealed that increasing electric field resulted in a more irregular surface morphology.
MICROSCOPY RESEARCH AND TECHNIQUE
(2021)
Article
Materials Science, Multidisciplinary
J. Hargreaves, S. Moore, G. Yuan, D. Liu, H. Tipping, R. Abbott, J. Tufnail, H. Dawson, T. L. Martin
Summary: In this study, the microstructure of novel laser-keyhole Eurofer 97 welds was modeled using finite element thermal analysis and precipitate kinetics modeling. Microanalysis techniques such as scanning electron microscopy and high-speed atomic force microscopy were performed on representative specimens, revealing the presence of large void defects in the weld fusion zone.
MATERIALS & DESIGN
(2023)
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)
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
Physics, Applied
Shiquan Lin, Zhong Lin Wang
Summary: Inspired by TENG, scanning TENG is proposed for local surface charge density measurement using atomic force microscopy. The technique taps a conductive tip above a charged dielectric surface to induce an AC, with Fourier analysis showing a linear relation to surface charge density. Results demonstrate its power in probing nanoscale charge transfer in contact-electrification.
APPLIED PHYSICS LETTERS
(2021)
Article
Nanoscience & Nanotechnology
S. Katsiaounis, N. Chourdakis, E. Michail, M. Fakis, I Polyzos, J. Parthenios, K. Papagelis
Summary: In this work, we introduce an experimental protocol to engineer nanometer scale pores in CVD graphene membranes under ambient conditions, using low power ultra-short laser pulses and overcoming the drawbacks of other perforation techniques. We visualized and quantified the nanopore network using Atomic Force Microscopy (AFM) and Scanning Electron Microscopy (SEM), while Raman spectroscopy is utilized to correlate the nano-perforated area with the nanotopographic imaging. Our results suggest that Raman imaging provides the identification of nanoporous area and, in combination with AFM, we provide solid evidence for the reproducibility of the method, as nanopores of a certain size distribution are formed under these experimental conditions.
Article
Materials Science, Multidisciplinary
Jing Cao, Xiaoyu Xiong, Yuanfeng Liu, Jingbo Sun, Ji Zhou
Summary: Laser interference patterning of copper-based organic-inorganic hybrid perovskite thin film with micro/nanoscale surface structures was successfully demonstrated using 532 nm laser two-beam interference. The extinction coefficient and index of refraction of the fabricated thin film were characterized, and the morphology of the laser-induced structure was investigated using optical microscopy, scanning electron microscopy, and atomic force microscopy. The interaction mechanism between the laser and the copper-based perovskite thin film was also discussed. This research expands the materials selection in laser fabrication and provides a pathway for optimizing micro/nano features for diffractive optics applications.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
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
Chemistry, Physical
Francisco J. Solis, Monica Olvera de la Cruz
Summary: This article discusses the interactions between charged particles and induced polarization charge on solid-liquid or liquid-liquid interfaces with dielectric contrast, as well as the self-energy of charged particles near rough surfaces. Results show that the local convexity and concavity of the surface affect the repulsion of ions.
JOURNAL OF CHEMICAL PHYSICS
(2021)
Article
Cell Biology
Elma Sakinatus Sajidah, Keesiang Lim, Tomoyoshi Yamano, Goro Nishide, Yujia Qiu, Takeshi Yoshida, Hanbo Wang, Akiko Kobayashi, Masaharu Hazawa, Firli R. P. Dewi, Rikinari Hanayama, Toshio Ando, Richard W. Wong
Summary: Small extracellular vesicles (sEVs) play a crucial role in cell communication and can be used for drug delivery and structural characterization of nanoparticles. The high-speed atomic force microscopy (HS-AFM) can evaluate the structural changes of sEVs under different physicochemical stresses.
JOURNAL OF EXTRACELLULAR VESICLES
(2022)
Article
Mechanics
Abbasali Abouei Mehrizi, Qiao Liu, Hao Wang
Summary: The extended thin-film region adjacent to the contact line plays a crucial role in heat transfer and wetting dynamics by enhancing heat transfer and influencing contact line morphology. The study focused on advancing contact line morphology induced by water vapor condensation at low rates. Results showed that the morphology of the liquid film in this process differs from nonvolatile cases, with a precursor nanofilm and nanodroplets detected beyond the contact line.
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
Energy & Fuels
Paul C. Hackley, Jolanta Kus, Joao Graciano Mendonca Filho, Andrew D. Czaja, Angeles G. Borrego, Dragana Zivotic, Brett J. Valentine, Javin J. Hatcherian
Summary: This study investigates bituminite in Upper Jurassic Kimmeridge Clay source rock using CLSM and AFM, providing better understanding of its nature and properties. The findings include the composition and fluorescence spectroscopy characteristics of bituminite, as well as the effects of broad ion beam milling on its surface morphology.
INTERNATIONAL JOURNAL OF COAL GEOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Niklas A. Weber, Hendrik Schmidt, Tim Sievert, Christian Jooss, Friedrich Guethoff, Vasily Moshneaga, Konrad Samwer, Matthias Krueger, Cynthia A. Volkert
Summary: This study investigates the mechanism of friction at sliding contacts, proposing that friction can be explained by considering the damping of stick-slip pulses. The findings provide a basis for reconciling controversies in literature studies on friction and suggest possible tactics for controlling friction.
Review
Cell Biology
Yuan Qiu, Chen-Chi Chien, Basile Maroulis, Jiani Bei, Angelo Gaitas, Bin Gong
Summary: This article presents a review of the applications of atomic force microscopy (AFM) and fluidic atomic force microscopy (fluidFM) in single-cell studies. It discusses the use of AFM in studying single cells, extracellular vesicles, colloidal force spectroscopy, and single-cell adhesion measurements. FluidFM, a combination of microfluidics and AFM, allows for biological, pathological, and pharmacological studies on single cells in a liquid environment. The review focuses on the capabilities of fluidFM in measuring adhesion, binding forces, and manipulating single cells, as well as its applications in patch clamping and mass measurements.
JOURNAL OF CELLULAR PHYSIOLOGY
(2022)
Article
Environmental Sciences
Benjamin Dubansky, Guido Verbeck, Phillip Mach, Warren Burggren
ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY
(2018)
Article
Medicine, Legal
Ethan M. McBride, Guido F. Verbeck
FORENSIC SCIENCE INTERNATIONAL
(2018)
Article
Physics, Atomic, Molecular & Chemical
Ethan M. McBride, Reagann E. Keller, Guido F. Verbeck
INTERNATIONAL JOURNAL OF MASS SPECTROMETRY
(2018)
Article
Chemistry, Physical
J. D. Femi-Oyetoro, K. Yao, K. Roccapriore, P. A. Ecton, R. Tang, J. D. Jones, G. Verbeck, J. M. Perez
APPLIED SURFACE SCIENCE
(2019)
Article
Materials Science, Coatings & Films
John D. Femi-Oyetoro, Kevin Yao, Runtian Tang, Phillip Ecton, Kevin Roccapriore, Ashley Mhlanga, Guido Verbeck, Duncan L. Weathers, Jose M. Perez
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2019)
Article
Chemistry, Analytical
Holly-May Lewis, Roger P. Webb, Guido F. Verbeck, Josephine Bunch, Janella de Jesus, Catia Costa, Vladimir Palitsin, John Swales, Richard J. A. Goodwin, Patrick Sears, Melanie J. Bailey
ANALYTICAL CHEMISTRY
(2019)
Article
Toxicology
Subhayu Nayek, Imesha W. De Silva, Roberto Aguilar, Amie K. Lund, Guido F. Verbeck
Summary: Silver nanoparticles have diverse applications in medicine and various industries. Inhalation of these nanoparticles leads to accumulation in the lungs, liver, and kidneys, resulting in systemic toxicity.
JOURNAL OF APPLIED TOXICOLOGY
(2021)
Article
Instruments & Instrumentation
Subhayu Nayek, Roberto Aguilar, Lauren A. Juel, Guido F. Verbeck
REVIEW OF SCIENTIFIC INSTRUMENTS
(2020)
Article
Biochemical Research Methods
Imesha W. De Silva, Alleigh Nicole Couch, Guido F. Verbeck
Summary: The study investigates the growing threat of fentanyl and its related synthetic analogs to public safety, and introduces a rapid detection method using paper spray mass spectrometry (PS-MS) with Teslin substrate, which requires minimal sample for analysis and can improve the accurate detection of synthetic opioids. The research also highlights the potential of PS-MS for enhancing the structural characterization of complex samples with minimal interference of isobaric components.
JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY
(2021)
Article
Environmental Sciences
Subhayu Nayek, Amie K. Lund, Guido F. Verbeck
Summary: The study found that exposure to silver nanoparticles can lead to increased hepatic RAS signaling, inflammation, macrophage infiltration, and oxidative stress in rats.
ENVIRONMENTAL TOXICOLOGY
(2022)
Article
Physics, Atomic, Molecular & Chemical
Camila A. Virgen, James D. Fox, Peter Santariello, Jaime L. Winfield, Kenneth C. Wright, Guido F. Verbeck
Summary: There is a growing demand for the development and improvement of technology used for the detection and identification of Chemical Warfare Agents. The current detection technology used by the U.S. government, while sensitive, is not considered rapid. The Membrane Inlet Mass Spectrometric (MIMS) technology on a portable system has shown success in rapid analysis and identification of CWA simulants, outperforming current FTIR and LCD systems in terms of speed.
INTERNATIONAL JOURNAL OF MASS SPECTROMETRY
(2021)
Article
Chemistry, Analytical
Imesha W. De Silva, Subhayu Nayek, Vijay Singh, Jay Reddy, John K. Granger, Guido F. Verbeck
Review
Chemistry, Analytical
Imesha W. De Silva, Amanda R. Kretsch, Holly-May Lewis, Melanie Bailey, Guido F. Verbeck
Article
Chemistry, Analytical
Imesha W. De Silva, Darren T. Converse, Lauren A. Juel, Guido F. Verbeck
ANALYTICAL METHODS
(2019)
Article
Hematology
Weam Fallatah, Imesha W. De Silva, Guido F. Verbeck, Pudur Jagadeeswaran