Article
Engineering, Electrical & Electronic
Ting Li, Huiqiong Xue, Weibing Wang
Summary: In this article, a new type of S-shaped piezoresistor was proposed to optimize the linearity of pressure sensors. Two types of silicon piezoresistive absolute pressure sensors were designed, one with tri-meander-shaped piezoresistors and the other with S-shaped piezoresistors. The results showed that the pressure sensor with S-shaped piezoresistors achieved about 30% better linearity compared to the sensor with tri-meander-shaped piezoresistors, with linearity and accuracy reaching 0.045% FS and 0.054% FS under the voltage source.
IEEE SENSORS JOURNAL
(2023)
Article
Physics, Fluids & Plasmas
R. Mark Bradley, Patrick D. Shipman
Summary: In this study, the patterns created by scanning an atomic force microscope tip over a polymer surface were investigated using a mesoscopic model. The research discovered that the steady-state solution is only stable below a critical value, beyond which periodic stick-slip motion occurs.
Article
Physics, Applied
Gwangmook Kim, YoungJun Cho, Min-Kyun Cho, Dohun Kim, Wooyoung Shim
Summary: Cantilever-free scanning probe microscopy has potential for high-throughput topography imaging. However, the current imaging mechanism lacks efficiency in detection precision and bandwidth, limiting the application of this measurement system. We present a contact resistance-based imaging system using RF reflectometry, achieving sub-micrometer-scale topography imaging with a resolution of 230 nm and a bandwidth of approximately 8.5 MHz.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Shuangying Li, Taehoon Hwang, Jungyoon Seo, Eun Ko, Dashdendev Tsogbayar, Md. Rajibur Rahaman Khan, Hwa Sung Lee
Summary: This study presents a piezoresistive sensing medium with a multilayered parallel structure to improve the conductivity and stability of the sensor. The parallel-connected structure shows significantly lower initial resistance and higher strain sensitivity compared to the single-resistive type, without hysteresis in the sensing signals.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Multidisciplinary Sciences
Jack Walker, Jamal Umer, Mahdi Mohammadpour, Stephanos Theodossiades, Stephen R. Bewsher, Guenter Offner, Hemant Bansal, Michael Leighton, Michael Braunstingl, Heinz-Georg Flesch
Summary: Using an atomic force microscope, a nanoscale wear characterization method was applied to a commercial steel substrate AISI 52100, revealing two wear mechanisms: atom attrition and elastoplastic ploughing. The study found that the length-scale effect of the material's hardness property plays an integral role in the relationship between the 'degree of wear' and load.
PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2021)
Article
Chemistry, Analytical
Luke Oduor Otieno, Bernard Ouma Alunda, Jaehyun Kim, Yong Joong Lee
Summary: Improving the imaging rate of a high-speed atomic force microscope requires specialized hardware and software, with ongoing efforts to enhance general applications. A compact HS-AFM scan-head design with minimal Z-scanner loading is presented in this study as an efficient solution for faster imaging.
Article
Chemistry, Physical
Binxin Fu, Yijue Diao, Rosa M. Espinosa-Marzal
Summary: This study reveals that pressure solution of calcite single crystals can lead to both a decrease and an increase in frictional strength. Under stress, the maintenance of undisturbed interfacial water layers promotes pressure solution, including the phenomenon of pressure-solution facilitated slip with Ca(II).
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Physics, Fluids & Plasmas
Pedro J. Martinez, Enrico Gnecco, Juan J. Mazo
Summary: This study investigates the quantifiable characteristics of wave-like features observed on polymer surfaces when examined with AFM, and demonstrates the presence of ripples and dotted regions under different parameter values. The amplitude, period, and orientation of these features are numerically estimated, revealing a cooperative process involving the scanning of multiple lines leading to the emergence of ripples.
Article
Chemistry, Analytical
Qinggang Meng, Yulan Lu, Junbo Wang, Deyong Chen, Jian Chen
Summary: This paper presents a piezoresistive pressure sensor based on SOI, with optimized design for increased sensitivity and reduced nonlinearity. The sensor is fabricated in a simplified process and shows high sensitivity, low hysteresis, good repeatability and accuracy in different temperature environments.
Article
Pharmacology & Pharmacy
Kouya Kimoto, Kento Ohashi, Yasunori Iwao, Masatoshi Karashima, Katsuhiko Yamamoto, Toshiro Fukami, Yukihiro Ikeda
Summary: In this study, we investigated the use of atomic force microscopy (AFM) to discern the individual mechanical properties of amorphous and crystalline drugs. The results showed that the elastic modulus can quantitatively distinguish between the amorphous and crystalline states and reflect the difference in preparation methods. AFM measurements using elastic modulus can provide an effective analytical tool for microscale mapping and characterization of amorphous surfaces.
INTERNATIONAL JOURNAL OF PHARMACEUTICS
(2022)
Article
Engineering, Chemical
Chenwei Li, Yating Zhang, Haijun Zhang
Summary: Nanobubbles on the solid surface play a crucial role in the removal of fine coal/minerals from slurry. This study investigates the nucleation process of surface nanobubbles and its effect on particle interaction. The findings reveal that surface hydrophobicity is more important than surface roughness in nanobubbles nucleation. The presence of nanobubbles enhances adhesion force and collision probability, leading to improved removal efficiency in flotation techniques.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Construction & Building Technology
Yun Chen, Yueqin Hou, Xiaoping Ji, Haiwei Zou, Cong Dai, Bo Chen
Summary: In this study, the micromechanical properties of aggregates were investigated using an atomic force microscope. It was found that the surface energy of aggregates is influenced by their chemical composition, and the surface energy changes differently after limewater treatment.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Automation & Control Systems
Yijie Liu, Xuexuan Li, Lin Ge, Zhen Zhang
Summary: This article introduces a novel ultralarge-area stitchless scanning probe lithography (SPL) and high-throughput in situ characterization system. The system utilizes a scanning probe microscope to generate patterns and nanoscale structures, with a maximum scanning area of 2 x 2 mm. Through an optimized control method, high-bandwidth and high-precision trajectory tracking is achieved. Experimental results demonstrate high nanolithography speed and in situ characterization throughput, opening up new avenues for ultralarge-area nanofabrication and in situ characterization research and applications.
IEEE-ASME TRANSACTIONS ON MECHATRONICS
(2023)
Article
Chemistry, Analytical
Mei Liu, Weilin Su, Xiangzheng Qin, Kai Cheng, Wei Ding, Li Ma, Ze Cui, Jinbo Chen, Jinjun Rao, Hangkong Ouyang, Tao Sun
Summary: In this study, ZnO nanomaterials were characterized using atomic force microscope (AFM) and nanomanipulator embedded in scanning electron microscope (SEM), observing surface morphology, mechanical properties, and electrical characteristics. A two-probe strategy for piezoelectric property measurement was proposed. Experimental results provide insights into ZnO manipulation and characterization criteria.
Review
Chemistry, Physical
Andrius Dzedzickis, Juste Rozene, Vytautas Bucinskas, Darius Virzonis, Inga Morkvenaite-Vilkonciene
Summary: This paper provides a systematic review of atomic force microscopy (AFM), focusing on analyzing the available technical solutions and design of different parts, particularly the cantilever. Many recent scientific articles propose innovative AFM control and imaging algorithms, some of which are based on artificial intelligence.
Article
Microscopy
C. Gao, C. Hofer, T. J. Pennycook
Summary: Ptychography provides high dose efficiency images that can reveal light elements next to heavy atoms. However, contrast reversals can occur when the projected potential becomes strong. Recent research has shown that these reversals can be counteracted by adapting the focus. This study explains why the best contrast is often found with the probe focused to the middle of the sample and highlights the importance of convergence angle in thin samples to remove contrast reversals.
Article
Microscopy
J. Lindner, U. Ross, T. Meyer, V. Boureau, M. Seibt, Ch. Jooss
Summary: Phase-shifting electron holography is an excellent method with high phase sensitivity to reveal electron wave phase information. An advanced drift correction scheme is proposed in this study, which exploits the interface of the TEM specimen and the vacuum area in the hologram. This method allows for obtaining reliable phase information.
Article
Microscopy
Ali Jaberi, Nicolas Brodusch, Jun Song, Raynald Gauvin
Summary: This study investigates knock-on damage in lithium-ion batteries (LIBs) by computing threshold displacement energies (TDEs) and performing Monte Carlo simulation. The results indicate that Li is most sensitive to knock-on damage at moderate electron energies, and TDE is the principal parameter for assessing Li sensitivity to knock-on damage across similar structures.
Article
Microscopy
Alexander Schroeder, Christopher Rathje, Leon van Velzen, Maurits Kelder, Sascha Schaefer
Summary: This study utilizes novel event-based electron detector platforms to extend the temporal resolution of electron microscopy. By training a neural network to predict electron arrival time, the researchers were able to improve the timing accuracy and achieve a promising solution for enhancing electron timing precision in various electron microscopy applications.
Article
Microscopy
Avi Auslender, Nivedita Pandey, Amit Kohn, Oswaldo Dieguez
Summary: This article describes a faster implementation based on DFT for computing the mean inner potential of crystals, providing quantum-mechanical calculations beyond the independent-atom approximation. The study also reveals the dependence of the mean inner potential on sample boundary conditions, mass density, and magnetic susceptibility, highlighting its correlation with various material properties.
Article
Microscopy
Zhidong Yang, Dawei Zang, Hongjia Li, Zhao Zhang, Fa Zhang, Renmin Han
Summary: In this work, we propose a self-supervised deep learning model for cryo-ET volumetric image denoising based on noise modeling and sparsity guidance. Experimental results demonstrate that our method can achieve reliable denoising by training on single noisy volume and outperform existing methods.
Article
Microscopy
J. Kuttruff, J. Holder, Y. Meng, P. Baum
Summary: In this study, a robust clustering algorithm is proposed that can find clusters in a continuous stream of raw data in real time. This algorithm converts pixel hits measured by hybrid pixel detectors to real single-electron events. By continuously comparing with previous hits, the algorithm efficiently identifies the merging of new and old events.
Article
Microscopy
D. G. Senturk, C. P. Yu, A. De Backer, S. Van Aert
Summary: This article presents a statistics-based method for accurately counting the number of atoms in nanostructures, especially for images acquired with low electron doses and multiple element structures.
Article
Microscopy
Mauricio J. Prieto, Lucas de Souza Caldas, Liviu C. Tanase, Thomas Schmidt, Oscar Rodriguez de la Fuente
Summary: This study presents a synchrotron-based investigation of the synthesis process of a magnetite/hematite bilayer. Ion bombardment gradually transforms hematite into magnetite, and the growth of magnetite leads to the formation of stable boundaries. These findings are significant for understanding novel oxide heterostructures.
Article
Microscopy
Emre Yoruk, Holger Klein, Stephanie Kodjikian
Summary: Beam sensitive nanomaterials pose challenges for crystallographic structure determination. A dose symmetric electron diffraction tomography (DS-EDT) method is developed to reduce beam damage and obtain complete data sets by merging individual datasets from multiple crystals.
Article
Microscopy
A. Pofelski, Y. Zhu, G. A. Botton
Summary: The precision and sensitivity of the GPA method for strain characterization is a widely discussed topic. This study introduces the concept of phase noise and analyzes the parameter of sampling to improve the precision of GPA. Experimental and theoretical results demonstrate that using a larger pixel spacing in STEM can enhance the precision and sensitivity of the GPA method.
Article
Microscopy
Sangjun Kang, Di Wang, Christian Kuebel, Xiaoke Mu
Summary: Transmission electron microscopy is a valuable tool for assessing strain fields within materials. However, using thin specimens in TEM analysis can affect atomic configuration and deformation structure.