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, Multidisciplinary
Wujoon Cha, Matthew F. Campbell, Kathryn Hasz, Samuel M. Nicaise, Drew E. Lilley, Takaaki Sato, Robert W. Carpick, Igor Bargatin
Summary: The new cantilever probes with hollow cross-sections and alumina walls demonstrate lower spring constants and higher bandwidths compared to traditional solid counterparts, allowing for quicker response to topography changes while being more resistant to wear.
Article
Materials Science, Multidisciplinary
Cheng-Sao Chen, Pin-Yi Chen, Wei Sea Chang, Carvyn Blaise, Yi Lin Hsieh, R. R. Chien, V. Hugo Schmidt, Yi-Shin Jou, Chi-Shun Tu
Summary: This study investigates the nano-to-micro domain structure, polarization switching, and electromechanical mechanisms in lead-free perovskite bismuth ferrite near the morphotropic phase boundary. The coexistence of ferroelectric and antiferroelectric symmetries, along with the presence of polar nano-regions and domain boundaries, were identified as the system crossed the MPB. The O 2p-Fe 3d and O 2p-Bi 6s(p) orbital hybridization were found to play key roles in the evolution of structural distortion, polarization, and electromechanical properties.
MATERIALS RESEARCH BULLETIN
(2021)
Article
Nanoscience & Nanotechnology
Wenting Wang, Kaidi Zhang, Wenhao Zhang, Yaoping Hou, Yuhang Chen
Summary: A multifunctional cantilever has been designed to enhance both contact resonance atomic force microscopy (CR-AFM) and harmonic AFM imaging, with tailored dynamic properties achieved by mass-removing or mass-adding and optimized structures fabricated using focused ion beam techniques. The improved CR frequency sensitivity and harmonic amplitude contrast and signal strength have been demonstrated on different material phases, showing potential applications in mechanical characterization and subsurface imaging in relevant fields.
Article
Materials Science, Ceramics
Hyun Wook Shin, Jong Yeog Son
Summary: In this study, the ferroelectric switching and current characteristics of BFO nanocubes were investigated, revealing their potential as storage media for ferroelectric polarization information.
CERAMICS INTERNATIONAL
(2022)
Article
Computer Science, Artificial Intelligence
Yongtao Liu, Kyle P. Kelley, Rama K. Vasudevan, Hiroshi Funakubo, Maxim A. Ziatdinov, Sergei Kalinin
Summary: This article reports on the development and implementation of a machine learning framework that actively discovers relationships between local domain structure and polarization-switching characteristics in ferroelectric materials. The framework utilizes hysteresis loops and their scalar descriptors to guide the discovery of these relationships via automated piezoresponse force microscopy and spectroscopy experiments. The results demonstrate that the discovery path and sampling points of on- and off-field hysteresis loops are largely different, indicating that they are dominated by different mechanisms. The proposed approach is applicable to a broad range of modern imaging and spectroscopy methods.
NATURE MACHINE INTELLIGENCE
(2022)
Article
Engineering, Electrical & Electronic
Nata F. S. de Bem, Michael G. Ruppert, Andrew J. Fleming, Yuen K. Yong
Summary: The article introduces an atomic force microscope cantilever with on-chip actuation and dual-sensing capabilities. A mathematical model is developed and validated, and a physical prototype is presented for calibration and validation. Experimental results demonstrate consistency with external measurements.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Article
Nanoscience & Nanotechnology
Junghoon Jahng, Eun Seong Lee
Summary: By developing a model based on coupled harmonic oscillators, we comprehensively describe the operation of photo-induced force microscopy (PiFM) and replicate all dynamic features from previous theories. Furthermore, by integrating a photo-induced thermal expansion force model, we uncover the underlying physical mechanism responsible for the unique signal behaviors observed in the sideband coupling mode.
Article
Materials Science, Multidisciplinary
Nahed Alarifi, Mahmoud A. Al-Gawati, Fahad Alnjiman, Hamad Albrithen, Abdullah N. Alodhayb
Summary: This study grew low atomic ordering Cu-Zn thin-film alloys on cosputtered Si substrates and evaluated their properties using X-ray diffraction, microelectromechanical system (MEMS), and spectroscopic ellipsometry. The results showed that the mechanical properties and electrical conductivity of the alloys were correlated with the elemental ratios and surface roughness, and can be quantitatively assessed using the extinction coefficient.
MATERIALS RESEARCH EXPRESS
(2023)
Article
Chemistry, Physical
Ryan M. Khan, Martin Rejhon, Yanxiao Li, Nitika Parashar, Elisa Riedo, Ryan R. Wixom, Frank W. DelRio, Remi Dingreville
Summary: As the field of low-dimensional materials continues to grow, there is a need for techniques to characterize the mechanical properties of these materials at the nanoscale. This paper presents a modulated nanomechanical measurement technique based on atomic-force microscopy, which enables non-destructive measurements of the elasticity of ultra-thin materials with high resolution. The technique is used to study the stiffness dependence of graphene thin films and discover a peak transverse modulus in two-layer graphene.
Article
Materials Science, Ceramics
T. S. Ilina, E. A. Skryleva, A. Yu Ermakov, T. A. Sviridova, F. O. Milovich, B. R. Senatulin, A. M. Kislyuk, E. D. Politova, G. M. Kaleva, D. A. Kiselev, Yu. N. Parkhomenko
Summary: This study investigates the properties of KNN ceramics with different ferroelectric phase content using various techniques. The correlation between PFM image, SEM phase and EDS phase composition is found. It is discovered that specimens with low ferroelectric phase content contain secondary phases with different composition and structure than the perovskite. XPS analysis reveals the presence of two different chemical states of potassium ions, inside and outside the perovskite lattice. The correlation between ferroelectric properties and K2 concentration can serve as a reliable indicator.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Multidisciplinary
Jia-Yi Ji, Ting Bao, Heng Wang, Yong Xu, Ding Zhang, Qi-Kun Xue
Summary: Lithium intercalation is an important tool for studying quantum phenomena in 2D materials, but it can cause wrinkles and cracks in the material. By using ion backgating technique, lateral intercalation in 1T-TiSe2 and 2H-NbSe2 is achieved, leading to improved sample homogeneity. This method is confirmed by low-temperature transport measurements and visualized by in situ atomic force microscopy imaging.
Article
Chemistry, Multidisciplinary
Yongtao Liu, Anna N. Morozovska, Ayana Ghosh, Kyle P. Kelley, Eugene A. Eliseev, Jinyuan Yao, Ying Liu, Sergei Kalinin
Summary: In this study, the local curvature and strain effects on polarization in CIPS were investigated using piezoresponse force microscopy and spectroscopy. The finite element Landau-Ginzburg-Devonshire model was introduced to explain the observed behaviors and decouple the curvature and strain effects in 2D CIPS. The results showed that bending induced ferrielectric domains in CIPS and the polarization-voltage hysteresis loops differed in bending and nonbending regions. These studies provide important insights into the fabrication of curvature-engineered nanoelectronic devices.
Article
Materials Science, Multidisciplinary
Gavin Hennessey, Travis Peters, Pannawit Tipsawat, Marti Checa, Liam Collins, Susan Trolier-McKinstry
Summary: This paper investigates the effect of microstructural features on domain wall motion pinning in PZT films on polycrystalline substrates. The study reveals that the behavior varies with the misorientation angle and proximity to grain boundaries. Random grain boundaries exhibit deeper minima and larger widths of influence compared to coincident site lattice boundaries. Triple points with more random boundaries exhibit non-Rayleigh behavior, suggesting deep potential minima or regions unfavorable for domain wall motion.
Article
Engineering, Electrical & Electronic
Michael G. Ruppert, Andrew J. Fleming, Yuen K. Yong
Summary: This study proposes a hybrid cantilever design with integrated piezoelectric actuators and piezoresistive sensors, which can overcome the current limitations of active microcantilevers and be fabricated using a commercial MEMS fabrication process.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
