Article
Engineering, Electrical & Electronic
Minghui Duan, Yi Jin, Huaian Chen, Jinjin Zheng, Changan Zhu, Enhong Chen
Summary: This article introduces a motion-estimated phase-shifting profilometry method for automatic 3-D measurements of objects in nonuniform motion. By extracting surface features and accurately detecting subpixel displacements, the method achieves alignment and compensates phase errors of the objects.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2021)
Article
Computer Science, Information Systems
Chengpu Duan, Jun Tong, Lei Lu, Jiangtao Xi, Yanguang Yu, Qinghua Guo
Summary: This paper proposes a novel data fusion approach to improve the measurement accuracy of moving objects by alleviating noise-induced errors. The method is verified through simulations and experiments to significantly improve measurement accuracy.
Article
Optics
Martin Landmann, Henri Speck, Patrick Dietrich, Stefan Heist, Peter Kuehmstedt, Andreas Tuennermann, Gunther Notni
Summary: A new method based on infrared cameras and thermal patterns has been developed to measure glossy, transparent, absorbent, or translucent objects, drastically reducing measurement time and improving measurement accuracy. This technique demonstrates reliable measurement of transparent objects in series production, achieving measurement within 1 second with 3D standard deviations less than 10 μm.
Article
Robotics
Alessio Caporali, Kevin Galassi, Gianluca Palli
Summary: This letter presents DLO3DS, an approach for estimating and tracking 3D shapes of Deformable Linear Objects (DLOs) using a cheap and compact 2D vision sensor mounted on a robot end-effector. DLO3DS can be applied in various scenarios where perception and manipulation of DLO-like structures are needed. The procedure involves extracting key points from 2D images, modeling DLOs with B-spline curves, and matching the obtained splines using a multi-view stereo-based algorithm. DLO3DS is validated on both real and simulated data, achieving a mean reconstruction error of 0.82 mm on the test set.
IEEE ROBOTICS AND AUTOMATION LETTERS
(2023)
Article
Optics
Haitao Wu, Yiping Cao, Haihua An, Yang Li, Hongmei Li, Cai Xu, Na Yang
Summary: The paper presents a modulation pattern enhancement method based on Hilbert transform to improve the quality of modulation patterns and achieve high-precision pixel matching, thereby reducing phase error introduced by motion.
Review
Biology
Michael Morgan
Summary: The perception of depth is influenced by factors such as the adaptation state of the eye and the phase difference between the two eyes.
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2023)
Article
Chemistry, Multidisciplinary
Xinchi Zhang, Xuqiao Wang, Pingping Yuan, Chaoqun Ma, Yujiao Wang, Zheqian Zhang, Pengyu Wang, Yimin Zhao, Wei Wu
Summary: Developing a self-expanding hemostatic sponge with high blood absorption and rapid shape recovery remains a challenge. In this study, a 3D-printed cuttlefish bone elastomeric sponge (CBES) was fabricated, which showed enhanced hemostatic performance compared to commercial gelatin sponges. The incorporation of cuttlefish bone powder (CBp) played a key role in promoting blood coagulation and tissue healing. CBES had an ordered channel structure that allowed for rapid blood absorption and concentration, leading to accelerated hemostasis.
Article
Computer Science, Information Systems
Xu Yang, Houxing Lin, Jie Luo, Lei Chen, Yu Lei
Summary: The proposed ternary Gray-code method, utilizing 2D modulation instead of 1D modulation, improves measurement speed and reduces variance in introduced intermediate gray values by nearly 90%, addressing limitations in traditional methods related to measuring range and noise. Experimental and simulation results confirm the superiority of the proposed method.
Article
Materials Science, Multidisciplinary
H. Yan, L. Y. Chen, J. Long, K. P. Li, P. Cai, Y. Su, L. H. Lei, B. Pan
Summary: This study proposes a method that combines digital image correlation with digital holography to measure the 3D shape and displacement of curved diffuse objects using only one setup.
EXPERIMENTAL MECHANICS
(2022)
Article
Engineering, Multidisciplinary
Tatsuo Hariyama, Kenji Maruno, Masahiro Watanabe, Satoru Takahashi
Summary: The study expanded the measurement target from simple cylindrical components to complex shapes with rough surfaces, addressing the issue of measurement error caused by laser speckle. Through experiments and technical development, error-reduction techniques based on waveform and power optical properties were proposed, effectively reducing the measurement error to less than 20 micrometers.
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
(2021)
Article
Engineering, Mechanical
Tianqi Gu, Hongxin Lin, Dawei Tang, Shuwen Lin, Tianzhi Luo
Summary: This article introduces a robust MTLS method, which can suppress multiple outliers within the whole domain by removing anomalous nodes through a two-step pre-process. The proposed method shows great robustness and accuracy in reconstructing simulation and experiment data.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2022)
Article
Computer Science, Interdisciplinary Applications
B. Aubert, T. Cresson, J. A. de Guise, C. Vazquez
Summary: This paper investigates the robustness and accuracy of intensity-based 3D/2D registration, highlighting the importance of image correspondences. It is found that converting X-ray images into DRR images can improve registration results, especially with the use of GAN-based cross-modality image-to-images translation. The proposed method is applied to precise registration of deformable vertebral models to biplanar radiographs, demonstrating its effectiveness and enhancement.
IEEE TRANSACTIONS ON MEDICAL IMAGING
(2023)
Article
Multidisciplinary Sciences
J. Farley Norman, Maheen Baig, Jiali D. Graham, Jessica L. Lewis
Summary: Grouping by common fate plays an important role in how human observers perceive environmental objects. This study found that younger adults outperformed older adults in utilizing common fate to perceive objects. It was also observed that age systematically affects the ability of older adults to detect and visually perceive objects defined by common fate.
SCIENTIFIC REPORTS
(2022)
Article
Geography, Physical
Hongdeng Jian, Xiangtao Fan, Zhenzhen Yan, Mingrui Huang
Summary: This study discusses a novel approach for 3D path prediction of moving objects in a video-augmented indoor virtual environment, showing that these methods can efficiently provide solutions for continuous tracking of moving objects.
INTERNATIONAL JOURNAL OF DIGITAL EARTH
(2021)
Article
Engineering, Multidisciplinary
Zaixing He, Lianpeng Kang, Xinyue Zhao, Shuyou Zhang, Jianrong Tan
Summary: This study proposed a new method for laser stripe center extraction based on the features of the laser stripe, which extracts seed points and iteratively grows the centerline to accurately extract the center points of the laser stripe using a gray-gravity method. Experimental results confirmed the robustness and accuracy of the method in 2D image laser stripe extraction and real 3D reconstruction applications.
MEASUREMENT SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
M. H. Nie, S. Zhang, Z. Y. Wang, T. Y. Yin, C. H. Zhang, C. L. Wu, D. X. Zhang
Summary: Laser cladding technology is an advanced material surface modification technique used for preparing high-performance coatings and repairing failed parts. This study investigated the effect of laser power on the microstructure, texture characterization, and corrosion resistance of a 17-4 PH stainless steel cladding layer. The results showed that the presence of defects such as pores in the cladding layer was influenced by the laser power. A model was established to explain the generation of pores and the Marangoni effect in laser cladding. The sample fabricated with a laser power of 2200 W exhibited better corrosion resistance due to fewer defects.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Materials Science, Multidisciplinary
X. D. Liang, S. Zhang, Z. Y. Wang, C. H. Zhang, D. X. Zhang, C. L. Wu
Summary: A gradient alloy steel prepared by laser melting deposition (LMD) undergoes changes in microstructure, grain refinement, decreased hardness and wear resistance, as well as reduced corrosion resistance after heat treatment.
MATERIALS SCIENCE AND TECHNOLOGY
(2023)
Article
Metallurgy & Metallurgical Engineering
Yu-yan Ren, Sheng-yuan Chen, Tong-yu Liu, Song Zhang, Ying-min Li
Summary: By adding different amounts of Ti into the electromagnetic stirred Al-18wt.%Mg2Si alloy, the effect of Ti on the microstructure and mechanical properties of the alloy was investigated. The results showed that the microstructure was refined after modification with Ti, due to the heterogeneous nucleation of TiAl3 particles on the alpha-Al matrix. Increasing the Ti content and holding time led to the refinement and then coarsening of the primary Mg2Si phase, resulting in an initially increasing and then decreasing trend of the alloy's mechanical properties. The optimal refinement effect of the primary Mg2Si phase and mechanical properties were achieved when 0.5wt.% Ti was added and the holding time was about 20 min.
Article
Optics
Binxun Li, Jin Du, Yujing Sun, Song Zhang, Qing Zhang
Summary: In this study, a three-dimensional finite element heat transfer model is developed using different heat source models to accurately predict the temperature distribution and melt pool geometry in selective laser melting (SLM). The experimental results show that the hybrid heat source model incorporating both surface and volumetric heat models can accurately simulate the peak temperature and melt pool geometry.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Chemistry, Organic
Cong-Cong Feng, Song-Lin Zhang
Summary: A convenient method for preparing aryl formates using difluorocarbene as a CO surrogate is described. This reaction proceeds through sequential O-difluoromethylation of phenol, followed by alpha-C-F bond functionalization of the resulting aryl difluoromethyl ether intermediate by phenol or moisture through fluorosemiacetal or orthoformate intermediates. Late-stage modification of biologically and materially active compounds is demonstrated.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2023)
Article
Chemistry, Organic
Ming-Suo Dai, Zhen-Mei Zheng, Song-Lin Zhang
Summary: Cu(iii)-CF3 compounds are reported as novel coupling reagents for ester synthesis. Carboxylic acids are transformed to trifluoromethyl ester and acyl fluoride activated species that interact with each other. This study demonstrates the broad substrate scope and late-stage application of this method, providing new opportunities for interesting reactions without transferring a CF3 group to the products.
ORGANIC & BIOMOLECULAR CHEMISTRY
(2023)
Article
Chemistry, Analytical
Yi-Hong Liao, Song Zhang
Summary: This paper presents an absolute phase unwrapping method for high-speed three-dimensional shape measurement on a single-camera, single-projector structured light system. The method utilizes speckle-embedded three-step phase-shifted patterns to obtain the wrapped phase of the object and employs the Semi-Global Matching (SGM) algorithm to establish the coarse correspondence between images. A computational framework is then used to determine the fringe order pixel by pixel. The experimental results demonstrate the high-speed and high-quality 3D measurements achieved by the proposed method for complex scenes.
Article
Nanoscience & Nanotechnology
Cuicui Li, Yilun Cai, Jinrong Hu, Jiawei Liu, Honglian Dai, Qingfang Xu, Chitengfei Zhang, Xian Zhang, Kai Liu, Marina L. Kosinova, Takashi Goto, Rong Tu, Song Zhang
Summary: This study fabricated a SiC/graphene composite film via laser chemical vapor deposition (LCVD) as a dopamine (DA) sensor. The film exhibited excellent electrocatalytic activity, low detection limit, and high sensitivity. Its three-dimensional porous network structure enhanced electron transfer rate and catalytic active site exposure, while reducing interfacial resistance. Moreover, the film showed good biocompatibility for biomedical applications.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Chao Wang, Maomao Gong, Yongjun Cheng, Victor Kimberg, Xiao-Jing Liu, Oriol Vendrell, Kiyoshi Ueda, Song Bin Zhang
Summary: We suggest using a femtosecond X-ray pulse to trigger Resonant Auger scattering (RAS) in a distorted molecule, which provides information on the core-valence electronic transition and impresses a rich fingerprint of the electronic structure and nuclear configuration. By controlling the amount of molecular distortion with varied time delay, the RAS measurements imprint both their electronic structures and changing geometries. This work showcases a new alternative pump-probe technique for mapping the core and valence dynamics with ultrashort X-ray probe pulses.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Materials Science, Coatings & Films
H. F. Zhang, S. Zhang, C. L. Wu, C. H. Zhang, X. L. Bai, X. Y. Sun, J. Chen
Summary: An investigation was conducted to study the impact of molybdenum (Mo) content on the microstructure and properties of ferritic stainless steel (FSS) produced using laser melting deposition (LMD). Stainless steel specimens with varying Mo content were manufactured with LMD, and their microstructures, microhardness, wear resistance, and corrosion resistance were evaluated. The results showed that the phase composition remained the same, consisting of α-Fe and carbide M7C3. The addition of Mo resulted in refined grains, increased microhardness, improved wear resistance, and enhanced electrochemical corrosion performance.
JOURNAL OF THERMAL SPRAY TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
H. F. Zhang, S. Zhang, C. L. Wu, C. H. Zhang, X. L. Bai, X. Y. Sun, J. Chen
Summary: The WC-Co composite coating was successfully prepared on SS 316L using plasma arc welding technology. The composition, microstructure, and microhardness of the coating were analyzed. Corrosion behavior, including electrochemical corrosion, cavitation erosion, and erosion corrosion, was tested. The results showed that the WC-Co coating had excellent metallurgical bonding with the substrate, significantly increased microhardness, and improved corrosion resistance compared to SS 316L.
MATERIALS SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Zehua Wang, Zhengbin Wang, Hongxiang Hu, Chunhua Zhang, Song Zhang, Yugui Zheng
Summary: This study investigates the effects of fluid parameters - flow velocity, impact angle, and sand impact frequency - on the erosion-enhanced corrosion of 90/10 copper-nickel alloy. By combining computational fluid dynamics simulation, wire beam electrode technology, and electrochemical measurements, the researchers find that under different flow velocities, erosion-enhanced corrosion is dominated by either the impact angle or the flow velocity. However, at intermediate flow velocities, both parameters have noticeable effects. Furthermore, the addition of sand particles increases the corrosion current density without changing the effects of flow velocity and impact angle, indicating the significant influence of all three fluid parameters on the erosion-enhanced corrosion of the alloy.
Article
Materials Science, Ceramics
Rong Tu, Zhen Liu, Qingfang Xu, Song Zhang, Qizhong Li, Xian Zhang, Marina L. Kosinova, Takashi Goto
Summary: Silicon nitride films were fabricated using halide laser chemical vapor deposition (LCVD) for surface protection of electronic devices. The study investigated the effects of deposition parameters on the crystallinity, microstructure, deposition rate, Vickers microhardness, nano-hardness, and electrical resistivity. The highest deposition rate was achieved at a temperature of 1573 K and pressure of 10 kPa. The hardness of the films increased with temperature and the electrical resistivity decreased.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Cell & Tissue Engineering
Ying-Yi Zhang, Weijie Yang, Yi Zhang, Zhanhong Hu, Yingyan Chen, Yerong Ma, Anran Yang, Zhan Shi, Hanjing Zhou, Peipei Ren, Libing Shi, Jiamin Jin, Yan Rong, Xiaomei Tong, Yin-Li Zhang, Songying Zhang
Summary: Follicle developmental capacity and oocyte quality decline with advanced maternal age. Extracellular vesicles from human umbilical cord mesenchymal stem cells (HucMSC-EVs) have potential therapeutic effects on age-related ovarian dysfunction. In vitro culture (IVC) of preantral follicles is a useful method for understanding follicle development and improving female fertility. This study demonstrated that HucMSC-EVs can improve the growth and quality of aged follicles and oocytes in vitro through gene transcription regulation.
STEM CELL REVIEWS AND REPORTS
(2023)
Article
Optics
Ya-Wei Liu, Shu-Xing Wang, Long-Quan Xu, Yi-Geng Peng, Song-Bin Zhang, Yong Wu, Jian-Guo Wang, Lin-Fan Zhu
Summary: The inelastic squared form factors of valence-shell excitations in D2 were studied using high-energy electron scattering and theoretical calculations. Discrepancies were found between the experimental results and theoretical calculations for the B1Eu+ state and vibronic states of C1 pi u and EF1 sigma g+. This can be attributed to electronic-vibrational coupling and the failure of the first Born approximation at an incident electron energy of 1500 eV. The inelastic squared form factors of D2 were in good agreement with H2 and HD, indicating no isotope effect for electronic matrix elements in the momentum space.
