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Corrigendum to "Effect of cell imprinting on viability and drug susceptibility of breast cancer cells to doxorubicin" [Acta Biomaterialia, 2020, 113, 119-129] (Acta Biomaterialia (2020) 113 (119–129), (S1742706120303287), (10.1016/***.2020.06.007))

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Acta Biomaterialia 2025年 198卷 571-572页

作者： Shahriyari, Fatemeh Janmaleki, Mohsen Sharifi, Shahriar Hesar, Milad Eyvazi Hoshian, Sasha Taghiabadi, Reza Razaghian, Ahmad Ghadiri, Majid Peirovi, Afshin Mahmoudi, Morteza Nezhad, Amir Sanati Khademhosseini, Ali Division of Engineering in Medicine Department of Medicine Brigham and Women's Hospital Harvard Medical School CambridgeMA United States Division of Health Sciences & Technology Harvard-Massachusetts Institute of Technology Massachusetts Institute of Technology CambridgeMA United States Department of Materials Engineering Faculty of Engineering Imam Khomeini International University Qazvin Iran Biomedical Engineering Graduate Program University of Calgary Canada Precision Health Program and Department of Radiology Michigan State University East LansingMI48824 United States RWTH Aachen University Templergraben 55 Aachen52062 Germany Department of Chemistry and Materials Science Aalto University School of Chemical Engineering Espoo Finland Department of Mechanical Engineering Faculty of Engineering Imam Khomeini International University Qazvin Iran Nano-Biotechnology Department Pasteur Institute of Iran Tehran Iran Departments of Bioengineering Chemical and Biomolecular Engineering and Radiological Sciences Center for Minimally Invasive Therapeutics California NanoSystems Institute University of California – Los Angeles Los AngelesCA United States Terasaki Institute for Biomedical Innovation Los AngelesCA United States

The authors regret to report that the images for panels h (Plain PDMS) and I (MCF7-imprinted PDMS) in Fig. 3 were mistakenly taken from the same dataset, resulting in the omission of the correct image in panel h for the Plain PDMS day 7 image. We sincerely apologize for this error. For an accurate representation, please see the corrected Fig. 3 provided here along with its original figure caption. This does not affect the validity of the statistical analyses or the overall conclusions drawn from the study. © 2025

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Janus MoSSe Nanotubes on 1D SWCNT-BNNT van der Waals Heterostructure

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Small 2025年 e2412454页

作者： Yang, Chunxia Lin, Qingyun Sato, Yuta Gao, Yanlin Zheng, Yongjia Wang, Tianyu Ma, Yicheng Dai, Wanyu Li, Wenbin Maruyama, Mina Okada, Susumu Suenaga, Kazu Maruyama, Shigeo Xiang, Rong Department of Mechanical Engineering The University of Tokyo Tokyo113-8656 Japan Center of Electron Microscopy State Key Laboratory of Silicon and Advanced Semiconductor Materials School of Material Science and Engineering Zhejiang University Hangzhou310027 China Tsukuba305-8565 Japan Department of Physics Graduate School of Science and Technology University of Tsukuba Tsukuba305-8571 Japan State Key Laboratory of Fluid Power and Mechatronic Systems School of Mechanical Engineering Zhejiang University Hangzhou310027 China School of Engineering Westlake University Hangzhou310030 China The University of Osaka Osaka567-0047 Japan

Two-dimensional (2D) Janus transition metal dichalcogenide (TMDC) layers with broken mirror symmetry exhibit giant Rashba splitting and unique excitonic behavior. For their one-dimensional (1D) counterparts, the Janus nanotubes possess curvature, which introduces an additional degree of freedom to break the structural symmetry. This can potentially enhance these effects or even give rise to novel properties. Moreover, Janus MSSe nanotubes (M = W, Mo), with diameters surpassing 40 Å and Se positioned externally consistently demonstrate lower energy states compared to their Janus monolayer counterparts. However, there are limited studies on the preparation of Janus nanotubes, due to the synthesis challenge and limited sample quality. In this study, we first synthesized MoS2 nanotubes on single-walled carbon nanotube (SWCNT) and boron nitride nanotube (BNNT) heterostructures and then explored the growth of Janus MoSSe nanotubes from MoS2 nanotubes at room temperature with the assistance of H2 plasma. The successful formation of the Janus structure is confirmed by Raman spectroscopy, and atomic structure and elemental distribution of the grown samples are further characterized by advanced electronic microscopy. The synthesis of Janus MoSSe nanotubes based on SWCNT-BNNT heterostructures paves the way for further exploration of novel properties in Janus TMDC nanotubes. © 2025 The Author(s). Small published by Wiley-VCH GmbH.

关键词： Van der Waals forces

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An End-to-End Framework for Neonatal Asphyxia Detection through Video Analysis

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IEEE Access 2025年 13卷 74689-74704页

作者： Kurnianingsih Nobukawa, Sou Widyawati, Melyana Nurul Pramana, Cipta Aji, Nurseno Bayu Thohari, Afandi Nur Aziz Hendrawati, Dwiana Sato-Shimokawara, Eri Kubota, Naoyuki Department of Electrical Engineering Politeknik Negeri Semarang H. Soedarto Tembalang Central Java Semarang50275 Indonesia Department of Computer Science Chiba Institute of Technology 2-17-1 Tsudanuma Chiba Narashino275-0016 Japan Department of Postgraduate Program Poltekkes Kemenkes Semarang Jl. Tirto Agung Pedalangan Kecamatan Banyumanik Central Java Semarang50268 Indonesia Department of Obstetrics and Gynecology KRMT Wongsonegoro Hospital Jl. Tembalang Central Java Semarang50272 Indonesia Department of Mechanical Engineering Politeknik Negeri Semarang H. Soedarto Tembalang Central Java Semarang50275 Indonesia Graduate School of Systems Design Tokyo Metropolitan University 6-6 Asahigaoka Hino Tokyo191-0065 Japan

Identifying asphyxia using computer vision in real-world settings poses challenges due to varying video quality, diverse lighting conditions, and subtle color changes in the newborn's skin. This study presents an end-to-end framework for automated neonatal asphyxia detection using time series video analysis and makes three key contributions. First, the proposed framework integrates YOLOv8-based instance segmentation with advanced feature extraction across multiple color spaces and texture analysis to detect neonatal asphyxia through the multi-modal analysis of skin features in video streams. Second, we introduce a new quality-aware temporal analysis framework that includes adaptive quality assessment for evaluating frames in real time, multi-stage feature stability tracking across temporal windows, hysteresis-based decision logic for ensuring temporal consistency, and LightGBM classification with comprehensive feature engineering to assess severity. Third, we provide a curated time series video dataset of 12,973 frames from 45 neonates, of which some were healthy, and some had asphyxia of varying severity. The findings show that the YOLOv8-based instance segmentation achieved a mean average precision (mAP@0.5) of 0.925 for accurate skin region isolation, and the LightGBM classifier outperformed traditional models with an accuracy of 0.998 and an F1-score of 0.998. The system maintains real-time processing at 30 FPS for normal and mild asphyxia cases with a minor reduction to 20 FPS in more challenging scenarios and exhibits robust temporal stability across severity levels, with consistency scores above 0.90. This framework has the potential to enhance neonatal care through continuous monitoring and timely intervention. © 2025 Institute of Electrical and Electronics Engineers Inc.. All rights reserved.

关键词： Deep learning

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Resolving Contradictory Estimates of Band Gaps of Bulk PdSe2: A Wannier-Localized Optimally-Tuned Screened Range-Separated Hybrid Density Functional Theory Study

arXiv

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arXiv 2025年

作者： Florio, Fred Camarasa-Gómez, María Ohad, Guy Naveh, Doron Kronik, Leeor Ramasubramaniam, Ashwin Department of Mechanical and Industrial Engineering University of Massachusetts Amherst AmherstMA01003 United States Department of Molecular Chemistry and Materials Science Weizmann Institute of Science Rehovoth7610001 Israel Institute for Nanotechnology and Advanced Materials Bar-Ilan University Ramat Gan52900 Israel Materials Science and Engineering Graduate Program University of Massachusetts Amherst AmherstMA01003 United States

Palladium diselenide (PdSe2)—a layered van der Waals material—is attracting significant attention for optoelectronics due to the wide tunability of its band gap from the infrared through the visible range as a function of the number of layers. However, there continues to be disagreement over the precise nature and value of the optical band gap of bulk PdSe2, owing to the rather small value of this gap that complicates experimental measurements and their interpretation. Here, we design and employ a Wannier-localized optimally-tuned screened range-separated hybrid (WOT-SRSH) functional to investigate the electronic bandstructures and optical absorption spectra of bulk and monolayer PdSe2. In particular, we account carefully for the finite exciton center-of-mass momentum within a time-dependent WOT-SRSH framework to calculate the indirect optical gap and absorption onset accurately. Our results agree well with the best available photoconductivity measurements, as well as with state-of-the-art many-body perturbation theory calculations, confirming that bulk PdSe2 has an optical gap in the mid-infrared (upper-bound of 0.44 eV). More generally, this work further bolsters the utility of the WOT-SRSH approach for predictive modeling of layered semiconductors. Copyright © 2025, The Authors. All rights reserved.

关键词： Layered semiconductors

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FRACTURE-BEHAVIOR OF SHORT FIBER REINFORCED THERMOPLASTICS .1. CRACK-PROPAGATION MODE AND FRACTURE-TOUGHNESS

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JOURNAL OF APPLIED POLYMER science 1985年第9期30卷 3925-3942页

作者： JANG, BZ LIEU, YK Department of Mechanical Engineering Material Science and Engineering Program Auburn University Alabama 36849

The fracture behavior of several short glass fiber reinforced thermoplastics has been studied. The fracture toughness of these materials may be related to local crack propagation mode, which is found to be highly rate dependent. At low test rates the crack growth in the reinforced polymers tend to follow a fiber avoidance mode, creating a greater area of new surfaces, which in conjunction with greater degree of interfacial debonding and fiber pullout friction leads to a higher fracture resistance. An increase in loading rate in general results in a more straight and flat crack path, as well as a lesser extent of fiber debonding and pullout. Therefore the fracture toughness is reduced although the frequency of fiber breakage is increased. The fracture behavior of these short fiber reinforced polymers appears to be dictated by the matrix properties when the loading rate is high.

关键词： THERMOPLASTICS

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Temporal refraction and reflection in modulated mechanical metabeams: theory and physical observation

arXiv

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arXiv 2025年

作者： Wang, Shaoyun Shao, Nan Chen, Hui Chen, Jiaji Qian, Honghua Wu, Qian Duan, Huiling Alù, Andrea Huang, Guoliang Department of Mechanical and Aerospace Engineering University of Missouri ColumbiaMO65211 United States Center for Mechanics Plus Under Extreme Environments School of Mechanical Engineering and Mechanics Ningbo University Ningbo315211 China Photonics Initiative Advanced Science Research Center City University of New York New YorkNY United States Physics Program Graduate Center City University of New York New YorkNY United States Department of Mechanics and Engineering Science College of Engineering Peking University Beijing100871 China

Wave reflection and refraction at a time interface follow different conservation laws compared to conventional scattering at a spatial interface. This study presents the experimental demonstration of refraction and reflection of flexural waves across a temporal boundary in a continuum-based mechanical metabeam, and unveils opportunities that emerge by tailoring temporal scattering phenomena for phononic applications. We observe these phenomena in an elastic beam attached to an array of piezoelectric patches that can vary in time the effective elastic properties of the beam. Frequency conversion and phase conjugation are observed upon a single temporal interface. These results are consistent with the temporal Snell’s law and Fresnel equations for temporal interfaces. Further, we illustrate the manipulation of amplitude and frequency spectra of flexural wave temporal refraction and reflection through multi-stepped temporal interfaces. Finally, by implementing a smooth time variation of wave impedance, we numerically and experimentally demonstrate the capabilities of the temporal metabeam to realize waveform morphing and information coding. Our findings lay the foundation for developing time-mechanical metamaterials and time-phononic crystals, offering new avenues for advanced phonon manipulation in both wave amplitude and frequency. © 2025, CC BY.

关键词： Phonons

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IMPRESSION CREEP OF A THIN-FILM BY VACANCY DIFFUSION .2. CYLINDRICAL PUNCH

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JOURNAL OF APPLIED PHYSICS 1993年第7期74卷 4390-4397页

作者： YANG, FQ LI, JCM Material Science Program Department of Mechanical Engineering University of Rochester Rochester New York 14627

The diffusion problem in the impression creep of a thin film by a cylindrical punch is analyzed. It is found that at low stresses the impression velocity is proportional to the punching stress. For the same punching stress and the same punch radius the impression velocity decreases for a rigid substrate, and increases without the substrate as the thickness of film decreases. Two limiting cases for the rigid substrate agree with the previous work, namely, the impression velocity is inversely proportional to the punch radius for impression creep of a half-space, and inversely proportional to the square of the punch radius for impression creep of a thin film. Without the substrate the impression velocity for impression creep of a thin film is inversely proportional to the thickness of the film and independent of the punch radius.

关键词： THIN FILMS CREEP VACANCIES DIFFUSION STRESSES THICKNESS

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IMPRESSION AND DIFFUSIONAL CREEP OF ANISOTROPIC MEDIA

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JOURNAL OF APPLIED PHYSICS 1995年第1期77卷 110-117页

作者： YANG, FQ LI, JCM Material Science Program Department of Mechanical Engineering University of Rochester Rochester New York 14627

Some diffusion problems in the impression and diffusional creep of aniostropic materials are analyzed. It is found that at the limit of low stress, both the diffusional creep rate and impression velocity are proportional to the applied stress. For a parallelepiped crystal under simple tension or compression in teh Z direction, the diffusional creep rate depends on all three principal diffusivities, D//X, D//Y, and D//Z. Two limiting cases depend on the quantity √D//XD//Y/D//X. When this quantity is large the creep rate is proportional to √D//Z but when it is small the creep rat eis independent of D//Z. For a cylindrical crystal under tension or compression in the axial Z direction, the creep rate depends on D//r/D//Z. When the ratio is large, the creep rate is the same as the isotroic case except that the effective diffusivity is √C//rD//Z. When the ratio is small, the creep rate is proportional to D//r and independent of D//Z. For the impression creep of a half-space the punch velocity is proportional to the geometric mean of the principal diffusivities parallel and perpendicular to the loading direction, nd inversely proportional to the punch dimension. For impression creep of a thin film deposited on an impermeable substrate under the same punching stress the impression velocity is dependent only on the diffusivity parallel to the thin film, and inversely proportional to the square of the punch dimension. Without the substrate, the impression velocity is dependent only on the diffusivity p

关键词： DIFFUSION ANISOTROPY CREEP (materials)

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IMPRESSION CREEP BY AN ANNULAR PUNCH

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MECHANICS OF materialS 1995年第1期21卷 89-97页

作者： YANG, FQ LI, JCM Material Science Program Department of Mechanical Engineering University of Rochester Rochester NY 14627 USA

The diffusion problem of impression creep of a half-space by an annular punch is analyzed. The results indicate that, at low stresses, the impression velocity is proportional to the punching stress. For the same punching stress the impression velocity increases without limit as the annular thickness approaches zero. The limiting case for a solid punch agrees with previous results, namely, (1) the impression velocity for interface diffusion is inversely proportional to the square of the punch radius, and (2) that for bulk diffusion the impression velocity is inversely proportional to the punch radius. For a thin annular punch, the impression velocity reduces to that of impression creep by a straight punch, i.e., the impression velocity for interface diffusion is inversely proportional to the square of the thickness of the annular punch, and that for bulk diffusion it is inversely proportional to the thickness of the annular punch. In fact, the straight punch is a good approximation (larger by less than 5%) if the inner radius/outer radius ratio is larger than 0.1 for interface diffusion and 0.2 for bulk diffusion.

关键词： CREEP DIFFUSION ANNULAR PUNCH IMPRESSION INDENTATION

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IMPRESSION TEST OF 63SN-37PB EUTECTIC ALLOY

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materialS science AND engineering A-STRUCTURAL materialS PROPERTIES MICROSTRUCTURE AND PROCESSING 1995年第1-2期201卷 40-49页

作者： YANG, FG LI, JCM YANG, FQ Material Science Program Department of Mechanical Engineering University of Rochester Rochester NY 14627 USA

Impression creep and stress relaxation experiments on the Sn-Pb eutectic alloy were carried out in the RSA II instrument modified to use a 0.5 mm diameter cylindrical punch under 1.5-47 MPa punching stress and within a temperature range of 25 degrees C to 110 degrees C. Based on a power law between the impression velocity and stress or between the stress rate and stress, the exponent increased with stress from 1 to 3.5 within the temperature range 80-110 degrees C and 2.5 to 6 within the range 25-65 degrees C. These exponents were generally comparable to those reported in the literature. Because of the change of stress exponent, several mechanisms have been proposed. However, the stress dependence was found to obey a hyperbolic sine function of stress for all the stresses and temperatures studied. Similarly before using the hyperbolic sine function, the activation energy was found to increase with stress, an abnormal behaviour. Fortunately, after using the hyperbolic sine function, a single activation energy, 55 kJ mol(-1) was obtained. Based on the present data, a single mechanism of interfacial viscous shearing between the two eutectic phases is proposed for both creep and stress relaxation. In addition to the effect of stress and temperature, the impression velocity based on this model should be directly proportional to the punch radius and inversely proportional to the nth (n = 1-3) power of the size of phase particles. These predictions are consistent with available information in the literature.

关键词： IMPRESSION CREEP STRESS RELAXATION SN-PB EUTECTIC ALLOY

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