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Microcracks in materials reflect their mechanical properties. The quantification of the number or orientation of such cracks is thus essential in many fields, including engineering and geology. In biology, cracks in soft tissues can reflect adhesion defects, and the analysis of their pattern can help to deduce the magnitude and orientation of tensions in organs and tissues. Here, we describe a semi-automatic method amenable to analyze cell separations occurring in the epidermis of seedlings. Our protocol is applicable to any image exhibiting small cracks, and thus also adapted to the analysis of emerging cracks in animal tissues and materials.
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http://dx.doi.org/10.21769/BioProtoc.3036 | DOI Listing |
Antimicrob Steward Healthc Epidemiol
September 2025
Center for Access and Delivery Research and Evaluation (CADRE), Iowa City VA Healthcare System, Iowa City, IA, USA.
Background: Ultraviolet-C (UV-C) radiation has emerged as a widely adopted disinfection technology in healthcare settings due to its germicidal effectiveness. However, concerns have grown regarding the potential degradation of materials, particularly polymeric surfaces, subjected to repeated UV-C exposure. Understanding the extent, mechanism, and contributing factors of UV-C-induced material degradation is essential for safe and sustainable implementation.
View Article and Find Full Text PDFProc Natl Acad Sci U S A
September 2025
McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, TX 78712.
Many soft, tough materials have emerged in recent years, paving the way for advances in wearable electronics, soft robotics, and flexible displays. However, understanding the interfacial fracture behavior of these materials remains a significant challenge, owing to the difficulty of quantifying the respective contributions from viscoelasticity and damage to energy dissipation ahead of cracks. This work aims to address this challenge by labeling a series of polymer networks with fluorogenic mechanophores, subjecting them to T-peel tests at various rates and temperatures, and quantifying their force-induced damage using a confocal microscope.
View Article and Find Full Text PDFImmunotherapy
September 2025
Gustave Roussy Cancer Campus, Villejuif, France.
ACS Appl Mater Interfaces
September 2025
School of Materials Science and Engineering, Beihang University, Beijing 100191, P. R. China.
Nanostructured cubic boron nitride (NS-cBN) has attracted significant attention due to its high hardness and excellent thermal stability, yet a systematic strategy to balance strength and toughness through atomically structural design remains elusive. Here, we integrate plasticity theory with large-scale atomistic simulations to elucidate the size-dependent roles of internal defects, i.e.
View Article and Find Full Text PDFPlant Dis
September 2025
hainan universityhaikou, China, 570228;
Jackfruit (Artocarpus heterophyllus Lam.), a crucial economic crop in tropical regions, has recently been devastated by a novel gummosis disease in Hainan and Yunnan Provinces of China. This gummosis primarily affects the stems and branches of jackfruit, causing gum exudation, bark cracking, and plant death, which severely threatens the sustainable development of the industry.
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