Interface Focus最新文献

Dynamic elastocapillary coalescence of fish gill lamellae. 鱼鳃片的动态弹性毛细血管聚并。

IF 3.6 3区生物学

Interface Focus Pub Date : 2025-05-16 eCollection Date: 2025-05-01 DOI: 10.1098/rsfs.2024.0053

Chengzhang Li, Andy J Turko, Olivia Stanton, Sameh Tawfick

{"title":"Dynamic elastocapillary coalescence of fish gill lamellae.","authors":"Chengzhang Li, Andy J Turko, Olivia Stanton, Sameh Tawfick","doi":"10.1098/rsfs.2024.0053","DOIUrl":"10.1098/rsfs.2024.0053","url":null,"abstract":"Aquatic animals like fishes and larval amphibians have flexible gills with a large surface area for gas exchange. When exposed to air, gills typically collapse and coalesce due to the elastocapillary effect, reducing gas exchange and potentially causing death. To resist these effects, some amphibians are hypothesized to have evolved stiffened gills, but these elastocapillarity effects have not been investigated empirically or theoretically. Here, we examine the deformations of artificial elastomeric gill lamellae under quasi-static and dynamic liquid crossing scenarios, inspired by conditions faced by amphibious animals when leaving water. First, we discovered multiple equilibrium states when the liquid interface is pinned to the lamellae tips, where lamellae either coalesce or remain separated depending on the liquid volume constraints. Moreover, we observe a unidirectional collapse pattern, termed the 'dominos pattern', under spatially variant drainage rate. A reduced-order dynamic model provides quantitative insights into these equilibria based on the lamellae properties, liquid volumes and drainage conditions leading to dominos patterns. These results inspire novel hypotheses about how elastocapillary may influence the evolution of gill structure in amphibious species, and also provide bioinspiration for engineering applications such as polymorphic display devices using flexible lamellae.","PeriodicalId":13795,"journal":{"name":"Interface Focus","volume":"15 2","pages":"20240053"},"PeriodicalIF":3.6,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12082118/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144093591","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Surface tension-driven boundary growth in tumour spheroids. 肿瘤球体表面张力驱动的边界生长。

IF 3.6 3区生物学

Interface Focus Pub Date : 2025-05-16 DOI: 10.1098/rsfs.2024.0035

Davide Riccobelli

{"title":"Surface tension-driven boundary growth in tumour spheroids.","authors":"Davide Riccobelli","doi":"10.1098/rsfs.2024.0035","DOIUrl":"10.1098/rsfs.2024.0035","url":null,"abstract":"Growing experimental evidence highlights the relevant role of mechanics in the physiology of solid tumours, even in their early stages. While most of the mathematical models describe tumour growth as a volumetric increase in mass in the bulk, in vitro experiments on tumour spheroids have demonstrated that cell proliferation occurs in a thin layer at the boundary of the cellular aggregate. In this work, we investigate how elasticity and surface tension interact during the development of tumour spheroids. We model the spheroid as a hyperelastic material undergoing boundary accretion, where the newly created cells are deformed by the action of surface tension. This growth leads to a frustrated reference configuration, resulting in the appearance of residual stress. Our theoretical framework is validated using experimental results from the literature. Like fully developed tumours, spheroids open when subjected to radial cuts. Remarkably, this behaviour is observed even in newly formed spheroids, which lack residual stress. Through both analytical solutions and numerical simulations, we show that this phenomenon is driven by elastocapillary interactions, where the residual stress developed in grown spheroids amplifies the tumour opening. Our model's outcomes align with experimental observations and allow us to estimate the surface tension acting on tumour spheroids.","PeriodicalId":13795,"journal":{"name":"Interface Focus","volume":"15 2","pages":"20240035"},"PeriodicalIF":3.6,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12082842/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144093564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Flotation of aquatic worms and other hyponeuston. 水生蠕虫和其他浮游生物的漂浮。

IF 3.6 3区生物学

Interface Focus Pub Date : 2025-05-16 DOI: 10.1098/rsfs.2024.0057

Soohwan Kim, Harry Tuazon, Nami Ha, Ishant Tiwari, Saad Bhamla, David L Hu

引用次数: 0

Mastering the Manu-how humans create large splashes. 掌握人类如何制造大水花。

IF 3.6 3区生物学

Interface Focus Pub Date : 2025-05-16 DOI: 10.1098/rsfs.2024.0056

Pankaj Rohilla, Daehyun Choi, Halley Wallace, Kai Lauren Yung, Juhi Deora, Atharva Lele, Saad Bhamla

{"title":"Mastering the Manu-how humans create large splashes.","authors":"Pankaj Rohilla, Daehyun Choi, Halley Wallace, Kai Lauren Yung, Juhi Deora, Atharva Lele, Saad Bhamla","doi":"10.1098/rsfs.2024.0056","DOIUrl":"10.1098/rsfs.2024.0056","url":null,"abstract":"Manu jumping, a popular water diving style among M <math><mover><mtext>a</mtext> <mo>¯</mo></mover> </math> ori people in New Zealand, focuses on creating large splashes. Divers perform aerial manoeuvres such as the 'utkatasana' pose, entering the water in a V-shape, and executing underwater manoeuvres to enhance the splash size. Our study explores the underlying fluid dynamics of Manu jumping and demonstrates how two key parameters, the V-angle and the timing of body opening, can enhance Worthington jet formation. To accurately replicate human Manu jumping, we studied water entry of both passive solid objects with varying V-angles and an active body opening robot (Manubot). The analysis revealed that a 45° V-angle enhances Worthington jet formation, consistent with human diving data. This angle balances a large cavity size and a deep pinch-off depth. The body opening within a timing window of <math> <mstyle> <mrow> <msub> <mrow><mover><mi>t</mi> <mo>^</mo></mover> </mrow> <mrow><mi>r</mi></mrow> </msub> <mo>=</mo> <mn>1.1</mn> <mspace></mspace> <mo>-</mo> <mspace></mspace> <mn>1.5</mn></mrow> </mstyle> </math> synchronizes the robot's potential energies to be timely transferred to the cavity formation, producing the strongest and most vertical, i.e. ideal, Worthington jets. Based on our experimental findings, we propose a range of parameters for generating the large Manu splashes. These insights offer engineering perspectives on how to modulate underwater cavity dynamics using both passive and active body formations.","PeriodicalId":13795,"journal":{"name":"Interface Focus","volume":"15 2","pages":"20240056"},"PeriodicalIF":3.6,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12082844/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144093598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Capillarity-induced fold localization in film-substrate systems. 薄膜-衬底体系中毛细诱导的褶皱定位。

IF 3.6 3区生物学

Interface Focus Pub Date : 2025-05-16 eCollection Date: 2025-05-01 DOI: 10.1098/rsfs.2024.0054

So Nagashima, Rikuto Ota, Seishiro Matsubara, Dai Okumura

引用次数: 0

Water entry and exit in nature: review. 自然界中水的进出：回顾。

IF 3.6 3区生物学

Interface Focus Pub Date : 2025-05-16 DOI: 10.1098/rsfs.2024.0055

Sunghwan Jung

引用次数: 0

Channel deformations during elastocapillary spreading of gaseous embolisms in biomimetic leaves. 仿生叶片中气体栓塞弹性毛细血管扩散过程中的通道变形。

IF 3.6 3区生物学

Interface Focus Pub Date : 2025-05-16 DOI: 10.1098/rsfs.2024.0060

François-Xavier Gauci, Ludovic Jami, Ludovic Keiser, Céline Cohen, Xavier Noblin

{"title":"Channel deformations during elastocapillary spreading of gaseous embolisms in biomimetic leaves.","authors":"François-Xavier Gauci, Ludovic Jami, Ludovic Keiser, Céline Cohen, Xavier Noblin","doi":"10.1098/rsfs.2024.0060","DOIUrl":"10.1098/rsfs.2024.0060","url":null,"abstract":"The nucleation and/or spreading of bubbles in water under tension (due to water evaporation) can be problematic for most plants along the ascending sap network-from roots to leaves-called xylem. Due to global warming, trees facing drought conditions are particularly threatened by the formation of such embolisms, which hinders sap flow and can ultimately be fatal. Polydimethylsiloxane (PDMS)-based biomimetic leaves simulating evapotranspiration have demonstrated that, in a linear configuration, the existence of a slender constriction in the channel allows for the creation of intermittent embolism propagation (as an interaction between the elasticity of the biomimetic leaf and the capillary forces at the air/water interfaces) (Keiser et al. 2022 J. Fluid Mech. 948, A52 (doi:10.1017/jfm.2022.733); Keiser et al. 2024 J. R. Soc. Interface 21, 20240103 (doi:10.1098/rsif.2024.0103)). Here, we use analogue PDMS-based biomimetic leaves in one dimension and two dimensions. To better explore the embolism spreading mechanism, we add to the setup an additional technique, allowing to measure directly the microchannel's ceiling deformation versus time, which corresponds to the pressure variations. We present here such a method that allows one to have quantitative insights into the dynamics of embolism spreading. The coupling between channel deformations and the Laplace pressure threshold explains the observed elastocapillary dynamics.","PeriodicalId":13795,"journal":{"name":"Interface Focus","volume":"15 2","pages":"20240060"},"PeriodicalIF":3.6,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12082845/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144093588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Intracranial pulse wave velocity using 4D flow MRI: method comparison and covariate analysis. 4D血流MRI颅内脉搏波速度：方法比较及协变量分析。

IF 3.6 3区生物学

Interface Focus Pub Date : 2025-04-04 DOI: 10.1098/rsfs.2024.0036

Sergio Dempsey, Soroush Safaei, Samantha J Holdsworth, Gonzalo D Maso Talou

{"title":"Intracranial pulse wave velocity using 4D flow MRI: method comparison and covariate analysis.","authors":"Sergio Dempsey, Soroush Safaei, Samantha J Holdsworth, Gonzalo D Maso Talou","doi":"10.1098/rsfs.2024.0036","DOIUrl":"10.1098/rsfs.2024.0036","url":null,"abstract":"Intracranial pulse wave velocity (PWV) offers the potential to enhance neurovascular care when evaluating cerebrovascular disease. Using 4D flow MRI, we measured PWV in the intracranial vasculature stemming from the internal carotids and basilar arteries using three popular techniques: cross-correlation, waveform optimization and time-to-upstroke which have all been used intracranially, but never compared. Near-perfect agreement between cross-correlation and waveform optimization methods was observed, while the time-to-upstroke method estimated a significantly larger PWV and was more prone to non-physiological values in a cohort of 21 healthy individuals aged 48 ± 18 years. We then analysed our cohort PWV using an ensemble approach given the current lack of methodological consensus. This analysis identified two consistent findings. First, internal carotids measure significantly higher PWV than basilar vascular networks (3.64 ± 1.47 versus 2.53 ± 1.39 m s-1). Second, in our cohort, intracranial PWV was age-independent. We hypothesize that age independence is a healthy physiological trait to minimize microvascular strain, protecting the integrity of the peripheral bed throughout ageing and cardiac pulsatile deformation. The cause for apparent age independence remains unknown. We also identified that previous work on intracranial PWV is likely biased towards the extracranial vasculature, which may explain the study differences in PWV magnitude and the age-dependent nature.","PeriodicalId":13795,"journal":{"name":"Interface Focus","volume":"15 1","pages":"20240036"},"PeriodicalIF":3.6,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11969195/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143795379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The pulsing brain: state of the art and an interdisciplinary perspective. 脉动的大脑：最新的技术和跨学科的观点。

IF 3.6 3区生物学

Interface Focus Pub Date : 2025-04-04 DOI: 10.1098/rsfs.2024.0058

Andrea Lecchini-Visintini, Jacobus J M Zwanenburg, Qiuting Wen, Jennifer K Nicholls, Thomas Desmidt, Stefan Catheline, Jatinder S Minhas, Chiara Robba, Mariia Dvoriashyna, Alexandra Vallet, Jeffrey Bamber, Mehmet Kurt, Emma M L Chung, Samantha Holdsworth, Stephen J Payne

引用次数: 0

Feasibility of single-shot multi-slice DENSE MRI at 7 T for strain tensor imaging in a paediatric population. 7 T时单次多层致密MRI应变张量成像在儿科人群中的可行性。

IF 3.6 3区生物学

Interface Focus Pub Date : 2025-04-04 DOI: 10.1098/rsfs.2024.0047

Merlijn C E van der Plas, Elisabeth C van der Voort, Jannie P Wijnen, Marita H Partanen, Jacobus J M Zwanenburg

{"title":"Feasibility of single-shot multi-slice DENSE MRI at 7 T for strain tensor imaging in a paediatric population.","authors":"Merlijn C E van der Plas, Elisabeth C van der Voort, Jannie P Wijnen, Marita H Partanen, Jacobus J M Zwanenburg","doi":"10.1098/rsfs.2024.0047","DOIUrl":"10.1098/rsfs.2024.0047","url":null,"abstract":"Many children who have been treated for a posterior-fossa tumour experience neurocognitive problems after treatment with surgery, radiotherapy and/or chemotherapy, which significantly impact their quality of life. Knowledge about these underlying mechanisms is limited at this point. The displacement encoding with stimulated echoes (DENSE) sequence magnetic resonance imaging (MRI) at 7 T can be used to measure brain tissue pulsations, and provide information on both the blood vessels and microstructure simultaneously, which are potentially relevant parameters to assess these underlying mechanisms. A single-shot multi-slice DENSE sequence was used to obtain brain motion maps from which strain maps could be derived on a voxel-wise level. The robustness of this MRI sequence was studied using the root mean square displacement that was obtained during the registration in the analysis of the DENSE series. Although the paediatric participants exhibited noticeable head movement during the MR acquisition, good-quality strain maps were still obtained, displaying expected patterns similar to those seen in adults.","PeriodicalId":13795,"journal":{"name":"Interface Focus","volume":"15 1","pages":"20240047"},"PeriodicalIF":3.6,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11969189/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143795370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0