Universal Hyperuniform Organization in Looped Leaf Vein Networks

Physical Review Letters, Journal Year: 2024, Volume and Issue: 133(2)

Published: July 8, 2024

The leaf vein network is a hierarchical vascular system that transports water and nutrients to the cells. thick primary veins form branched network, while secondary can develop closed loops forming well-defined cellular structure. Through extensive analysis of variety distinct species, we discover apparently disordered structures networks exhibit universal hyperuniform organization possess hidden order on large scales. Disorder systems lack conventional long-range order, yet they completely suppress normalized infinite-wavelength density fluctuations like crystals. Specifically, find distributions geometric centers associated with vanishing static structure factor in limit wave number k goes 0, i.e., S(k)∼k^{α}, where α≈0.64±0.021, providing an example class III hyperuniformity biology. This leads superior efficiency diffusive transport, as evidenced by much faster convergence time-dependent spreadability S(t) its longtime asymptotic limit, compared other uncorrelated or correlated but nonhyperuniform organizations. Our results also have implications for discovery design novel materials optimal transport properties.

Language: Английский

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Bioconvection in Microalgae: Review of Mathematical Models

Applied Sciences, Journal Year: 2025, Volume and Issue: 15(5), P. 2708 - 2708

Published: March 3, 2025

Bioconvection can be defined as an aggregation pattern-generating phenomenon characterized by the collective behavior of swimming microorganisms in response to external influences and self-induced fluid flow, it has attracted significant interest study microalgae. This review aims provide a comprehensive examination this concentrated population suspended microalgae definable nonlinear dynamical systems (i.e., generators spatial temporal patterns), describing clarifying underlying mechanisms, ecological implications, possible biotechnological applications different fields for improvement bioreactor design biomass cultivation, wastewater treatment, or bioremediation. The most influential models used capture complexity bioconvection are perused order explore intricate interplay internal (biological, physical, environmental) governing pattern formation dynamics alongside recent advancements modeling techniques experimental approaches.

Language: Английский

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Three-dimensional construction of hyperuniform, nonhyperuniform, and antihyperuniform disordered heterogeneous materials and their transport properties via spectral density functions

Physical review. E, Journal Year: 2025, Volume and Issue: 111(3)

Published: March 21, 2025

Heterogeneous materials are of importance in many applications, and designing them with certain properties is a crucial inverse problem. The authors develop method to construct three-dimensional disordered heterogeneous by enforcing given spectral density function, which determines number effective properties. They generate various microstructures including hyperuniform, nonhyperuniform, antihyperuniform ones, significantly lower computational cost than existing methods.#AdvancingField #TechnicalAdvancement

Language: Английский

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Quantifying phase mixing and separation behaviors across length and time scales

Acta Materialia, Journal Year: 2024, Volume and Issue: 268, P. 119774 - 119774

Published: Feb. 17, 2024

Language: Английский

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Extraordinary optical and transport properties of disordered stealthy hyperuniform two-phase media

Journal of Physics Condensed Matter, Journal Year: 2024, Volume and Issue: 36(22), P. 225701 - 225701

Published: Feb. 9, 2024

Disordered stealthy hyperuniform two-phase media are a special subset of structures with novel physical properties due to their hybrid crystal-liquid nature. We have previously shown that the rapidly converging strong-contrast expansion linear fractional form effective dynamic dielectric constantεek1,ω(Torquato and Kim 2021

Language: Английский

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Nonequilibrium hyperuniform states in active turbulence

Proceedings of the National Academy of Sciences, Journal Year: 2024, Volume and Issue: 121(24)

Published: June 7, 2024

We demonstrate that the complex spatiotemporal structure in active fluids can feature characteristics of hyperuniformity. Using a hydrodynamic model, we show transition from hyperuniformity to nonhyperuniformity and antihyperuniformity depends on strength forcing be related features turbulence without with scaling inertial turbulence. Combined identified signatures Levy walks nonuniversal diffusion these systems, this allows for biological interpretation speculation nonequilibrium hyperuniform states as optimal respect robustness strategies evasion foraging.

Language: Английский

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Vegetation pattern formation in Daisyworld model with greenhouse effect

Ecological Modelling, Journal Year: 2025, Volume and Issue: 502, P. 111034 - 111034

Published: Feb. 8, 2025

Language: Английский

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Divergent drivers of temporal stability for gravel and sandy desert ecosystems around mobile deserts: Implications for ecosystem conservation and desertification management

CATENA, Journal Year: 2025, Volume and Issue: 256, P. 109088 - 109088

Published: May 1, 2025

Language: Английский

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Aeolian Sand Sorting and Soil Moisture in Arid Namibian Fairy Circles

Land, Journal Year: 2024, Volume and Issue: 13(2), P. 197 - 197

Published: Feb. 6, 2024

We studied fairy circles 20 km west of Sesriem at one the driest locations in Namibia, foot popular Sossusvlei dunes. These lack typical hexagonal order Namibian circles. After years drought, their pattern is more similar to that vegetation rings, due sparse area between Cross-section measurements soil water content (SWC) show upper layer (12 cm) very dry (~1%) and much below wilting point Stipagrostis ciliata grasses, whereas deeper wetter (4%). The grain size distribution samples taken from inside outside reveals considerable heterogeneity fractions aeolian (wind-driven) sand sorting. bare contains coarser grains, ground surface covered by megaripples. There a linear trend vertical moisture gradient median diameter. Fine particles trapped on vegetated edges circle result small nebkhas increase retention surface. loose topsoil may prevent recolonization new seedlings with short root lengths Our results highlight role transport deposition desert environments seem support notion formation be affected interplay sorting gradients.

Language: Английский

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Vibrational Properties of Disordered Stealthy Hyperuniform 1D Atomic Chains

Journal of Physics Condensed Matter, Journal Year: 2024, Volume and Issue: 36(28), P. 285703 - 285703

Published: April 5, 2024

Abstract Disorder hyperuniformity is a recently discovered exotic state of many-body systems that possess hidden order in between perfect crystal and completely disordered system. Recently, this novel has been observed number quantum materials including amorphous 2D graphene silica, which are endowed with unexpected electronic transport properties. Here, we numerically investigate 1D atomic chain models, crystalline, stealthy hyperuniform (SHU) as well randomly perturbed atom packing configurations to obtain quantitative understanding how the unique SHU disorder affects vibrational properties these low-dimensional materials. We find chains lower cohesive energies compared chains, implying their potential reliability experiments. Our inverse partition ratio (IPR) calculations indicate can support fully delocalized states just like crystalline over wide range frequencies, i.e. ω ∈ ( 0 , 100 stretchy="false">) cm −1 , suggesting superior phonon behaviors within was traditionally considered impossible systems. Interestingly, observe emergence group highly localized associated \sim 200$?> ∼ 200 characterized by significant peak IPR density at corresponding frequency, potentially useful for decoupling electron degrees freedom. These have implications design engineering thermal phononic applications.

Language: Английский

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