Pages
- 1
- 2
- document
-
Prakash, Suriya (author), Perrin, H.R.L. (author), Botto, L. (author)Particles trapped at a fluid-fluid interface by capillary forces can form a monolayer that jams and buckles when subject to uniaxial compression. Here we investigate experimentally the buckling mechanics of monolayers of millimeter-sized rigid plates trapped at a planar fluid-fluid interface subject to uniaxial compression in a Langmuir...journal article 2024
- document
-
Perrin, H.R.L. (author), Li, H. (author), Botto, L. (author)Buckling induced by viscous flow changes the shape of sheetlike nanomaterial particles suspended in liquids. This instability at the particle scale affects collective behavior of suspension flows and has many technological and biological implications. Here, we investigated the effect of viscous hydrodynamic interactions on the morphology of...journal article 2023
- document
-
Kamal, Catherine (author), Botto, L. (author)Through boundary integral simulations and asymptotic analysis, we investigate the effect of a finite Navier slip length on the rheological proprieties of a dilute two-dimensional suspension of plate-like particles in the creeping flow limit. Specifically, we study the effects of Navier slip, particle thickness and Péclet number on the effective...journal article 2023
- document
-
Agrawal, Adyant (author), Gravelle, Simon (author), Kamal, Catherine (author), Botto, L. (author)Combining molecular dynamics (MD) and continuum simulations, we study the dynamics of propagation of a peeling front in a system composed of multilayered graphene nanosheets completely immersed in water. Peeling is induced by lifting one of the nanosheet edges with an assigned pulling velocity normal to the flat substrate. Using MD, we...journal article 2022
- document
-
Spencer, K. L. (author), Wheatland, J. A. (author), Carr, S. J. (author), Manning, A. J. (author), Bushby, A. J. (author), Gu, C. (author), Botto, L. (author), Lawrence, T. (author)Natural sediment flocs are fragile and highly heterogeneous aggregates of biogenic and minerogenic material typically with high porosity and low density. In aquatic environments dominated by fine, cohesive or mixed sediments they can dominate suspended sediment flux. Consequently, monitoring and modelling the behaviour, transport and...journal article 2022
- document
-
Engler Faleiros, D. (author), van den Bos, W. (author), Botto, L. (author), Scarano, F. (author)This work describes a modelling approach to SARS-CoV-2 dispersion based on experiments. The main goal is the development of an application integrated in Ansys Fluent to enable computational fluid dynamics (CFD) users to set up, in a relatively short time, complex simulations of virion-laden droplet dispersion for calculating the probability...journal article 2022
- document
-
Salussolia, G. (author), Kamal, C. (author), Stafford, J. (author), Pugno, N. (author), Botto, L. (author)In liquid-based material processing, hydrodynamic forces are known to produce severe bending deformations of two-dimensional (2D) materials such as graphene. The non-linear rotational and deformation dynamics of these atomically thin sheets is extremely sensitive to hydrodynamic particle-particle interactions. To investigate this problem, we...journal article 2022
- document
-
Barbieri, Ettore (author), Botto, L. (author)In the non-dissipative regime, the potential energy is the difference between the strain energy of the deforming solid and the work done by the external forces. For configuration-dependent external forces, whose direction is perpendicular to the deformed shape, we obtain a simple formula for the strain energy release rate of peeled strips...journal article 2022
- document
-
Gravelle, Simon (author), Botto, L. (author)The adsorption of graphene-oxide (GO) nanoparticles at the interface between water and vapor was analyzed using all-atom molecular simulations for single and multiple particles. For a single GO particle, our results indicate that the adsorption energy does not scale linearly with the surface coverage of oxygen groups, unlike typically assumed...journal article 2021
- document
-
Kamal, Catherine (author), Gravelle, Simon (author), Botto, L. (author)Rigid platelike particles displaying interfacial slip can attain a constant orientation in a shear flow when the slip length is sufficiently large. But actual thin particles such as single-layer graphene are flexible and prone to bending deformations when exposed to shear stress. To study the effect of bending deformation on the dynamics of...journal article 2021
- document
-
Kamal, Catherine (author), Gravelle, Simon (author), Botto, L. (author)The classical theory by Jeffery predicts that, in the absence of Brownian fluctuations, a thin rigid platelet rotates continuously in a shear flow, performing periodic orbits. However, a stable orientation is possible if the surface of the platelet displays a hydrodynamic slip length comparable to or larger than the thickness of the platelet....journal article 2021
- document
-
Gravelle, Simon (author), Kamal, Catherine (author), Botto, L. (author)Using molecular dynamics simulations we investigate the shear-induced rotational dynamics of a Brownian nanographene (hexabenzocoronene) freely suspended in a liquid. We demonstrate that, owing to a finite hydrodynamic slip at the molecular surface, these flat molecules tend to align with a constant orientation angle instead of performing the...journal article 2021
- document
-
Gravelle, Simon (author), Kamal, Catherine (author), Botto, L. (author)Liquid-phase exfoliation, the use of a sheared liquid to delaminate graphite into few-layer graphene, is a promising technique for the large-scale production of graphene. However, the microscale and nanoscale fluid-structure processes controlling the exfoliation are not fully understood. Here, we perform non-equilibrium molecular dynamics...journal article 2020
- document
-
Gu, Chuan (author), Botto, L. (author)Solid particles can adhere to fluid interfaces, modifying interfacial properties such as the surface tension and the surface elasticity. We here describe a new simulation method, the Fast Interface Particle Interaction (FIPI) method, capable of simulating on commodity hardware up to 100k particles interacting with fluid interfaces of complex...journal article 2020
- document
-
Hipólito, Tomás (author), Nabais, João Lemos (author), Carmona-Benítez, Rafael (author), Botto, Miguel Ayala (author), Negenborn, R.R. (author)This paper proposes a centralised model predictive control framework to address logistics management of supply chains of perishable goods. Meeting customer specific requirements is decisive to gain a competitive advantage in supply chain management. This fact motivates stakeholders to address solutions that continuously improve supply chain...journal article 2020
- document
-
Kamal, Catherine (author), Gravelle, Simon (author), Botto, L. (author)The large-scale processing of nanomaterials such as graphene and MoS<sub>2</sub> relies on understanding the flow behaviour of nanometrically-thin platelets suspended in liquids. Here we show, by combining non-equilibrium molecular dynamics and continuum simulations, that rigid nanoplatelets can attain a stable orientation for sufficiently...journal article 2020
- document
-
Zhang, Ran (author), Mei, Ran Andy (author), Botto, L. (author), Yang, Zhongqiang (author)The nucleation and growth of liquid droplets on solid substrates have received much attention because of the significant relevance of these multiphase processes to both nature and practical applications. There have been extensive studies on the condensation of water from the air phase on solid substrates. Here, we focus on water diffusion...journal article 2020
- document
-
Rogalski, James J. (author), Botto, L. (author), Bastiaansen, Cees W.M. (author), Peijs, Ton (author)The recently popularized method of rotary jet spinning (RJS) or centrifugal spinning is investigated to evaluate the rheological limitations of polymer solutions and melts to optimal spinnability. The influence of Newtonian or non-Newtonian behavior of the polymer on spinnability is discussed. We observe that highly viscous polymers tend to...journal article 2020
- document
-
Salussolia, Giulia (author), Barbieri, Ettore (author), Pugno, Nicola Maria (author), Botto, L. (author)We present a micromechanical analysis of flow-induced peeling of a layered 2D material suspended in a liquid, for the first time accounting for realistic hydrodynamic loads. In our model, fluid forces trigger a fracture of the inter-layer interface by lifting a flexible “flap” of nanomaterial from the surface of a suspended microparticle. We...journal article 2020
- document
-
Hipolito, Tomas (author), Nabais, Joao Lemos (author), Botto, Miguel Ayala (author), Negenborn, R.R. (author)This paper proposes three different formulations of a centralized Model Predictive Control framework to manage the logistics of continuous-flow Supply Chains subject to fluctuating demand. The Supply Chain is modeled as a dynamical system composed of several players handling commodities from the production phase to the retail phase....journal article 2020
Pages
- 1
- 2