Search Results - "Alava, Mikko J."

Machine learning plastic deformation of crystals by Salmenjoki, Henri, Alava, Mikko J., Laurson, Lasse

“…Plastic deformation of micron-scale crystalline solids exhibits stress-strain curves with significant sample-to-sample variations. It is a pertinent question…”
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Effects of precipitates and dislocation loops on the yield stress of irradiated iron by Lehtinen, Arttu, Laurson, Lasse, Granberg, Fredric, Nordlund, Kai, Alava, Mikko J.

“…Plastic deformation of crystalline materials is governed by the features of stress-driven motion of dislocations. In the case of irradiated steels subject to…”
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Modelling aerosol-based exposure to SARS-CoV-2 by an agent based Monte Carlo method: Risk estimates in a shop and bar by Salmenjoki, Henri, Korhonen, Marko, Puisto, Antti, Vuorinen, Ville, Alava, Mikko J

“…Present day risk assessment on the spreading of airborne viruses is often based on the classical Wells-Riley model assuming immediate mixing of the aerosol…”
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Emergent magnetic monopole dynamics in macroscopically degenerate artificial spin ice by Farhan, Alan, Saccone, Michael, Petersen, Charlotte F, Dhuey, Scott, Chopdekar, Rajesh V, Huang, Yen-Lin, Kent, Noah, Chen, Zuhuang, Alava, Mikko J, Lippert, Thomas, Scholl, Andreas, van Dijken, Sebastiaan

“…Magnetic monopoles, proposed as elementary particles that act as isolated magnetic south and north poles, have long attracted research interest as magnetic…”
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Nanoscale control of competing interactions and geometrical frustration in a dipolar trident lattice by Farhan, Alan, Petersen, Charlotte F., Dhuey, Scott, Anghinolfi, Luca, Qin, Qi Hang, Saccone, Michael, Velten, Sven, Wuth, Clemens, Gliga, Sebastian, Mellado, Paula, Alava, Mikko J., Scholl, Andreas, van Dijken, Sebastiaan

“…Geometrical frustration occurs when entities in a system, subject to given lattice constraints, are hindered to simultaneously minimize their local…”
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Irreversibility transition of colloidal polycrystals under cyclic deformation by Jana, Pritam Kumar, Alava, Mikko J., Zapperi, Stefano

“…Cyclically loaded disordered particle systems, such as granular packings and amorphous media, display a non-equilibrium phase transition towards…”
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Scalable method for bio-based solid foams that mimic wood by Reichler, Mikael, Rabensteiner, Samuel, Törnblom, Ludwig, Coffeng, Sebastian, Viitanen, Leevi, Jannuzzi, Luisa, Mäkinen, Tero, Mac Intyre, Jonatan R., Koivisto, Juha, Puisto, Antti, Alava, Mikko J.

“…Mimicking natural structures allows the exploitation of proven design concepts for advanced material solutions. Here, our inspiration comes from the…”
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Thermodynamics of emergent magnetic charge screening in artificial spin ice by Farhan, Alan, Scholl, Andreas, Petersen, Charlotte F., Anghinolfi, Luca, Wuth, Clemens, Dhuey, Scott, Chopdekar, Rajesh V., Mellado, Paula, Alava, Mikko J., van Dijken, Sebastiaan

“…Electric charge screening is a fundamental principle governing the behaviour in a variety of systems in nature. Through reconfiguration of the local…”
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Bursts of activity in collective cell migration by Chepizhko, Oleksandr, Giampietro, Costanza, Mastrapasqua, Eleonora, Nourazar, Mehdi, Ascagni, Miriam, Sugni, Michela, Fascio, Umberto, Leggio, Livio, Malinverno, Chiara, Scita, Giorgio, Santucci, Stéphane, Alava, Mikko J., Zapperi, Stefano, La Port, Caterina A. M.

“…Dense monolayers of living cells display intriguing relaxation dynamics, reminiscent of soft and glassy materials close to the jamming transition, and migrate…”
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A surface topography analysis of the curling stone curl mechanism by Honkanen, Viktor, Ovaska, Markus, Alava, Mikko J., Laurson, Lasse, Tuononen, Ari J.

“…The curling motion of the curling stone on ice is well-known: if a small clockwise rotational velocity is imposed to the stone when it is released, in addition…”
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Fluctuations and scaling in creep deformation by Rosti, Jari, Koivisto, Juha, Laurson, Lasse, Alava, Mikko J

“…The spatial fluctuations of deformation are studied in the creep in Andrade's power law and the logarithmic phases, using paper samples. Measurements by the…”
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Portevin–Le Chatelier effect: modeling the deformation bands and stress-strain curves by Mäkinen, Tero, Ovaska, Markus, Laurson, Lasse, Alava, Mikko J.

“…In the Portevin–Le Chatelier (PLC) effect sample plastic deformation takes place via localized bands. We present a model to account for band dynamics and the…”
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Probing the transition from dislocation jamming to pinning by machine learning by Salmenjoki, Henri, Laurson, Lasse, Alava, Mikko J.

“…Collective motion of dislocations is governed by the obstacles they encounter. In pure crystals, dislocations form complex structures as they become jammed by…”
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Author Correction: Nanoscale control of competing interactions and geometrical frustration in a dipolar trident lattice by Farhan, Alan, Petersen, Charlotte F., Dhuey, Scott, Anghinolfi, Luca, Qin, Qi Hang, Saccone, Michael, Velten, Sven, Wuth, Clemens, Gliga, Sebastian, Mellado, Paula, Alava, Mikko J., Scholl, Andreas, van Dijken, Sebastiaan

“…The original version of this article contained an error in the legend to Figure 4. The yellow scale bar should have been defined as ‘~600 nm’, not ‘~600 µm’…”
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Effects of surface curvature and dislocation dynamics: Dynamical deformation mechanisms for uniaxial compression tests at the nanoscale by Rovaris, Fabrizio, Papanikolaou, Stefanos, Alava, Mikko J.

“…The understanding of size effects in micro-crystal plasticity has been in-part based on controlled uniaxial mechanical testing of crystalline micropillars that…”
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Role of disorder in the size scaling of material strength by Alava, Mikko J, Nukala, Phani K V V, Zapperi, Stefano

“…We study the sample-size dependence of the strength of disordered materials with a flaw, by numerical simulations of lattice models for fracture. We find a…”
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Quenched pinning and collective dislocation dynamics by Ovaska, Markus, Laurson, Lasse, Alava, Mikko J.

“…Several experiments show that crystalline solids deform in a bursty and intermittent fashion. Power-law distributed strain bursts in compression experiments of…”
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Avalanches in 2D dislocation systems: plastic yielding is not depinning by Ispánovity, Péter Dusán, Laurson, Lasse, Zaiser, Michael, Groma, István, Zapperi, Stefano, Alava, Mikko J

“…We study the properties of strain bursts (dislocation avalanches) occurring in two-dimensional discrete dislocation dynamics models under quasistatic…”
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Evolution of the average avalanche shape with the universality class by Laurson, Lasse, Illa, Xavier, Santucci, Stéphane, Tore Tallakstad, Ken, Måløy, Knut Jørgen, Alava, Mikko J

“…A multitude of systems ranging from the Barkhausen effect in ferromagnetic materials to plastic deformation and earthquakes respond to slow external driving by…”
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Mechanics of disordered auxetic metamaterials by Hanifpour, Maryam, Petersen, Charlotte F., Alava, Mikko J., Zapperi, Stefano

“…Auxetic materials are of great engineering interest not only because of their fascinating negative Poisson’s ratio, but also due to the possibility to increase…”
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