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Papers
61,005 resultsShowing papers similar to In-situ observation of the initiation of plasticity by nucleation of prismatic dislocation loops
ClearDislocation-mediated relaxation in nanograined columnar palladium films revealed by on-chip time-resolved HRTEM testing
Time-resolved electron microscopy of nanograined palladium films revealed unexpectedly large creep rates at room temperature, caused by dislocation movement at tiny grain boundaries. This nanomaterials science study addresses deformation in thin metallic films and has no relevance to microplastics research.
Advances on in situ TEM mechanical testing techniques: a retrospective and perspective view
This paper is not about microplastics; it reviews advances in in situ transmission electron microscopy techniques for observing how materials deform under mechanical stress at the nanoscale.
Unravelling dislocation networks in metals
Researchers developed a detailed model to measure and describe the network of tiny defects called dislocations inside metal materials, which affect how metals deform under stress. By linking dislocation density and segment length to mechanical test data, the model improves understanding of how metals behave during plastic deformation — the irreversible bending or shaping of metal.
Differentiation of Deformation Modes in Nanocrystalline Pd Films Inferred from Peak Asymmetry Evolution UsingIn SituX-Ray Diffraction
This materials science study used synchrotron X-ray diffraction to examine how nanocrystalline palladium films deform under tension, finding evidence of a transition from grain-boundary-based to dislocation-based deformation mechanisms. This is a nanomaterials research paper with no relevance to environmental microplastics.
Fluctuations in crystalline plasticity
This theoretical physics paper reviews the statistical patterns of intermittent plastic deformation events—called dislocation avalanches—in crystalline metals at the micro- and nanoscale. The term 'microplastic' here refers to a materials science concept about deformation behavior, not environmental plastic particles.
Probing Microplasticity in Small-Scale FCC Crystals via Dynamic Mechanical Analysis
This study used dynamic mechanical analysis to study pre-yield dislocation activity — tiny structural movements — in small-scale face-centered cubic metal crystals. It is a materials science paper on nanoscale metal plasticity with no connection to environmental microplastics.
From Micro‐ to Macroplasticity
This materials science perspective discusses the transition from microplastic deformation (below the yield stress) to macroplastic deformation in nanocrystalline metals, noting that the traditional 0.2% yield stress definition does not accurately capture when bulk plastic flow begins. This is a materials physics study on metal deformation behavior with no relevance to environmental microplastics.
Quasi-periodic events in crystal plasticity and the self-organized avalanche oscillator
Researchers experimentally compressed nickel microcrystals across three orders of magnitude in strain rate and discovered that at low rates, plastic deformation bursts become quasi-periodic rather than random, revealing a "self-organized avalanche oscillator" behavior predicted to occur wherever slow relaxation competes with sudden stress release.
Microstructural signatures of dislocation avalanches in a high-entropy alloy
This materials physics study traced how individual atomic slip events (dislocation avalanches) produce visible slip lines in a high-entropy alloy under stress. The term 'microplastic events' here refers to a materials science concept about small-scale deformation, not environmental plastic particles.
Role of Grain Boundary Sliding in Texture Evolution for Nanoplasticity
This materials science paper presents a crystal plasticity model for how grain boundary sliding affects texture evolution in nanocrystalline metals under large deformation. It is a technical metallurgy study with no connection to microplastics or environmental health.
Independence of Slip Velocities on Applied Stress in Small Crystals
This physics study examined the velocities at which crystal slip events occur during plastic deformation of tiny metal crystals, finding they are independent of applied stress over a wide range. This is a condensed matter physics study on metal deformation with no relevance to environmental microplastics.
Viscosity and transport in a model fragile metallic glass
This paper uses the term 'microplasticity' in the context of metallic glass physics, describing how thermally activated atomic movements drive deformation in amorphous metals at the microscale. This is a materials physics paper unrelated to environmental microplastic pollution.