Nanoscale Segregation
Nanoscale Segregation - Related Videos
02:15
Law of Segregation
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2026
When crossing pea plants, Mendel noticed that one of the parental traits would sometimes disappear in the first generation of offspring, called the F1 generation, and could reappear in the next generation (F2). He concluded that one of the traits must be dominant over the other, thereby causing masking of one trait in the F1 generation. When he crossed the F1 plants, he found that 75% of the offspring in the F2 generation had the dominant phenotype, while 25% had the recessive phenotype.
07:15
A Novel Method for In Situ Electromechanical Characterization of Nanoscale Specimens
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Cited by 2 •
2017
Isolating electrical and thermal effects on electrically assisted deformation (EAD) is very difficult using macroscopic samples. Metallic sample micro- and nanostructures together with a custom test procedure have been developed to evaluate the impact of applied current on the formation without joule heating and evolution of dislocations on these samples.
07:40
Monitoring Spatial Segregation in Surface Colonizing Microbial Populations
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Cited by 27 •
2016
The role of assortment (spatial segregation) in evolutionary scenarios can be examined using simple microbial systems in the laboratory that allow controlled adjustment of spatial distribution. By modifying the founder cell density, various assortment levels can be visualized using fluorescently labelled bacterial strains in the colony biofilms of Bacillus subtilis.
05:41
Rapid Mix Preparation of Bioinspired Nanoscale Hydroxyapatite for Biomedical Applications
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Cited by 18 •
2017
This paper describes a novel method for the rapid manufacture of high quality bioinspired nanoscale hydroxyapatite. This biomaterial is of great significance in the manufacture of a wide range of innovative medical devices for clinical applications in orthopedics, craniofacial surgery and dentistry.
01:16
Segregation in Fresh Concrete
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2024
Segregation in fresh concrete is a phenomenon where the components of the concrete mix separate, leading to uneven distribution and compromised structural integrity. This separation typically occurs when concrete is subjected to excessive horizontal movement within forms, or when it is dropped from considerable heights or forced through narrow, winding paths. As a result, heavier coarse aggregate particles settle at the bottom, while lighter, finer materials such as cement and water rise to the...
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Atomic interactions determine which species are energetically favored near one another and which are driven apart. When these preferences differ between regions, selected elements or components can accumulate at surfaces, interfaces, grain boundaries, or other favorable sites. The resulting local composition changes may affect phase stability and alter how the material responds to mechanical, electrical, chemical, or catalytic demands.
Interfacial energy helps determine whether a compositionally distinct region is favorable and where it is most likely to form. Interfaces, surfaces, and grain boundaries can provide preferred locations because the energetic cost of maintaining a boundary depends on local composition. Consequently, interfacial-energy differences can influence the arrangement, stability, and properties of nanoscale regions.
Diffusion controls how readily selected species move toward energetically favorable locations, while processing conditions influence whether that movement occurs and how far it progresses. Changes in processing history can therefore produce different nanoscale compositions and distributions in otherwise similar materials. These variations help explain why processing can strongly affect phase stability, grain growth, transport, strength, and long-term reliability.
The effects depend on where segregated regions form and how they interact with the surrounding material. Nanoscale compositional variation can modify phase stability, grain growth, electrical transport, mechanical strength, corrosion resistance, and catalytic activity. In engineering design, these changes may be beneficial when controlled, but they can also influence performance and reliability when the processing history produces an unintended distribution.
Engineers can treat local composition as a design variable rather than only as a source of material variation. By relating atomic interactions, interfacial energy, diffusion, and processing conditions to the formation of distinct regions, they can seek tailored properties in alloys, ceramics, polymers, thin films, and nanostructured devices. The intended outcome is improved control over performance for a selected application.
Nanoscale segregation provides a way to connect a material’s processing history with its later behavior. Local compositional changes can influence phase stability, grain growth, transport, strength, corrosion resistance, and catalytic activity, so they may help explain differences in performance or long-term reliability. In engineering research, tracking these relationships supports efforts to control material structure and produce more consistent properties.