Matches in SemOpenAlex for { <https://semopenalex.org/work/W2890415063> ?p ?o ?g. }
- W2890415063 abstract "This paper addresses triggering of oscillatory structural forces via temperature variation across an aqueous dispersion of thermoresponsive poly( N-isopropylacrylamide) (PNIPAM) nanogels confined between silica surfaces. Oscillatory structural forces are a well-known phenomenon in colloidal science, caused by interactions between molecules or colloids. Modulation of these forces usually requires changing the internal parameters of the dispersion, such as ionic strength, particle concentration, and surface charge, or changing the properties of the confining walls, such as surface roughness, potential, or elasticity. All of these parameters are usually fixed and can only be changed via exchange of the sample or the complete experimental setup. Here, a new approach is presented, combining the characteristics of smart materials with the properties of nanoparticles, using negatively charged PNIPAM nanogels. Aqueous dispersions of these nanogels express no oscillatory structural forces in the initial state (20 °C), below the volume phase transition temperature (32 °C). Heating (60 °C) reduces the nanogel size and leads to a more negative ζ-potential, which triggers the onset of oscillatory structural forces." @default.
- W2890415063 created "2018-09-27" @default.
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- W2890415063 date "2018-09-04" @default.
- W2890415063 modified "2023-10-16" @default.
- W2890415063 title "Externally Triggered Oscillatory Structural Forces" @default.
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- W2890415063 doi "https://doi.org/10.1021/acs.langmuir.8b02284" @default.
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