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- W2890720674 abstract "Control over the nucleation of new phases is highly desirable but elusive. Even though there is a long history of crystallization engineering by varying physicochemical parameters, controlling which polymorph crystallizes or whether a molecule crystallizes or forms an amorphous precipitate is still a black art. Although there are now numerous examples of control using laser-induced nucleation, a physical understanding is absent and preventing progress. We will show that concentration fluctuations in the neighborhood of a liquid-liquid critical point can be harnessed by an optical-tweezing potential to induce concentration gradients. A simple theoretical model shows that the stored electromagnetic energy of the laser beam produces a free-energy potential that forces phase separation or triggers the nucleation of a new phase. Experiments in liquid mixtures using a low-power laser diode confirm the effect. Phase separation and nucleation through an optical-tweezing potential explains the physics behind non-photochemical laser-induced nucleation and suggests new ways of manipulating matter." @default.
- W2890720674 created "2018-09-27" @default.
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- W2890720674 date "2018-09-07" @default.
- W2890720674 modified "2023-09-28" @default.
- W2890720674 title "Control over phase separation and nucleation using a optical-tweezing potential" @default.
- W2890720674 cites W4250546210 @default.
- W2890720674 doi "https://doi.org/10.1117/12.2324119" @default.
- W2890720674 hasPublicationYear "2018" @default.
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