For polymer particles, recent studies emphasized that the particle shape-not size-plays the dominant role in novel applications in fields ranging from nanotechnology, biomedicine, to photonics, which ...has intensified the quest for fabrication platforms of polymer colloids with complex non-spherical (anisotropic) shapes. Here, we developed a single-step, microfluidic-supported synthesis for anisotropic polyvinyl methacrylate (PVMA) nanoparticles (NPs) by combining the advantages of microfluidics (providing homogeneous conditions for the initial emulsification process) and bulk batch synthesis (providing inhomogenous conditions for the thermal polymerization). Specifically, we tested five interfacial agents regarding their direct impact on the NP shape (from isotropic spherical to anisotropic flower-like shapes) and their concentration-dependent impact (from 0.1 mM to 20 mM) on the NP diameter (from 200 nm to 50 nm). We employed vinyl methacrylate (VMA), a monomer offering two-polymerization active sites. With our work, we contribute to a fundamental understanding of colloidal polymerization towards predictive shapes below the critical 200 nm regime.
By combining the advantages of microfluidics and bulk batch synthesis, we developed a single-step, microfluidic-supported synthesis for anisotropic polyvinyl methacrylate (PVMA) polymer nanoparticles with dimensions ranging from 200 nm to 50 nm.
For polymer particles, recent studies emphasized that the particle shape—not size—plays the dominant role in novel applications in fields ranging from nanotechnology, biomedicine, to photonics, which ...has intensified the quest for fabrication platforms of polymer colloids with complex non-spherical (anisotropic) shapes. Here, we developed a single-step, microfluidic-supported synthesis for anisotropic polyvinyl methacrylate (PVMA) nanoparticles (NPs) by combining the advantages of microfluidics (providing homogeneous conditions for the initial emulsification process) and bulk batch synthesis (providing inhomogenous conditions for the thermal polymerization). Specifically, we tested five interfacial agents regarding their direct impact on the NP shape (from isotropic spherical to anisotropic flower-like shapes) and their concentration-dependent impact (from 0.1 mM to 20 mM) on the NP diameter (from 200 nm to 50 nm). Furthermore, we employed vinyl methacrylate (VMA), a monomer offering two-polymerization active sites. With our work, we contribute to a fundamental understanding of colloidal polymerization towards predictive shapes below the critical 200 nm regime.
By combining the advantages of microfluidics and bulk batch synthesis, we developed a single-step, microfluidic-supported synthesis for anisotropic polyvinyl methacrylate (PVMA) polymer nanoparticles ...with dimensions ranging from 200 nm to 50 nm.
For polymer particles, recent studies emphasized that the particle shape—not size—plays the dominant role in novel applications in fields ranging from nanotechnology, biomedicine, to photonics, which ...has intensified the quest for fabrication platforms of polymer colloids with complex non-spherical (anisotropic) shapes. Here, we developed a single-step, microfluidic-supported synthesis for anisotropic polyvinyl methacrylate (PVMA) nanoparticles (NPs) by combining the advantages of microfluidics (providing homogeneous conditions for the initial emulsification process) and bulk batch synthesis (providing inhomogenous conditions for the thermal polymerization). Specifically, we tested five interfacial agents regarding their direct impact on the NP shape (from isotropic spherical to anisotropic flower-like shapes) and their concentration-dependent impact (from 0.1 mM to 20 mM) on the NP diameter (from 200 nm to 50 nm). We employed vinyl methacrylate (VMA), a monomer offering two-polymerization active sites. With our work, we contribute to a fundamental understanding of colloidal polymerization towards predictive shapes below the critical 200 nm regime.
Common security problems when creating a new system range from basic browser authentication to physical access to servers. The security perspective in e-learning systems is often ignored, and this ...why this paper tends to emphasize common security issues when developing new Information Systems. We introduce a three layered security measure, such as: the physical control layer, the software control layer and the social engineering training. These three layers tend in various methods to secure users credentials and other data in the newly created Learning Content Management System (LMS).
The paper aim is to define a method for performing video learning data history of learner’s video watching logs, video segments or time series data in consistency with learning processes. To achieve ...this aim, a theoretical method is introduced. Sequential pattern mining with learning histories are used to extract the most difficult learning subjects. Based on this method, it is designed a model for understanding and learning the most difficult topics of students. The performed video learning history data of learner’s video watching logs makeup of stop/replay/backward data activities functions. They correspond as output of sequence of the learning histories, extraction of significant patterns by a set of sequences, and findings of learner’s most difficult/important topic from the extracted patterns. The paper mostly aim to devise the model for understanding and learning the most difficult topics through method of mining sequential pattern.
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