Hierarchical Structured Polymeric Materials in Nanotechnology

Harnessing light to create defect-free, hierarchically structured polymeric materials.

Computer simulations reveal how photoinduced chemical reactions in polymeric mixtures can be exploited to create long-range order in materials with features that range from the submicron to the nanoscale. The process is initiated by shining a spatially uniform light on a photosensitive AB binary blend, which thereby undergoes both a reversible chemical reaction and a phase separation. When a we...

VARIATIONS IN PLATELET POLYMERIC MATERIAlS

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Polymeric triple-shape materials.

Shape-memory polymers represent a promising class of materials that can move from one shape to another in response to a stimulus such as heat. Thus far, these systems are dual-shape materials. Here, we report a triple-shape polymer able to change from a first shape (A) to a second shape (B) and from there to a third shape (C). Shapes B and C are recalled by subsequent temperature increases. Whe...

Polymeric Nanocomposite Materials

of Nanotechnology and Materials Science

Technology refers to the application of knowledge for human benefits. Nanotechnology has been defined as ‘the understanding and control of matter at dimensions of roughly 1 100 nanometers, where unique phenomena enable novel applications’[1]. Nanotechnology is unique in the sense that it enables us to observe, synthesize and manipulate things at the nanometer scale[2]. The word nano is derived ...