Control long-range strategy

One strategy to control long-range order is to use crystallization effects. Crystallization of one component in block copolymers can lead to transformations between different copolymer morphologies and reorientations of existing microphase separation patterns. In thin films, three phase contact lines can be used to ahgn patterns resulting from crystallization of one component. 

Explain why certain important long-range air pollution control strategies will not suffice for short-term episode control, and vice versa. 

Processes which employ combinations of these strategies have proved to be much more effective at yielding uniform long-range ordered patterns than single strategies. Table 1 describes the methods used to control the microdomain orientation of a variety of thin film block copolymers [41,42,66-108],... 

Several strategies are being developed, which allow this long-range control including the use of secondary forces to hold in place monomers that subsequently will be polymerized... 

The past decade has seen a dramatic improvement in the strategies and instrumentation available to characterize the structures of interfacial supramolecular assemblies. Current thrusts are towards in situ techniques that probe the structure of the interfacial supramolecular assembly with increasingly fine spatial and time resolution. The objective of this field is to assemble reaction centers around which the environment is purposefully structured at the molecular level, but extends over supramolecular domains. The properties of the assembly are controlled not only by the properties of the molecular building blocks but especially by the interface. Therefore, the focus is on both the interfacial and bulk properties of monolayers and thin films. Issues that need to be addressed include the film thickness, structural homogeneity and long-range order, as well as the electrochemical and... 

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