ANYL 170 |
| Control of order and orientation in block copolymers (BCPs) is the major factor limiting their use in next generation technologies such as microelectronics or memory storage. Surface templates are the leading candidate for producing highly ordered regions of various BCP morphologies, however processing times and defect concentrations are still prohibitive. A potential solution is the combination of aligning fields with surface templates. Recently a new process referred to as cold zone annealing (CZA) has been developed that utilizes dynamic thermal gradients as directing fields. Using this technique, both orientation and long-range order can be controlled. Results will be presented demonstrating the synergistic effects of CZA when combined with surface templating of BCPs. The effect of velocity, annealing direction and template dimensions on the orientational and translational order will be discussed. Using appropriate correlation functions from scattering and microscopic image analysis, it is shown that well ordered morphologies can be achieved in significantly less time than with traditional thermal annealing alone. |
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Directed Assemblies Using Surface Templates
8:25 AM-12:05 PM, Wednesday, April 9, 2008 Morial Convention Center -- Rm. 335, Oral
Division of Analytical Chemistry |