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3. AN APPROXIMATION OF THE NONLINEAR FLUID-STRUCTURE INTERACTION PROBLEM FOR A ROTATIONALLY SYMMETRIC FLOW.

Author

FILO, J. and PLUSCHKE, V.

Subjects
*FLUID-structure interaction, *CYLINDRICAL shells, *NAVIER-Stokes equations
Abstract

An approximation of the fluid-structure interaction problem in the cylindrical coordinate system is studied. First, we solve the free boundary problem by means of Schauder's fixed point theorem. After that, we regularize the linear viscoelastic cylindrical Koiter shell equation that was considered in [12], by adding higher order terms in order to get the strong convergence of the second derivatives of a sequence of radial displacements. We need the strong convergence of the second derivatives in order to guarantee the strong convergence of corresponding divergence free test functions due to [8]. [ABSTRACT FROM AUTHOR]

Published
2021

6. Electrical properties of 2,6-bis(5′-hexyl-2,2′-bithiophene-5-yl) naphthalene organic transistors: Effect of preparation conditions.

Author

Weis, M., Jakabovic, J., Donoval, D., Filo, J., and Putala, M.

Abstract

Organic field-effect transistors (OFETs) based on solution-processable organic semiconductors have experienced wide range of applications. Here we report fabrication, structure, and electrical properties of 2,6-bis(5′-hexyl-2,2′-bithiophen-5-yl)naphthalene (H2T26N) OFETs. The high-temperature tilt-casting has been used for preparation of giant grains up to 300 µm. Film structure as well as effective mobilities has been found dependent on fabrication temperature, while the threshold voltage was conserved. Electrical properties are discussed accordance to the film structure and compared with other common solution-processable organic semiconductors. [ABSTRACT FROM PUBLISHER]

Published
2012
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