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Articles you may be interested inDynamic mechanical and thermal behavior of novel liquid-crystalline polybutadiene-diols with azobenzene groups in side chains Biphotonic holographic recording in a liquid crystalline cyanoazobenzene side-chain polymethacrylate. Polarization, intensity, and relief gratings An analysis of the anisotropic and topographic gratings in a side-chain liquid crystalline azobenzene polyester Surface relief gratings were inscribed in the liquid-crystalline side-chain ͑LCSC͒ azopolymers using two-beam interference of near-infrared femtosecond laser pulses. The LCSC azopolymer films were prepared using acrylate-based homo-and copolymers with the azobenzene group in the side chain. The LC properties of the polymers were confirmed by differential scanning calorimetry and optical polarizing microscopy. By adjusting the writing conditions to the optimum fluence, highly efficient gratings were fabricated. This phenomenon is ascribed to a fact that the multiphoton absorption-induced photoisomerization facilitates the parallel ordering of LC mesogenic side groups and the grating formation. Even after the writing beams are removed, the grating relaxation hardly occurs. Such a very slow relaxation might be due to the collective behavior of aligned LC mesogenic side groups in the domain.

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