Topological defects in nematic films between planar degenerate surfaces. A Monte Carlo study

Cesare Chiccoli, Paolo Pasini, Luiz Roberto Evangelista, Rodolfo Teixeira de Souza and Claudio Zannoni
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Cesare Chiccoli: INFN, Sezione di Bologna, Via Irnerio 46, 40126 Bologna, Italy
Paolo Pasini: INFN, Sezione di Bologna, Via Irnerio 46, 40126 Bologna, Italy
Luiz Roberto Evangelista: Departamento Acadêmico de Física, Universidade Tecnológica Federal do Paraná, Campus Apucarana, Rua Marcílio Dias 635, CEP 86812-460 – Apucarana, (PR) Brazil3Departamento de Física, Universidade Estadual de Maringá, Avenida Colombo 5790, 87020-900 Maringá (PR) Brazil
Rodolfo Teixeira de Souza: Departamento Acadêmico de Física, Universidade Tecnológica Federal do Paraná, Campus Apucarana, Rua Marcílio Dias 635, CEP 86812-460 – Apucarana, (PR) Brazil3Departamento de Física, Universidade Estadual de Maringá, Avenida Colombo 5790, 87020-900 Maringá (PR) Brazil
Claudio Zannoni: Dipartimento di Chimica Industriale, “Toso Montanari†and INSTM, Università di Bologna, Viale Risorgimento 4, I-40136 Bologna, Italy

International Journal of Modern Physics C (IJMPC), 2022, vol. 33, issue 02, 1-12

Abstract: The molecular organization of a nematic film sandwiched between two planar randomly aligned surfaces is studied by means of detailed Monte Carlo simulations. The formation as well as the evolution of topological defects induced by these particular boundary conditions are investigated. The resulting defect structure is compared with the one induced by hybrid aligned surfaces. The observation of such defects and some features of their structures can be associated with geometric parameters of the film and with properties of the confining surfaces.

Keywords: Topological defects; planar degenerated anchoring; Monte Carlo simulations; nematic liquid crystals (search for similar items in EconPapers)
Date: 2022
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DOI: 10.1142/S0129183122500164

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