Nematic liquid crystal dynamics under applied electric fields

In this paper we investigate the dynamics of liquid crystal textures in a two-dimensional nematic under applied electric fields, using numerical simulations performed using a publicly available LIquid CRystal Algorithm (LICRA) developed by the authors. We consider both positive and negative dielectric anisotropies and two different possibilities for the orientation of the electric field (parallel and perpendicular to the two-dimensional lattice). We determine the effect of an applied electric field pulse on the evolution of the characteristic length scale and other properties of the liquid crystal texture network. In particular, we show that different types of defects are produced after the electric field is switched on, depending on the orientation of the electric field and the sign of the dielectric anisotropy.Comment: 7 pages, 12 figure

Estratégia para a obtenção de cultivares de arroz com resistência genética à bicheira-da-raiz.

bitstream/item/27675/1/GrupoCultivar.pd

Podridão radicular de fitóftora em soja.

bitstream/CNPT-2010/40697/1/p-do79.pd

Implantação de campos de matrizes de cajueiro.

bitstream/item/114589/1/MATRIZES-CAJUEIRO.pd

Effects of molybdenum, nickel, and nitrogen sources on the mineral nutrition and growth of rice plants.

The aims of the current work were to measure the effect of Mo and Ni on dry-matter yield of rice plants supplied with two N sources (ammonium nitrate and urea) and to evaluate the influence of Mo and Ni on variables related to dry-matter yield, such as activity of both urease and nitrate reductase, chlorophyll, net photosynthesis rate, total N, nitrate content, and Mo and Ni concentrations in roots and shoots

Condutitvidade hisráulica do solo coeso dos tabuleiros costeiros cultivado com citros.

Avalia através da determinação da condutividade hidráulica não saturada, o movimento de água em agrissolo acinzentado coeso dos tabuleiros costeiros cultivado com citros.bitstream/CPATC/19569/1/bp-22.pdfISSN 1678-1961