Beilstein J. Nanotechnol.2018,9, 342–352, doi:10.3762/bjnano.9.34
optical microscopy on the surface of the smectic A, nematic and isotropic phases. The properties of this periodic structure are similar to the charged liquid helium surface and can be explained by nonlinear electrostatic instabilities previously described.
Keywords: focalconicdomains; free boundary
example, AFM, light reflection, high-resolution microscopy, X-ray reflection, transmission electron microscopy (TEM), etc. We have applied the four most popular microscopy tools: polarized optical microscopy, ISSA, AFM, and SNOM and compared experimental images of focalconicdomains (FCDs) [11][12][13
microscopy and ISSA images with a previous paper [15] shows complete similarity with our results. Therefore, we can conclude that classical focalconicdomains on the SmA phase free surface were observed. The model of the FCD structure is shown in Figure 10.
The FCDs are ordered in one-dimensional periodic
PDF
Figure 1:
Image of the 8CB surface structures on the SmA free surface (a) and in bulk (b), as measured with a...
Beilstein J. Nanotechnol.2017,8, 2544–2551, doi:10.3762/bjnano.8.254
boundary. The capabilities of this new experimental method, as applied for liquid crystal free boundaries, are discussed. The formation of focal conic domain structures at the smectic-A–air free boundary was detected and studied.
Keywords: focalconicdomains; free boundary; liquid crystals
classic material for observation of focalconicdomains (FCDs). FCDs appear when two competing boundary conditions take place at a boundary. In our case, the liquid crystal has strong boundary conditions on the solid substrate and the director is oriented parallel to the substrate. On the free boundary
PDF
Figure 1:
Interferometric surface structure analyzer (ISSA) study of the liquid crystal 8CB free surface in (...