  Topological spin and polar textures have fascinated people in different areas
of physics and technologies. However, the observations are limited in magnetic
and solid-state ferroelectric systems. Ferroelectric nematic is the first
liquid-state ferroelectric that would carry many possibilities of spatially
distributed polarization fields. Contrary to traditional magnetic or
crystalline systems, anisotropic liquid crystal interactions can compete with
the polarization counterparts, thereby setting a challenge in understating
their interplays and the resultant topologies. Here, we discover chiral
polarization meron-like structures during the emergence and growth of quasi-2D
ferroelectric nematic domains, which are visualized by fluorescence confocal
polarizing microscopy and second harmonic generation microscopies. Such
micrometre-scale polarization textures are the modified electric variants of
the magnetic merons. Unlike the conventional liquid crystal textures driven
solely by the elasticity, the polarization field puts additional topological
constraints, e.g., head-to-tail asymmetry, to the systems and results in a
variety of previously unidentified polar topological patterns. The chirality
can emerge spontaneously in polar textures and can be additionally biased by
introducing chiral dopants. An extended mean-field modelling for the
ferroelectric nematics reveals that the polarization strength of systems plays
a dedicated role in determining polarization topology, providing a guide for
exploring diverse polar textures in strongly-polarized liquid crystals.
