Polarization gratings (PGs) enable a novel architecture for dynamic non-mechanical
steering of light over large angles and with large clear apertures. This beam steering …

Liquid crystal (LC) planar optical elements (POEs) based on photoalignment technology
have emerged as a promising approach to manipulating light in various ways. Owing to the …

This work presents research on unique optofluidic systems in the form of air channels
fabricated in PDMS and infiltrated with liquid crystalline material. The proposed LC: PDMS …

Liquid crystal (LC) based geometric phase optical elements are widely used to effectively
change the wavefront or propagation direction of light. Using photoalignment, the liquid …

Tunable diffraction gratings and phase filters are important functional devices in optical
communication and sensing systems. Polarization gratings, in particular, capable of …

In this paper, we demonstrate the first ever dual-period diffraction gratings that do not require
electrical tuning to obtain the effect of period change. Our method allows for multiplication of …

Compounds from the homologous series of (E)-4-[(4-heptyloxyphenyl) diazenyl] phenyl
alkanoates (7OABOOC m) for m= 1–19, were synthesised. The phase behaviour was …

The patterned photoalignment of nematic liquid crystal is used to produce one-dimensional
diffraction gratings. The effect the orientation of molecules in adjacent liquid crystal domains …

The discovery of liquid crystals (LCs) is dated to the year 1888, when Friedrich Reinitzer
reported his observation of the double melting points of cholesterol benzoate. The LC state …

We present an experimental and theoretical investigation of the optical diffractive properties
of electrically tuneable optical transmission gratings assembled as stacks of periodic slices …