Herein, we have shown security codes based on an advanced anti-counterfeiting material
that are difficult to duplicate and are substantially distinct from the present technology. The …

A simple approach is described to fabricate an electrically, thermally, and optically
responsive polarization Bragg grating, using a dual‐frequency liquid crystal (LC) doped with …

Electrical reconfiguration of the cholesteric liquid crystal phase is subject to extensive prior
research. Here, a distinctive composition that allows the typically singular selective reflection …

Tunable photonic optical bandgaps materials and devices have attracted many interests
since the beginning of the second millennia. The cholesteric liquid crystals and their …

Emerging applications requiring light beam manipulation, such as high-efficiency sunlight
concentrators for solar cells, switchable micro-lens arrays for autostereoscopic displays …

Spatially continuous tunable optical notch and band-pass filter systems that cover the visible
(VIS) and near-infrared (NIR) spectral ranges from∼ 460 nm to∼ 1,000 nm are realized by …

Cholesteric liquid crystalline mixture with photo-, electro-controllable optical properties was
prepared and the features of its switching behavior were demonstrated. The working …

We present an experimental study of an electrically tunable laser based on liquid-crystal
elements and analyse theoretically its main working principles. The laser structure includes …

A near-infrared (NIR) filter with sphere phase liquid crystal (SPLC) is proposed, which shows
a low operating electric field and large temperature-gradient modulations. The central …

We create a one-dimensional photonic crystal with strong polarization dependence and
tunable by an applied electric field. We accomplish this in a planar microcavity by …