We report an unusually strong flow-induced birefringence in an optically isotropic cubic phase occurring below the isotropic chiral conglomerate phase formed by a low-molecular-weight polycatenar mesogen. The transition into the birefringent state occurs thresholdless and the induced birefringence is comparable with that observed in polymeric systems. We suggest that the flow-induced deformation of the cubic structure is responsible for the strong rheo-optical response.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1039/d2sm01148d | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Optical clocks require an ultra-stable laser to probe and precisely measure the frequency of the narrow-linewidth clock transition. We introduce a portable ultraviolet (UV) laser system for use in an aluminum quantum logic clock, demonstrating a fractional frequency instability of approximately mod = 2 × 10. The system is based on an ultra-stable cavity with crystalline AlGaAs/GaAs mirror coatings, with a frequency quadrupling system employing two single-pass second-harmonic generation (SHG) stages.
View Article and Find Full Text PDFWe propose a low-polarization-sensitive 1 × 2 carrier-injection-type silicon photonic switch consisting of a single Mach-Zehnder interferometer, an input-/output-side polarization splitter and rotators, bidirectional light injection, and an external optical circulator. A polarization-dependent loss (PDL) of 1.3 dB was achieved using the proposed structure, whereas a PDL exceeding 17 dB was observed without the structure.
View Article and Find Full Text PDFMid-to-far-infrared (IR) spectral content is recorded using the novel self-balanced and self-phase-corrected electro-optical (EO) sampling arrangement. Self-balancing guarantees that the electric field emerging from the EO crystal yields a signal of zero via a Wollaston prism and balanced photodetector (i.e.
View Article and Find Full Text PDFIn this study, we utilized a discrete point configuration method in conjunction with genetic algorithm (GA) and particle swarm optimization (PSO) to design broadband polarization-maintaining anti-resonant fibers (PM-ARFs). The resulting structure features a confinement loss (CL) below 0.17 dB/m, birefringence of approximately 8.
View Article and Find Full Text PDFIn this study, TaO was obliquely deposited on a polymer grating, resulting in a nanostructured thin film (NTF) with pronounced anisotropic optical properties. We measured and compared the principal indices and principal axes orientations of NTFs grown on both a grating and a smooth glass substrate. By adjusting the deposition angle, we observed a significant variation in the columnar angle and principal indices of the NTF on the grating, compared to the NTF on a smooth surface.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!