Diffraction with asymmetric enhancement and suppression, and alternating contrast for symmetric diffraction orders is demonstrated from planar two-component optical gratings made of passive/lossy materials. Simulations agree well with the experimental diffraction pattern of the fabricated sample. Our fabrication approach uses simple, standard planar micro/nano lithography employing one photoresist and one dye. No 3D profiling is needed. The phenomena is due to the left-right asymmetric material distribution in the periodic grating, which gives rise to non-reciprocal light coupling for diffraction to the positive and negative orders.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1364/OE.24.030164 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Dark State Transport between Unitary Fermi Superfluids.
Phys Rev Lett
November 2024
Institute for Quantum Electronics and Quantum Center, ETH Zürich, 8093 Zürich, Switzerland.
The formation of dark states is an important concept in quantum sciences, but its compatibility with strong interparticle interactions-for example, in a quantum degenerate gas-is hardly explored. Here, we realize a dark state in one of the spins of a two-component, resonantly interacting Fermi gas using a Λ system within the D_{2} transitions of ^{6}Li at high magnetic field. The dark state is created in a micrometer-sized region within a one-dimensional channel connecting two superfluid reservoirs.
View Article and Find Full Text PDFThe mammalian Ire1 inhibitor, 4µ8C, exhibits broad anti- activity and in a treatment model of fungal keratitis.
Front Cell Infect Microbiol
November 2024
Department of Microbiology and Immunology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, United States.
Objective: The fungal unfolded protein response consists of a two-component relay in which the ER-bound sensor, IreA, splices and activates the mRNA of the transcription factor, HacA. Previously, we demonstrated that is essential for virulence in a murine model of fungal keratitis (FK), suggesting the pathway could serve as a therapeutic target. Here we investigate the antifungal properties of known inhibitors of the mammalian Ire1 protein both and in a treatment model of FK.
View Article and Find Full Text PDFStructural, Mechanical, and Optical Properties of Laminate-Type Thin Film SWCNT/SiON Composites.
Nanomaterials (Basel)
November 2024
Department of Materials and Environmental Technology, School of Engineering, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn, Estonia.
The development of new encapsulating coatings for flexible solar cells (SCs) can help address the complex problem of the short lifespan of these devices, as well as optimize the technological process of their production. In this study, new laminate-type protective composite coatings were prepared using a silicon oxynitride thin-film matrix obtained by curing the pre-ceramic polymer perhydropolysilazane (PHPS) through two low-temperature methods: (i) thermal annealing at 180 °C and (ii) exposure to UV radiation at wavelengths of 185 and 254 nm. Single-walled carbon nanotubes (SWCNTs) were used as fillers via dry transfer, facilitating their horizontal orientation within the matrix.
View Article and Find Full Text PDFIntegrated deep learning approach for generating cross-polarized images and analyzing skin melanin and hemoglobin distributions.
Biomed Eng Lett
November 2024
AI R&D center, lululab Inc., Seoul, 06054 Republic of Korea.
Cross-polarized images are beneficial for skin pigment analysis due to the enhanced visualization of melanin and hemoglobin regions. However, the required imaging equipment can be bulky and optically complex. Additionally, preparing ground truths for training pigment analysis models is labor-intensive.
View Article and Find Full Text PDFReactive oxygen species-mediated organic long-persistent luminophores light up biomedicine: from two-component separated nano-systems to integrated uni-luminophores.
Chem Soc Rev
November 2024
State Key Laboratory for Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Collaborative Innovation Center for Chemistry and Molecular Medicine, Hunan University, Changsha 410082, China.
Organic luminophores have been widely utilized in cells and fluorescence imaging but face extreme challenges, including a low signal-to-noise ratio (SNR) and even false signals, due to non-negligible background signals derived from real-time excitation lasers. To overcome these challenges, in the last decade, functionalized organic long-persistent luminophores have gained much attention. Such luminophores could not only overcome the biological toxicity of inorganic long-persistent luminescent materials (metabolic toxicity and leakage risk of inorganic heavy metals), but also continue to emit long-persistent luminescence after removing the excitation source, thus effectively improving imaging quality.
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!