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We present the design of a plasmonic modulator based on hybrid orthogonal silver junctions using vanadium dioxide as the modulating material on a silicon-on-insulator. The modulator has an ultra-compact footprint of 1.8 μm × 1 μm with a 100 nm × 100 nm modulating section based on the hybrid orthogonal geometry. The modulator takes advantage of the large change in the refractive index of vanadium dioxide during its phase transition to achieve a high modulation depth of 46.89 dB/μm. The simulated device has potential applications in the development of next generation high frequency photonic modulators for optical communications which require nanometer scale footprints, large modulation depth and small insertion losses.
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http://dx.doi.org/10.3390/nano11102507 | DOI Listing |
ACS Nano
September 2025
Department of Chemical Physics, Key Laboratory of Precision and Intelligent Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China.
The coupling between transition metal dichalcogenides (TMDCs) and SrTiO has recently emerged as a fertile platform for discovering interfacial phenomena, where particle interactions, lattice coupling, and dielectric screening give rise to interesting physical effects. These hybrid systems hold significant promise for two-dimensional (2D) electronics, ferroelectric state control, and metastable phase engineering. However, effective modulation of the interfacial electronic structure remains a critical challenge.
View Article and Find Full Text PDFPlant Cell Environ
September 2025
National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest China, Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry of the Ministry of Education, College of Life Sciences, Shaanxi Normal University, Xi'an, China.
Drought stress dynamically reprograms specialised metabolism in medicinal plants. However, the transcriptional regulatory modules governing stress-adaptive metabolite synthesis remain poorly characterised. Here, we identified SbMYB8 as a drought-responsive transcription factor showing nuclear localisation and dose-dependent induction under drought in Scutellaria baicalensis.
View Article and Find Full Text PDFPhys Chem Chem Phys
September 2025
Department of Chemistry, Graduate School of Science and Technology, Kwansei Gakuin University, 1 Gakuen Uegahara, Sanda, Hyogo 669-1330, Japan.
Hybrid systems (HSs) of quantum dots (QDs) and molecular photoswitches exhibit luminescence switching of QDs based on energy transfer and have garnered attention for their potential applications in sensors and optical memories. In HSs, the chemical composition, such as the number of attached ligands, is inherently distributed, posing challenges for extracting the energy transfer process from the QDs to a single acceptor molecule. The stochastic model, assuming a Poisson distribution for the number of acceptors, proves to be an effective approach for extracting the process.
View Article and Find Full Text PDFPublic Health Nutr
September 2025
Nutrition and Metabolism Branch, International Agency for Research on Cancer, Lyon, France.
Objective: While associations of ultra-processed food (UPF) consumption with adverse health outcomes are accruing, its environmental and food biodiversity impacts remain underexplored. This study examines associations between UPF consumption and dietary greenhouse gas emissions (GHGe), land use, and food biodiversity.
Design: Prospective cohort study.
Nat Nanotechnol
September 2025
School of Engineering, The University of Tokyo, Tokyo, Japan.
Active metasurfaces incorporating electro-optic materials enable high-speed free-space optical modulators that show great promise for a wide range of applications, including optical communication, sensing and computing. However, the limited light-matter interaction lengths in metasurfaces typically require high driving voltages exceeding tens of volts to achieve satisfactory modulation. Here we present low-voltage, high-speed free-space optical modulators based on silicon-organic-hybrid metasurfaces with dimerized-grating-based nanostructures.
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