Yulong Duan

Nov 20, 2024 | mdpi.com | Yulong Duan |Weiyu Han |Peng Guo |Xinhua Wei

1. IntroductionChilies, as common seasonings and delicious dishes, are deeply loved by people from all over the world. As technology continues to advance at a rapid pace, China has firmly established itself as the preeminent producer and consumer of chilies globally. The cultivation area of chilies in China reached an impressive 21,474 km2 in 2019 and continues to exhibit a growth trend [1].

Dec 20, 2023 | mdpi.com | Ken Chen |Yulong Duan |Yi Huang |Wei Hu

All articles published by MDPI are made immediately available worldwide under an open access license. No specialpermission is required to reuse all or part of the article published by MDPI, including figures and tables. Forarticles published under an open access Creative Common CC BY license, any part of the article may be reused withoutpermission provided that the original article is clearly cited. For more information, please refer tohttps://www.mdpi.com/openaccess.

Aug 1, 2023 | onlinelibrary.wiley.com | Yulong Duan |Aiman Rahmanudin |Shangzhi Chen

Abstract A wide range of nanophotonic applications rely on polarization-dependent plasmonic resonances, which usually requires metallic nanostructures that have anisotropic shape. Here, we demonstrate polarization-dependent plasmonic resonances by instead breaking symmetry via material permittivity. We show that molecular alignment of a conducting polymer can lead to a material with polarization-dependent plasma frequency and corresponding in-plane hyperbolic permittivity region.