Browsing by Author "Zhou, J."
Now showing 1 - 2 of 2
Results Per Page
Sort Options
Item Open Access Coupling effect between two adjacent chiral structure layers(Optical Society of America, 2010-03-01) Li, Z.; Caglayan, H.; Colak, E.; Zhou, J.; Soukoulis, C. M.; Özbay, EkmelA pair of mutually twisted metallic cross-wires can produce giant optical activity. When this single chiral layer is stacked layer by layer in order to build a thick chiral metamaterial, strong coupling effects are found between the two adjacent chiral layers. We studied these coupling effects numerically and experimentally. The results show that the existing coupling between chiral layers can make the chiral properties of a two-layered chiral metamaterial different from the constituting single chiral layers. It is explained qualitatively that the coupling effects are generated from the coupling of metallic cross-wires belonging to different chiral layers. Our experimental results are in good agreement with the simulation results. ©2010 Optical Society of AmericaItem Open Access Regulating the solvation structure of potassium Ions using a multidentate ether in potassium metal batteries(American Chemical Society, 2022-09-26) Chen, C.; Zhou, J.; Wenbinb, F.; Xueyinga, M.; Chen, S.; Sun, L.; Meng, Y.; Tao, K.; Ülgüt, Burak; Sun, P.; Bielawski, C.; Bielawski, C. W.; Geng, J.Potassium (K) is regarded as an alternative to lithium (Li) for use in contemporary energy storage devices owing to its high abundance and low electrochemical potential. However, because K ions are larger than Li ions, they exhibit different solvation properties that can ultimately affect device performance. Herein, a multidentate ether-based electrolyte is demonstrated to effectively solvate K ions and the solvation structures can be further modulated with cosolvents. The use of the multidentate ether-based electrolyte also suppresses the formation of K dendrites and significantly enhances the cycling stability of K//K symmetric cells (e.g., over 2000 h at 0.25 mA cm-2). © 2022 American Chemical Society. All rights reserved.