Thanks to their record high refractive index and giant optical anisotropy,van der Waals(vdW)materials have accelerated the development of nanophotonics.However,traditional high refractive index materials,such as titan...Thanks to their record high refractive index and giant optical anisotropy,van der Waals(vdW)materials have accelerated the development of nanophotonics.However,traditional high refractive index materials,such as titanium dioxide(TiO_(2)),still dominate in the most important visible range.This is due to the current lack of transparent vdW materials across the entire visible spectrum.In this context,we propose that germanium disulfide(GeS_(2))could offer a significant breakthrough.With its high refractive index,negligible losses,and biaxial optical anisotropy across the whole visible range,GeS_(2)has the potential to complement TiO2 and close the application gap of vdW materials in the visible spectrum.The addition of GeS_(2)could have a profound impact on the design of van der Waals nanophotonic circuits for any operation wavelength from ultraviolet to infrared,emphasizing the significance of the potential impact of GeS_(2)on the field of nanophotonics.展开更多
基金K.S.N.acknowledges support from the Ministry of Education,Singapore(Research Centre of Excellence award to the Institute for Functional Intelligent Materials,I-FIM,project No.EDUNC-33-18-279-V12)the National Research Foundation,Singapore under its AI Singapore Programme(AISG Award No:AISG3-RP-2022-028)the Royal Society(UK,grant number RSRP\R\190000).
文摘Thanks to their record high refractive index and giant optical anisotropy,van der Waals(vdW)materials have accelerated the development of nanophotonics.However,traditional high refractive index materials,such as titanium dioxide(TiO_(2)),still dominate in the most important visible range.This is due to the current lack of transparent vdW materials across the entire visible spectrum.In this context,we propose that germanium disulfide(GeS_(2))could offer a significant breakthrough.With its high refractive index,negligible losses,and biaxial optical anisotropy across the whole visible range,GeS_(2)has the potential to complement TiO2 and close the application gap of vdW materials in the visible spectrum.The addition of GeS_(2)could have a profound impact on the design of van der Waals nanophotonic circuits for any operation wavelength from ultraviolet to infrared,emphasizing the significance of the potential impact of GeS_(2)on the field of nanophotonics.
