At present, femtosecond laser direct writing (FLDW) with high efficiency, has been a popular method to process all kinds of waveguide in optical functional materials. In this paper, the fabrication of Type-Ⅰ waveguid...
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Lithium niobate(ln)metasurfaces have emerged as a new platform for manipulating electromagnetic ***,we report a fabrication technique for ln nano-grating metasurfaces by combining focused ion beam(FIB)milling with ind...
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Lithium niobate(ln)metasurfaces have emerged as a new platform for manipulating electromagnetic ***,we report a fabrication technique for ln nano-grating metasurfaces by combining focused ion beam(FIB)milling with inductively coupled plasma reactive ion etching(ICP-RIE).Steep sidewalls with angles larger than 80°are *** quasi-bound states in the continuum are observed from our *** measured transmission spectra show good agreement with the numerical simulations,confirming the high quality of the fabricated *** technique can be applied to fabricate the ln metasurfaces with sharp resonances for various applications in optical communications,on-chip photonics,laser physics,sensing,and so on.
The design and fabrication of nanostmctures based on titanium dioxide （TiO2） have attracted much attention because of their low cost, non-toxicity, stability, and potential applications in industry and technology. R...
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The design and fabrication of nanostmctures based on titanium dioxide （TiO2） have attracted much attention because of their low cost, non-toxicity, stability, and potential applications in industry and technology. Recently, one-dimensional （1 D） struc- tured titanates have been used as titanium source to prepare TiO2 nanostructures with various crystalline phases, shapes, sizes, exposed facets, and hierarchical structures. Among the synthetic strategies, hydrothermal method is a facile route to controlla- ble preparation of well-crystalline TiO2 in one step. Herein, we review our recent progress in transferring 1D titanates into TiO2 nanostructures through hydrothermal method, including the transformation mechanism and applications.
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