Nano-imprinting of highly ordered nano-pillars of lithium niobate (LiNbO3)
نویسندگان
چکیده
Lithium niobate (LiNbO3) is used in applications such as in optoelectronics, surface acoustic wave devices and transducers. In this paper nano-patterning of LiNbO3 wafers at the wafer scale is investigated using a novel low cost and large-area nano-imprinting technique. The formation of nano-scale pillars is presented by nano-imprinting an ordered nickel etch mask by lift-off on a y-cut LiNbO3 wafer. The process lends itself to the development of novel sensors or high temperature nano-scale harvesting structures. Since one potential application for nano-pillars of piezoelectrics is energy harvesting, calculations of relevant figures of merit for LiNbO3 based composites are also presented.
منابع مشابه
New synthesis of nanosized niobium oxides and lithium niobate particles and their characterization by XPS analysis.
This work presents a new synthesis of nano-sized lithium niobate particles by a low temperature three steps procedure. The complete protocol implies a LiH induced reduction of NbCl5 followed by in situ spontaneous oxidation into low valence niobium nano-oxides. These niobium oxides are exposed to air atmosphere leading to pure Nb2O5 formation. Finally, the stable Nb2O5 is converted into lithium...
متن کاملHigh aspect ratio LiNbO3 photonic crystals Toward 3D LiNbO3 micro and nano structures
We report easy to implement techniques for the fabrication of high aspect ratio LiNbO3 photonic crystals. The methods rely on optical grade dicing followed by focused ion beam (FIB) milling. A 2D photonic crystal with an extinction ratio of -14dB is demonstrated. We show how the techniques can be combined for the development of 3D photonic crystals. LiNbO3, ridge waveguides; photonic crystals,
متن کاملDielectric properties of lithium niobate single crystals doped with gadolinium
In this paper dielectric properties of LiNbO3:Gd single crystals at temperatures ~ 290–490 K at narrow frequency range (0.5–10 6 Hz) are presented. The influence of growth conditions was also investigated. The anomalies on dielectric plots depend on the development of the microand nano-domain structure.
متن کاملElastic (stress–strain) halo associated with ion-induced nano-tracks in lithium niobate: role of crystal anisotropy
The elastic strain/stress fields (halo) around a compressed amorphous nano-track (core) caused by a single high-energy ion impact on LiNbO3 are calculated. A method is developed to approximately account for the effects of crystal anisotropy of LiNbO3 (symmetry 3m) on the stress fields for tracks oriented along the crystal axes (X, Y or Z). It only considers the zero-order (axial) harmonic contr...
متن کاملEnhancement of second harmonic signal in nanofabricated cones.
Geometrical effects in optical nanostructures on nanoscale can lead to interesting phenomena such as inhibition of spontaneous emission,1,2 high-reflecting omnidirectional mirrors, structures that exhibit low-loss-waveguiding,3 and light confinement.4,5 Here, we demonstrate a similar concept of exploiting the geometrical effects on nanoscale through precisely fabricating lithium niobate (LiNbO3...
متن کامل