Risultati di ricerca
In this paper, the reduction of acoustic velocity variation by decreasing phase velocity sensitivity to piezoelectric layer thickness is described for multi-layered SAW devices with excellent frequency stability. We demonstrated how to reduce the acoustic velocity variation of SAW substrates by using FEM analysis and the measurements. In a LiTaO3 (LT)/intermediate layer (IM)/Sapphire (SA) as ...
The loss reduction of a longitudinal-type leaky surface acoustic wave (LLSAW) by loading with a dielectric thin film with a higher velocity than the substrate is proposed. An aluminum nitride (AlN) thin film was adopted as a high-velocity thin film, and the propagation properties of an LLSAW on an X36°Y-LiNbO3 (LN) substrate were investigated. First, the elastic constants c11 and c44 of an ...
maximum velocity of 8857 m/s were obtained at a minimum film thickness ratio of h/λ = 0.11. Such research results provide a predictable theoretical basis for the further application of such substrates in high-velocity SAW devices. 1. Introduction Diamond is a non-piezoelectric material that requires a piezoelectric film to be deposited on
30 nov 2022 · In this work, the velocity field of high-viscosity fluids falling film flow down clamped channels was investigated numerically and experimentally. The results show that the numerical simulation results are consistent with the experimental results, and the characteristics of the velocity field are related to the fluid properties, operating conditions, and structure of the clamped channels.
La superstar Charlie Sheen decolla per una fantastica avventura ad alta quota nei panni di Ditch Brodie, giovane e spericolato istruttore di paracadutismo. La sua vita -già abbastanza movimentata- viene sconvolta quando la misteriosa allieva Chris precipita al primo lancio a causa di un paracadutre difettoso...
16 feb 2023 · Additionally, the effect of HNTD and direct addition method on TE properties of composite films is also compared. Finally, the PEDOT:PSS composite film with 40 wt % SWCNTs by the HNTD method exhibits the maximized power factor (PF) of 501.31 ± 19.23 μW m –1 K –2 with σ of 4717.8 ± 41.51 S cm –1 and S of 32.6 ± 0.13 μV K –1 at room ...
High Velocity. 1976 ... Адрес для писем: partner@film.ru Телефон редакции: 8 (495) 229-62-00
