Silicon-based filters, resonators and acoustic channels with phononic crystal structures

Abstract

This paper discusses the phenomenon of phononic crystal silicon-based filters, resonators and acoustic channels structured in geometrical periodic arrays created by a single silicon material. Component structured geometrical periodic array refers to a structure of square stubbed rods arranged in repeated arrays on a silicon plate. The study discovered that the band gap of the phononic crystal structure can be modulated under different heights and rotational angles of periodically arrayed square stubbed rods. In addition to band gap modulation, we used the finite element method (FEM) and supercell techniques to analyse the resonance characteristics of defect-containing phononic crystal structures with a larger band gap size design. In addition, the paper also investigated the effects on acoustic channels. Previous studies have already analysed defect-containing resonator and channel phenomenon by the plane-wave expansion method with supercell techniques. However, the FEM can solve numerical issues of extreme difficulty to reach convergence. The results of this study elaborated on the manufacturing feasibility of silicon-based acoustic resonance and filter devices under a complementary metal–oxide–semiconductor synchronization process.

A chemically inert Rashba split interface electronic structure of C60, FeOEP and PTCDA on BiAg2/Ag(111) substrates

“…Scanning tunneling microscopy (STM) experiments in organic spintronic interfaces have already been reported, revealing the self-assembled architectures of different molecules, e.g. on the BiAg 2 surface alloy [3,4]. However, the effect of the adsorption of organic molecules on the electronic structure of the BiAg 2 has not yet been investigated.…”

Isolation of Surface Wave-Induced Vibration Using Periodically Modulated Piles

“…More details on the applications of Bloch's theorem to periodic composites can be found in the works by Gonella and Ruzzene [2008], Huang [2011] and Phani et al [2006].…”

High carrier injection for all-silicon laser

“…(II) Technology for the development of photonic devices [10,11] led to the emergence of waveguides obtained as a periodic crystalline structure. Photonic crystal structures for integrated optics [12] and applications with silicon-on-insulator technology for waveguide photonic were reviewed in reference [13].…”