Spoof acoustic surface waves

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August undefined, 2024

Web13 Sep 2015 · schematically in figure 1(a). The acoustic waves propagating in the structure can be simulated by COMSOL Multiphysics, a finite-element analysis and solver software … Web1 Jun 2024 · An ultrasonic gas sensor based on evanescent coupling of spoof surface acoustic waves between two surface phononic crystals containing trapezoidal grooves on rigid slabs is theoretically and experimentally demonstrated. Sensing properties for carbon dioxide in dry air at 25 °C and 760 Torr are investigated as an example.

Acoustic spoof surface plasmon polaritons for filtering, isolation …

Web27 Aug 2024 · Spoof surface acoustic waves (SSAWs), achieved by the perfect rigid body (PRB) textured with subwavelength structures, can support strongly localized surface … Web26 Mar 2024 · Manipulating acoustic waves beyond the diffraction limit offers alternative possibilities to many applications in wave physics. Here, we show that a gradient-index acoustic metasurface is able to achieve this purpose by modulating airborne sound at subwavelength scales via the local-resonance-controlled spoof surface acoustic waves. dgft team

Guiding spoof surface acoustic waves on a monolayer array of …

Web15 Feb 2024 · Self-collimated propagation and slow-sound effect of spoof acoustic surface waves over a thin solid slab with partially embedded spherical cavities in a square lattice are numerically and experimentally demonstrated. Band structure calculations via the Finite-Element Method reveal that a single spoof surface wave band appears below the air-line ... Web15 Jun 2024 · Abstract Through theoretical analysis and numerical calculation, it is found that the textured surface of a perfect rigid body whose groove height is sufficiently large can support multiple modes of propagating spoof surface acoustic waves (SSAWs). Web1 Sep 2024 · Acoustic waveguide Filter Isolator Sensor Introduction Since their inception [1], spoof surface plasmon polaritons (SSPP) have been widely explored due to their ability to mimic surface plasmon polaritons in terms of subwavelength wave localization and slow-wave properties [2]. dgft tcs

Generation of multiband spoof surface acoustic waves via high …

Rainbow trapping of spoof acoustic surface waves in a defective …

Web20 Mar 2024 · Here, we report an experimental study on topological valley transport of spoof surface acoustic waves (SAWs). Specifically, we realize valley pseudospins and a valley Hall phase transition by tuning the structural size of adjacent grooves. Web26 Dec 2024 · On the other hand, as a counterpart of the SPPs in optical system, spoof acoustic surface wave is also realized on structured rigid plate and induce many analogue … dgft technical supportWeb1 Sep 2024 · Acoustic waveguide Filter Isolator Sensor Introduction Since their inception [1], spoof surface plasmon polaritons (SSPP) have been widely explored due to their ability to … dgft surat

"Web6 Mar 2024 · Here, we show that a sound wave incident inside a solid over a diameter of 110 nm can be squeezed through a resonant meta-atom consisting of a nanowire with a diameter of 5 nm equal to λ/23, where λ is the incident acoustic wavelength, corresponding to a transmission efficiency of 500 or an energy densification of ~14,000. " - Spoof acoustic surface waves

Spoof acoustic surface waves

Spoof-Fluid-Spoof Acoustic Waveguide and its Applications for Sound …

Web6 Sep 2013 · The dispersion property of the spoof surface acoustic waves on the two-dimensional textured rigid plate is analyzed theoretically. By utilizing the broad flat … Web22 Sep 2014 · Because of the intermodal coupling between forward and backward modes on the graded structure, the spoof surface acoustic waves with different frequencies stop …

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Web15 Jun 2024 · Through theoretical analysis and numerical calculation, it is found that the textured surface of a perfect rigid body whose groove height is sufficiently large can … Web22 Feb 2024 · Spoof surface acoustic waves (SSAWs) are a type of evanescent waves propagating over structured (e.g., perforated or grooved) surfaces and exhibiting …

WebIn this paper, we demonstrate that rainbow trapping of spoof acoustic surface waves (SASWs) can be realised by introducing structured defects on a textured closed surface in the subwavelength scale. To analyse the basic mechanism of the trapping of SASWs, we first introduce a defective zigzag groove in a closed surface and illustrate that the SASWs … Web22 Sep 2014 · In this paper, a rigid surface decorated with an array of grooves with graded widths is proposed to get spatial separation of the spoof surface acoustic waves. Because of the intermodal coupling between forward and backward modes on the graded structure, the spoof surface acoustic waves with different frequencies stop propagating ahead and …

Web25 Aug 2024 · Glucose-monitoring sensors are necessary and have been extensively studied to prevent and control health problems caused by diabetes. Spoof localized surface … Web25 Aug 2024 · Glucose-monitoring sensors are necessary and have been extensively studied to prevent and control health problems caused by diabetes. Spoof localized surface plasmon (LSP) resonance sensors have been investigated for chemical sensing and biosensing. A spoof LSP has similar characteristics to an LSP in the microwave or …

Web20 Mar 2024 · Surface acoustic waves Topological insulator Crystal structure ABSTRACT In recent years, topological physics has attracted broad attention in condensed matter systems. Here, we report an experimental study on topological valley transport of spoof surface acoustic waves (SAWs).

WebIn this paper, we demonstrate that rainbow trapping of spoof acoustic surface waves (SASWs) can be realised by introducing structured defects on a textured closed surface in … cibc mellon gss addressWebDue to this fact, “spoof” (or “designer”) surface plasmon polaritons, which could be considered as one special type of metamaterials, have been created below the far-infrared frequency so as to obtain the SPP-like dispersion and propagation properties. cibc mellon trust company canadaWeb24 May 2024 · We designed a type of acoustic waveguide supported by spoof acoustic surface waves. The effective refractive index of acoustic waveguide can be effectively … cibc merchant accountWeb5 May 2024 · Here, we propose an acoustic SOTI in subwavelength scale by another protocol, i.e. gliding metamolecules, and the SOTI is pinned in the nontrivial region without … cibc merchant bankingWeb15 Oct 2013 · To focus the SSAWs launched along x direction, the holes array, with a shape of rectangle as a whole, is fabricated to possess gradient index of refraction along both … dgft steel import monitoring systemWeb5 May 2024 · Soda cans metamaterials in free space are utilized to support the spoof surface acoustic waves. With varying the introduced glided angle, the switching from the bulk to edge and corner states can be achieved accordingly. cibc mayfield and bramaleaWeb21 Mar 2024 · This work engineer topologically valley-projected edge states in the form of spoof surface acoustic waves that confine along the surface of a subwavelength honeycomb lattice composed of 330-mL soda cans to enable promising routes to design integrated acoustic devices based on valley-contrasting physics. 19 PDF cibc mastercard mailing address