How can I make acoustic lens?

More Deblina Biswas's questions See All

Is there any cracked version available TuFLOW software? How to get tutorials of this software?

Is there any cracked version available TuFLOW software? How to get tutorials of this software . As i want to use for modified shallow water equation in urban flood modeling and simulation

06 July 2024 2,741 0 View

There are any alternative software Infoworks or Mike for urban flooding?

please suggest if there are any cracked versions of these software available.

04 July 2024 8,704 2 View

Which solvent and substrate is found to be best suited for deposition of electrodes with MXene ink?

Suppose we have dried MXene slurry (Ti3C2Tx), then the combination of which solvent (in which this dried MXene slurry powder will be mixed, subsequently forming the "ink") and corresponding...

13 June 2024 5,763 0 View

Do you think academia, particularly in the humanities and social sciences, is a continuum of semantic tricks?

Every concept feels like its predecessors stated it more precisely, with successors just adding context. It's rewording, but the understanding stays the same. For example: Structuralism, as...

10 June 2024 3,979 0 View

Can the aims outlined by a translator in the preface be understood as Skopos?

Skopos theory, developed by Hans Vermeer, is a functionalist approach to translation that emphasizes the purpose (Skopos) of a translation as the primary factor guiding the translation process....

02 June 2024 761 3 View

Which institute in India has Intelligent gravimetric analyzer for hydrogen gas storage?

16 May 2024 9,115 0 View

What type of validity is measured for questionnaires by Product Moment Pearson Correlation in SPSS?

Product Moment Pearson Correlation was done in SPSS for the validity test by correlating each item's questionnaire scores with the total score. What type of validity (content/ criterion/ construct...

27 April 2024 4,753 2 View

How can we induce drought stress in rice plants in vitro? What methods measure stress( MPa) accurately?

This question seeks to explore the techniques for inducing drought stress in rice plants in laboratory conditions and methods for accurately assessing the resulting MPa stress levels. It aims to...

17 March 2024 5,840 0 View

Is it possible to not get any lattice fringes even after getting good homogeneously distrubuted NCs at 100nm?

Recently I synthesised FAPbBr3 NCs. I took TEM of that material. At 100 nm it is showing really good homogeneously distributed NCs. But operators were unable to find any lattice fringes in my...

12 March 2024 6,176 6 View

How to create a map of strip cultivation?

I want to create a map of specific cultivation, which is very narrow. It is not possible to identify in satellite image with 15 m resolution and also not possible to digitize on Google Earth Pro....

25 January 2024 2,818 2 View

Problems about acousto-optic coupling in Comsol, how to check whether the moving mesh is correct?

I’m trying to reproduce the acousto-optic coupling simulation in the paper Frequency–angular resolving LiDAR using chip-scale acousto-optic beam steering. LNOI(lithium niobate on insulator) is...

13 August 2024 9,795 0 View

Is it possible to customize the acoustic lens of the ultrasonic transducer in Field II?

We are interested in studying the effects of varying lens curvatures and material properties on the acoustic field. If this is not feasible, could you recommend alternative software that allows...

15 June 2024 6,213 0 View

I want to ask how can I know the mathematical equation running behind acoustic pressure vs time graph in ABAQUS for under water explsoin?

I have modelled an Concrete gravity dam subjected to Under water explosion by Coupled acoustic structural technique. In the result section, I got an acoustic pressure vs time graph. I want to know...

16 May 2024 8,159 0 View

What resources would you recommend for acoustic properties of layered media?

I am doing a literature review on acoustic properties of layered media and I am struggling to find articles, resources etc to add to the review. Does anyone know of any seminal papers in this...

22 April 2024 9,870 4 View

Has anyone ever performed MASW using DAS acoustic sensing approach , as traditionally only geophone sensor are utilized?

Has anyone ever performed MASW using DAS acoustic sensing approach , as traditionally only geophone sensor are utilized. If so the answer is yes, how did they manage to acquire the datasets

29 February 2024 1,137 0 View

What is the Acoustic impedance of GeSeTeSb chalcogenide glasses?

In thermal evaporation process, for the digital thickness monitor to display thickness of films, we need to input, density, acoustic impedance, tooling factor. For standard compositions it is...

03 January 2024 8,784 2 View

How does double-negative acoustic metamaterial(locally resonant) realize negative refraction?

I understand the physical mechanism of either negative mass or negative bulk modulus of acoustic metamaterial, but paper seems to use analogous electromagnetic model or just equations to...

05 December 2023 3,263 1 View

What are the tools to simulate multi-hop underwater acoustic networks?

I would like to know about tools that can support acoustic PHY layer and various ad hoc routing protocols for multi hop communication in underwater networks. What are their important features and...

20 November 2023 4,021 3 View

For the acoustic design of an enclosure, is it enough if the natural frequencies of the enclosure do not match the frequency of the sound generated?

For the acoustic design of an enclosure, is it enough if the natural frequencies of the enclosure do not match the frequency of the sound generated? Such an approach to vibration would be fine. Is...

30 October 2023 7,314 3 View

What is the formula used to calculate typical transmit response and typical receive response of underwater acoustic transducer?

Let us consider that we are using an underwater acoustic transducer Model 630 in an underwater AUV application. Usually in the data sheets, the manufacturer provides the details of operating...

11 October 2023 6,548 1 View

Ronald Kessel

You might first have to specify the acoustic frequency band of interest (ultrasonics? audio band?), and specify the material on both sides of the lens (air? water? human tissue for medical imaging?

Deblina Biswas

Hi Ronald,

Thanks for your reply. The frequency band is in MHz(50 to 100 MHz). I want to design two lenses. One will be in water (both sides) and other will be in air (both sides). Then could you suggest some thing regarding this?

Victor Sluiter

You could take a look at Axicon lenses, these are used for medical and NDT (non-destructive testing) ultrasound, in the 1-20MHz range. They can be made from Rexolite, which has a speed of sound (somewhat) comparable to water.