High Resolution Biomedical Imaging Using Ultrasonic Metamaterials
Lead Research Organisation:
University of Leeds
Department Name: Electronic and Electrical Engineering
Abstract
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Publications
Adams C
(2017)
An Adaptive Array Excitation Scheme for the Unidirectional Enhancement of Guided Waves.
in IEEE transactions on ultrasonics, ferroelectrics, and frequency control
Adams C
(2018)
HIFU Drive System Miniaturization Using Harmonic Reduced Pulsewidth Modulation.
in IEEE transactions on ultrasonics, ferroelectrics, and frequency control
Askari M
(2020)
Additive manufacturing of metamaterials: A review
in Additive Manufacturing
Askari M
(2020)
An ultrasonic metallic Fabry-Pérot metamaterial for use in water
in Additive Manufacturing
Astolfi L
(2021)
Holey-structured tungsten metamaterials for broadband ultrasonic sub-wavelength imaging in water.
in The Journal of the Acoustical Society of America
Astolfi L
(2022)
Optimised polymer trapped-air lenses for ultrasound focusing in water exploiting Fabry-Pérot resonance.
in Ultrasonics
Harput S
(2017)
Generation of Ultrasound Pulses in Water Using Granular Chains with a Finite Matching Layer
in Physical Review Applied
Hutchins DA
(2016)
Ultrasonic propagation in finite-length granular chains.
in Ultrasonics
Nie L
(2019)
High-Frame-Rate Contrast-Enhanced Echocardiography Using Diverging Waves: 2-D Motion Estimation and Compensation.
in IEEE transactions on ultrasonics, ferroelectrics, and frequency control
Nie L
(2018)
Combining Acoustic Trapping With Plane Wave Imaging for Localized Microbubble Accumulation in Large Vessels.
in IEEE transactions on ultrasonics, ferroelectrics, and frequency control
Nie L
(2021)
A Metallic Additively Manufactured Metamaterial for Enhanced Monitoring of Acoustic Cavitation-Based Therapeutic Ultrasound
in Advanced Engineering Materials
| Description | Acoustic metamaterials constructed from conventional base materials can exhibit exotic phenomena not commonly found in nature, achieved by combining geometrical and resonance effects. However, the use of polymer-based metamaterials that could operate in water is difficult, due to the low acoustic impedance mismatch between water and polymers. In this project we have developed the concept of "trapped air" metamaterial, fabricated via vat photopolymerization, which makes ultrasonic sub-wavelength imaging in water using polymeric metamaterials highly effective. This concept is demonstrated for a holey-structured acoustic metamaterial in water at 200-300 kHz, via both finite element modelling and experimental measurements, but it can be extended to other types of metamaterials. The new approach, which outperforms the usual designs of these structures, indicates a way forward for exploiting additive-manufacturing for realising polymer-based acoustic metamaterials in water at ultrasonic frequencies for sub-wavelength imaging. |
| Exploitation Route | Experimental validation is still progressing but we have demonstrated the use of rapid prototype manufacture processes in the design of metamaterials for sub-wavelength imaging. Imaging with metamaterials in water is problematic and this research presents a solution applicable to biomedical imaging. |
| Sectors | Aerospace, Defence and Marine,Electronics,Energy,Healthcare,Manufacturing, including Industrial Biotechology,Pharmaceuticals and Medical Biotechnology |
| Description | Responsive Mode |
| Amount | £830,216 (GBP) |
| Funding ID | EP/N034813/1 |
| Organisation | Engineering and Physical Sciences Research Council (EPSRC) |
| Sector | Public |
| Country | United Kingdom |
| Start | 12/2016 |
| End | 11/2019 |
| Description | High Resolution Biomedical Imaging Using Ultrasonic Metamaterials |
| Organisation | University of Nottingham |
| Country | United Kingdom |
| Sector | Academic/University |
| PI Contribution | Leeds provide experimental and simulation expertise. |
| Collaborator Contribution | Our partners at Nottingham provide materials, materials manufacture and rapid prototyping of metamaterials for acoustic characterization by Leeds and Warwick |
| Impact | Publications are reported elsewhere in this award. |
| Start Year | 2016 |