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Ultrasonic sensing and imaging based on whispering gallery mode (WGM) microelectrostatic resonators

A technology of whispering gallery mode and resonator, used in acoustic sensors, sensors, optical sensors, etc.

Pending Publication Date: 2022-07-22
UNIV OF WASHINGTON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This trade-off between resolution and penetration depth presents a challenge in the context of traditional piezoelectric ultrasonic sensors

Method used

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  • Ultrasonic sensing and imaging based on whispering gallery mode (WGM) microelectrostatic resonators
  • Ultrasonic sensing and imaging based on whispering gallery mode (WGM) microelectrostatic resonators
  • Ultrasonic sensing and imaging based on whispering gallery mode (WGM) microelectrostatic resonators

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Embodiment Construction

[0058] In various aspects, a pressure sensor is disclosed that includes an ultra-high quality optical whispering gallery mode (WGM) resonator encapsulated in a low refractive index polymer. In various other aspects, a polymer encapsulated whispering gallery mode (WGM) resonator can be included in a pressure detection system. In various additional aspects, medical imaging systems, including but not limited to ultrasound imaging systems, may include optical whispering gallery mode (WGM) resonators as acoustic sensors. Compared with conventional hydrophones based on piezoelectric materials, optical resonators can exploit the high sensitivity of circulating light to mechanical perturbations caused by incident acoustic waves, thereby achieving higher sensitivity to acoustic signals. At the same time, the submillimeter-scale footprint achievable using WGM microresonators could (1) hold promise for forming compact sensor arrays; and (2) expand the acoustic response bandwidth to highe...

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Abstract

An acoustic sensor based on an optical echo wall mode (WGM) resonator, an imaging system using the acoustic sensor, and a method of detecting ultrasonic waves using the acoustic sensor are disclosed.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS [0002] This application claims priority to US Provisional Application Serial No. 62 / 901,883, filed September 18, 2019, which is incorporated herein by reference in its entirety. [0003] Statement Regarding Federally Funded Research or Development [0004] This invention was made with government support under Army Research Office grants W911NF1710189 and W911NF1210026. The government has certain rights in the invention. technical field [0005] The present disclosure generally relates to systems and methods for performing ultrasound imaging using acoustic transducers including whispering gallery mode resonators. Background technique [0006] Ultrasound technology has attracted increasing attention in various fields, especially in non-invasive measurement, remote sensing and biomedical imaging. Ultrasound imaging is used in a variety of settings to non-invasively image a patient's internal structures by detecting ultrasound ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/12G01N21/17G01N21/41G01N29/14G01N29/24G01N29/22G01J3/02
CPCA61B5/0095A61B8/4272A61B8/4444A61B2562/0238A61B2562/0204A61B2562/12G01H9/004G01N29/2418G01N29/0654A61B8/565G02B6/29341
Inventor L·杨G·赵X·姜Y·李
Owner UNIV OF WASHINGTON