Micron-scale imaging using bulk ultrasonics
Abstract An extraordinary resolution down to 50 microns is demonstrated for the first time for bulk ultrasonics, using novel micro-fabricated metamaterial lenses. The development and performance of the silicon-based Fabry–Perot type metalenses with an array of 10 micrometre square holes are discusse...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-10-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-024-72634-2 |
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| author | Loheshwaran Chandran Mohamed Subair Syed Akbar Ali Bradley Bobbs Chandan Dutta Joseph JD Enakshi Bhattacharya Prabhu Rajagopal |
| author_facet | Loheshwaran Chandran Mohamed Subair Syed Akbar Ali Bradley Bobbs Chandan Dutta Joseph JD Enakshi Bhattacharya Prabhu Rajagopal |
| author_sort | Loheshwaran Chandran |
| collection | DOAJ |
| description | Abstract An extraordinary resolution down to 50 microns is demonstrated for the first time for bulk ultrasonics, using novel micro-fabricated metamaterial lenses. The development and performance of the silicon-based Fabry–Perot type metalenses with an array of 10 micrometre square holes are discussed. Challenges in wave reception are addressed by a custom-developed micro-focal laser with a sub-micron spot size and an innovative experimental set-up together with physics based signal processing. The results provide a pathway for material diagnostics at greater depths with high resolution using micro-metalens-enhanced ultrasound as an alternative to expensive and radiation prone electromagnetic techniques. |
| format | Article |
| id | doaj-art-fb503eb803cd4f8d946fdcc03703fae2 |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2024-10-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-fb503eb803cd4f8d946fdcc03703fae22025-01-19T12:24:55ZengNature PortfolioScientific Reports2045-23222024-10-0114112010.1038/s41598-024-72634-2Micron-scale imaging using bulk ultrasonicsLoheshwaran Chandran0Mohamed Subair Syed Akbar Ali1Bradley Bobbs2Chandan Dutta3Joseph JD4Enakshi Bhattacharya5Prabhu Rajagopal6Centre for Nondestructive Evaluation (CNDE), Indian Institute of Technology MadrasCentre for Nondestructive Evaluation (CNDE), Indian Institute of Technology MadrasIntelligent Optical Systems, IncCentre for Nondestructive Evaluation (CNDE), Indian Institute of Technology MadrasCentre for NEMS and Nanophotonics (CNNP), Indian Institute of Technology MadrasCentre for NEMS and Nanophotonics (CNNP), Indian Institute of Technology MadrasCentre for Nondestructive Evaluation (CNDE), Indian Institute of Technology MadrasAbstract An extraordinary resolution down to 50 microns is demonstrated for the first time for bulk ultrasonics, using novel micro-fabricated metamaterial lenses. The development and performance of the silicon-based Fabry–Perot type metalenses with an array of 10 micrometre square holes are discussed. Challenges in wave reception are addressed by a custom-developed micro-focal laser with a sub-micron spot size and an innovative experimental set-up together with physics based signal processing. The results provide a pathway for material diagnostics at greater depths with high resolution using micro-metalens-enhanced ultrasound as an alternative to expensive and radiation prone electromagnetic techniques.https://doi.org/10.1038/s41598-024-72634-2Sub-wavelength imagingMicro metamaterialPeriodic holey structuresRayleigh diffraction limitationAcoustic microscopy |
| spellingShingle | Loheshwaran Chandran Mohamed Subair Syed Akbar Ali Bradley Bobbs Chandan Dutta Joseph JD Enakshi Bhattacharya Prabhu Rajagopal Micron-scale imaging using bulk ultrasonics Scientific Reports Sub-wavelength imaging Micro metamaterial Periodic holey structures Rayleigh diffraction limitation Acoustic microscopy |
| title | Micron-scale imaging using bulk ultrasonics |
| title_full | Micron-scale imaging using bulk ultrasonics |
| title_fullStr | Micron-scale imaging using bulk ultrasonics |
| title_full_unstemmed | Micron-scale imaging using bulk ultrasonics |
| title_short | Micron-scale imaging using bulk ultrasonics |
| title_sort | micron scale imaging using bulk ultrasonics |
| topic | Sub-wavelength imaging Micro metamaterial Periodic holey structures Rayleigh diffraction limitation Acoustic microscopy |
| url | https://doi.org/10.1038/s41598-024-72634-2 |
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