Bidirectional acoustic negative refraction based on a pair of metasurfaces with both local and global PT-symmetries
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DOI: 10.1038/s41598-020-67793-x
Abstract: Negative refraction plays an important role in acoustic wave manipulation and imaging. However, conventional systems based on acoustic metamaterials suffer from the limits induced by loss-related and resolution issues. In this work, a parity-time (PT)-symmetric… read more here.
Keywords: pair; negative refraction; acoustic negative; refraction based ... See more keywords
Speckle reduction in ultrasound endoscopy using refraction based elevational angular compounding
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DOI: 10.1038/s41598-021-97717-2
Abstract: Endoscopic ultrasonography (EUS) is a safe, real-time diagnostic and therapeutic tool. Speckle noise, inherent to ultrasonography, degrades the diagnostic precision of EUS. Elevational angular compounding (EAC) can provide real-time speckle noise reduction; however, EAC has… read more here.
Keywords: based elevational; refraction based; angular compounding; speckle reduction ... See more keywords
Refraction-Based Laser Scanning Microcantilever Array System
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DOI: 10.3390/photonics11070592
Abstract: Microcantilever arrays are valuable tools for detecting minute physical and chemical changes. Traditional microcantilever array systems, including our previous work utilizing multiple laser arrays, frequently encounter high complexity, significant costs, and increased noise caused by… read more here.
Keywords: laser scanning; refraction based; microcantilever array; based laser ... See more keywords