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| Naji, M. |
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Salmi, Ari
University of Helsinki
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (18/18 displayed)
- 2023Preventing Formation of Metal Dendrites During Electroplating Using External Ultrasonic Actuatorscitations
- 2023Evaluation of bone growth around bioactive glass S53P4 by scanning acoustic microscopy co-registered with optical interferometry and elemental analysiscitations
- 20234D Scanning Acoustic Microscopy
- 2023Ultrasound-based surface sampling in immersion for mass spectrometrycitations
- 2022Coupling Power Ultrasound into Industrial Pipe Walls
- 2022Preventing Formation of Metal Dendrites During Electroplating Using External Ultrasonic Actuatorscitations
- 2022FEM-based time-reversal technique for an ultrasonic cleaning applicationcitations
- 2022CESAM - Coded excitation scanning acoustic microscopecitations
- 2022Identifying Regions-of-Interest and Extracting Gold from PCBs Using MHz HIFUcitations
- 20224D Scanning Acoustic Microscopy
- 2021CESAM - Coded excitation scanning acoustic microscopecitations
- 2021FEM-based time-reversal enhanced ultrasonic cleaningcitations
- 2019Coded Acoustic Microscopy to Study Wood Mechanics and Developmentcitations
- 2019Digital Eyewearcitations
- 2018Detecting Industrial Fouling by Monotonicity during Ultrasonic Cleaningcitations
- 2013Cyclic impulsive compression loading along the radial and tangential wood directions causes localized fatiguecitations
- 2008Crystallization and shear modulus of a forming biopolymer film determined by in situ x-ray diffraction and ultrasound reflection methodscitations
- 2006Measuring in-plane mechanical properties of plate-like samples using phonographic pickupscitations
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document
Digital Eyewear
Abstract
We developed a synthetic aperture focusing technique (SAFT)-based algorithm to extend the working distance of a traditional scanning acoustic microscopy (SAM) transducer at 400 MHz. This algorithm is used to analyze C-scan images of a USAF 1951 resolution sample that is imaged at 50 μm defocus and at focus. The comparison of these images shows that this method can enhance the resolution of defocused images. Imaging artefacts caused by this method are discussed.