Materials Map

Discover the materials research landscape. Find experts, partners, networks.

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The Materials Map is an open tool for improving networking and interdisciplinary exchange within materials research. It enables cross-database search for cooperation and network partners and discovering of the research landscape.

The dashboard provides detailed information about the selected scientist, e.g. publications. The dashboard can be filtered and shows the relationship to co-authors in different diagrams. In addition, a link is provided to find contact information.

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Materials Map under construction

The Materials Map is still under development. In its current state, it is only based on one single data source and, thus, incomplete and contains duplicates. We are working on incorporating new open data sources like ORCID to improve the quality and the timeliness of our data. We will update Materials Map as soon as possible and kindly ask for your patience.

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in Cooperation with on an Cooperation-Score of 37%

Topics

Publications (1/1 displayed)

  • 2019Three Megapixel Ultrasonic Microscope Imaging8citations

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Chart of shared publication
Salmi, A.
1 / 11 shared
Hupa, Leena
1 / 90 shared
Lindfors, N.
1 / 1 shared
Meriläinen, A.
1 / 1 shared
Hæggström, E.
1 / 1 shared
Chart of publication period
2019

Co-Authors (by relevance)

  • Salmi, A.
  • Hupa, Leena
  • Lindfors, N.
  • Meriläinen, A.
  • Hæggström, E.
OrganizationsLocationPeople

document

Three Megapixel Ultrasonic Microscope Imaging

  • Salmi, A.
  • Hupa, Leena
  • Hyvönen, J.
  • Lindfors, N.
  • Meriläinen, A.
  • Hæggström, E.
Abstract

<p>Acoustic microscopy is a modality that utilizes mechanical properties as the imaging contrast. Imaging large areas is desirable for biological samples which often have features that span large areas (&gt;1 mm2). Here we use our custom-made coded excitation scanning acoustic microscope (CESAM) for large area scanning: we visualized two bioactive glass (S53P4) bone substitutes in a rabbit femur, the new bone formation in the bioactive glass, as well as the surrounding bone after implantation. In this study we used 375 MHz central frequency transducer and a 300 to 500 MHz linear chirp with a gaussian envelope. The sample was scanned in 10 different focus layers, each 10 μm apart from each other. These 10 layers were aligned using 2D-cross correlation. In the final image. The reconstruction was done by picking the A-line in focus for each pixel. We discuss the method for large area scanning with focus layer alignment. We show that it reduces the sample flatness requirements. Absolute acoustic impedance values were calculated from the measured data via acoustic impedance calibration [6]. We demonstrated that our device is capable of 250+ mm2area imaging with 10 μm XY-stepping, with sample surface height variation of over 100 μm.</p>

Topics
  • impedance spectroscopy
  • surface
  • glass
  • glass
  • ultrasonic
  • microscopy
  • aligned