1. Articles from Jakub Czajkowski

    1-3 of 3
    1. Optical Coherence Tomography as a Characterization Method in Printed Electronics (Thesis)

      Optical Coherence Tomography as a Characterization Method in Printed Electronics (Thesis)

      This Thesis proposes and describes the use of optical coherence tomography (OCT) as a non-contact and non-destructive characterization technique for printed electronics. It is based on and includes the first published results of such an application of the OCT technique. Several different types of structures were studied to evaluate the feasibility of the application. The measurement data was used to define the surface topography, physical dimensions of the specimen features, and to evaluate the ability to characterize multi-layered and multi-material structures. Presented OCT measurements were done for: screen-printed conductive and insulating structures, microfluidic channels, microscopy glass and organic field effect ...

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    2. Optical coherence tomography as an accurate inspection and quality evaluation technique in paper industry

      Optical coherence tomography as an accurate inspection and quality evaluation technique in paper industry
      Optical coherence tomography (OCT), a technique for the noninvasive imaging of turbid media, based on low-coherence interferometry, was originally developed for the imaging of biological tissues. Since the development of the technique, most of its applications have been related to the area of biomedicine. However, from early stages, the vertical resolution of the technique has already been improved to a submicron scale. This enables new possibilities and applications. This article presents the possible applications of OCT in paper industry, where submicron or at least a resolution close to one micron is required. This requirement comes from the layered structure of ...
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    3. Optical coherence tomography as a method of quality inspection for printed electronics products

      Optical coherence tomography as a method of quality inspection for printed electronics products
      Application of time domain, ultra high resolution optical coherence tomography (UHR-OCT) in printed electronics products’ quality inspection is demonstrated. Presented study was done using experimental UHR-OCT device based on a Kerr-lens mode locked Ti:sapphire femtosecond laser, photonic crystal fibre and modified, free-space Michelson interferometer. Possibilities of the technique are demonstrated by analysis of an RF antenna—example of printed electronics products. Measurements were done with submicron axial resolution, offered by UHR-OCT system developed in our laboratory. Such high resolution is necessary due to the thickness of material layers used in printed electronics. In addition to tomography imaging, numerical results ...
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    1-3 of 3
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  2. Topics in the News

    1. (3 articles) University of Oulu
    2. (3 articles) Jakub Czajkowski
    3. (3 articles) Risto A. Myllylä
    4. (3 articles) National Institutes of Health
    5. (2 articles) Erkki Alarousu
    6. (1 articles) University of Erlangen
    7. (1 articles) Peking University
    8. (1 articles) Universidade Federal de São Paulo
    9. (1 articles) Massachusetts Institute of Technology
    10. (1 articles) Joel Ramjist
    11. (1 articles) James G. Fujimoto
    12. (1 articles) Victor X. D. Yang
    13. (1 articles) Heidelberg Engineering
    14. (1 articles) Heidelberg Spectralis
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    Optical coherence tomography as an accurate inspection and quality evaluation technique in paper industry Optical coherence tomography as a method of quality inspection for printed electronics products Optical Coherence Tomography as a Characterization Method in Printed Electronics (Thesis) Three-dimensional detection and quantification of defects in SiC by optical coherence tomography University of Illinois at Chicago Receives NIH Grant for Functional Tomography of Neurovascular Coupling Interactions in Healthy and Diseased Retinas Dyad Medical Receives NIH Grant for Software For OCT Analysis of Vascular Stents Oregon Health and Science University Receives NIH Grant for Application of Ultrahigh-Speed Long-Range Wide-Field OCT in Anterior Eye Diseases Optical coherence tomography and fractional flow reserve guided treatment of woven coronary artery anomaly presenting as acute myocardial infarction Impact of manual correction over automated segmentation of spectral domain optical coherence tomography The 360° circumferential opening of Schlemm's canal in normal individuals detected by enhanced depth imaging optical coherence tomography Real-Time Intraoperative Dynamics of White Cataract- Intraoperative Optical Coherence Tomography Guided Classification & Management Quantitative Optical Coherence Tomography Angiography Biomarkers in a Treat-and-Extend Dosing Regimen in Neovascular Age-Related Macular Degeneration