Evaluation of bone growth around bioactive glass S53P4 by scanning acoustic microscopy co-registered with optical interferometry and elemental analysis

Autor: Axi Holmström, Antti Meriläinen, Jere Hyvönen, Anton Nolvi, Tuomo Ylitalo, Kari Steffen, Robert Björkenheim, Gustav Strömberg, Heikki J. Nieminen, Ivan Kassamakov, Jukka Pajarinen, Leena Hupa, Ari Salmi, Edward Hæggström, Nina C. Lindfors

Publikováno v: Scientific Reports, Vol 13, Iss 1, Pp 1-11 (2023)

Abstract Bioactive glass (BAG) is a bone substitute that can be used in orthopaedic surgery. Following implantation, the BAG is expected to be replaced by bone via bone growth and gradual degradation of the BAG. However, the hydroxyapatite mineral fo

Externí odkaz: https://doaj.org/article/64fe139096bb4727804cb7be883ae04d

Label-free 3D super-resolution nanoscope

Autor: Ivan Kassamakov, Timo Arstila, Pekka Raatikainen, Anton Nolvi, Miikka Järvinen, Tuomo Ylitalo, Kristian Ahlers, Göran Maconi, Tuomas Vainikka, Edward Hæggström, Ilona Ninca

Publikováno v: Optical Measurement Systems for Industrial Inspection XI.

Scanning White Light Interferometry is a non-contacting method for three-dimensional (3D) surface characterization that provides Angstrom level vertical resolution and diffraction limited lateral resolution. This lateral resolution can be improved by

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8e521f5f3a238fe1b34165b83050ad98
https://doi.org/10.1117/12.2526111

3D morphometric analysis of calcified cartilage properties using micro-computed tomography

Autor: I. Kestilä, S. Kauppinen, Jérôme Thevenot, I. Hadjab, Simo Saarakkala, Marianne Haapea, Mikko A. J. Finnilä, Heikki J. Nieminen, Kenneth P.H. Pritzker, E. Quenneville, Michael D. Buschmann, Lassi Rieppo, H.K. Gahunia, Sakari S. Karhula, M. Garon, Tuomo Ylitalo

Objective: Our aim is to establish methods for quantifying morphometric properties of calcified cartilage (CC) from micro-computed tomography (mu CT). Furthermore, we evaluated the feasibility of these methods in investigating relationships between o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d9ad266aaefa5168812a46eb785331f6
https://aaltodoc.aalto.fi/handle/123456789/36723

3D histopathological grading of osteochondral tissue using contrast-enhanced micro-computed tomography

Autor: Sakari S. Karhula, Petri Lehenkari, H.K. Gahunia, Heikki J. Nieminen, Tuomo Ylitalo, Edward Hæggström, Lassi Rieppo, Simo Saarakkala, Kenneth P.H. Pritzker

Publikováno v: Osteoarthritis and Cartilage

Objective: Histopathological grading of osteochondral (OC) tissue is widely used in osteoarthritis (OA) research, and it is relatively common in post-surgery in vitro diagnostics. However, relying on thin tissue section, this approach includes a numb

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::390a68da9e05dca434e4da72152eb7f3
http://hdl.handle.net/10138/231637

Mechanical assessment of suspended ALD thin films by bulge and shaft loading techniques

Autor: Lauri Kilpi, J. Heino, Edward Hæggström, Maria Berdova, Jari Koskinen, Tuomo Ylitalo, Helena Ronkainen, Ivan Kassamakov, Sami Franssila, Pekka T. Törmä

Publikováno v: Berdova, M, Ylitalo, T, Kassamakov, I, Heino, J, Törmä, P T, Kilpi, L, Ronkainen, H, Koskinen, J, Hæggström, E & Franssila, S 2014, ' Mechanical assessment of suspended ALD thin films by bulge and shaft-loading techniques ', Acta Materialia, vol. 66, pp. 370-377 . https://doi.org/10.1016/j.actamat.2013.11.024

We assessed mechanical properties of free-standing atomic-layer-deposited (ALD) Al2O3 thin films, mixed oxide (AlxTiyOz) films and Al2O3/TiO2 nanolaminates (75 and 200 nm). Using bulge and microelectromechanical system shaft-loading techniques, we ev

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::018aaacf75ed697ff185e1fb723f831a
https://doi.org/10.1016/j.actamat.2013.11.024