Scientific Highlights
The highlights of my scientific work can be illustrated by the following publication:
- The dynamic structural change, in beta-alumina ceramics, explaining the collapse of their
conducting planes, was revealed in high resolution electron microscopy images.
Blocking Defects in beta-alumina observed by High Resolution Electron Microscopy.
J.-O. Bovin, Nature, 273 (1978) 136.
- A new ionic conductor NaMgF3 was discovered and its importance for the understanding
of ion transport in the lower mantel of the earth was published while I was a research
associate at Arizona State University.
Solid Electrolyte Behaviour of NaMgF3: Geophysical Implications.
M. O'Keeffe and J.O. Bovin, Science 206 (1979) 599.
- The oxyborate mineral, Takeuchiite, was discovered using electron microscopy and for
the first time an unknown structure was determined using structure images and the
structure building principle, chemical twinning.
Electron Microscopy of Oxyborates: III. On the Structure of Takeuchiite.
J.-O. Bovin and M. O'Keeffe, Acta Crystallogr. A37 (1981) 42.
- Small metal particles have clouds of atoms outside some surfaces and we discovered this
using videorate image processing and one of my pictures was presented on the cover of
Nature.
Imaging of Atomic Clouds Outside the Surfaces of Gold Crystals by Electron Microscopy.
J.-O. Bovin, R. Wallenberg and D.J. Smith, Nature 317 No. 6032 (1985) 47.
- Catalytically active metals, like Pt, show structure dynamics and clouds outside some
surfaces.
Atomic Resolution Study of Structural Rearrangements in Small Platinum Crystals.
J.-O. Bovin, L.R. Wallenberg, A.K. Petford-Long and D.J. Smith, Ultramicroscopy, 20 (1986) 71.
- Total structure rearrangements of small metal particles was discovered and
videorecorded for the first time in the world by our group 1984 and presented at a
conference in Berlin. All small metal particles investigated so far show this kind of
behaviour and it can be illustrated with our paper in Science.
Dynamic Atomic-Level Rearrangements in Small Gold Particles.
D.J. Smith, A.K. Petford-Long, L.R. Wallenberg and J.-O. Bovin, Science 233 (1986) 872.
- Small ruthenium crystals (about 2.5 nm) can in a few seconds show four different
structures also including defects. The different structures were recorded at atomic
resolution on videotape.
Real-Time Atomic Resolution Imaging of Polymorphic Changes in Ruthenium Clusters.
J.-O. Malm, J.-O. Bovin, A.K. Petford-Long, D.J. Smith, G. Schmid and N. Klein, Angew. Chem. 100 (1988) 580.
- HREM studies on superconducting phases and related ones has been performed since
1987. We also found that
YBa2Cu3O6+x
was an oxidation catalyst and patented its applications.
Oxidation Catalysis on YBa2Cu3O6+x.
S. Hansen, J. Otamiri, J.-O. Bovin and A. Andersson, Nature, 334 (1988) 143.
- A new EDX method for the analysis of nano- sized thin layers on surfaces was used.
Ligand Stabilized Bimetallic Colloids Identified by HREM and EDX.
G. Schmid, A. Lehnert, J.-O. Malm, J.-O. Bovin, Angew. Chem. Int. Ed. Engl. 30 (1991) 874.
- Ligand stabilized bimetallic colloids, very important for saving precious metals for
catalysts, was studied.
Ligand-Stabilized Giant Palladium Clusters: Promising Candidates in Heterogeneous Catalysis.
G. Schmid, M. Harms, J.-O. Malm, J.-O. Bovin, J. van Ruiterbeck, H.W. Zandbergen and W. T. Fu,
J. Amer. Chem. Soc. 115 (1993) 2046.
- The determination of the surface and internal structure of zeolites is important fore the understanding of the many applications of this group of compounds.
Observation on the role of crown ethertemplates in the formation of hexagonal and cubic polymorphs of zeolite Y.
T. Ohsuna, O. Terasaki, J.-O. Bovin, V. Alfredsson, D. Watanabe, S.W. Carr and M.W. Anderson, Proc. R. Soc. Lond. A 452 (1996) 715.
- Cryo-TEM studies of inorganic nano-sized crystal was performed for the first time.
Cryo-TEM Snapshots of Proteins Adsorbed on Small Zeolite Crystals.
D. Klint, G. Karlsson and J.-O. Bovin, Angew. Chem. Int. Ed. 1999, 38, No. 17, 2560
- EFTEM maping of frozen solution was perfomed for the first time.
A New View on Chemistry of Solids in Solution - Cryo-EFTEM Imaging of Aggregating Palladium Colloids in Vitreous Ice.
J.-O. Bovin, T. Huber, O. Balmes, J.-O. Malm and G. Karlsson, Chem. Eur. J. 2000, 6, No. 1, 129