Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Ulf Hakanson"'
Publikováno v:
Nano Letters. 4:2309-2314
We demonstrate a tomographic method for determining the degree of ellipticity and the orientation of a gold nanoparticle. To do this, we attach a single nanoparticle to the end of a sharp glass fiber tip and record its plasmon spectra for different i
Autor:
Philip Measor, Ulf Hakanson, Dongliang Yin, Vahid Sandoghdar, Evan J. Lunt, Holger Schmidt, Aaron R. Hawkins
Publikováno v:
SPIE Proceedings.
The combination of integrated optics and microfluidics in planar optofluidic devices carries the potential for novel compact and ultra-sensitive detection in liquid and gaseous media. Single molecule fluorescence detection sensitivity in planar beam
Publikováno v:
Physical Review Letters. 97
We investigate the coupling of a single molecule to a single spherical gold nanoparticle acting as a nanoantenna. Using scanning probe technology, we position the particle in front of the molecule with nanometer accuracy and measure a strong enhancem
Autor:
Sven Burger, Ulf Hakanson, Thomas Kalkbrenner, Carsten Henkel, Vahid Sandoghdar, Achim Schädle
Publikováno v:
Physical Review Letters. 95
The existing optical microscopes form an image by collecting photons emitted from an object. Here we report on the experimental realization of microscopy without the need for direct optical communication with the sample. To achieve this, we have scan
Autor:
Gisela Lundberg, Anders H Rosengren, Ulf Håkanson, Henrik Stewénius, Yuesheng Jin, Ylva Stewénius, Sven Påhlman, David Gisselsson
Publikováno v:
PLoS ONE, Vol 3, Iss 8, p e3099 (2008)
Amplification of the oncogene MYCN in double minutes (DMs) is a common finding in neuroblastoma (NB). Because DMs lack centromeric sequences it has been unclear how NB cells retain and amplify extrachromosomal MYCN copies during tumour development.We
Externí odkaz:
https://doaj.org/article/322afe80fb0e4119a5492b802357611d
Autor:
David Gisselsson, Ulf Håkanson, Patrick Stoller, Dominik Marti, Yuesheng Jin, Anders H Rosengren, Ylva Stewénius, Fredrik Kahl, Ioannis Panagopoulos
Publikováno v:
PLoS ONE, Vol 3, Iss 4, p e1871 (2008)
BackgroundNormal cell division is coordinated by a bipolar mitotic spindle, ensuring symmetrical segregation of chromosomes. Cancer cells, however, occasionally divide into three or more directions. Such multipolar mitoses have been proposed to gener
Externí odkaz:
https://doaj.org/article/6d3f95c8a6834a7a8dbc1d56f9a0d2eb
Autor:
Vahid Sandoghdar, Enrico Klotzsch, Volker Jacobsen, Alois Renn, Ulf Håkanson, Mario Agio, Ilja Gerhardt, Johannes Seelig, Gert Wrigge
Publikováno v:
CHIMIA, Vol 60, Iss 11 (2006)
We discuss an interferometric method for the optical detection of very small nonfluorescent nanoparticles. In particular, we show that single gold nanoparticles with a diameter as small as 5 nm can be detected. We discuss the potential of such tiny p
Externí odkaz:
https://doaj.org/article/1c4cb7a826444de6806623afe872e88b