STED microscopy resolves nanoparticle assemblies
Authors
Discussion
Loading...
Member takes
Implication
Experimental study demonstrates nanoscale imaging of dense nanoparticle assemblies across biological and colloidal systems, indicating STED microscopy breaks diffraction barriers.
Key Points
- Determine whether stimulated emission depletion (STED) microscopy can achieve diffraction-unlimited resolution to resolve densely packed biological and non-biological nanoparticle assemblies.
- Imaged densely packed 40 nm fluorescent beads, cell membrane supramolecular aggregates, and colloidal nanoparticles using far-field STED microscopy in comparison with conventional confocal microscopy.
- Evaluated nanoscale spatial patterns across acquired samples using both raw optical data and linear deconvolution processing.
- STED microscopy resolved individual 40 nm beads and dense colloidal nanoparticles that were indistinguishable and blurred under standard confocal microscopy.
- Both raw and linearly deconvolved STED imaging revealed the previously unresolvable spatial arrangement of supramolecular assemblies within cell membranes.
Cite This Study
Willig et al. (2006) studied this question.