Nanoporous silicon nitride-based membranes of controlled pore size, shape and areal density: Fabrication as well as electrophoretic and molecular filtering characterization

• Axel Seidenstücker,
• Stefan Beirle,
• Fabian Enderle,
• Paul Ziemann,
• Othmar Marti and
• Alfred Plettl

Beilstein J. Nanotechnol. 2018, 9, 1390–1398, doi:10.3762/bjnano.9.131

• very low flow resistance of these porous membranes in ionic solutions as expected theoretically. Size-selective separation of protein molecules was demonstrated by real-time fluorescence microscopy. Keywords: ion transport; micellar technique; molecular filtration; nanopores; solid-state membrane

• gas flow and adjustable sample temperature [28][29]. Spherical Au NPs with controlled size and inter-particle distance are fabricated by a well-proven micellar technique [30][31][32][33][34][35]. These particles should also be applicable as a mask in NP-assisted plasma etching of conical pores in

• be presented. The size distribution of the NPs (taken from high resolution SEM top view figures) can be well described by Gaussian distributions. However, occasionally the micellar technique leads to a local aggregation of bigger particles: By employing polymers of high quality and optimized process

Orientation of FePt nanoparticles on top of a-SiO₂/Si(001), MgO(001) and sapphire(0001): effect of thermal treatments and influence of substrate and particle size

• Martin Schilling,
• Paul Ziemann,
• Zaoli Zhang,
• Johannes Biskupek,
• Ute Kaiser and
• Ulf Wiedwald

Beilstein J. Nanotechnol. 2016, 7, 591–604, doi:10.3762/bjnano.7.52

• a much larger area. Such combined information was used here to investigate the orientation of FePt NPs on MgO(001) initiating then further RHEED studies on a-SiO2/Si(001) and sapphire(0001) substrates. Experimental FePt NPs were prepared by a micellar technique, which allows for controlling the

Cyclic photochemical re-growth of gold nanoparticles: Overcoming the mask-erosion limit during reactive ion etching on the nanoscale

• Burcin Özdemir,
• Axel Seidenstücker,
• Alfred Plettl and
• Paul Ziemann

Beilstein J. Nanotechnol. 2013, 4, 886–894, doi:10.3762/bjnano.4.100

• ]. This method was tested here in combination with Au NP fabricated by the micellar technique. It turned out that in this way particles with starting diameters of 12 nm could be enlarged up to 30 nm while keeping the relative width of their size distributions as well as their lateral positions. For