Water-assisted purification during electron beam-induced deposition of platinum and gold

• Cristiano Glessi,
• Fabian A. Polman and
• Cornelis W. Hagen

Beilstein J. Nanotechnol. 2024, 15, 884–896, doi:10.3762/bjnano.15.73

• each experiment at 5·10−5 mbar. A GIS simulation tool [55] was used to estimate the flux of the two precursors when purification was achieved. An injection flux of water 33 times higher than that of platinum precursor was calculated, which increases to 430 in the deposition area because of the

• presented in atom % for 1a (colour images generated by the Aztec software; 1% rounding error on the C atom % map). The bottom image is a secondary electron SEM image of the deposit. SEM image of deposits 1b–1f obtained by co-injecting platinum precursor and water. All images are taken at the same brightness

• beam-induced deposition (FEBID). It was recently achieved for gold deposits by the co-injection of a water precursor and the gold precursor Au(tfac)Me2. In this work results are reported, using the same approach, on a different gold precursor, Au(acac)Me2, as well as the frequently used platinum

Atomic layer deposition for efficient oxygen evolution reaction at Pt/Ir catalyst layers

• Stefanie Schlicht,
• Korcan Percin,
• Stefanie Kriescher,
• André Hofer,
• Claudia Weidlich,
• Matthias Wessling and
• Julien Bachmann

Beilstein J. Nanotechnol. 2020, 11, 952–959, doi:10.3762/bjnano.11.79

• ethylcyclopentadienyl-1,3-cyclohexadiene-iridium(I) ((EtCp)Ir(CHD)), trimethyl(methylcyclopentadienyl)platinum (MeCpPtMe3) and ozone as precursors. Ozone was produced from dioxygen in an ozone generator model BMT 803N. The deposition was carried out at 220 °C and the iridium and platinum precursor bottles were

Charged particle single nanometre manufacturing

• Philip D. Prewett,
• Cornelis W. Hagen,
• Claudia Lenk,
• Steve Lenk,
• Marcus Kaestner,
• Tzvetan Ivanov,
• Ahmad Ahmad,
• Ivo W. Rangelow,
• Xiaoqing Shi,
• Stuart A. Boden,
• Alex P. G. Robinson,
• Dongxu Yang,
• Sangeetha Hari,
• Marijke Scotuzzi and
• Ejaz Huq

Beilstein J. Nanotechnol. 2018, 9, 2855–2882, doi:10.3762/bjnano.9.266

• rates of the substrate materials to be made and hence the selectivity. A set of EBID masks with structures between 8 and 20 nm were fabricated using the platinum precursor MeCpPtMe3 on a silicon substrate with a 20 kV, 40 pA beam providing a dose of 4000 C·m−2 in ultrahigh-resolution (UHR) mode. The

Pattern generation for direct-write three-dimensional nanoscale structures via focused electron beam induced deposition

• Lukas Keller and
• Michael Huth

Beilstein J. Nanotechnol. 2018, 9, 2581–2598, doi:10.3762/bjnano.9.240

• , the pattern files for B and D with the bpPAA. Besides the fact that both A and C do not comply as nicely to the target geometry as B and D, B and D are also taller due to more efficient use of precursor. All four structures were deposited in high-resolution mode on SiO2 employing the platinum

• precursor. 3.3 Height correction In Figure 10 we demonstrate the positive influence of the height correction. After deposit A was written without height correction, the heights of some corner vertices were measured from a SEM image and compared to the heights defined in the geometry file geof (compare with

Electron-driven and thermal chemistry during water-assisted purification of platinum nanomaterials generated by electron beam induced deposition

• Ziyan Warneke,
• Markus Rohdenburg,
• Jonas Warneke,
• Janina Kopyra and
• Petra Swiderek

Beilstein J. Nanotechnol. 2018, 9, 77–90, doi:10.3762/bjnano.9.10

• deposition; nanostructure purification; platinum precursor; Introduction Focused electron beam induced deposition (FEBID) produces solid nanomaterials with size down to the sub-10 nm regime by decomposing precursor molecules adsorbed on a surface under a tightly focused high-energy electron beam [1

Direct writing of gold nanostructures with an electron beam: On the way to pure nanostructures by combining optimized deposition with oxygen-plasma treatment

• Domagoj Belić,
• Mostafa M. Shawrav,
• Emmerich Bertagnolli and
• Heinz D. Wanzenboeck

Beilstein J. Nanotechnol. 2017, 8, 2530–2543, doi:10.3762/bjnano.8.253

• different surface mechanisms prevented the direct application of the methods used for Pt purification to Au purification. These differences between the platinum precursor MeCpPtMe3 and the acetylacetonate-based gold precursors Me2-Au-acac, Me2-Au-tfac, and Me2-Au-hfac become evident by the fact that atomic

Platinum nanoparticles from size adjusted functional colloidal particles generated by a seeded emulsion polymerization process

• Nicolas Vogel,
• Ulrich Ziener,
• Achim Manzke,
• Alfred Plettl,
• Paul Ziemann,
• Johannes Biskupek,
• Clemens K. Weiss and
• Katharina Landfester

Beilstein J. Nanotechnol. 2011, 2, 459–472, doi:10.3762/bjnano.2.50

• investigated in detail at the time [11][12]. In order to determine the parameters influencing the saturation state, we varied the type of surfactant, the amount of precursor loading and the size of the colloids. The results are discussed in the subsequent sections. 2.1.1 Platinum precursor and surfactant Based

• responsible for saturation. However, currently one cannot exclude further factors contributing to the appearance of the saturated state. 2.1.2 Amount of platinum precursor In order to analyze the effect of Pt-precursor concentration within the colloids on the saturation diameter after oxygen plasma exposure