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Self-assembly processes of 2D Au(I)-S(CH)COOH lamellae.
Nanoscale
January 2025
State Key Lab of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, 130012, P. R. China.
Solving the assembled structure of Au(I)-thiolate linear coordination polymers has been a challenging task as they generally lack good crystallinity. This has prevented the elucidation of their assembly processes at the molecular level. In this paper, selected area electron diffraction (SAED) patterns of two-dimensional (2D) Au(I)-S(CH)COOH (Au(I)-MPA) lamellae are obtained by applying cryogenic transmission electron microscopy.
View Article and Find Full Text PDFNano-Perforated Silicon Membrane with Monolithically Integrated Buried Cavity.
Micromachines (Basel)
January 2025
DTU Nanolab, National Centre for Nano Fabrication and Characterization, Technical University of Denmark, Ørsteds Plads B347, 2800 Kongens Lyngby, Denmark.
A wafer-scale process for fabricating monolithically suspended nano-perforated membranes (NPMs) with integrated support structures into silicon is developed. Existing fabrication methods are suitable for many desired geometries, but face challenges related to mechanical robustness and fabrication complexity. We demonstrate a process that utilizes the cyclic deposit, remove, etch, and multi-step (DREM) process for directional etching of high-aspect-ratio (HAR) 300 nm in diameter nano-pores of 700 nm pitch.
View Article and Find Full Text PDFThe Photoinduced Response of Antimony from Femtoseconds to Minutes.
Adv Mater
January 2025
Institute of Materials Physics, University of Münster, Wilhelm-Klemm-Str. 10, 48149, Münster, Germany.
As a phase change material (PCM), antimony exhibits a set of desirable properties that make it an interesting candidate for photonic memory applications. These include a large optical contrast between crystalline and amorphous solid states over a wide wavelength range. Switching between the states is possible on nanosecond timescales by applying short heating pulses.
View Article and Find Full Text PDFPurification of arsenic-contaminated drinking water by Fe-Al-CO layered double hydroxide derived from secondary aluminum dross: adsorption and stabilization studies.
Sci Rep
January 2025
Research Laboratory of Inorganic Chemical Process Technologies, School of Chemical Engineering, University of Science and Technology, Narmak, Tehran, 1684613114, Iran.
This study aims to utilize secondary aluminum dross waste to synthesize Fe-Al layered double hydroxide (Fe-Al LDH) for efficient adsorption of arsenic from drinking water. The synthesis process was based on a multi-step hydrometallurgical approach, in which the aluminum content in the waste was first converted to sodium aluminate. This was followed by the transformation into Fe-Al LDH through a series of processes, including gelation, sol formation, simultaneous precipitation, and aging.
View Article and Find Full Text PDFAn efficient multi-gram access in a two-step synthesis to soluble, nine-atomic, silylated silicon clusters.
Nat Commun
December 2024
Department of Chemistry, TUM School of Natural Sciences, Technical University of Munich (TUM), Lichtenbergstraße 4, D-85748, Garching, Germany.
Silicon is by far the most important semiconducting material. However, solution-based synthetic approaches for unsaturated silicon-rich molecules require less efficient multi-step syntheses. We report on a straightforward access to soluble, polyhedral Si clusters from the binary phase KSi, which contains both [Si] and [Si] clusters.
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