Nanowerk July 28, 2023 Semiconductor-based biointerfaces are typically established either on the surface of the plasma membrane or within the cytoplasm. In Gram-negative bacteria, the periplasmic space, characterized by its confinement and the presence of numerous enzymes and peptidoglycans, offers additional opportunities for biomineralization, allowing for nongenetic modulation interfaces. A team of researchers in the US (University of Chicago, Argonne National Laboratory, National Renewal Energy Laboratory) demonstrated semiconductor nanocluster precipitation containing single- and multiple-metal elements within the periplasm. The periplasmic semiconductors were metastable and displayed defect-dominant fluorescent properties. The defect-rich (i.e., the low-grade) semiconductor nanoclusters produced in situ could still […]
Tag Archives: Nanoclusters
Nanoclusters self-organize into centimeter-scale hierarchical assemblies
Phys.org April 22, 2022 An international team of researchers (USA – Cornell University, Rochester Institute of Technology, Canada) has created synthetic nanoclusters from an organic–inorganic mesophase composed of monodisperse Cd37S18 magic-size cluster building blocks. The process produced “magic-size clusters” of 57 atoms, about 1.5 nanometers in length. Each of these nanoparticles had a shell of ligands that could interact with each other in such a way that they formed filaments several microns long and hundreds of nanometers wide. The filaments were periodically decorated with the magic-size clusters with perfect spacing between them. Enhanced patterning was achieved by controlling processing conditions, […]