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A topotactic reaction strategy has been reported to achieve the oriented attachment of colloidal metal chalcogenide quantum dots into micrometer-sized nanosheets and nanobelts (up to 6-7 μm) on both mechanically rigid and flexible substrates. The non-stoichiometric compositions, crystallization, Ag doping and good contact with substrate were controlled well. The observation of weak anti-localization phenomena and Hall effect sensitivity, the improved I-V and photoresponse property and the stable I-V property of these nanosheet films on flexible substrates under bending force testify their potential electronic device application.
For the first time, we investigate the synergistic effect of one-dimensional nanofibrillated cellulose (NFC) and two-dimensional graphene oxide (GO) to facilitate low-cost, mechanically strong hybrid microfibers. Both experimental and molecular dynamics simulations were carried out. Such GO-NFC hybrid microfibers show an elastic modulus of 34.1 GPa, an ultimate tensile strength of 442.4 MPa and a toughness of 4.9 MJ m−3, which outperform among the best GO fibers in literature. This study promotes a new design strategy to create high-performance microfibers for a range of applications.
