A facile approach has been developed to fabricate ZnO hierarchical architectures with different morphologies under hydrothermal conditions. ZnO nanorod-based whisks and nanorod-based dandelions have been synthesized through the adjustment of the ratio of Zn(NO 3 ) 2 to glycine. The structures of ZnO hierarchical architectures have been examined by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), selected area electron diffraction (SAED), and high-resolution transmission electron microscopy (HRTEM), and the possible growth mechanism of these ZnO nanostructures has also been discussed. In addition, the photocatalytic properties of these ZnO nanostructures have been also investigated. Investigations confirm that the morphology and specific surface areas play important roles in the photocatalytic properties of these ZnO nanomaterials.
Integrating textiles with a signal collector may provide sustainable solutions for wearable electronic devices in the Internet of Things era owing to the soaring development of chemistry and materials. This study adopted soluble starch(S) granules for advancing the resistance and formability of polyvinylalcohol (PVA) hydrogel in the structural deformation stage, thus preparing a PVA based composite hydrogel wire that may be produced continuously. In the whole process, the mechanical performance, strain resistance and sensing property of the hydrogel wire were studied. The results showed that when PVA : S=7 : 3, the hydrogel wire had the best formability and mechanical performance, and the stress and strain were 2.3 MPa and 255 % respectively. When starch granules were added in the hydrogel wire, the coincidence degree between starting stress and cyclic stress was increased after the wire was stretched by 17.5 %, and thus, the stability of the hydrogel wire was improved. In addition, the electronic skin strain sensors assembled with hydrogel wires can detect the movement of different parts of the body effectively. In particular, a piezoelectric sensor braided with polyurethane‐encapsulated hydrogel wire may not only generate a voltage about 0.4 mV at a slight touch, but also locate the stress point. When an induction coil is prepared with the hydrogel wire, the magnetoionic induction of a single coil can produce a significant induced voltage, which is conductive to the wireless signal transmission of hydrogel. As a conductor, the hydrogel wire also had a current reaction in phase to AC voltage. And according to the experiment, it is speculated that as braided and electronically integrated, the hydrogel wire can be used in smart fabrics for strain sensing, wireless signal transmission, and force location.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.