Sancan Han

Flexible electronics with excellent adaptivity to soft tissue have been successfully developed based on the efforts of materials and devices, but the cables for connection of soft electronics are easily overlooked. Xinge Yu and colleagues reported that multi‐scale, recyclable three‐dimensional stretchable core–shell cables (3D‐SCSC) can not only serve as electrically and mechanically reliable interconnects among various soft/rigid/hybrid electronic components but also provide a fundamental platform for the materials design of customized cables.

An as-grown 1-inch-diameter Cs ₂ ZnCl ₄ crystal boule in a quartz ampoule (a), a polished Cs ₂ ZnCl ₄ crystal with dimensions of 10 × 10 × 11 mm ³ , and a diagram illustrating the crystal growth process (c).

The mid-wave single-crystal HgCdTe (211) films were successfully grown on GaAs (211) B substrates by molecular beam epitaxy (MBE). Microstructure and optical properties of the MBE growth HgCdTe films grown at different temperatures were characterized by X-ray diffraction, scanning transmission electron microscopy, Raman and photoluminescence. The effects of growth temperature on the crystal quality of HgCdTe/CdTe have been studied in detail. The HgCdTe film grown at the lower temperature of 151 °C has high crystal quality, the interface is flat and there are no micro twins. While the crystal quality of the HgCdTe grown at higher temperature of 155 °C is poor, and there are defects and micro twins at the HgCdTe/CdTe interface. The research results demonstrate that the growth temperature significantly affects the crystal quality and optical properties of HgCdTe films.

The control on the morphology of semiconductors is one of the most critical issues in modern synthetic chemistry. In this study, we present the shape and size‐controlled conversion of CdS from flower‐like microstructure to spherical nanostructure by simply adjusting the molar ratios of cadmium acetate to thiourea; the morphology transformation was characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The mechanism of the influence of using different amounts of thiourea on the shape evolution for CdS was discussed in detail. The photocatalytic degradation experiments for RhB under visible‐light irradiation were performed to investigate the photocatalytic performance of CdS; highly morphology‐ and size‐dependent photoactivity is presented. Taking in consideration the higher photoactivity on monodisperse nano‐spherical CdS, CdS nanosphere film‐based photodetector device has been successfully fabricated by using oil‐water interfacial self‐assembly strategy, using a Ti/Au electrode, which showed the excellent stability and repeatability. The work reveals the mechanism of the morphological transformation of CdS nanoparticles and their photoactivity, which is of great significance in the relevant fields.

Herein we report superior dye-adsorption performance for flower-like nanostructure composed of two dimensional (2D) MoS₂ nanosheets by a facile hydrothermal method, more prominent adsorption of cationic dye compared with anodic dye indicates the dye adsorption performance strongly depends on surface charge of MoS₂ nanosheets. The adsorption mechanism of dye is analyzed, the kinetic data of dye adsorption fit well with the pseudo-second-order model, meanwhile adsorption capability at different equilibrium concentrations follows Langmuir model, indicating the favorability and feasibility of dye adsorption. The regenerable property for MoS₂ with full adsorption of dye molecules by using alkaline solution were demonstrated, showing the feasibility of reuse for the MoS₂, which is promising in its practical water treatment application.