Organic covalent modification to improve thermoelectric properties of TaS.

Organic semiconductors are attracting considerable attention as a new thermoelectric material because of their molecular diversity, non-toxicity and easy processing. The side chains which are introduced into two-dimensional (2D) transition metal dichalcogenides (TMDs) by covalent modification lead to a significant decrease in their thermal conductivity. Here, we describe a simple approach to preparing the side chains covalent modification TaS (SCCM-TaS) organic/inorganic hybrid structures, which is a homogeneous and non-destructive technique that does not depend on defects and boundaries.

Synthesis of a monolayer fullerene network.

Two-dimensional (2D) carbon materials, such as graphene, have attracted particular attention owing to the exceptional carrier transport characteristics that arise from the unique π-electron system in their conjugated carbon network structure. To complement zero-bandgap graphene, material scientists have devoted considerable effort to identifying 2D carbon materials. However, it is a challenge to prepare large-sized single-crystal 2D carbon materials with moderate bandgaps.

Multi-Decker Emissive Supramolecular Architectures Based on Shape-Complementary Ligands Pair.

Dye aggregates have attracted a great deal of attention due to their widespread applications in organic light-emitting devices, light-harvesting systems, etc. However, the strategies to precisely control chromophores with specific spatial arrangements still remain a great challenge. In this work, a series of double- and triple-decker supramolecular complexes are successfully constructed by coordination-driven self-assembly of carefully designed shape-complementary ligands, one claw-like tetraphenylethylene (TPE)-based host ligand and three tetratopic or ditopic guest ligands.

Thermal Rectifier and Thermal Transistor of 1T/2H MoS for Heat Flow Management.

Thermal rectifiers and thermal transistors are expected to be widely used for efficient thermal management and energy cascade utilization due to their excellent directional thermal management. Two-dimensional micro/nano materials have huge potential in the applications of thermal transistors, thermal logic circuits, and thermal rectifiers owing to the phase transition and thermal rectification phenomenon. Herein, a lithium intercalation method was used to transform 2H-MoS into the 1T phase with a purity of 76%, and a suspended microelectrode was applied to measure the thermal conductivity and thermal rectification coefficient of the same MoS film with 1T and 2H phases in suit.

Dual-rotor tool path generation and removal error analysis in active feed polishing.

High-quality ultrasmooth surface is needed in modern optics, while the existing ultrasmooth surface processing methods are difficult to meet the requirement of the surface figure. In order to solve this problem, the active feed polishing (AFP) is taken as the research object, and the dual-rotor tool path is put forward for this technology. This tool path is generated based on the motion synthesis principle, which realizes smooth connection between different sections.