Coexistent VO (M) and VO (B) Polymorphous Thin Films with Multiphase-Driven Insulator-Metal Transition.

Reversible insulator-metal transition (IMT) and structure phase change in vanadium dioxide (VO) remain vital and challenging with complex polymorphs. It is always essential to understand the polymorphs that coexist in desired VO materials and their IMT behaviors. Different electrical properties and lattice alignments in VO (M) and VO (B) phases have enabled the creation of versatile functional devices.

Monolayer WS Lateral Homosuperlattices with Two-dimensional Periodic Localized Photoluminescence.

Homojunctions and homosuperlattices are essential structures and have been widely explored for use in advanced electronic and optoelectronic devices. However, artificially manipulating crystalline phases in two-dimensional (2D) monolayers is still challenging, especially when attempting to engineer lateral homogeneous junctions in a single monolayer of transition metal dichalcogenides (TMDs). Herein, we demonstrate a lateral homosuperlattice (MLHS) with alternating 1T and 2H domains in a 2D WS monolayer plane.

Low Deposition Temperature Amorphous ALD-GaO Thin Films and Decoration with MoS Multilayers toward Flexible Solar-Blind Photodetectors.

Flexible sensors and photodetectors are among the robust and powerful strategies for advanced and smart devices. Meanwhile, wide band-gap metal oxides are competitive candidates for fabricating flexible solar-blind photodetectors (SBPDs) but still challenging in both fundamental and practical fields. Here, we demonstrate the amorphous ALD-GaO (am-ALD-GaO) thin films realized at a moderate temperature toward flexible SBPDs.

Paper-based biosensor based on phenylalnine ammonia lyase hybrid nanoflowers for urinary phenylalanine measurement.

The Phenylketonuria (PKU) is an inborn defect of phenylalanine (Phe) metabolism, in which Phe accumulated in the blood causing alterations at the central nervous system. Therefore, the detection of PKU is very important for the early diagnosis of PKU patients. However, existing tests for PKU are time-consuming and require high-resource laboratories.