Improving the Sensing Properties of Graphene MEMS Pressure Sensor by Low-Temperature Annealing in Atmosphere.

The high demand for pressure devices with miniaturization and a wide bearing range has encouraged researchers to explore new high-performance sensors from different approaches. In this study, a sensitive element based on graphene in-plane compression properties for realizing pressure sensing is experimentally prepared using microelectromechanical systems (MEMS) fabrication technology; it consists of a 50 µm thick, 1400 µm wide square multilayer component membrane and a graphene monolayer with a meander pattern. The prepared sample is extensively characterized and analyzed by using various techniques, including atomic force microscopy, Raman spectroscopy, infrared spectroscopy, X-ray photoelectron spectroscopy, COMSOL finite element method, and density functional theory.

The complete plastid genome sequence of Maxim.

Maxim. is a widely distributed species of Aquifoliaceae in Eastern Asia. In this study, the complete chloroplast (cp) genome sequence of was assembled and characterized by high-throughput sequencing data.

Complete chloroplast genome sequence and phylogenetic analysis of Champ. ex Benth.

Champ. ex Benth. is domestic to southern China.

Zwitterionic 4-carb-oxy-2-(1-methyl-pyridin-1-ium-4-yl)-1H-imidazole-5-carboxyl-ate.

In the title zwitterionic mol-ecule, C(11)H(9)N(3)O(4), the imidazole and pyridine rings form a dihedral angle of 2.60 (2)°. An intra-molecular O-H⋯O hydrogen bond occurs.