Localized surface plasmon resonance effect dominates room temperature formaldehyde gas sensor with ultra-high sensitivity and selectivity.

Universal sensitivity and high operating temperature have always been the serious problems faced by semiconductor based gas sensors in practical applications. The use of photoelectric and Localized Surface Plasmon Resonance (LSPR) effects can replace heating to provide energy to electrons. However, the differences between electrons generated by photoelectirc effect and LSPR effect, as well as the impact of these differences on gas sensing performance are still unclear.

Study on molecular structural heterogeneity of tar-rich coal based on micro-FTIR.

The coal molecular structure in micro-areas plays a critical role in matrix thermal conduction and volatile generation during the pyrolysis of tar-rich coal. However, as a major maceral contributing to hydrocarbon generation, the molecular structures of different micro-areas in vitrinite show heterogeneity, which still lacks research. Micro-FTIR technology was used in this study to characterize the molecular structure in different micro-areas of tar-rich coal with varying tar yields.

Study on Strain Characterization and Failure Location of Rock Fracture Process Using Distributed Optical Fiber under Uniaxial Compression.

A rock fracture test is a very important method in the study of rock mechanics. Based on the Mechanics Test System (MTS), the dynamic strain response of the failure process of cylindrical granite specimens under uniaxial compression was observed by using distributed optical fiber strain sensors. Two groups of tests were designed and studied for rock sample fracturing.

Electronic structure-dependent formaldehyde gas sensing performance of the InO/CoO core/shell hierarchical heterostructure sensors.

Constructing p-n heterojunction is considered as an effective approach to improve gas-sensing performance of nanomaterials, and the general focus is that the formation of a p-n junction can effectively broaden the electron-depletion layer, enhancing the amount of the adsorption oxygen, and being beneficial to the improvement of the gas-sensing performance. However the widening of the depletion layer can only contribute to the improvement of the sensitivity, the effect of p-n junction on other sensing parameters is still not well understood. Herein, the InO/CoO core/shell hierarchical heterostructures (InO/CoO HHS) are investigated to discern how p-n junction alters the sensing process.

Investigation of the polymerization mechanism of ferrocene doped C under high pressure and high temperature.

In situ high pressure and high temperature (HPHT) study has been carried out on C/ferrocene (Fc) in order to detect the process of polymerization and reveal the polymerization mechanism. Pristine C was also studied under same conditions for comparison. In both cases, similar types of polymers can be observed after pressure and temperature release, but with different fractions, i.

Crystal structures of (E)-3-(furan-2-yl)-2-phenyl-N-tosyl-acryl-amide and (E)-3-phenyl-2-(m-tol-yl)-N-tosyl-acryl-amide.

In the title N-tosyl-acryl-amide compounds, C20H17NO4S, (I), and C23H21NO3S, (II), the conformation about the C=C bond is E. The acryl-amide groups, [-NH-C(=O)-C=C-], are almost planar, with the N-C-C=C torsion angle being -170.18 (14)° in (I) and -168.