Huaqing Xie

Graphene oxide film has great potential applications in many fields. In this work, the flexible GO film was prepared by a assemble method under a directional flow, and the thermophysical properties of the layer film material were investigated. The results indicated the strong anisotropic thermal conductivity in GO film, and there were significantly reduced anisotropic phonon thermal transport in graphene oxide films.

There has been an explosion of research into the physical and chemical properties of carbon-based nanomaterials, since the discovery of carbon nanotubes (CNTs) by Iijima in 1991. Carbon nanomaterials offer unique advantages in several areas, like high surface-volume ratio, high electrical conductivity, chemical stability and strong mechanical strength, and are thus frequently being incorporated into sensing elements. Carbon nanomaterial-based sensors generally have higher sensitivities and a lower detection limit than conventional ones. In this review, a brief history of glucose biosensors is firstly presented. The carbon nanotube and grapheme-based biosensors, are introduced in Sections 3 and 4, respectively, which cover synthesis methods, up-to-date sensing approaches and nonenzymatic hybrid sensors. Finally, we briefly outline the current status and future direction for carbon nanomaterials to be used in the sensing area.

Nanofluids, the fluid suspensions of nanomaterials, have shown many interesting properties, and the distinctive features offer unprecedented potential for many applications. This paper summarizes the recent progress on the study of nanofluids, such as the preparation methods, the evaluation methods for the stability of nanofluids, and the ways to enhance the stability for nanofluids, the stability mechanisms of nanofluids, and presents the broad range of current and future applications in various fields including energy and mechanical and biomedical fields. At last, the paper identifies the opportunities for future research.

This study investigates the thermal conductivity enhancement of liquid paraffin based nanofluids containing copper nanoparticles. The nanofluids were prepared by the two-step method, and the dispersant sodium dodecylbenzenesulfonate was needed for the stability of the suspensions. The measurement of thermal conductivity indicated that substantial increases in thermal conductivity were seen for the nanofluids. There was an approximate linear relationship between the thermal conductivity enhancement ratios and the volume fraction of copper nanoparticles. The thermal conductivity enhancement ratio of the nanofluids with 5.0 vol% was 36%. The thermal conductivity of stable nanofluids was independent of setting time from 10 to 60 minutes. The temperature had a very small effect on the effective thermal conductivity enhanced ratio of the nanofluid. The nanofluid with high thermal conductivity could lead to better thermal performance.