The effective density and transport properties of compacted carbon nanotubes and nanowhiskers

We have studied the effective density, electric conductivity, and thermo emf of compacted carbon nanotubes (NTs) and nanowhiskers (NWs). The effective densities of NTs and NWs are 1.6 and 2.8 g/cm³ respectively. The thermo emf of compacted NWs (33 μV/K) and NTs (7–8μV/K) make it possible to use these materials in sensors of molecular gases and biological objects. It is also recommended to introduce NWs and NTs as fillers into glue compositions possessing increased strength and electric conductivity, which are necessary for gluing metals.     

Investigation of the Saturated Vapor Pressure of Zinc,Selenium, and Zinc Selenide

Temperature dependences of the saturated vapor pressure of elemental zinc (873–1234 K) and selenium (730–1063 K), as well as zinc selenide (673–1373 K), are investigated using the gravimetric method. Analysis of the experimental data demonstrates that these dependences can be adequately described by equations of the form logP = ?A/T+B. The saturated vapor pressures calculated for zinc from the data obtained with the developed gravimetric method are in good agreement with those available in the literature.