the growth rate and uniformity of carbon nano tubes (cnts) based on chemical vapor deposition (cvd) technique is investigated by using a numerical model. in this reactor, inlet gas mixture, including xylene as carbon source and mixture of argon and hydrogen as  carrier gas enters into a horizontal cvd reactor at atmospheric pressure. based on the gas phase and surface reactions, released carbon...

This paper outlines the state-of-the-art techniques to measure ultra-low flow rates down 5 nL/min that have been developed by eight European organisations in an EMPIR collaborative research project. The include gravimetric, optical interface tracking, pendant drop, micro Particle Image Velocimetry (μPIV) and displacement methods. measurement principles, experimental setup, results uncertainties...