Using a previously shown method, we prepared 2”-GaN wafers as templates for a self separation process. Self separation is happening during cooldown after growing thick layers of GaN in our hydride vapor phase epitaxy (HVPE) reactor. Our templates consist of GaN grown by metalorganic vapor phase epitaxy (MOVPE) directly on sapphire. These GaN layers are masked with 200nm of SiN that are structur...

Properties of atomic or molecular clusters surrounded by a vapour phase are needed in predicting nucleation rates and in development of phenomenological nucleation models. We have performed molecular dynamic (MD) simulations to investigate effects of thermostatting, boundary conditions and system size in cluster–vapour equilibrium. The studied system consists of Lennard–Jones (LJ) argon atoms w...

An experimental investigation of the phosphorescence properties of liquid and vapour acetone is presented with the goal of introducing a novel technique for improved two-phase flow visualization. Commonly applied laser induced fluorescence (LIF) investigations of two-phase flows are challenging, in particular because of the large disparity in fluorescence intensity between the two phases and th...

The composition, vapour pressure, and heat capacity of nine biodiesel fuels from different sources were measured. The vapour pressure of the biodiesel fuels is modeled assuming an ideal liquid phase of the fatty acid methyl esters constituting the fuel. New methodologies to calculate the vapour pressure and ideal gas and liquid heat capacities of the biodiesel fuel constituents are proposed. Tw...

A novel scheme of flash evaporation feeding for MOCVD processes of multicomponent oxide films deposition is proposed. The scheme comprises 1) microdozage of organic solution of solid volatile precursors on the glass fiber belt, 2) evaporation of the solvent and 3) flash evaporation of MOC microdoses from the belt. The functioning of the designed feeder is described and the features of proposed ...

Book 15th American Conference on Crystal Growthand Epitaxyand11th Biennial Workshop on OMVPEand3rd International Symposium on Lasers andNonlinear Optical Materials July 20-24, 2003Keystone, Colorado Sponsored by theAmerican Association for Crystal Growth

F. Tuomisto; 1; 5, T. Suski1, H. Teisseyre1, M. Krysko1, M. Leszczynski1, B. Lucznik1, I. Grzegory1, S. Porowski1, D. Wasik2, A. Witowski2, W. Gebicki3, P. Hageman4, and K. Saarinen5 1 High Pressure Research Center, Unipress, Polish Academy of Sciences, 01-142 Warsaw, Poland 2 Institute of Experimental Physics, Warsaw University, Hoza 69, Warsaw, Poland 3 Warsaw University of Technology, Koszyk...