SEM Images of Tungsten Oxide Samples (IMAGE) Far Eastern Federal University Caption SEM images of tungsten oxide samples, a WO3-100, b WO3-300, c WO3-600, d WO3-900. Credit FEFU press office, The Institute of Chemistry FEB RAS Usage Restrictions FEFU press office, The Institute of Chemistry FEB RAS License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.