<html><head></head><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, Sans-Serif;font-size:16px"><div id="yui_3_16_0_1_1450947937791_13544"><span id="yui_3_16_0_1_1450947937791_13687">Dear QE users,</span></div><div id="yui_3_16_0_1_1450947937791_13544"><span id="yui_3_16_0_1_1450947937791_13637">I am using QE-5.0.2 and wish to calculate optical properties of transition metal di chalcogenides.</span></div><div id="yui_3_16_0_1_1450947937791_13544"><span id="yui_3_16_0_1_1450947937791_13636">I will appreciate if any one could send me the proper link where it is described </span></div><div id="yui_3_16_0_1_1450947937791_13544"><span id="yui_3_16_0_1_1450947937791_13635">how to calculate dielectric constant, Refractive index, reflectivity, energy loss function etc.....</span></div><div id="yui_3_16_0_1_1450947937791_13544"><span id="yui_3_16_0_1_1450947937791_13686">What type of pseudopotential can be used for this ? probably all pseudo not compatible ...</span></div><div id="yui_3_16_0_1_1450947937791_13544"><span><br></span></div><div id="yui_3_16_0_1_1450947937791_13544"><span>Anxiously waiting</span></div><div></div><div id="yui_3_16_0_1_1450947937791_13543"> </div><div class="signature" id="yui_3_16_0_1_1450947937791_13531"><div id="yui_3_16_0_1_1450947937791_13542">Sohail Ahmad</div><div id="yui_3_16_0_1_1450947937791_13542" dir="ltr">King Khalid University</div><div id="yui_3_16_0_1_1450947937791_13542" dir="ltr">Abha</div></div></div></body></html>