TY - GEN AU - Kamal Mohamed Fahmy Shoaib AU - Gamal Abd El fattah , AU - Mohammed Abdullah Semary , AU - Yehia Abd El hamid Badr , TI - A study of the physical properties of porous silicon / PY - 2007/// CY - Cairo : PB - Kamal Mohamed Fahmy Shoaib , KW - Physical properties KW - Physics KW - Porous silicon N1 - Thesis (PH.D.) - Cairo University - Faculty Of Science - Department Of Physics; Issued also as CD N2 - A set of porous Si samples has been fabricated through electrochemical etching in an HF - based electrolyte Electrochemical etching was performed on two groups of samples , depending on the current density and the etching times ER -