@inproceedings{paperid:1034262, author = {M.. Mojahedi and Moeenfard, Hamid and M. Taghi Ahmadian}, title = {Investigation of Casimir and Van der Waals Forces for a Nonlinear Double-Clamped Beam Using Homotopy Perturbation Method}, booktitle = {ASME IMECE 2009}, year = {2009}, location = {Lake Buena Vista, USA}, keywords = {Nano-Switches; Casimir Force; Van der Waals force; Homotopy Perturbation Method; Pull-in Instability}, }