Experimental approaches to the difference in the Casimir force due to modifications in the optical properties of the boundary surface

摘要: We propose two experiments on the measurement of Casimir force acting between a gold coated sphere and semiconductor plates with markedly different charge carrier densities. In first these patterned Si plate is used which consists sections dopant densities oscillates in horizontal direction below sphere. The scheme this experiment differential, i.e., it allows direct high-precision difference forces or equivalent pressures Au parallel static dynamic techniques, respectively. second proposes to measure same VO{sub 2} film undergoes insulator-metal phase transition increase temperature. report present status interferometer based variable temperature apparatus developed perform both results calibration sensitivity. magnitudes experimental configurations are calculated using theoretical approaches description optical conductivity properties semiconductors at low frequencies proposed literature. It shownmore » that suggested will aid resolution problems arising application Lifshitz theory nonzero real materials. They also open new opportunities nanotechnology.« less