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In this paper, we investigate a novel robust control approach for a class of uncertain nonlinear systems with multiple inputs containing sector nonlinearities and deadzones. Sliding mode control (SMC) is suggested to design stabilizing controllers for these uncertain nonlinear systems. The controllers guarantee the global reaching condition of the sliding mode in these systems. They can work effectively for systems either with or without sector nonlinearities and deadzones in the inputs. Moreover, the controllers ensure that the system trajectories globally exponentially converge to the sliding mode. Illustrative examples are demonstrated to verify the effectiveness of the proposed sliding mode controller.

An analysis has been made of interfacial texture created during the wet oxidation of polycrystalline silicon (polysilicon) over the temperature range 950°–1100°C, and the effect of this texture on oxide breakdown. Four types of interfacial textural features are described: interface roughness due to initial polysilicon surface texture, “bumps” caused by anomalous polysilicon nucleation at local sites of contamination, “protuberances” that occur during oxidation, and inclusions of unoxidized silicon within the oxide. Models for the generation of the last two defects are presented, and the role of interfacial texture in dielectric breakdown is discussed.

In this study, we synthesized a new polymer, PCTDBI, containing alternating carbazole and thiadiazole‐benzoimidazole (TDBI) units. This polymer (number‐average molecular weight = 25,600 g mol−1), which features a planar imidazole structure into the polymeric main chain, possesses reasonably good thermal properties (Tg = 105 °C; Td = 396 °C) and an optical band gap of 1.75 eV that matches the maximum photon flux of sunlight. Electrochemical measurements revealed an appropriate energy band offset between the polymer's lowest unoccupied molecular orbital and that of PCBM, thereby allowing efficient electron transfer between the two species. A solar cell device incorporating PCTDBI and PCBM at a blend ratio of 1:2 (w/w) exhibited a power conversion efficiency of 1.20%; the corresponding device incorporating PCTDBI and PC71BM (1:2, w/w) exhibited a PCE of 1.84%. © 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2010