Abstract: A variable reluctance position sensor includes a first element having magnetic sensor sections having excitation coils, first detection coils, and second detection coils, and a second element moveable with respect to the first element. An airgap surface of the second element is periodically meandering. When an alternating signal is supplied to the excitation coils, envelopes of alternating signals induced in the first and second detection coils are dependent on a position of the second element so that the envelopes have a phase shift with respect to each other. The number of the magnetic sensor sections is 1+nP2/P1, where P1 is a spatial shift between successive magnetic sensor sections, P2 is a spatial meandering period of the airgap surface, and n is an integer. The magnetic sensor section in addition to the nP2/P1 magnetic sensor sections is suitable for compensating for unwanted effects caused by ends of the first element.

Abstract: Sulfur containing heterocycle-fused naphthalenetetracarboxylic acid diimide derivatives represented by formula (I) are disclosed, in which, R1 and R2 are C1-C30 and C1-C12 linear alkyl or branched alkyl, respectively; R3 is H or halogen atom. The preparation method of the derivatives and the use thereof in manufacture of organic thin film field effect transistor or organic solar batteries are also disclosed.

Abstract: Sulfur containing heterocycle-fused naphthalenetetracarboxylic acid diimide derivatives represented by formula (I) are disclosed, in which, R1 and R2 are C1-C30 and C1-C12 linear alkyl or branched alkyl, respectively; R3 is H or halogen atom. The preparation method of the derivatives and the use thereof in manufacture of organic thin film field effect transistor or organic solar batteries are also disclosed.