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An optical image scanning method using the longitudinal acoustoelectric effect by surface waves in the coupled p-Si/LiNbO3 system is described. By means of the coupling between electrons in a weak inversion layer and surface waves (frequency, 87 MHz; time duration, 400 nsec), a resolution of 2 lines/mm can be obtained.
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Takada et al. (1973) studied this question.
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