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Background
Automated sperm analysis has wide applications in infertility diagnosis. Existing systems are not able to measure sperm count and both motility and morphology of individual live spermatozoa. Morphology measurement requires invasive staining, making the spermatozoa after morphology measurement not applicable to infertility treatment.
Objective
To evaluate the reproducibility and reliability...
Here, a novel method, real-time scan speed control for raster scan amplitude modulation atomic force microscopes (AM-AFMs), is proposed. In general, the imaging rate is set to a fixed value before the experiment, which is determined by the feedback control calculations on each imaging point. Many efforts have been made to increase the AFM imaging rate, including using the cantilever with high eigenfrequency,...
This paper presents a new structure of a novel horizontal atomic force microscope probe utilizing a quartz tuning fork. The horizontal structure exhibits high resistance to environmental noise, and thus the probe can maintain good stability throughout the imaging work. The quartz tuning fork, which is utilized as a force sensor due to its simple mechanical structure and self-actuating and self-sensing...
The hysteresis nonlinearities of a voice coil motor are characterized under different amplitudes and bias levels of input current signals. The measured data reveal that the asymmetric characteristics of the output-input hysteresis loop are strongly dependent on the amplitude and bias of the input signal. A modified Prandtl-Ishlinskii model is proposed in this study to model the rate-independent hysteresis...
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