This article contains information related to sensitivity, silicon nitride layer, force, microsystem technology, mechanical engineering, research, nitride layer, sensor, penetration force, transmission phase gratings, and optical encoders. In this article you can get description about force encoder, spring constant, silicon nitride, membrane, injector, systems, transmission, integrated optical encoder, silicon, injection, and penetration.
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We present a micrograting-based force sensor integrated with a surface micromachined silicon-nitride probe for penetration and injection into Drosophila embryos. The probe is supported by springs of a known spring constant, and the penetration force is determined from displacement measurements using a high-resolution, miniaturized optical encoder that is designed to only be sensitive to axial deﬂections of the probe. The optical-encoder force sensor exhibits conﬁgurable sensitivity and dynamic range, allowing monitoring over a wide range of forces. The periodicity of the encoder response can be used for calibration of the injector displacement and to obtain information about the localized elastic properties of the target.
Even more, the article contains discussion such as sensing, injector displacement, deformation, diffraction efﬁciency, motion, transmission phase, displacement, encoder, diffraction, injection force, and ﬁrst diffraction.