64 research outputs found
An open-source high-frequency lock-in amplifier
Get PDFWe present characterization of a lock-in amplifier based on a field
programmable gate array capable of demodulation at up to 50 MHz. The system
exhibits 90 nV/sqrt(Hz) of input noise at an optimum demodulation frequency of
500 kHz.The passband has a full-width half-maximum of 2.6 kHz for modulation
frequencies above 100 kHz. Our code is opensource and operates on a
commercially available platform
Light and electron microscopic immunocytochemical analysis of the dopamine innervation of the rat visual cortex
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Ultrasound-guided injection of botulinum toxin in a patient with omohyoid muscle syndrome: A case report
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Automatic identification of molecular similarity using reduced-graph representation of chemical structure
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