Spiral Curves
Spiral Curves - Related Videos
03:51
Label-Free Neutrophil Separation from Tracheal Secretion Using Spiral Microfluidics Channel
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2025
This video demonstrates separating neutrophils from tracheal secretions using a microfluidic device with spiral channels. The device achieves efficient separation based on cell size by utilizing varying thicknesses and trapezoidal-shaped channels. The interplay between forces results in large neutrophils accumulating near the inner wall while erythrocytes and mucin aggregates remain near the outer wall, ensuring effective neutrophil separation.
02:35
Culturing Murine Spiral Ganglion Neuron Explants on Multielectrode Arrays
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2025
This video demonstrates the process for isolating spiral ganglion explants from the inner ear and co-culturing them with the organ of Corti on a multielectrode array. Spiral ganglia are carefully extracted and sectioned into smaller tissue sections or explants. These explants are cultured on the multielectrode array's active area to promote neuronal process outgrowth.
07:51
Spiral Ganglion Neuron Explant Culture and Electrophysiology on Multi Electrode Arrays
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Cited by 5 •
2016
We present a protocol to culture primary murine spiral ganglion neuron explants on multi electrode arrays to study neuronal response profiles and optimize stimulation parameters. Such studies aim to improve the neuron-electrode interface of cochlear implants to benefit hearing in patients as well as the energy consumption of the device.
07:43
Calibration Curves
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2023
Source: Laboratory of Dr. B. Jill Venton - University of Virginia Calibration curves are used to understand the instrumental response to an analyte and predict the concentration in an unknown sample. Generally, a set of standard samples are made at various concentrations with a range than includes the unknown of interest and the instrumental response at each concentration is recorded. For more accuracy and to understand the error, the response at each concentration can be repeated so an error...
02:40
Analyzing Neural Activity in Primary Murine Spiral Ganglion Neurons Using Multielectrode Arrays
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2025
This video demonstrates the recording of spontaneous and stimulation-dependent neural activity from primary murine spiral ganglion neuron (SGN) cultures on a multielectrode array (MEA). It involves washing and preparing the MEA, recording spontaneous neural activity, and applying controlled electrical stimuli to identify stimulation-dependent neuronal activity.
FAQs
In a clothoid, curvature increases linearly with arc length, so each additional segment produces a predictable change in geometric turning. This relationship creates a gradual progression between shapes with different curvature rather than concentrating the change at one location. Engineers can therefore analyze the curve using distance along its length as a direct control on its geometric behavior.
A gradual curvature change moderates how a moving system responds as it follows a path. Instead of producing an abrupt shift in lateral acceleration or steering demand, the transition distributes that change along the curve. In engineering design, this supports smoother motion and helps address safety, comfort, and dynamic-performance requirements in transportation and robotic systems.
A circular arc supplies constant curvature throughout its length, while a spiral provides a changing-curvature transition between geometric conditions. The distinction matters when an alignment must avoid an immediate change from one curvature state to another. Selecting a spiral rather than relying only on circular geometry can produce a more continuous trajectory for systems sensitive to steering or lateral-motion changes.
Engineers place a spiral where a path must transition between geometric shapes with different curvature, then describe its changing geometry along the distance traveled. The resulting alignment or trajectory can be examined for curvature progression, lateral-acceleration behavior, and steering demand. This approach links geometric design with dynamic evaluation rather than treating the path as a sequence of abrupt changes.
Applications include highway alignments, railway alignments, and interchange geometry, where smooth transitions influence how vehicles negotiate designed paths. Spiral curves also support robotic motion paths that require controlled trajectory changes. Across these settings, the same geometric principle helps connect different curvature conditions while supporting accurate design, analysis, and practical dynamic performance.
By distributing curvature change along a path, the design can reduce abrupt lateral-acceleration and steering-demand changes. That behavior contributes to smoother trajectories and can improve safety and comfort in transportation applications. It also supports constructability, accurate geometric analysis, and dynamic performance, making spiral geometry useful when both physical implementation and motion behavior matter.