Asymmetric Stretching
Asymmetric Stretching - Related Videos
07:19
Microfluidic Imaging Flow Cytometry by Asymmetric-detection Time-stretch Optical Microscopy (ATOM)
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Cited by 5 •
2017
This protocol describes the implementation of an asymmetric-detection time-stretch optical microscopy system for single-cell imaging in ultrafast microfluidic flow and its applications in imaging flow cytometry.
08:19
Asymmetric Walkway: A Novel Behavioral Assay for Studying Asymmetric Locomotion
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Cited by 4 •
2016
Here, we present a protocol to quantify precise stepping in rodents. Cortical and the spinal central pattern generator signals are required for precise foot-placement during obstructed locomotion. We report here the novel constrained walking task that directly examines precise stepping behavior.
07:42
Live Cell Imaging during Mechanical Stretch
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Cited by 12 •
2015
A novel imaging protocol was developed using a custom motor-driven mechanical actuator to allow the measurement of real time responses to mechanical strain in live cells. Relevant to mechanobiology, the system can apply strains up to 20% while allowing near real-time imaging with confocal or atomic force microscopy.
01:11
Rotation of Asymmetric Top
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2023
By definition, a spherically symmetric body has the same moment of inertia about any axis passing through its center of mass. This situation changes if there is no spherical symmetry. Since most rigid bodies are not spherically symmetric, these require special treatment. The relationship between the angular momentum of any rigid body and its angular velocity, both of which are vectors, involves the moment of inertia. The moment of inertia is a scalar quantity only for spherically symmetric...
09:41
Stretching Micropatterned Cells on a PDMS Membrane
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Cited by 6 •
2014
This manuscript presents a technique to apply or release forces on adherent cells or tissues using unidirectional stretching.
FAQs
Infrared absorption occurs when the vibration produces a changing dipole moment that can interact with infrared radiation. In an asymmetric motion, the unequal timing of bond length changes can alter the charge distribution across the vibrating group. The resulting absorption appears at a characteristic frequency, giving chemists a spectral feature that can be related to a functional group and its molecular structure.
The key distinction is the relative timing of bond motions. Asymmetric stretching has similar bonds changing length out of phase, whereas symmetric stretching provides a contrasting vibrational pattern. Comparing the two helps chemists interpret which spectral features arise from different motions within a functional group. This comparison can strengthen structural assignments rather than relying on one band in isolation.
The characteristic frequency reflects the vibrating bonds and their molecular environment. Chemists therefore interpret an asymmetric stretching band alongside information about bonding, geometry, and the surrounding structure. Related compounds may show different spectral patterns because their functional groups experience different molecular contexts. Examining these variations supports distinctions between compounds that share chemically similar bonds.
Analysis begins by locating bands at characteristic frequencies and considering whether they could arise from asymmetric stretching within a functional group. Chemists then compare the pattern with symmetric stretching and other vibrational modes, while relating the features to molecular bonding and geometry. This combined interpretation supports qualitative identification instead of assigning structure from a single spectral signal.
The technique is useful when related compounds contain comparable functional groups but differ in molecular structure or environment. Their asymmetric stretching bands can contribute to different infrared spectral patterns, which chemists compare during qualitative analysis. Interpreting these bands together with other vibrational modes helps reveal structural differences that may not be evident from the shared presence of similar bonds alone.
Asymmetric stretching connects an observed infrared band with the behavior of bonds in a molecular structure. Its frequency and spectral pattern can help relate vibrational motion to bonding, geometry, and molecular environment. In chemistry, this makes the feature useful not only for recognizing functional groups but also for supporting structural interpretation and comparisons among related compounds.