Frequency Dissipation Monitoring
Frequency Dissipation Monitoring - Related Videos
03:36
Dissipative Microgravimetry Technique to Study Protein-Lipid Bilayer Interaction
0 Views •
2025
This video demonstrates a dissipative microgravimetry technique to investigate the binding of proteins to lipid bilayers. Small unilamellar vesicles are added to coat the surface of the quartz sensor of a microbalance. Utilizing the calcium ion-dependent binding of the target phospholipid-binding protein to the bilayer, changes in the oscillation frequency of the sensor and the dissipation of the oscillation are monitored to determine the nature of the protein-lipid bilayer binding.
01:15
Power Dissipated in a Circuit: Problem Solving
0 Views •
2023
The equivalent resistance of a combination of resistors depends on their values and how they are connected. The simplest combinations of resistors are series and parallel connections. In a series circuit, the first resistor's output current flows into the second resistor's input; therefore, each resistor's current is the same. Thus, the equivalent resistance is the algebraic sum of the resistances. The current through the circuit can be found from Ohm's law and is equal to the battery's emf...
06:44
Deep Vein Thrombosis Induced by Stasis in Mice Monitored by High Frequency Ultrasonography
0 Views •
Cited by 6 •
2018
The present protocol describes the steps to obtain venous thrombosis using a stasis model. In addition, we are using a non-invasive method to measure thrombus formation and resolution over time.
09:39
Characterizing Dissipative Elastic Metamaterials Produced by Additive Manufacturing
0 Views •
Cited by 1 •
2024
Additively manufactured polymers have been widely used for producing elastic metamaterials. The viscoelastic behavior of these polymers at ultrasonic frequencies remains, however, poorly studied. This study reports a protocol to estimate the viscoelastic properties of 3D-printed polymers and show how to use them to analyze the metamaterial dynamics.
09:38
Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies
0 Views •
Cited by 4 •
2015
We describe the generation of far-infrared radiation using an optically pumped molecular laser along with the measurement of their frequencies with heterodyne techniques. The experimental system and techniques are demonstrated using difluoromethane (CH2F2) as the laser medium whose results include three new laser emissions and eight measured laser frequencies.
FAQs
Frequency shifts and dissipation changes provide complementary information rather than interchangeable measurements. A shift in resonance frequency signals altered material loading at the oscillating surface, whereas dissipation reports how much energy the system loses during each cycle. Considering both signals helps distinguish simple accumulation from changes in the attached layer’s mechanical or structural state during a biomolecular or cellular interaction.
The piezoelectric quartz crystal supplies the controlled oscillation that makes interfacial changes measurable. When material adsorbs at its surface, the resonance response changes; the instrument can therefore follow accumulation without requiring a label. This surface-sensitive arrangement is especially useful when binding, membrane formation, coating development, or cell attachment needs to be observed as it occurs.
Dissipation is particularly informative when the attached layer does not behave as a rigid deposit. Energy loss can be interpreted alongside changes in softness, hydration, and structural organization, allowing investigators to assess how an interfacial layer changes rather than only whether material is present. This distinction matters for comparing protein films, lipid membranes, polymer coatings, and cell-associated layers.
A basic measurement follows the surface response while the quartz crystal oscillates at a controlled frequency. Investigators track resonance-frequency and dissipation signals as material accumulates or an interface changes, then compare the two readouts over time. The resulting record links adsorption with concurrent viscoelastic behavior, providing a real-time view of the interfacial process rather than a single endpoint.
Within biological techniques, the method can monitor protein binding, lipid membrane formation, polymer-coating development, and cell adhesion. These use cases span molecular interactions, engineered interfaces, and whole-cell behavior while retaining a common measurement principle. The ability to follow each process in real time supports characterization of how biological or material layers accumulate and reorganize at a surface.
Measurements can guide development of biosensors, biomaterials, and drug-delivery systems by revealing interfacial behavior during layer formation or cell attachment. Frequency data indicate changes associated with surface accumulation, while dissipation adds information about the layer’s softness, hydration, or organization. Together, these outcomes help connect a surface event with the physical properties of the resulting interface.