Acoustic Pressure Mapping
Acoustic Pressure Mapping - Related Videos
12:26
Fabrication, Operation and Flow Visualization in Surface-acoustic-wave-driven Acoustic-counterflow Microfluidics
0 Views •
Cited by 4 •
2013
In this video we first describe fabrication and operation procedures of a surface acoustic wave (SAW) acoustic counterflow device. We then demonstrate an experimental setup that allows for both qualitative flow visualization and quantitative analysis of complex flows within the SAW pumping device.
07:26
Synthesis and Microdiffraction at Extreme Pressures and Temperatures
0 Views •
Cited by 5 •
2013
The laser heated diamond anvil cell combined with synchrotron micro-diffraction techniques allows researchers to explore the nature and properties of new phases of matter at extreme pressure and temperature (PT) conditions. Heterogeneous samples can be characterized in situ under high pressure by 2D mapping and combined powder, single-crystal and multigrain diffraction approaches.
08:06
Automated Acoustic Dispensing for the Serial Dilution of Peptide Agonists in Potency Determination Assays
0 Views •
Cited by 1 •
2016
Peptide adsorption to plasticware during traditional tip-based serial dilutions can significantly impact potency determination and confound the understanding of structure-activity relationships used for lead identification and lead optimization phases of drug discovery. Here methods for automated acoustic non-contact serial dilution of peptide samples are described.
14:22
Activating Molecules, Ions, and Solid Particles with Acoustic Cavitation
0 Views •
Cited by 6 •
2014
Acoustic cavitation in liquids submitted to power ultrasound creates transient extreme conditions inside the collapsing bubbles, which are the origin of unusual chemical reactivity and light emission, known as sonoluminescence. In the presence of noble gases, nonequilibrium plasma is formed. The "hot" particles and the photons generated by collapsing bubbles are able to excite species in solution.
08:38
Habituation and Prepulse Inhibition of Acoustic Startle in Rodents
0 Views •
Cited by 164 •
2011
Habituation and prepulse inhibition of startle are operational measures of sensory gating. Sensory gating is disrupted in schizophrenia, and some other mental disorders and neurodegenerative diseases. We here describe a standard protocol to assess short-term and long-term habituation as well as prepulse inhibition of acoustic startle responses in rats and mice.
FAQs
Calibration makes readings suitable for quantitative comparison across measurement positions. During acoustic pressure mapping, a calibrated hydrophone records pressure at multiple locations, allowing researchers to compare pressure measurements consistently across the field. This supports more dependable characterization of field strength, uniformity, and focal regions in ultrasound systems.
A map can show whether acoustic pressure is distributed uniformly or concentrated in focal regions, rather than relying on a single measurement. Researchers can use these spatial patterns to characterize field strength and recognize where acoustic energy is concentrated. That information helps evaluate whether a system produces the intended exposure pattern.
Focused ultrasound requires attention to where acoustic energy is concentrated, not only to an overall system reading. Spatial maps let researchers evaluate treatment conditions and identify exposure patterns outside the intended focal region. In medicine, this supports efforts to improve procedural precision and safety when devices deliver controlled acoustic energy.
Measurements are first acquired with a calibrated hydrophone or similar sensor at multiple positions. The recorded pressure values are then assembled into a spatial representation of the sound field. Researchers can inspect this map for field strength, uniformity, focal regions, and unintended exposure patterns, depending on whether they are calibrating equipment or evaluating treatment conditions.
Medical researchers apply it during calibration and quality assurance of ultrasound systems, including diagnostic imaging equipment and focused ultrasound devices. The resulting spatial information can show whether acoustic output is consistent with the intended field. It also helps evaluate treatment conditions in research and medical settings.
Maps can reveal pressure patterns that might otherwise be missed when exposure is considered without spatial detail. Researchers can use those findings to identify unintended exposure patterns, refine treatment conditions, and improve the precision of procedures using controlled acoustic energy. This makes the method relevant to safety assessment as well as performance evaluation.