Punctuated Pressure Probes
Punctuated Pressure Probes - Related Videos
08:53
The Measurement of Unsteady Surface Pressure Using a Remote Microphone Probe
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Cited by 11 •
2016
Here, we present a protocol to measure, with high spatial resolution, the unsteady surface pressure in turbulent flows. This method demonstrates the construction of a remote microphone probe (RMP) and the determination of its frequency-dependent, complex transfer function. An analytical determination of the dynamic response is presented and validated.
08:10
Building Langmuir Probes and Emissive Probes for Plasma Potential Measurements in Low Pressure, Low Temperature Plasmas
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Cited by 3 •
2021
The main goal of this work is to make it easier for research groups unfamiliar with Langmuir probes and emissive probes to use them as plasma diagnostics, especially near plasma boundaries. We do this by demonstrating how to build the probes from readily available materials and supplies.
07:26
Synthesis and Microdiffraction at Extreme Pressures and Temperatures
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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.
08:42
High-Sensitivity Nuclear Magnetic Resonance at Giga-Pascal Pressures: A New Tool for Probing Electronic and Chemical Properties of Condensed Matter under Extreme Conditions
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Cited by 8 •
2014
Nuclear magnetic resonance is one of the most important spectroscopic tools. Here, the development of a new approach under high pressure, currently up to 10.1 GPa, is presented. This opens a new window into condensed matter physics and chemistry, where high-pressure research is of great importance.
09:04
Epidural Intracranial Pressure Measurement in Rats Using a Fiber-optic Pressure Transducer
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Cited by 30 •
2012
A novel technique to record the pressures within the skull is described. The minimally invasive method uses a fibre-optic pressure sensing system to accurately measure intracranial pressure (ICP) in anaesthetized rats without causing significant brain trauma. The technique may be used in a wide range of experimental models.
FAQs
The pressure response shows how a living cell reacts to a brief, controlled change rather than only indicating its pressure at one moment. By recording the response and the time needed to re-equilibrate, researchers can examine how readily pressure is redistributed and identify mechanical and hydraulic characteristics relevant to cell stability, water balance, and growth.
Re-equilibration time indicates how quickly the cell or surrounding fluid returns toward a balanced state after a pressure pulse. This time-dependent behavior adds information beyond the pressure value itself, helping researchers evaluate water transport and hydraulic properties. Comparing responses under different conditions can therefore show how cellular behavior changes during growth or environmental stress.
The pressure magnitude provides information about the pressure state, while the response pattern and equilibration time show how the cell or nearby fluid accommodates that disturbance. Together, these measurements help separate effects related to tissue or cell mechanics from those associated with water movement and membrane behavior, providing a more complete view of cellular stability.
A fine probe is introduced into the selected living cell, and the instrument applies brief, controlled pressure pulses. Sensors then record the resulting pressure response and the time required for re-equilibration. Researchers interpret these measurements in relation to turgor pressure, water transport, membrane behavior, and tissue mechanics rather than relying on a single pressure reading.
The approach is useful when researchers need to examine how plant cells maintain pressure, shape, or water balance during changing conditions. It supports investigations of plant physiology, cellular growth, and stress responses. Because the measurements capture rapid pressure changes, the technique can connect short-term hydraulic behavior with broader changes in tissue function.
Measurements can help explain how turgor pressure contributes to cell shape and growth, how water moves through living tissues, and how membranes participate in maintaining cellular balance. In stress studies, pressure responses can reveal how cells adjust when conditions fluctuate. These findings contribute to understanding how organisms preserve stability despite changing environments.