Micro Channel Plate Detector
Micro Channel Plate Detector - Related Videos
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A step-by-step generic process to create a bone-like template with engineered micro-channels is presented. High absorption and retention capabilities of the template are demonstrated by capillary action via micro-channels.
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Source: Claes, J., et al, In Vitro and In Vivo Model to Study Bacterial Adhesion to the Vessel Wall Under Flow Conditions. J. Vis. Exp. (2015).This video demonstrates a method for studying host-pathogen interactions using a micro-parallel plate flow chamber seeded with human primary endothelial cells. Following endothelial cell activation by an ionophore and perfusion with fluorescently labeled bacteria, the cells release von Willebrand factor (VWF), which binds bacterial adhesins under shear...
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Fabrication of the Thermoplastic Microfluidic Channels
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Chemotactic Response of Marine Micro-Organisms to Micro-Scale Nutrient Layers
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01:19
Ion Channels
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The movement of ions like sodium, potassium, and calcium into and out of the cell is essential to maintain the electrochemical gradient in living cells. The ion channels—a class of membrane transport proteins—help maintain this ionic gradient for the smooth functioning of physiological activities such as maintaining cell size and volume, conducting nerve impulses, and gas and nutrient exchange. Ion channels are specialized integral membrane proteins on the plasma membrane that allow specific...
FAQs
The applied voltage accelerates an electron through a microscopic channel. As the electron moves, it triggers secondary-electron emission, and those new electrons are accelerated in turn. Repeating this process creates a cascade rather than a single-electron response, allowing a weak incoming event to produce a measurable electrical pulse for detection.
The resistive coating forms an essential part of the channel surfaces where the electron cascade develops. Incoming radiation can release an electron, and the channel environment supports repeated secondary-electron emission as that electron travels under the applied voltage. This internal multiplication is what converts a small initial event into a detectable output.
Fast timing allows the detector to associate a signal closely with the arrival of a particle or photon, which is important when measurements depend on event timing. Its microscopic, parallel-channel structure also supports high spatial resolution, helping distinguish where signals occur. Together, these properties make the device useful for resolving weak events in physics experiments.
The detector can respond to charged particles, photons, and other radiation when an incoming event releases an electron that initiates amplification. This broad response supports particle detection as well as ultraviolet and X-ray measurements. Its sensitivity is particularly valuable when the radiation produces weak signals that require internal amplification before readout.
In time-of-flight measurements, the detector's fast timing helps record when an amplified signal arrives, supporting measurements based on particle arrival times. Mass spectrometry is another application in which detecting weak particle-related signals is important. The resulting measurable pulses provide the detector output needed for these timing-sensitive experimental systems.
Within an image intensifier, the detector supplies sensitive amplification for weak signals so that otherwise difficult-to-measure radiation can produce a stronger measurable response. Its high spatial resolution is also relevant when preserving information about where signals occur. This combination makes the technology useful for imaging applications involving ultraviolet or X-ray radiation.