Electronic Measurement
Electronic Measurement - Related Videos
01:30
Electronic Distance Measuring Instruments
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2025
Electronic Distance Measuring Instruments (EDMs) are essential tools in modern surveying, offering precise distance measurements by emitting electromagnetic signals and calculating the time required for these signals to travel to a target and return. Two primary types of signals are used in EDMs — light waves and microwaves — each suited to specific environmental and distance requirements. Light-wave-based EDMs utilize either infrared or laser light, providing high accuracy over short distances...
02:31
Measuring the Kinetic Isotope Effect on Microbial Electron Transport Using Deuterium Oxide
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2025
Source: Tokunou, Y., et al, Electrochemical Detection of Deuterium Kinetic Isotope Effect on Extracellular Electron Transport in Shewanella oneidensis MR-1. J. Vis. Exp. (2018)This video demonstrates a whole-cell electrochemical method to assess how proton transfer affects extracellular electron transport (EET) in electroactive bacteria. By replacing protons with deuterons using deuterium oxide, the method measures changes in current to reveal a kinetic isotope effect, highlighting the role of...
03:07
Electron Affinity
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2020
The electron affinity (EA) is the energy change for adding an electron to a gaseous atom to form an anion (negative ion). This process can be either endothermic or exothermic, depending on the element. Many of these elements have negative values of EA, which means that energy is released when the gaseous atom accepts an electron. However, for some elements, energy is required for the atom to become negatively charged, and the value of their EA is positive. Just as with ionization energy,...
09:53
Micropatterning Transmission Electron Microscopy Grids to Direct Cell Positioning within Whole-Cell Cryo-Electron Tomography Workflows
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Cited by 29 •
2021
The goal of this protocol is to direct cell adhesion and growth to targeted areas of grids for cryo-electron microscopy. This is achieved by applying an anti-fouling layer that is ablated in user-specified patterns followed by deposition of extra-cellular matrix proteins in the patterned areas prior to cell seeding.
01:24
Electron Carriers
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2019
Electron carriers can be thought of as electron shuttles. These compounds can easily accept electrons (i.e., be reduced) or lose them (i.e., be oxidized). They play an essential role in energy production because cellular respiration is contingent on the flow of electrons. Over the many stages of cellular respiration, glucose breaks down into carbon dioxide and water. Electron carriers pick up electrons lost by glucose in these reactions, temporarily storing and releasing them into the electron...
FAQs
These stages prepare a sensor output for interpretation. Amplification makes weak electrical signals more accessible, filtering helps isolate relevant signal behavior, and digitization converts the processed output into data that can be analyzed computationally. Together, they create a measurement pathway from a biological or physical change to a usable dataset for monitoring, device evaluation, or system control.
Different variables require a corresponding conversion step: force, pressure, temperature, motion, and ion concentration must each be translated into an electrical output that reflects the change being studied. The selected sensor or transducer therefore determines how the original variable enters the measurement system, influencing whether the resulting data can support physiological monitoring, biomaterial characterization, or device assessment.
Real-time feedback depends on converting changing biological or physical conditions into electrical data quickly enough to guide system behavior. Sensors provide the changing signal, while amplification, filtering, digitization, and analysis make that signal usable for control. In bioengineering, this pathway can connect measured conditions with engineered responses in systems such as prosthetics or other biological technologies.
Begin by identifying the variable of interest, such as motion, pressure, temperature, force, or ion concentration. Select a sensor or transducer that converts that variable into an electrical output, then amplify and filter the signal before digitizing it. The resulting data can be analyzed to monitor function, characterize materials, evaluate a device, or control an engineered system.
It is useful when device performance or material behavior must be represented as measurable data. Measurements of force, pressure, temperature, or motion can help characterize how a device or biomaterial responds, while electrical sensing supports systematic analysis rather than relying only on direct observation. These results can inform evaluation of medical devices and the behavior of engineered materials.
In wearable technologies and biosensors, electronic measurement makes changing physiological or chemical conditions available for monitoring and analysis. In prosthetics, measurements of motion or force can provide information relevant to device operation and feedback. Across these applications, the signal-processing chain turns sensor outputs into data that supports physiological assessment, device evaluation, or interaction with an engineered biological system.