Electrical techniques are experimental or analytical methods that apply controlled electric fields, currents, or potentials to probe, manipulate, or characterize physical, chemical, or biological systems. They encompass approaches such as impedance spectroscopy, voltammetry, electrophysiology, and conductive or dielectric measurements, enabling quantification of parameters like conductivity, permittivity, charge transport, interfacial kinetics, and membrane potentials. These techniques often rely on precise instrumentation for signal generation and detection, including amplifiers, electrodes, and shielding to minimize noise. Electrical techniques are integral in material characterization, sensor development, electrochemical analysis, and the investigation of ion channels, neural activity, and other bioelectrical phenomena.
New research published today has demonstrated that tiny graphene neural probes can be used safely to greatly improve our understanding of the causes of epilepsy.
Bio & Medicine
Dec 22, 2021
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144
Cells can produce unique electrical signals. These signals can be linked to various cancers, such as the breast, lung, liver, brain, pancreas and prostate cancers, meaning that they can be used as indicators for early cancer ...
Bio & Medicine
Nov 22, 2021
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102
Being able to measure the electrical activity of the brain has helped us gain a much better understanding of the brain's processes, functions, and diseases over the past decades. So far, much of this activity has been measured ...
Bio & Medicine
Oct 1, 2021
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116
Bioelectrical sensors on the skin can be used to measure electrical signals in the body, like heart activity and muscle contraction. While that provides valuable information for clinicians, current bioelectrical sensor technology ...
Nanophysics
Sep 28, 2021
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103
Researchers from the technical universities of Delft and Munich have invented a new type of molecular trap that can hold a single protein in place for hours to study its natural behavior—a million times longer than before. ...
Bio & Medicine
Aug 31, 2021
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258
At the simplest of levels, nanopores are (nanometre-sized) holes in an insulating membrane. The hole allows ions to pass through the membrane when a voltage is applied, resulting in a measurable current. When a molecule passes ...
Nanomaterials
Aug 19, 2021
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89
Arrays of metal electrodes are often used in medical procedures that require monitoring or delivering electrical impulses in the body, such as brain surgery and epilepsy mapping. However, the metal and plastic materials that ...
Bio & Medicine
Jun 18, 2021
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151
Bay Area scientists have captured the real-time electrical activity of a beating heart, using a sheet of graphene to record an optical image—almost like a video camera—of the faint electric fields generated by the rhythmic ...
Bio & Medicine
Jun 16, 2021
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1030
