Touch-sensitive, elastic fibers offer new interface for electronics
Researchers from North Carolina State University have created elastic, touch-sensitive fibers that can interface with electronic devices.
Apr 4, 2017
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28
Engineering
Researchers from North Carolina State University have created elastic, touch-sensitive fibers that can interface with electronic devices.
Apr 4, 2017
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28
Electronics & Semiconductors
In the ongoing quest to make electronic devices ever smaller and more energy efficient, researchers want to bring energy storage directly onto microchips, reducing the losses incurred when power is transported between various ...
May 6, 2024
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84
Consumer & Gadgets
Touch screens on mobile devices can be attacked and manipulated via charging cables and power supply units. This is what researchers at the System Security Lab at TU Darmstadt have discovered together with a Chinese research ...
Jul 20, 2022
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87
Engineering
On the verge of outcompeting current thin-film solar cells, perovskite solar cells seem to embody an ideal solar cell with high efficiency and low cost. However, they have poor long-term stability, which remains a challenge. ...
Apr 5, 2019
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550
Hi Tech & Innovation
(Tech Xplore)—"Capacitive fingerprint sensor including an electrostatic lens" is the title of the patent filed in September 2014.The inventor listed is Jean-Marie Bussat. This is being talked about in this week's tech press ...
Electronics & Semiconductors
Researchers have unveiled an innovative approach to create flexible organic integrated circuits (ICs) devoid of parasitic capacitance. This advancement heralds a substantial enhancement in the dynamic performance and operating ...
Mar 25, 2024
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8
Engineering
Microscale electrochemical energy storage systems with high systemic performance, superior cell number density, tunable capacitance, and output voltage are promising for miniaturized electronics.
Dec 1, 2022
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21
Electronics & Semiconductors
Triboelectric energy is the scientific term for static electricity, or the energy that is created when two surfaces rub against each other. Electrons are exchanged between the two surfaces, charging one of the surfaces after ...
Oct 27, 2022
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81
Electronics & Semiconductors
Australian researchers have discovered that negative capacitance could lower the energy used in electronics and computing, which represents 8 percent of global electricity demand.
Dec 16, 2021
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In electromagnetism and electronics, capacitance is the ability of a capacitor to store energy in an electric field. Capacitance is also a measure of the amount of electric potential energy stored (or separated) for a given electric potential. A common form of energy storage device is a parallel-plate capacitor. In a parallel plate capacitor, capacitance is directly proportional to the surface area of the conductor plates and inversely proportional to the separation distance between the plates. If the charges on the plates are +q and −q, and V gives the voltage between the plates, then the capacitance is given by
The SI unit of capacitance is the farad; 1 farad is 1 coulomb per volt.
The energy (measured in joules) stored in a capacitor is equal to the work done to charge it. Consider a capacitor of capacitance C, holding a charge +q on one plate and −q on the other. Moving a small element of charge dq from one plate to the other against the potential difference V = q/C requires the work dW:
where W is the work measured in joules, q is the charge measured in coulombs and C is the capacitance, measured in farads.
The energy stored in a capacitor is found by integrating this equation. Starting with an uncharged capacitance (q = 0) and moving charge from one plate to the other until the plates have charge +Q and −Q requires the work W:
This text uses material from Wikipedia, licensed under CC BY-SA