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A material that conducts electricity fairly well but not as well as a conductor is known as aresistor. The most common example of a resistor is a combination of carbon and clay, mixed in a specific ratio to produce a constant, predictable opposition to electric current. All normal conductors ...
M. Chemistry of covalent organic frameworks. Acc. Chem. Res. 48, 3053–3063 (2015). Article CAS Google Scholar Côté, A. P. et al. Porous, crystalline, covalent organic frameworks. Science 310, 1166–1170 (2005). The first example of COFs was described in this study using a ...
To recover the unit cell to its original configuration, a pair of compressive forces needs to be applied to the unit cell to enable it snap back to the close state. Tessellating the unit cell in both horizontal and vertical directions creates a metasurface. Figure 1b shows an example ...
Another example of the energy harvesting in transportation is the prediction of the failure of rail wheel bearings by the wireless communication of piezoelectric sensors that convert the vibration of rolling stock into electrical power [25]. Piezoelectric generators can make use of the in vivo ...
In a different example, the discharge through a resistor of a capacitor held at a DC potential for a while will be well-modeled by the usual exponential equation during the rapidly-changing portion of the discharge curve. During the “long tail” portion of the curve however, the capacitor ...
The ability of electrons to reach the conduction band determines the electrical conductivity of an object. Different substances have different band gap sizes, so some substances require less energy to move electrons between orbitals. For example, conductors have a small band gap, so electrons do not...
Micrometeorites, a possible major source of Earth’s water, are thought to form from explosive dispersal of hydrated chondritic materials during impact events on their parental asteroids. However, this provenance and formation mechanism have yet to be di
In all electrode formulations, there is a conductive additive to improve the electronic conduction. We will describe its role in more detail below but, put simply, the primary purpose of the conductive material is to facilitate better electronic conduction throughout the electrode. Despite the widesp...
Superionic conductors possess liquid-like ionic diffusivity in the solid state, finding wide applicability from electrolytes in energy storage to materials for thermoelectric energy conversion. Type I superionic conductors (for example, AgI, Ag2Se and so on) are defined by a first-order transition to...