High capacitance of surface-modified 2D titanium
... charge is stored via fast surface redox reactions [3]. In case of EDLCs, capacitance is proportional to the materials' specific surface area, SSA. Therefore carbon-based materials are used since they exhibit high SSAs from 1000 to 2000 m 2·g− 1 , giving capacitances up to 50–80 F·cm − 3 and 150–200 F ...
... charge is stored via fast surface redox reactions [3]. In case of EDLCs, capacitance is proportional to the materials' specific surface area, SSA. Therefore carbon-based materials are used since they exhibit high SSAs from 1000 to 2000 m 2·g− 1 , giving capacitances up to 50–80 F·cm − 3 and 150–200 F ...
Silicon and oxygen, the two most common chemical elements in the
... plants that are used to manufacture optical devices. Silica glass (fused quartz) is used in optics to transmit ultraviolet light and to make laboratory tubing and vessels, as well as fibers employed in sensitive weighing devices. ...
... plants that are used to manufacture optical devices. Silica glass (fused quartz) is used in optics to transmit ultraviolet light and to make laboratory tubing and vessels, as well as fibers employed in sensitive weighing devices. ...
Density-functional band-structure calculations for La-, Y
... It is evident that the smaller unit cell of the phosphorusbased skutterudite structures requires a smaller filling element to achieve a comparable reduction in thermal conductivity to that seen in the larger antimony based materials. In this article we explore the feasibility of filling the CoP3 str ...
... It is evident that the smaller unit cell of the phosphorusbased skutterudite structures requires a smaller filling element to achieve a comparable reduction in thermal conductivity to that seen in the larger antimony based materials. In this article we explore the feasibility of filling the CoP3 str ...
Three-dimensional photonic bandgap materials
... ωn (k). It is crucial to realize that, due to Bloch’s theorem, two states with wavevectors differing by 2π/a represent exactly the same state. Therefore this wavevector k can be confined to the first Brillouin zone (BZ): a region of reciprocal space closer to the origin than to any other reciprocal ...
... ωn (k). It is crucial to realize that, due to Bloch’s theorem, two states with wavevectors differing by 2π/a represent exactly the same state. Therefore this wavevector k can be confined to the first Brillouin zone (BZ): a region of reciprocal space closer to the origin than to any other reciprocal ...
Extraction of electrical mechanisms of low
... slope of the linear region (slope=kBT), are, respectively, 3.13=10y23 Jcm1y2V1y2, 2.51=10y23 Jcm1y2V1y2 and 2.85=10y23 Jcm1y2V1y2 for Fig. 9a, b and c. The b values are smaller than 3.76 and closer to 3.76 than 7.53. It is worth noticing that the experimental b values are smaller than the theoretica ...
... slope of the linear region (slope=kBT), are, respectively, 3.13=10y23 Jcm1y2V1y2, 2.51=10y23 Jcm1y2V1y2 and 2.85=10y23 Jcm1y2V1y2 for Fig. 9a, b and c. The b values are smaller than 3.76 and closer to 3.76 than 7.53. It is worth noticing that the experimental b values are smaller than the theoretica ...
ultrasound action on strength properties of polycrystalline metals
... When 20.338 kHz high-intensity ultrasound was applied to the molten system, a mixing of the melted metal close to the solid-liquid interface and the crucible wall due to cavitation was produced. Near the solid surface, cumulative jets can be generated and the diffusion layer is thinned due to enhanc ...
... When 20.338 kHz high-intensity ultrasound was applied to the molten system, a mixing of the melted metal close to the solid-liquid interface and the crucible wall due to cavitation was produced. Near the solid surface, cumulative jets can be generated and the diffusion layer is thinned due to enhanc ...
Solid
Solid is one of the four fundamental states of matter (the others being liquid, gas, and plasma). It is characterized by structural rigidity and resistance to changes of shape or volume. Unlike a liquid, a solid object does not flow to take on the shape of its container, nor does it expand to fill the entire volume available to it like a gas does. The atoms in a solid are tightly bound to each other, either in a regular geometric lattice (crystalline solids, which include metals and ordinary ice) or irregularly (an amorphous solid such as common window glass).The branch of physics that deals with solids is called solid-state physics, and is the main branch of condensed matter physics (which also includes liquids). Materials science is primarily concerned with the physical and chemical properties of solids. Solid-state chemistry is especially concerned with the synthesis of novel materials, as well as the science of identification and chemical composition.