sound travels fastest in solids, liquids or gases.
where does sound travel fastest solid liquid or gas?
gases
the most commonly used interfacial polymerization methods fall into 3 broad types of interfaces: liquid-solid interfaces, liquid-liquid interfaces, and liquid-in-liquid emulsion interfaces. in the liquid-liquid and liquid-in-liquid emulsion interfaces, either one or both liquid phases may contain monomers. there are also other interface categories, rarely used, including liquid-gas, solid-gas, and solid-solid.
interfacial polymerization
bullet::::- the solid-liquid interface must be well-defined crystallographically in order to produce highly directional growth of nanowires. it is also important to point out that the solid-liquid interface cannot, however, be completely smooth. furthermore, if the solid liquid interface was atomically smooth, atoms near the interface trying to attach to the solid would have no place to attach to until a new island nucleates (atoms attach at step ledges), leading to an extremely slow growth process. therefore, “rough” solid surfaces, or surfaces containing a large number of surface atomic steps (ideally 1 atom wide, for large growth rates) are needed for deposited atoms to attach and nanowire growth to proceed.
vapor–liquid–solid method