论文标题
钒二氧化物球散射中的热磁滞
Thermal hysteresis in scattering by vanadium-dioxide spheres
论文作者
论文摘要
二氧化钒（VO2）从纯粹的单智性转变为纯粹的四方，从58摄氏度加热到72°C，转化是可逆但滞后的。在电磁上，如果自由空间波长小于1100 nm，则VO2从耗散介电介电转换为另一个耗散电介质，但如果自由空间波长超过1100 Nm，则从耗散介电（或VICE）到等离子金属（或VICE FERSA）。计算VO2球体的灭绝，总散射，吸收，辐射压力，后散射和前向散射的效率，我们发现（i）（i）前散射，后射击，后射击和吸收效率的前散射效率的明确标志自由空间波长超过1100 nm的散射和吸收效率。当四方VO2是等离子体金属时，真空和无效的绝对属性出现在58°C和72°C之间，一次在加热分支上，一次在热滞后的冷却分支上。但是，六个效率均未显示两种绝对属性之间的显着差异。
Vanadium dioxide (VO2) transforms from purely monoclinic to purely tetragonal on being heated from 58 deg C to 72 deg C, the transformation being reversible but hysteretic. Electromagnetically, VO2 transforms from a dissipative dielectric to another dissipative dielectric if the free-space wavelength is less than 1100 nm, but from a dissipative dielectric to a plasmonic metal (or vice versa) if the free-space wavelength exceeds 1100 nm. Calculating the extinction, total scattering, absorption, radiation-pressure, back-scattering, and forward-scattering efficiencies of a VO2 sphere, we found clear signatures of thermal hysteresis in (i) the forward-scattering, back-scattering, and absorption efficiencies for free-space wavelength less than 1100 nm, and (ii) the forward-scattering, back-scattering, total scattering, and absorption efficiencies for free-space wavelength more than 1100 nm. Vacuum and null-permittivity quasistates occur between 58 deg C and 72 deg C, when tetragonal VO2 is a plasmonic metal, once each on the heating branch and once each on the cooling branch of thermal hysteresis. But none of the six efficiencies show significant differences between the two quasistates.
