有和无外加电场时超导微粒和普通微粒的球形团聚
Spherical agglomeration of superconducting and normal microparticles with and without applied electric field
摘要：
据报道，R。Tao和他的同事认为，在强电场的存在下，超导微粒组装成宏观尺寸的球。这一发现对于理解超导体的基本物理学具有潜在的重要意义。然而，我们在这里报告的实验研究结果表明，（i）球的形成也发生在没有施加电场，（ii）的现象也发生在超导转变温度以上的温度，和（iii）它也可以发生在非超导材料。这种现象的可能起源进行了讨论。
英文摘要：
It was reported by R. Tao and coworkers that in the presence of a strong electric field superconducting microparticles assemble into balls of macroscopic dimensions. Such a finding has potentially important implications for the understanding of the fundamental physics of superconductors. However, we report here the results of experimental studies showing that (i) ball formation also occurs in the absence of an applied electric field, (ii) the phenomenon also occurs at temperatures above the superconducting transition temperature, and (iii) it can also occur for non-superconducting materials. Possible origins of the phenomenon are discussed.
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