Patent ID: 9562993
Date: 2017-02-07
CPC Classifications: B29D,G02B

Claim:
1. A structure comprising a plurality of core-shell particles, each core-shell particle comprising (1) a shell and (2) a core particle contained in the shell, wherein, in at least some of the plurality of the core-shell particles, the core particles have the same core diameter and the shells have a different shell thickness, and wherein a shape of a frequency distribution of the number of the core-shell particles with respect to the shell thickness is similar to a shape of a frequency distribution of the number of the core-shell particles with respect to the distance between the core particles, wherein the frequency distribution of the number of the core-shell particles with respect to the distance between the core particles is such that: (a) in a region smaller than a distance between the core particles which corresponds to a peak value of the frequency, the frequency becomes small as a value of distance between the core particles becomes small, and in a region smaller than the distance between the core particles at which the frequency becomes zero first, the frequency is zero; and (b) in a region larger than a distance between the core particles which corresponds to a peak value of the frequency, the frequency becomes small as the value of distance between the core particles becomes large, and in a region larger than the distance between the core particles at which the frequency becomes zero first, the frequency is zero.