| 摘要 |
PROBLEM TO BE SOLVED: To provide particles that create permanent tissue markings, including, but not limited to, tattoos that have variable appearance properties; and methods for producing, implanting, altering and removing these variable appearance tissue markings. SOLUTION: Disclosed is an incident electromagnetic wave-retroreflective composition containing a liquid support and a plurality of particles, in which the particles comprise (i) a material having a refractive index of 1.6-2.4, and having (ii) a size about 1 to 10 times the wavelength of electromagnetic waves incident to the particles, and (iii) a shape at least partially retroreflective to electromagnetic waves incident to the particles. COPYRIGHT: (C)2009,JPO&INPIT
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