| 摘要 |
<p>There is provided a labeling material capable of absorbing infrared light which comprises a plurality of polymeric microparticles. Each of the microparticles has a diameter of less than 500 νm and incorporates an infrared absorbing dye. The infrared absorbing dye absorbs radiation at a wavelength of from about 770 nm to about 10 νm.</p> |
