▎ 摘 要
(ES1209313-U) NOVELTY - Freeze-dried composition comprises (a) metal powder, where the metal is chosen from gold, silver, platinum and rhodium, (b) graphene, (c) silica, (d) resin, and (e) a biological sample of a subject, where the biological sample is dried sample. USE - The freeze-dried composition is useful as ink of three-dimensional (3D) printer for producing 3D element or 3D figure. The 3D element or 3D figure is 3D reliquary (all claimed). ADVANTAGE - The composition exhibits excellent conductivity.