Tsai C.-Y.Lee D.-S.Tsai Y.-H.Chan B.Luh T.-Y.Chen P.-J.Chen Ping-HeiPING-HEI CHEN2021-10-142021-10-1420040167577Xhttps://scholars.lib.ntu.edu.tw/handle/123456789/584692https://www.scopus.com/inward/record.uri?eid=2-s2.0-1842635989&doi=10.1016%2fj.matlet.2003.12.019&partnerID=40&md5=5c9e2c75845ed63d468c213c68cb52d0Aqueous gold nanoparticles (Au-NPs) without surfactant protection undergo irreversible aggregation upon a cryogenic treatment. However, a cryogenic process on aqueous gold nanoparticle solution containing tannic acid did not lead to nanoparticle aggregation. The tannic acid serves as surfactant to prevent aggregation of gold nanoparticles. In contrast, a reduction in the particle size in this solution containing tannic acid was observed upon the cryogenic treatment with good reproducibility and uniformity. © 2004 Elsevier B.V. All rights reserved.Cryogenic process; Gold nanoparticle; Shrinking; Tannic acid; Trisodium citrateCryogenics; Crystalline materials; Inorganic acids; Nanostructured materials; Particle size analysis; Reduction; Shrinkage; Sodium compounds; Solutions; Spectrum analysis; Surface active agents; Synthesis (chemical); Transmission electron microscopy; Ultraviolet spectrometers; Cryogenic process; Gold nanoparticles; Tannic acids; Trisodium citrate; Goldjournal article10.1016/j.matlet.2003.12.0192-s2.0-1842635989