Characteristics of gadolinium oxide nanoparticles as contrast agents for terahertz imaging

Dong Kyu Lee, Hyeongmun Kim, Taekhoon Kim, Byungkyu Cho, Kwangyeol Lee, Joo Hiuk Son

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


For the application of gadolinium oxide (Gd 2O 3) nanoparticles as terahertz contrast agents, their optical properties in a solvent were studied using terahertz time-domain spectroscopy. The power absorption and refractive index of the samples were measured with various concentrations of nanoparticles. The power absorption was extremely large, as much as three orders of magnitude higher than that of water, so that a few ppms of Gd 2O 3 nanoparticles were distinguished in terms of their power absorption capacity. The results show that the interaction between the terahertz electromagnetic waves and the Gd 2O 3 nanoparticles is strong enough to allow their exploitation as contrast agents for terahertz medical imaging.

Original languageEnglish
Pages (from-to)506-512
Number of pages7
JournalJournal of Infrared, Millimeter, and Terahertz Waves
Issue number4
Publication statusPublished - 2011 Apr


  • Gadolinium oxide
  • Nanoparticle
  • Terahertz imaging
  • Terahertz time-domain spectroscopy

ASJC Scopus subject areas

  • Radiation
  • Instrumentation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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