Millimeter wave absorption by confined acoustic modes in CdSe/CdTe core-shell quantum dots

Tzu Ming Liu, Ja Yu Lu, Chung Chiu Kuo, Yu Chieh Wen, Chih Wei Lai, Meng Ju Yang, Pi Tai Chou, Daniel B. Murray, Lucien Saviot, Chi Kuang Sun

Research output: Contribution to journalArticle

Abstract

Taking advantage of the specific core-shell charge separation structure in the CdSe/CdTe core-shell Type-II quantum dots (QDs), we experimentally observed the resonant-enhanced dipolar interaction between millimeter-wave (MMW) photons and their corresponding (l = 1) confined acoustic phonons. With proper choice of size, the absorption band can be tuned to desired frequency of MMW imaging. Exploiting this characteristic absorption, in a fiber-scanned MMW imaging system, we demonstrated the feasibility of CdSe/CdTe QDs as the contrast agents of MMW imaging.

Original languageEnglish
Article number012039
JournalJournal of Physics: Conference Series
Volume92
Issue number1
DOIs
Publication statusPublished - 2007 Dec 1

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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    Liu, T. M., Lu, J. Y., Kuo, C. C., Wen, Y. C., Lai, C. W., Yang, M. J., Chou, P. T., Murray, D. B., Saviot, L., & Sun, C. K. (2007). Millimeter wave absorption by confined acoustic modes in CdSe/CdTe core-shell quantum dots. Journal of Physics: Conference Series, 92(1), [012039]. https://doi.org/10.1088/1742-6596/92/1/012039