A negative dielectric constant in nano-particle materials under an electric field at very low frequencies

C. W. Chu; F. Chen; J. Shulman; S. Tsui; Y. Y. Xue; W. Wen; P. Sheng

doi:10.1117/12.626267

A negative dielectric constant in nano-particle materials under an electric field at very low frequencies

C. W. Chu, F. Chen, J. Shulman, S. Tsui, Y. Y. Xue, W. Wen, P. Sheng

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研究成果: Conference article › 同行評審

23 引文斯高帕斯（Scopus）

摘要

The significance of a negative dielectric constant has long been recognized. We report here the observation of a field-induced large negative dielectric constant of aggregates of oxide nano-particles at frequencies below ∼1 Hz at room temperature. The accompanying induced charge detected opposes the electric field applied in the field-induced negative dielectric constant state. A possible collective effect in the nano-particle aggregates is proposed to account for the observations. Materials with a negative dielectric constant are expected to provide an attraction between similar charges and unusual scattering to electromagnetic waves with possible profound implications for high temperature superconductivity and communications.

原文	English
文章編號	59320X
頁（從 - 到）	1-10
頁數	10
期刊	Proceedings of SPIE - The International Society for Optical Engineering
卷	5932
DOIs	https://doi.org/10.1117/12.626267
出版狀態	Published - 2005
事件	Strongly Correlated Electron Materials: Physics and Nanoengineering - San Diego, CA, United States 持續時間: 2005 7月 31 → 2005 8月 4

All Science Journal Classification (ASJC) codes

電子、光磁材料
凝聚態物理學
電腦科學應用
應用數學
電氣與電子工程

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AU - Chu, C. W.

AU - Chen, F.

AU - Shulman, J.

AU - Tsui, S.

AU - Xue, Y. Y.

AU - Wen, W.

AU - Sheng, P.

PY - 2005

Y1 - 2005

N2 - The significance of a negative dielectric constant has long been recognized. We report here the observation of a field-induced large negative dielectric constant of aggregates of oxide nano-particles at frequencies below ∼1 Hz at room temperature. The accompanying induced charge detected opposes the electric field applied in the field-induced negative dielectric constant state. A possible collective effect in the nano-particle aggregates is proposed to account for the observations. Materials with a negative dielectric constant are expected to provide an attraction between similar charges and unusual scattering to electromagnetic waves with possible profound implications for high temperature superconductivity and communications.

AB - The significance of a negative dielectric constant has long been recognized. We report here the observation of a field-induced large negative dielectric constant of aggregates of oxide nano-particles at frequencies below ∼1 Hz at room temperature. The accompanying induced charge detected opposes the electric field applied in the field-induced negative dielectric constant state. A possible collective effect in the nano-particle aggregates is proposed to account for the observations. Materials with a negative dielectric constant are expected to provide an attraction between similar charges and unusual scattering to electromagnetic waves with possible profound implications for high temperature superconductivity and communications.

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JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

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T2 - Strongly Correlated Electron Materials: Physics and Nanoengineering

Y2 - 31 July 2005 through 4 August 2005

ER -

A negative dielectric constant in nano-particle materials under an electric field at very low frequencies

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