发明名称 |
Composite materials with negative elastic constants |
摘要 |
This invention provides a composite material having a matrix of structural material containing embedded zones of soft elastic material and zones of solid relatively high density material within the soft elastic material. By selecting a particular resonance frequency for the subunits of soft elastic material and solid high density material, frequencies just lower than the resonance frequencies will be unable to propagate through the material and be strongly reflected or absorbed. Such material may be used in the manufacture of filters or shields against particular target frequencies. Subunits having a variety of resonance frequencies may provide a broader range of frequencies that the material may shield.
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申请公布号 |
US6576333(B2) |
申请公布日期 |
2003.06.10 |
申请号 |
US19980054532 |
申请日期 |
1998.04.03 |
申请人 |
THE HONG KONG UNIVERSITY OF SCIENCE & TECHNOLOGY |
发明人 |
SHENG PING;XIAO RONGFU;WEN WEIJIA;LIU ZHENG YOU |
分类号 |
B29C70/60;G10K11/165;(IPC1-7):B32B5/16 |
主分类号 |
B29C70/60 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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