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Please use this identifier to cite or link to this item: http://hdl.handle.net/1783.1/417
Title: Composite materials with negative elastic constants
Authors: Sheng, Ping
Xiao, Rong-Fu
Wen, Wei-Jia
Zheng, You Liu
Keywords: Resonance frequencies
Filters
Shields
Elastic constants
Issue Date: 10-Jun-2003
Citation: US Patent 6,576,333. Washington, DC: US Patent and Trademark Office, 2003.
Abstract: 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.
Rights: This patent is also available at HKUST Technology Transfer Center Patent Search at <http://patentsearch.ttc.ust.hk/ListPatentsDetail.asp?id=102>
URI: http://hdl.handle.net/1783.1/417
Appears in Collections:PHYS Patents

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