WO2012094498A3 - Electromagnetic radiation absorbing surfaces for cloaking three-dimensional objects - Google Patents

Electromagnetic radiation absorbing surfaces for cloaking three-dimensional objects Download PDF

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Publication number
WO2012094498A3
WO2012094498A3 PCT/US2012/020336 US2012020336W WO2012094498A3 WO 2012094498 A3 WO2012094498 A3 WO 2012094498A3 US 2012020336 W US2012020336 W US 2012020336W WO 2012094498 A3 WO2012094498 A3 WO 2012094498A3
Authority
WO
WIPO (PCT)
Prior art keywords
cloaking
electromagnetic radiation
acoustic waves
absorbing
coating
Prior art date
Application number
PCT/US2012/020336
Other languages
French (fr)
Other versions
WO2012094498A2 (en
Inventor
Lingjie Jay Guo
Haofei SHI
Original Assignee
The Regents Of The University Of Michigan
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by The Regents Of The University Of Michigan filed Critical The Regents Of The University Of Michigan
Publication of WO2012094498A2 publication Critical patent/WO2012094498A2/en
Publication of WO2012094498A3 publication Critical patent/WO2012094498A3/en

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00—Screening of apparatus or components against electric or magnetic fields
    • H05K9/0073—Shielding materials
    • H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems

Abstract

An electromagnetic radiation (EM) absorbing surface for cloaking a three-dimensional object is provided, so that the object is rendered invisible from broadband EM and/or acoustic waves. In certain aspects, a coating comprises a plurality of axially shaped microparticles having a high electrical conductivity that are disposed on a substrate, like carbon nanotubes. The microparticles are preferably substantially aligned to have a single vertical orientation to the substrate. The coating is capable of absorbing EM and/or acoustic waves directed at the object and also for absorbing electromagnetic and/or acoustic waves generated by the object. The present disclosure also provides methods of cloaking a three-dimensional object by using such a coating on a surface that shields at least a portion of the 3-D object from a direction of detection.
PCT/US2012/020336 2011-01-07 2012-01-05 Electromagnetic radiation absorbing surfaces for cloaking three-dimensional objects WO2012094498A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201161430792P 2011-01-07 2011-01-07
US61/430,792 2011-01-07

Publications (2)

Publication Number Publication Date
WO2012094498A2 WO2012094498A2 (en) 2012-07-12
WO2012094498A3 true WO2012094498A3 (en) 2012-11-01

Family

ID=46457966

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2012/020336 WO2012094498A2 (en) 2011-01-07 2012-01-05 Electromagnetic radiation absorbing surfaces for cloaking three-dimensional objects

Country Status (1)

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WO (1) WO2012094498A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9413075B2 (en) 2012-06-14 2016-08-09 Globalfoundries Inc. Graphene based structures and methods for broadband electromagnetic radiation absorption at the microwave and terahertz frequencies
DE102018121826A1 (en) * 2018-09-07 2020-03-12 Airbus Defence and Space GmbH Electromagnetic radiation filtering device, aircraft and spacecraft and method of making the device
CN110581365B (en) * 2019-08-23 2021-11-02 西华大学 Dislocation type three-dimensional metamaterial transparent wave absorber
CN113008355B (en) * 2021-03-10 2021-12-28 北京大学 Stealth evaluation method for acoustic cloak
CN113219223B (en) * 2021-03-15 2022-02-01 北京航空航天大学 Totally-enclosed rectangular terahertz darkroom

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5710564A (en) * 1993-06-25 1998-01-20 Nimtz; Guenter System for absorbing electromagnetic waves and method of manufacturing this system
US20080024792A1 (en) * 2006-07-25 2008-01-31 John Pendry Electromagnetic Cloaking Method
US20090114890A1 (en) * 2007-10-03 2009-05-07 Raytheon Company Nanocomposite Coating for Reflection Reduction

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5710564A (en) * 1993-06-25 1998-01-20 Nimtz; Guenter System for absorbing electromagnetic waves and method of manufacturing this system
US20080024792A1 (en) * 2006-07-25 2008-01-31 John Pendry Electromagnetic Cloaking Method
US20090114890A1 (en) * 2007-10-03 2009-05-07 Raytheon Company Nanocomposite Coating for Reflection Reduction

Also Published As

Publication number Publication date
WO2012094498A2 (en) 2012-07-12

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