metamaterials - Robuta Search

https://pure.psu.edu/en/publications/low-loss-impedance-matched-optical-metamaterials-with-zero-phase-/ Low-loss impedance-matched optical metamaterials with zero-phase delay - Penn State https://eprints.soton.ac.uk/340470/ Fano resonances and collective effects in metamaterials - ePrints Soton fano resonances collective effects metamaterials https://www.southampton.ac.uk/research/projects/topological-transmission-line-metamaterials-for-deep-subwavelength-imaging Topological Transmission-line Metamaterials for Deep-subwavelength Imaging | University of... Topological Transmission-line Metamaterials for Deep-subwavelength Imaging. transmission line topological metamaterials deep imaging https://meetings-archive.aps.org/mar/2022/d21/5/ Inverse design of nonlinear response in flexible mechanical metamaterials - Virtual Undergraduate... From wearable devices and energy-absorbing systems to footwear and soft robots, many applications would benefit from the inverse design of materials with a targ inverse design nonlinear response https://discovery.fiu.edu/display/pub237873 Experimental investigation of magnetic Purcell factor in wire metamaterials experimental investigation magnetic purcell factor https://www.sciencedaily.com/releases/2012/04/120424121748.htm Improving on the amazing: Scientists seek new conductors for metamaterials | ScienceDaily Scientists have designed a method to evaluate different conductors for use in metamaterial structures, which are engineered to exhibit properties not possible... on the improving amazing scientists https://www.frontiersin.org/journals/materials/articles/10.3389/fmats.2023.1342908/full Frontiers | Editorial: Acoustic and mechanical metamaterials for various applications - volume II Fuyin Ma (School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 71009, China) Metamaterials are homogenization wave-manipulation materia... various applications frontiers editorial acoustic mechanical https://meetings-archive.aps.org/mar/2012/j18/1/ Large Area 3D Negative Index Metamaterials Formed by Printing - Instrumentation of Molecular... Negative index metamaterials (NIMS) are man-made structures with values of permittivity and permeability that are simultaneously negative over some range of fre large area https://meetings-archive.aps.org/nes/2011/a1/2/ Taming Light and Electrons with Metamaterials - Welcome In recent years, in my group we have been working on various aspects of metamaterials and plasmonic nano-optics. We have introduced and been developing the conc taming light electrons metamaterials welcome https://vtechworks.lib.vt.edu/items/e03db324-fc3a-4da6-aa6f-8a8fe5f96bc3 Analytical and Spectro-Spatial Analyses of Nonlinear Metamaterials for Vibration Control, Energy... This dissertation investigates the nonlinear wave propagation phenomena in nonlinear metamaterials with nonlinear chains and nonlinear resonators using... https://dukespace.lib.duke.edu/items/42f2d962-f0da-426e-b01d-b42603f37015 Bi-layer metamaterials as fully functional near-perfect infrared absorbers fully functional bi layer metamaterials near https://researchportalplus.anu.edu.au/en/publications/roadmap-on-electromagnetic-metamaterials-and-metasurfaces/ Roadmap on electromagnetic metamaterials and metasurfaces - The Australian National University the australian roadmap electromagnetic metamaterials metasurfaces https://cris.tau.ac.il/en/activities/geometry-combinatorics-and-topology-of-personalized-mechanical-me/ Geometry, Combinatorics and Topology of Personalized Mechanical Metamaterials - Tel Aviv University tel aviv geometry combinatorics topology https://epjam.edp-open.org/ EPJ Applied Metamaterials EPJ Applied Metamaterials epj applied metamaterials https://par.nsf.gov/biblio/10299020 Highly Efficient Anisotropic Chiral Plasmonic Metamaterials for Polarization Conversion and... This page contains metadata information for the record with PAR ID 10299020 highly efficient anisotropic chiral plasmonic https://bsac.berkeley.edu/publications/eliminating-structural-defects-large-area-mechanical-metamaterials-hot-lithography Eliminating Structural Defects in Large Area Mechanical Metamaterials via Hot Lithography in... structural defects large area https://scholars.duke.edu/publication/767150 Scholars@Duke publication: Theory and design of practical metamaterials for acoustic cloaking and design https://par.nsf.gov/biblio/10334445-multiband-homogenization-metamaterials-real-space-higher-order-nonlocal-models-scattering-external-surfaces Multiband homogenization of metamaterials in real-space: Higher-order nonlocal models and... This page contains metadata information for the record with PAR ID 10334445 real space https://meetings.aps.org/Meeting/MAR21/Session/X06.1 APS -APS March Meeting 2021 - Event - Programming Sequences in Multistable Mechanical Metamaterials aps march meeting event programming https://meetings-archive.aps.org/mar/2018/c12/ Nanostructures and Metamaterials 3 - DPOLY Short Course: The Gel, Elastomer, and Network Experience... Archive of meeting recordings and transcripts short course https://metamaterials.duke.edu/news/kymeta-sharp-partnership Kymeta-Sharp partnership focuses on satellite internet antennas | Center for Metamaterials and... Kymeta working with display manufacturer to create and produce metamaterial antennas for commercial use. sharp partnership satellite internet https://docs.lib.purdue.edu/nanopub/1577/ "Tunable hyperbolic metamaterials utilizing phase change heterostructur" by Harish N.S.... We present a metal-free tunable anisotropic metamaterial where the iso-frequency surface is tuned from elliptical to hyperbolic dispersion by exploiting the... phase change tunable hyperbolic metamaterials utilizing https://meetings-archive.aps.org/mar/2016/c23/8/ Semiconductor-based mid-IR metamaterials: experimental and theoretical studies - Towards a complete... All-semiconductor (III-V) metamaterials (MTM) for the infrared (IR) can be applied to superlensing and optical cloaking [1]. 1-D metallic-semiconductor superlat https://kth.diva-portal.org/smash/record.jsf?faces-redirect=true&language=sv&searchType=SIMPLE&query=&af=%5B%5D&aq=%5B%5B%5D%5D&aq2=%5B%5B%5D%5D&aqe=%5B%5D&pid=diva2%3A1944112&noOfRows=50&sortOrder=author_sort_asc&sortOrder2=title_sort_asc&onlyFullText=false&sf=all Inverse design of lattice metamaterials for fully anisotropic elastic constants: A data-driven and... https://pubs.rsc.org/en/Content/ArticleLanding/2026/MH/D6MH00089D Designing aperiodic metamaterials using mechanical neural networks - Materials Horizons (RSC... Designing aperiodic metamaterials that accurately achieve multiple behaviours is often not possible due to the enormity of the complex factors that need to be... neural networks designing aperiodic metamaterials using https://experts.colorado.edu/display/pubid_71567 Damped Phononic Crystals and Metamaterials | CU Experts | CU Boulder damped crystals metamaterials cu experts https://www.frontiersin.org/journals/materials/sections/metamaterials/for-authors/why-submit Frontiers in Materials | Metamaterials Explore open access research on metamaterials design, unusual properties, wave manipulation and advanced material functionalities. frontiers materials https://researchportalplus.anu.edu.au/en/publications/spontaneous-emission-enhancement-in-metal-dielectric-metamaterial/ Spontaneous emission enhancement in metal-dielectric metamaterials - The Australian National... the australian spontaneous emission enhancement metal https://lakeslab.ep.wisc.edu/ChiralMetamaterials.html Chiral metamaterials Elastic materials that exhibit chirality, also known as hemitropy or noncentrosymmetry are describable by a generalized Cosserat continuum. Their tensor... chiral metamaterials https://physicstoday.aip.org/features/biological-tissues-as-mechanical-metamaterials Biological tissues as mechanical metamaterials - Physics Today Oct 8, 2025 - How can researchers geometrically tune the extent to which a material embodies a stiff or flexible structure? biological tissues mechanical metamaterials physics https://publikationen.bibliothek.kit.edu/1000072907 High-strength, light-weight mechanical metamaterials based on ... high strength light weight mechanical metamaterials based https://container.imm.cnr.it/publications/liquid-crystal-tunable-fishnet-terahertz-metamaterials Liquid-crystal tunable fishnet terahertz metamaterials | IMM Container liquid crystal tunable fishnet terahertz metamaterials https://mindlab.andrew.cmu.edu/research/bio-inspired-metamaterials MIND Lab @ CMU - Bio-inspired metamaterials Details about this research trust will be added shortly. To learn more about this research, check out our latest publications. mind lab cmu bio inspired metamaterials https://metamaterials.duke.edu/news/duke-cloak-wallace-and-gromit Duke Cloak on Wallace and Gromit | Center for Metamaterials and Integrated Plasmonics The Duke "invisibility cloak" will be featured on Wallace and Gromit's World of Invention, a new BBC series highlighting invention. Sir John Pendry is... wallace and gromit center for duke cloak https://forge.engineering.asu.edu/furiproject/utilizing-3d-acoustic-properties-of-acoustic-metamaterials-to-make-atmospheric-water-harvesting-more-efficient/ Utilizing 3D Acoustic Properties of Acoustic Metamaterials to Make Atmospheric Water Harvesting... Apr 25, 2025 - Water scarcity is the result of dry climates and remote regions across the globe. Atmospheric water harvesting is the most common solution to this problem.... acoustic properties to make utilizing https://www.birmingham.ac.uk/research/centres-institutes/research-in-physics-and-astronomy/quantum-matter-and-photonics/metamaterials-and-nanophotonics Metamaterials and Nanophotonics - University of Birmingham Our mission is to predict and measure how light and matter interact on a scale hidden to most: shorter than a single wavelength of light. university of metamaterials nanophotonics birmingham https://eprints.soton.ac.uk/343060/ Nanostructured photonic metamaterials: functionalities underpinned by metamolecular interactions -... photonic metamaterials functionalities interactions https://spiral.imperial.ac.uk/entities/publication/062a875f-ea32-43f5-8581-4450f22ec70e Ultra low-loss super-resolution with extremely anisotropic semiconductor metamaterials We investigate the mechanisms for the reduction of losses in doped semiconductor multilayers used for the construction of uniaxial metamaterials and show that... super resolution ultra low loss extremely https://www.birmingham.ac.uk/research/centres-institutes/research-in-physics-and-astronomy/quantum-matter-and-photonics/metamaterials-and-nanophotonics/metamaterials-and-nanophotonics-seminars Seminars - Metamaterials research centre - University of Birmingham We regularly host seminars on a range of topics relating to our metamaterials research. research centre university of seminars metamaterials birmingham https://researchportalplus.anu.edu.au/en/publications/multiphase-lattice-metamaterials-with-enhanced-mechanical-perform/fingerprints/ Multiphase lattice metamaterials with enhanced mechanical performance - Fingerprint - The... mechanical performance multiphase lattice metamaterials enhanced https://meetings.aps.org/Meeting/MAR23/Session/T23.2 APS -2023 APS March Meeting - Event - Transition Waves in Multistable Mechanical Metamaterials... march meeting aps event https://meetings-archive.aps.org/ses/2010/gb/4/ Quantum transport in carbon nanorings for metamaterials applications - Registration (4:00-6:00PM) Central theme of this theoretical study is quantum transport on carbon nanoring surfaces under microwave illumination and the transmission of electromagnetic en https://meetings-archive.aps.org/smt/2025/mar-g63/ Activity Meets Elasticity: from Living Materials to Metamaterials - APS Global Physics Summit 2025 Archive of meeting recordings and transcripts aps global physics summit https://infoscience.epfl.ch/entities/publication/238bf9ff-e64c-4240-a43c-be9bca03b49a Non-Hermitian metamaterials for light and sound for light non metamaterials sound https://eprints.soton.ac.uk/70958/ Nano metamaterials and photonic gratings by nanoimprint and hot embossing - ePrints Soton nano metamaterials photonic gratings https://essay.utwente.nl/essays/93486 Development of Metamaterials for a Custom-fit Bicycle Helmet Liner Cyclists are still one of the most vulnerable road users and have a considerable higher fatality rate than other road users. Therefore, the bicycle helmet was... for a custom fit bicycle helmet development metamaterials https://nanolab.phys.msu.ru/en/user User account | Laboratory of Nanophotonics & Metamaterials user account laboratory nanophotonics metamaterials https://www.sciencedaily.com/releases/2015/01/150122170003.htm Scientists 'bend' elastic waves with new metamaterials that could have commercial applications |... Sound waves passing through the air, objects that break a body of water and cause ripples, or shockwaves from earthquakes all are considered 'elastic' waves.... https://yorkspace.library.yorku.ca/items/8d18fc5f-3029-40d2-be21-51762aee3c7f/full Effective Mechanical Properties of 3D Structural Metamaterials Recent advances in fabrication techniques have enabled the creation of novel materials with enhanced mechanical properties commonly known as metamaterials.... mechanical properties effective structural metamaterials https://nanolab.phys.msu.ru/en/node/2831 Anna Popkova | Laboratory of Nanophotonics & Metamaterials anna laboratory nanophotonics metamaterials https://metamaterials.duke.edu/news/2014-kavli-prize-nanoscience 2014 Kavli Prize in Nanoscience | Center for Metamaterials and Integrated Plasmonics The 2014 Kavli Prize in Nanoscience was awarded to Sir John Pendry, Thomas Ebbesen and Stefan Hell. center for kavli prize nanoscience https://pure.psu.edu/en/publications/nonlinear-imaging-and-spectroscopy-of-chiral-metamaterials-2/ Nonlinear imaging and spectroscopy of chiral metamaterials - Penn State nonlinear imaging spectroscopy chiral metamaterials https://www.aph.kit.edu/wegener/english/21_847.php KIT - APH - AG Wegener Staff - Three-dimensional poroelastic metamaterials with extremely negative... three dimensional https://padillalab.pratt.duke.edu/research/metamaterials Metamaterials | Padilla Lab metamaterials padilla lab https://silver.neep.wisc.edu/~lakes/CmpMetaBook.html Composites and Metamaterials book composites and metamaterials book composites metamaterials book https://repository.lib.ncsu.edu/items/cac0af48-e847-4197-8bcb-36b22df57f6b Reconfigurable Three-dimensional Modular Kirigami Based Metamaterials and Structures: Science and... three dimensional modular kirigami based metamaterials https://www.lbf.fraunhofer.de/en/projects/geco-thermal-management-metamaterials-aircraft-galleys.html GECO - Holistic thermal management and metamaterials for aircraft galleys - Fraunhofer LBF Holistic thermal management and metamaterials for aircraft galleys thermal management geco holistic https://scholars.duke.edu/publication/960617 Scholars@Duke publication: Tunable active acoustic metamaterials scholars duke publication tunable active https://www.img.ufl.edu/publication/2195/wireless-power-transfer-systems-using-metamaterials-review Wireless Power Transfer Systems Using Metamaterials: A Review | Interdisciplinary Microsystems... wireless power transfer systems using metamaterials review https://www.peaknano.com/ Peak Nano | NanoPlex Metamaterials for Peak Performance Jul 7, 2025 - Peak Nano’s NanoPlex™ nanolayered films and optics enhance performance across the power grid, fusion, EVs, aerospace, defense, and other critical industries. peak nano metamaterials performance https://meetings-archive.aps.org/dpp/2010/cm10/5/ High-Power Microwave Metamaterials for Phased-Array, anti-HPM, and Pulse Shaping Applications - The... We present a class of metamaterials capable of operating under extremely high power microwave (HPM) fields. The proposed metamaterials are in the form of period https://meetings.aps.org/Meeting/MAR24/Session/W35.5 APS -2024 APS March Meeting - Event - Chaotic Motion in Multistable Mechanical Metamaterials under... march meeting https://research-portal.st-andrews.ac.uk/en/publications/the-2026-active-metamaterials-roadmap/ The 2026 active metamaterials roadmap - University of St Andrews Research Portal university of st andrews active metamaterials roadmap https://www.kcl.ac.uk/news/kings-part-of-pioneering-hub-to-advance-cutting-edge-metamaterials King's part of pioneering hub to advance cutting-edge metamaterials | King's College London MetaHUB will develop new forms of engineered materials for use in everything from green energy to innovative healthcare https://silver.neep.wisc.edu/~lakes/Metamaterials.html Metamaterials Extreme or negative values of material properties including Poisson's ratio, viscoelastic damping, Young's modulus, coefficient of thermal expansion, truss... metamaterials https://metamaterials.duke.edu/news/science-podcast-graduate-student-john-hunt Science Podcast with Graduate Student John Hunt | Center for Metamaterials and Integrated Plasmonics In a podcast with Science Magazine reporter Kerry Klein asks John Hunt to describe the innovative imaging tool for taking higher-efficiency microwave images... https://meetings.aps.org/Meeting/MAR16/Session/K40.1 APS -APS March Meeting 2016 - Event - Combinatorial Mechanical Metamaterials aps march meeting event combinatorial mechanical metamaterials https://eprints.soton.ac.uk/382417/ Nanostructured metamaterials - ePrints Soton metamaterials eprints soton https://researchportalplus.anu.edu.au/en/publications/photosensitive-srr-metamaterials/fingerprints/ Photosensitive SRR-metamaterials - Fingerprint - The Australian National University the australian photosensitive srr metamaterials fingerprint https://metamaterials.duke.edu/news/new-prototype-gigapixel-camera-creates-super-hi-res-photos New Prototype Gigapixel Camera Creates Super Hi-Res Photos | Center for Metamaterials and... A team of Duke engineers used one of the most powerful cameras ever developed Sunday to produce a photograph of the university's graduation ceremony with 100... hi res photos https://eprints.soton.ac.uk/340462/ The road ahead for nanophotonics: Active controllable and quantum metamaterials - ePrints Soton the road ahead https://iop.uva.nl/content/news/2024/01/steering-fracture-with-metamaterials.html?origin=mWWdkje3RTSAJTpIh3axag Steering Fracture with Metamaterials - IoP - University of Amsterdam Jan 9, 2024 - A consortium led by Corentin Coulais (UvA Institute of Physics) has received an NWO key enabling technology grant for a study on the way in which metamaterials... university of steering fracture metamaterials iop https://scholars.duke.edu/publication/767157 Scholars@Duke publication: Zero loss magnetic metamaterials using powered active unit cells. https://events.manchester.ac.uk/event/event:m1c9-lgfbk3fe-qmaq61/phononics-2023-6th-international-conference-on-phononic-crystalsmetamaterialsmetasurfaces-phonon-transport-topological-phononics Phononics 2023: 6th International Conference on Phononic Crystals/Metamaterials/Metasurfaces,... international conference crystals metamaterials metasurfaces https://cordis.europa.eu/project/id/841781/reporting/it Examining the use of Metamaterials for acoustic applications | H2020 | CORDIS | Commissione europea Latest report summary the use for acoustic https://eprints.soton.ac.uk/341551/ Demonstrating elusive toroidal dipolar response in metamaterials - ePrints Soton demonstrating elusive toroidal response metamaterials https://cordis.europa.eu/project/id/101087368/results/de Nanohelicoid metamaterials templated by cellulose nanocrystals with end-tethered polymers |... Deliverables, publications, datasets, software, exploitable results metamaterials templated cellulose nanocrystals end https://phys.washington.edu/events/2018-05-31/origami-and-topology-two-powerful-ingredients-designing-mechanical-metamaterials Origami and Topology Two Powerful Ingredients for Designing Mechanical Metamaterials | Department... Mechanical metamaterials are emerging as an enabling technology for manipulating mechanical energy flow at will. The unique mechanical properties of these... origami topology two powerful https://shop.elsevier.com/books/advances-in-crystals-and-elastic-metamaterials-part-1/hussein/978-0-12-815100-6 Advances in Crystals and Elastic Metamaterials, Part 1, Volume 51 - 1st Edition | Elsevier Shop https://eprints.soton.ac.uk/375906/ Tunable liquid crystal-based metamaterials for photonic applications - ePrints Soton liquid crystal tunable based metamaterials photonic https://metamaterials.duke.edu/news/quantitative-characterization-nonlinear-metamaterials Quantitative characterization of nonlinear metamaterials | Center for Metamaterials and Integrated... In a paper published in Applied Physics Letters, Larouche et al. present the first quantitative characterization of nonlinear metamaterials. Using an approach... center for quantitative characterization nonlinear metamaterials https://meetings.aps.org/Meeting/MAR14/Session/L48.2 APS -APS March Meeting 2014 - Event - Engineering vacuum and thermal fluctuations with metamaterials aps march meeting event engineering https://summerschooldresden.de/index.html DCMS DDc International Summer School 2026: Designing Metamaterials: From Digital Models to Additive... Innovative materials are one of the key technologies for keeping products and industrial processes economically competitive and ecologically sustainable. The... international summer school https://researchportalplus.anu.edu.au/en/publications/substrate-induced-bianisotropy-in-metamaterials/ Substrate-induced bianisotropy in metamaterials - The Australian National University the australian substrate induced metamaterials national https://researchportalplus.anu.edu.au/en/publications/tilted-response-of-fishnet-photonic-metamaterials-at-near-infrare/ Tilted response of fishnet photonic metamaterials at near-infrared wavelengths - The Australian... https://cordis.europa.eu/project/id/101072560/results/de Glide-symmetric mEtamaterials for iNnovative radIo-frequency commUnication and Sensing (GENIUS) |... Deliverables, publications, datasets, software, exploitable results radio frequency glide symmetric metamaterials innovative https://infoscience.epfl.ch/entities/event/d7dad431-ce77-4ffc-a55d-5bd0b9f12cbb META'14, The 5th Int. Conf. on Metamaterials, Photonics Crystal and Plasmonics https://meetings-archive.aps.org/apr/2021/y20/6/ Studies of a Wire Array Metamaterials for a Tunable Plasmonic Haloscope - Workshop on Searches for... The microwave cavity experiment based on the resonant conversion of axions to photons in a magnetic field proposed by Sikivie in 1983 has provided the strongest https://spiral.imperial.ac.uk/entities/publication/884eac96-caf7-496f-9070-25d68ea4151d Unravelling the optical responses of nanoplasmonic mirror-on-mirror metamaterials. Mirror-on-mirror platforms based on arrays of metallic nanoparticles, arranged top-down or self-assembled on a thin metallic film, have interesting optical... the optical unravelling responses mirror metamaterials https://experts.colorado.edu/display/pubid_262875 TOPOLOGY OPTIMIZATION OF NONLINEAR METAMATERIALS | CU Experts | CU Boulder topology optimization nonlinear metamaterials cu experts https://collaborate.princeton.edu/en/publications/triclinic-metamaterials-by-tristable-origami-with-reprogrammable-/fingerprints/ Triclinic Metamaterials by Tristable Origami with Reprogrammable Frustration - Fingerprint -... metamaterials origami frustration fingerprint https://nanolab.phys.msu.ru/en/content/laboratory-seminar-june-1 Laboratory seminar on June, 1 | Laboratory of Nanophotonics & Metamaterials laboratory seminar june nanophotonics metamaterials https://pure.psu.edu/en/publications/loss-free-and-active-optical-negative-index-metamaterials/ Loss-free and active optical negative-index metamaterials - Penn State loss free active optical negative https://www.frontiersin.org/research-topics/33662/advanced-terahertz-spectrum-and-metamaterials-for-biochemical-sensing-and-detection/magazine Advanced Terahertz Spectrum and Metamaterials for Biochemical Sensing and Detection | Frontiers... The terahertz (THz) wave spectrum (0.1-10 THz) is located in between microwaves and infrared radiation. Due to its nonionizing characteristics and its... advanced terahertz spectrum metamaterials biochemical https://collaborate.princeton.edu/en/publications/negative-refraction-in-mid-infrared-semiconductor-metamaterials-2/ Negative refraction in mid-infrared semiconductor metamaterials - Princeton University negative refraction mid infrared semiconductor https://kth.diva-portal.org/smash/record.jsf?pid=diva2%3A1944112 Inverse design of lattice metamaterials for fully anisotropic elastic constants: A data-driven and... https://www.kcl.ac.uk/professional-education/catalogue/photonics-and-metamaterials Photonics and Metamaterials | King's College London Develop a comprehensive overview of theoretical and practical aspects of major modern photonic technologies, with special emphasis on novel trends and... photonics metamaterials king college london https://lakeslab.ep.wisc.edu/Metamaterials.html Metamaterials Extreme or negative values of material properties including Poisson's ratio, viscoelastic damping, Young's modulus, coefficient of thermal expansion, truss... metamaterials https://top.physik.hu-berlin.de/publications/isolated-metaatoms-photonic-metamaterials-evolution-plasmonic-near-field From isolated metaatoms to photonic metamaterials: evolution of the plasmonic near-field |... Metamaterials are artificial media which can provide optical properties not available from natural materials. These properties often result from the resonant... https://cordis.europa.eu/project/id/723367/fr AdvancEd aicRaft-noIse-AlLeviation devIceS using meTamaterials | AERIALIST | Projet | Fiche... AERIALIST aims at the disclosure of the potential of metamaterials to envisage innovative devices for the mitigation of the civil aviation noise. Goal of... advanced aicraft noise devices using