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Kim H, Gueddida A, Wang Z, Djafari-Rouhani B, Fytas G, Furst EM. Tunable Hypersonic Bandgap Formation in Anisotropic Crystals of Dumbbell Nanoparticles. ACS NANO 2023; 17:19224-19231. [PMID: 37756140 PMCID: PMC10569095 DOI: 10.1021/acsnano.3c05750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Accepted: 09/20/2023] [Indexed: 09/29/2023]
Abstract
Phononic materials exhibit mechanical properties that alter the propagation of acoustic waves and are widely useful for metamaterials. To fabricate acoustic materials with phononic bandgaps, colloidal nanoparticles and their assemblies allow access to various crystallinities in the submicrometer scale. We fabricated anisotropic crystals with dumbbell-shaped nanoparticles via field-directed self-assembly. Brillouin light spectroscopy detected the formation of direction-dependent hypersonic phononic bandgaps that scale with the lattice parameters. In addition, the local resonances of the constituent nanoparticles enable metamaterial behavior by opening hybridization gaps in disordered structures. Unexpectedly, this bandgap frequency is robust to changes in the dumbbell aspect ratio. Overall, this study provides a structure-property relationship for designing anisotropic phononic materials with targeted phononic bandgaps.
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Affiliation(s)
- Hojin Kim
- Department
of Chemical & Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Abdellatif Gueddida
- Institut
d’Electronique, de Microélectronique et de Nanotechnologie
(IEMN), UMR-CNRS 8520, Département de Physique, Université de Lille, F-59655, Villeneuve d’Ascq, France
| | - Zuyuan Wang
- Max
Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Bahram Djafari-Rouhani
- Institut
d’Electronique, de Microélectronique et de Nanotechnologie
(IEMN), UMR-CNRS 8520, Département de Physique, Université de Lille, F-59655, Villeneuve d’Ascq, France
| | - George Fytas
- Max
Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
- Institute
of Electronic Structure and Laser, Foundation for Research
and Technology-Hellas (FORTH), 71110 Heraklion, Greece
| | - Eric M. Furst
- Department
of Chemical & Biomolecular Engineering, University of Delaware, Newark, Delaware 19716, United States
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2
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Cardozo de Oliveira E, Xiang C, Esmann M, Lopez Abdala N, Fuertes M, Bruchhausen A, Pastoriza H, Perrin B, Soler-Illia G, Lanzillotti-Kimura N. Probing gigahertz coherent acoustic phonons in TiO 2 mesoporous thin films. PHOTOACOUSTICS 2023; 30:100472. [PMID: 36950519 PMCID: PMC10026033 DOI: 10.1016/j.pacs.2023.100472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 02/28/2023] [Accepted: 03/01/2023] [Indexed: 06/18/2023]
Abstract
Ultrahigh-frequency acoustic-phonon resonators usually require atomically flat interfaces to avoid phonon scattering and dephasing, leading to expensive fabrication processes, such as molecular beam epitaxy. Mesoporous thin films are based on inexpensive wet chemical fabrication techniques that lead to relatively flat interfaces regardless the presence of nanopores. Here, we report mesoporous titanium dioxide-based acoustic resonators with resonances up to 90 GHz, and quality factors from 3 to 7. Numerical simulations show a good agreement with the picosecond ultrasonics experiments. We also numerically study the effect of changes in the speed of sound on the performance of the resonator. This change could be induced by liquid infiltration into the mesopores. Our findings constitute the first step towards the engineering of building blocks based on mesoporous thin films for reconfigurable optoacoustic sensors.
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Affiliation(s)
- E.R. Cardozo de Oliveira
- Université Paris-Saclay, CNRS, Centre de Nanosciences et de Nanotechnologies, 91120 Palaiseau, France
| | - C. Xiang
- Université Paris-Saclay, CNRS, Centre de Nanosciences et de Nanotechnologies, 91120 Palaiseau, France
| | - M. Esmann
- Université Paris-Saclay, CNRS, Centre de Nanosciences et de Nanotechnologies, 91120 Palaiseau, France
- Institute for Physics, Carl von Ossietzky University of Oldenburg, 26129 Oldenburg, Germany
| | - N. Lopez Abdala
- Instituto de Nanosistemas, Escuela de Bio y Nanotecnologías, Universidad Nacional de San Martín-CONICET, Buenos Aires, Argentina
| | - M.C. Fuertes
- Gerencia Química, Inst. de Nanociencia y Nanotecnología, CNEA-CONICET, Buenos Aires, Argentina
| | - A. Bruchhausen
- Centro Atómico Bariloche, Inst. de Nanociencia y Nanotecnología, CNEA-CONICET, Rio Negro, Argentina
| | - H. Pastoriza
- Centro Atómico Bariloche, Inst. de Nanociencia y Nanotecnología, CNEA-CONICET, Rio Negro, Argentina
| | - B. Perrin
- Sorbonne Université, CNRS, Institut des NanoSciences de Paris, INSP, F-75005 Paris, France
| | - G.J.A.A. Soler-Illia
- Instituto de Nanosistemas, Escuela de Bio y Nanotecnologías, Universidad Nacional de San Martín-CONICET, Buenos Aires, Argentina
| | - N.D. Lanzillotti-Kimura
- Université Paris-Saclay, CNRS, Centre de Nanosciences et de Nanotechnologies, 91120 Palaiseau, France
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3
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Lifting restrictions on coherence loss when characterizing non-transparent hypersonic phononic crystals. Sci Rep 2021; 11:17174. [PMID: 34433886 PMCID: PMC8387379 DOI: 10.1038/s41598-021-96663-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 08/10/2021] [Indexed: 11/09/2022] Open
Abstract
Hypersonic phononic bandgap structures confine acoustic vibrations whose wavelength is commensurate with that of light, and have been studied using either time- or frequency-domain optical spectroscopy. Pulsed pump-probe lasers are the preferred instruments for characterizing periodic multilayer stacks from common vacuum deposition techniques, but the detection mechanism requires the injected sound wave to maintain coherence during propagation. Beyond acoustic Bragg mirrors, frequency-domain studies using a tandem Fabry–Perot interferometer (TFPI) find dispersions of two- and three-dimensional phononic crystals (PnCs) even for highly disordered samples, but with the caveat that PnCs must be transparent. Here, we demonstrate a hybrid technique for overcoming the limitations that time- and frequency-domain approaches exhibit separately. Accordingly, we inject coherent phonons into a non-transparent PnC using a pulsed laser and acquire the acoustic transmission spectrum on a TFPI, where pumped appear alongside spontaneously excited (i.e. incoherent) phonons. Choosing a metallic Bragg mirror for illustration, we determine the bandgap and compare with conventional time-domain spectroscopy, finding resolution of the hybrid approach to match that of a state-of-the-art asynchronous optical sampling setup. Thus, the hybrid pump–probe technique retains key performance features of the established one and going forward will likely be preferred for disordered samples.
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4
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Graphene-Based One-Dimensional Terahertz Phononic Crystal: Band Structures and Surface Modes. NANOMATERIALS 2020; 10:nano10112205. [PMID: 33167353 PMCID: PMC7694383 DOI: 10.3390/nano10112205] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 11/01/2020] [Accepted: 11/02/2020] [Indexed: 11/17/2022]
Abstract
In this paper, we provide a theoretical and numerical study of the acoustic properties of infinite and semi-infinite superlattices made out of graphene-semiconductor bilayers. In addition to the band structure, we emphasize the existence and behavior of localized and resonant acoustic modes associated with the free surface of such structures. These modes are polarized in the sagittal plane, defined by the incident wavevector and the normal to the layers. The surface modes are obtained from the peaks of the density of states, either inside the bulk bands or inside the minigaps of the superlattice. In these structures, the two directions of vibrations (longitudinal and transverse) are coupled giving rise to two bulk bands associated with the two polarizations of the waves. The creation of the free surface of the superlattice induces true surface localized modes inside the terahertz acoustic forbidden gaps, but also pseudo-surface modes which appear as well-defined resonances inside the allowed bands of the superlattice. Despite the low thickness of the graphene layer, and though graphene is a gapless material, when it is inserted periodically in a semiconductor, it allows the opening of wide gaps for all values of the wave vector k// (parallel to the interfaces). Numerical illustrations of the band structures and surface modes are given for graphene-Si superlattices, and the surface layer can be either Si or graphene. These surface acoustic modes can be used to realize liquid or bio-sensors graphene-based phononic crystal operating in the THz frequency domain.
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Alami M, El Boudouti EH, Djafari-Rouhani B, El Hassouani Y, Talbi A. Surface acoustic waves in one-dimensional piezoelectric-metallic phononic crystal: Effect of a cap layer. ULTRASONICS 2018; 90:80-97. [PMID: 29940395 DOI: 10.1016/j.ultras.2018.06.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 06/12/2018] [Accepted: 06/14/2018] [Indexed: 06/08/2023]
Abstract
We study the propagation of transverse acoustic waves associated with the surface of a semi-infinite superlattice (SL) composed of piezoelectric-metallic layers and capped with a piezoelectric layer. We present closed-form expressions for localized surface waves, the so-called Bleustein-Gulyaev (BG) waves depending on whether the cap layer is open-circuited or short-circuited. These expressions are obtained by means of the Green's function method which enables to deduce also the densities of states. These theoretical results are illustrated by a few numerical applications to SLs made of piezoelectric layers of hexagonal symmetry belonging to the 6 mm class such as PZT4 and ZnO in contact with metallic layers such as Fe, Al, Au, Cu and boron-doped-diamond. We demonstrate a rule about the existence of surface modes when considering two complementary semi-infinite SLs obtained by the cleavage of an infinite SL along a plane parallel to the piezoelectric layers. Indeed, when the surface layers are open-circuited, one obtains one surface mode per gap, this mode is associated with one of the two complementary SLs. However, when the surface layers are short-circuited, this rule is not fulfilled and one can obtain zero, one or two modes inside each gap of the two complementary SLs depending on the position of the plane where the cleavage is produced. We show that in addition to the BG surface waves localized at the surface of the cap layer, there may exist true guided waves and pseudo-guided waves (i.e. leaky waves) induced by the cap layer either inside the gaps or inside the bands of the SL respectively. Also, we highlight the possibility of existence of interface modes between the SL and a cap layer as well as an interaction between these modes and the BG surface mode when both modes fall in the same band gaps of the SL. The strength of the interaction depends on the width of the cap layer. Finally, we show that the electromechanical coupling coefficient (ECC) is very sensitive to the cap layer thickness, in particular we calculate and discuss the behavior of the ECC as a function of the adlayer thickness for the low velocity surface modes of the SL which exhibit the highest ECC values. The effect of the nature of the metallic layers inside the SL on the ECC is also investigated. The different surface modes discussed in this work should have applications in sensing applications.
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Affiliation(s)
- M Alami
- LPMR, Département de Physique, Faculté des Sciences, Université Mohammed I, 60000 Oujda, Morocco
| | - E H El Boudouti
- LPMR, Département de Physique, Faculté des Sciences, Université Mohammed I, 60000 Oujda, Morocco.
| | - B Djafari-Rouhani
- Institut d'Electronique, de Microélectronique et de Nanotechnologie (IEMN), UMR CNRS 8520 and UFR de Physique, Université de Lille, 59655 Villeneuve d'Ascq, France
| | - Y El Hassouani
- ESIM, Département de Physique, Faculté des Sciences et Techniques, Université Moulay Ismail, Boutalamine BP 509, 52000 Errachidia, Morocco
| | - A Talbi
- Univ. Lille, Centrale Lille, UVHC, ISEN, LIA LICS/LEMAC - IEMN UMR CNRS 8520, F-59000 Lille, France
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6
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Alonso-Redondo E, Gueddida A, Huesmann H, El Abouti O, Tremel W, El Boudouti EH, Djafari-Rouhani B, Fytas G. Direction-dependent elastic properties and phononic behavior of PMMA/BaTiO3 nanocomposite thin films. J Chem Phys 2017; 146:203325. [PMID: 28571385 DOI: 10.1063/1.4978675] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Affiliation(s)
- E. Alonso-Redondo
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - A. Gueddida
- Institut d’Electronique, de Microélectronique et de Nanotechnologie (IEMN), UMR-CNRS 8520, UFR de Physique, Université de Lille 1, 59655 Villeneuve d’Ascq, France
- LPMR, Département de Physique, Faculté des Sciences, Université Mohamed I, 60000 Oujda, Morocco
| | - H. Huesmann
- Department of Inorganic Chemistry, Johannes Gutenberg University, Duesbergweg 10-14, 55128 Mainz, Germany
| | - O. El Abouti
- LPMR, Département de Physique, Faculté des Sciences, Université Mohamed I, 60000 Oujda, Morocco
| | - W. Tremel
- Department of Inorganic Chemistry, Johannes Gutenberg University, Duesbergweg 10-14, 55128 Mainz, Germany
| | - E. H. El Boudouti
- LPMR, Département de Physique, Faculté des Sciences, Université Mohamed I, 60000 Oujda, Morocco
| | - B. Djafari-Rouhani
- Institut d’Electronique, de Microélectronique et de Nanotechnologie (IEMN), UMR-CNRS 8520, UFR de Physique, Université de Lille 1, 59655 Villeneuve d’Ascq, France
| | - G. Fytas
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
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7
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Schneider D, Gomopoulos N, Koh CY, Papadopoulos P, Kremer F, Thomas EL, Fytas G. Nonlinear control of high-frequency phonons in spider silk. NATURE MATERIALS 2016; 15:1079-83. [PMID: 27454046 DOI: 10.1038/nmat4697] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Accepted: 06/15/2016] [Indexed: 05/26/2023]
Abstract
Spider dragline silk possesses superior mechanical properties compared with synthetic polymers with similar chemical structure due to its hierarchical structure comprised of partially crystalline oriented nanofibrils. To date, silk's dynamic mechanical properties have been largely unexplored. Here we report an indirect hypersonic phononic bandgap and an anomalous dispersion of the acoustic-like branch from inelastic (Brillouin) light scattering experiments under varying applied elastic strains. We show the mechanical nonlinearity of the silk structure generates a unique region of negative group velocity, that together with the global (mechanical) anisotropy provides novel symmetry conditions for gap formation. The phononic bandgap and dispersion show strong nonlinear strain-dependent behaviour. Exploiting material nonlinearity along with tailored structural anisotropy could be a new design paradigm to access new types of dynamic behaviour.
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Affiliation(s)
- Dirk Schneider
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Nikolaos Gomopoulos
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Cheong Y Koh
- Functional and Smart Materials Laboratory, Emerging Systems, DSO National Laboratories, S117605 Singapore, Singapore
| | - Periklis Papadopoulos
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
- Department of Physics, University of Ioannina, 45110 Ioannina, Greece
| | - Friedrich Kremer
- Institute of Experimental Physics I, Linnéstr. 5, University of Leipzig, 04103 Leipzig, Germany
| | - Edwin L Thomas
- Department of Materials Science and Nano-Engineering, Rice University, Houston, Texas 77030, USA
| | - George Fytas
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
- Department of Materials Science University of Crete and IESL-F.O.R.T.H, 77110 Heraklion, Greece
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8
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Formation of Bragg Band Gaps in Anisotropic Phononic Crystals Analyzed With the Empty Lattice Model. CRYSTALS 2016. [DOI: 10.3390/cryst6050052] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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9
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Bolmatov D, Zhernenkov M, Zav'yalov D, Stoupin S, Cunsolo A, Cai YQ. Thermally triggered phononic gaps in liquids at THz scale. Sci Rep 2016; 6:19469. [PMID: 26763899 PMCID: PMC4725891 DOI: 10.1038/srep19469] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Accepted: 11/27/2015] [Indexed: 12/22/2022] Open
Abstract
In this paper we present inelastic X-ray scattering experiments in a diamond anvil cell and molecular dynamic simulations to investigate the behavior of phononic excitations in liquid Ar. The spectra calculated using molecular dynamics were found to be in a good agreement with the experimental data. Furthermore, we observe that, upon temperature increases, a low-frequency transverse phononic gap emerges while high-frequency propagating modes become evanescent at the THz scale. The effect of strong localization of a longitudinal phononic mode in the supercritical phase is observed for the first time. The evidence for the high-frequency transverse phononic gap due to the transition from an oscillatory to a ballistic dynamic regimes of motion is presented and supported by molecular dynamics simulations. This transition takes place across the Frenkel line thermodynamic limit which demarcates compressed liquid and non-compressed fluid domains on the phase diagram and is supported by calculations within the Green-Kubo phenomenological formalism. These results are crucial to advance the development of novel terahertz thermal devices, phononic lenses, mirrors, and other THz metamaterials.
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Affiliation(s)
- Dima Bolmatov
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY 11973, USA
| | - Mikhail Zhernenkov
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY 11973, USA
| | | | - Stanislav Stoupin
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - Alessandro Cunsolo
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY 11973, USA
| | - Yong Q Cai
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY 11973, USA
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10
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Quotane I, El Boudouti EH, Djafari-Rouhani B, El Hassouani Y, Velasco VR. Bulk and surface acoustic waves in solid-fluid Fibonacci layered materials. ULTRASONICS 2015; 61:40-51. [PMID: 25819878 DOI: 10.1016/j.ultras.2015.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Revised: 03/06/2015] [Accepted: 03/09/2015] [Indexed: 06/04/2023]
Abstract
We study theoretically the propagation and localization of acoustic waves in quasi-periodic structures made of solid and fluid layers arranged according to a Fibonacci sequence. We consider two types of structures: either a given Fibonacci sequence or a periodic repetition of a given sequence called Fibonacci superlattice. Various properties of these systems such as: the scaling law and the self-similarity of the transmission spectra or the power law behavior of the measure of the energy spectrum have been highlighted for waves of sagittal polarization in normal and oblique incidence. In addition to the allowed modes which propagate along the system, we study surface modes induced by the surface of the Fibonacci superlattice. In comparison with solid-solid layered structures, the solid-fluid systems exhibit transmission zeros which can break the self-similarity behavior in the transmission spectra for a given sequence or induce additional gaps other than Bragg gaps in a periodic structure.
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Affiliation(s)
- I Quotane
- Laboratoire de Dynamique et d'Optique des Matériaux, Département de Physique, Faculté des Sciences, Université Mohamed I, Oujda, Morocco
| | - E H El Boudouti
- Laboratoire de Dynamique et d'Optique des Matériaux, Département de Physique, Faculté des Sciences, Université Mohamed I, Oujda, Morocco; Institut d'Electronique, de Microélectronique et de Nanotechnologie (IEMN), UMR CNRS 8520, UFR de Physique, Université des Sciences et Technologies de Lille, 59655 Villeneuve d'Ascq, France.
| | - B Djafari-Rouhani
- Institut d'Electronique, de Microélectronique et de Nanotechnologie (IEMN), UMR CNRS 8520, UFR de Physique, Université des Sciences et Technologies de Lille, 59655 Villeneuve d'Ascq, France
| | - Y El Hassouani
- EPM, Département de Physique FSTE, Université Moulay Ismail, Boutalamine B.P. 509, Errachidia, Morocco
| | - V R Velasco
- Instituto de Ciencia de Materiales de Madrid, CSIC, Sor Juana Inés de la Cruz 3, E-28049 Madrid, Spain
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11
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Alonso-Redondo E, Huesmann H, El Boudouti EH, Tremel W, Djafari-Rouhani B, Butt HJ, Fytas G. Phoxonic Hybrid Superlattice. ACS APPLIED MATERIALS & INTERFACES 2015; 7:12488-95. [PMID: 25855860 DOI: 10.1021/acsami.5b01247] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
We studied experimentally and theoretically the direction-dependent elastic and electromagnetic wave propagation in a supported film of hybrid PMMA (poly[methyl-methacrylate])-TiO2 superlattice (SL). In the direction normal to the layers, this one-dimensional periodic structure opens propagation band gaps for both hypersonic (GHz) phonons and near-UV photons. The high mismatch of elastic and optical impedance results in a large dual phoxonic band gap. The presence of defects inherent to the spin-coating fabrication technique is sensitively manifested in the band gap region. Utilizing Brillouin light scattering, phonon propagation along the layers was observed to be distinctly different from propagation normal to them and can, under certain conditions (SL thickness and substrate elasticity), reveal the nanomechanical properties of the constituent layers. Besides the first realization of unidirectional phoxonic behavior, hybrid (soft-hard) periodic materials are a promising simple platform for opto-acoustic interactions and applications such as filters and Bragg mirrors.
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Affiliation(s)
- Elena Alonso-Redondo
- ‡Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Hannah Huesmann
- §Department of Inorganic Chemistry, Johannes Gutenberg University, Duesbergweg 10-14, 55128 Mainz, Germany
| | - El-Houssaine El Boudouti
- ⊥LDOM, Département de Physique, Faculté des Sciences, Université Mohamed I, 60000 Oujda, Morocco
- #Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN), UMR-CNRS 8520, UFR de Physique, Université de Lille 1, 59655 Villeneuve d'Ascq, France
| | - Wolfgang Tremel
- §Department of Inorganic Chemistry, Johannes Gutenberg University, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Bahram Djafari-Rouhani
- #Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN), UMR-CNRS 8520, UFR de Physique, Université de Lille 1, 59655 Villeneuve d'Ascq, France
| | - Hans-Juergen Butt
- ‡Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - George Fytas
- ‡Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
- ||Department of Materials Science, University of Crete and IESL/FORTH, 71110 Heraklion, Greece
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12
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Liaqat F, Tahir MN, Schechtel E, Kappl M, Auernhammer GK, Char K, Zentel R, Butt HJ, Tremel W. High-performance TiO2 nanoparticle/DOPA-polymer composites. Macromol Rapid Commun 2015; 36:1129-37. [PMID: 25929974 DOI: 10.1002/marc.201400706] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2014] [Revised: 04/07/2015] [Indexed: 12/31/2022]
Abstract
Many natural materials are complex composites whose mechanical properties are often outstanding considering the weak constituents from which they are assembled. Nacre, made of inorganic (CaCO3 ) and organic constituents, is a textbook example because of its strength and toughness, which are related to its hierarchical structure and its well-defined organic-inorganic interface. Emulating the construction principles of nacre using simple inorganic materials and polymers is essential for understanding how chemical composition and structure determine biomaterial functions. A hard multilayered nanocomposite is assembled based on alternating layers of TiO2 nanoparticles and a 3-hydroxy-tyramine (DOPA) substituted polymer (DOPA-polymer), strongly cemented together by chelation through infiltration of the polymer into the TiO2 mesocrystal. With a Young's modulus of 17.5 ± 2.5 GPa and a hardness of 1.1 ± 0.3 GPa the resulting material exhibits high resistance against elastic as well as plastic deformation. A key feature leading to the high strength is the strong adhesion of the DOPA-polymer to the TiO2 nanoparticles.
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Affiliation(s)
- Faroha Liaqat
- Institute for Inorganic and Analytical Chemistry; Johannes Gutenberg-University; Duesbergweg 10-14 55099 Mainz Germany
| | - Muhammad Nawaz Tahir
- Institute for Inorganic and Analytical Chemistry; Johannes Gutenberg-University; Duesbergweg 10-14 55099 Mainz Germany
| | - Eugen Schechtel
- Institute for Inorganic and Analytical Chemistry; Johannes Gutenberg-University; Duesbergweg 10-14 55099 Mainz Germany
| | - Michael Kappl
- Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
| | | | - Kookheon Char
- School of Chemical and Biological Engineering; The National Creative Research Initiative Center for Intelligent Hybrids; The WCU Program of Chemical Convergence for Energy and Environment; Seoul National University; 1 Gwanak-ro Gwanak-gu Seoul 151-744 South Korea
| | - Rudolf Zentel
- Institute for Organic Chemistry; Johannes Gutenberg-University; Duesbergweg 10-14 55099 Mainz Germany
| | - Hans-Jürgen Butt
- Max Planck Institute for Polymer Research; Ackermannweg 10 55128 Mainz Germany
| | - Wolfgang Tremel
- Institute for Inorganic and Analytical Chemistry; Johannes Gutenberg-University; Duesbergweg 10-14 55099 Mainz Germany
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13
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Poyser CL, Akimov AV, Campion RP, Kent AJ. Coherent phonon optics in a chip with an electrically controlled active device. Sci Rep 2015; 5:8279. [PMID: 25652241 PMCID: PMC4317685 DOI: 10.1038/srep08279] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2014] [Accepted: 01/06/2015] [Indexed: 11/10/2022] Open
Abstract
Phonon optics concerns operations with high-frequency acoustic waves in solid media in a similar way to how traditional optics operates with the light beams (i.e. photons). Phonon optics experiments with coherent terahertz and sub-terahertz phonons promise a revolution in various technical applications related to high-frequency acoustics, imaging, and heat transport. Previously, phonon optics used passive methods for manipulations with propagating phonon beams that did not enable their external control. Here we fabricate a phononic chip, which includes a generator of coherent monochromatic phonons with frequency 378 GHz, a sensitive coherent phonon detector, and an active layer: a doped semiconductor superlattice, with electrical contacts, inserted into the phonon propagation path. In the experiments, we demonstrate the modulation of the coherent phonon flux by an external electrical bias applied to the active layer. Phonon optics using external control broadens the spectrum of prospective applications of phononics on the nanometer scale.
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Affiliation(s)
- Caroline L Poyser
- School of Physics and Astronomy, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - Andrey V Akimov
- School of Physics and Astronomy, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - Richard P Campion
- School of Physics and Astronomy, University of Nottingham, Nottingham NG7 2RD, United Kingdom
| | - Anthony J Kent
- School of Physics and Astronomy, University of Nottingham, Nottingham NG7 2RD, United Kingdom
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14
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Golub MV, Zhang C. In-plane time-harmonic elastic wave motion and resonance phenomena in a layered phononic crystal with periodic cracks. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 2015; 137:238-252. [PMID: 25618055 DOI: 10.1121/1.4904498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
This paper presents an elastodynamic analysis of two-dimensional time-harmonic elastic wave propagation in periodically multilayered elastic composites, which are also frequently referred to as one-dimensional phononic crystals, with a periodic array of strip-like interior or interface cracks. The transfer matrix method and the boundary integral equation method in conjunction with the Bloch-Floquet theorem are applied to compute the elastic wave fields in the layered periodic composites. The effects of the crack size, spacing, and location, as well as the incidence angle and the type of incident elastic waves on the wave propagation characteristics in the composite structure are investigated in details. In particular, the band-gaps, the localization and the resonances of elastic waves are revealed by numerical examples. In order to understand better the wave propagation phenomena in layered phononic crystals with distributed cracks, the energy flow vector of Umov and the corresponding energy streamlines are visualized and analyzed. The numerical results demonstrate that large energy vortices obstruct elastic wave propagation in layered phononic crystals at resonance frequencies. They occur before the cracks reflecting most of the energy transmitted by the incoming wave and disappear when the problem parameters are shifted from the resonant ones.
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Affiliation(s)
- Mikhail V Golub
- Institute for Mathematics, Mechanics and Informatics, Kuban State University, Krasnodar, 350040, Russia
| | - Chuanzeng Zhang
- Department of Civil Engineering, University of Siegen, D-57068 Siegen, Germany
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15
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Lydon J, Serra-Garcia M, Daraio C. Local to extended transitions of resonant defect modes. PHYSICAL REVIEW LETTERS 2014; 113:185503. [PMID: 25396380 DOI: 10.1103/physrevlett.113.185503] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Indexed: 05/16/2023]
Abstract
We study the localized modes created by introducing a resonant defect in a mechanical lattice. We find that modes introduced by resonant defects have profiles that can be tuned from being extremely localized to totally delocalized by an external force. This is in direct contrast with modes introduced by traditional mass or stiffness defects, in which the modes' profiles stay constant. We present an analytical model for resonant defects in one-dimensional nonlinear lattices, computationally demonstrate the equivalent effect in a two-dimensional lattice, and experimentally observe the mode profiles in a granular crystal. While our study is concerned with nonlinear mechanical lattices, the generality of our model suggests that the same effect should be present in other types of periodic lattices.
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Affiliation(s)
- Joseph Lydon
- Engineering and Applied Science, California Institute of Technology, Pasadena, California 91125, USA
| | - Marc Serra-Garcia
- Department of Mechanical and Process Engineering, Swiss Federal Institute of Technology (ETH), Zürich 8092, Switzerland
| | - Chiara Daraio
- Engineering and Applied Science, California Institute of Technology, Pasadena, California 91125, USA and Department of Mechanical and Process Engineering, Swiss Federal Institute of Technology (ETH), Zürich 8092, Switzerland
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16
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Wu S, Zhu G, Zhang JS, Banerjee D, Bass JD, Ling C, Yano K. Anisotropic lattice expansion of three-dimensional colloidal crystals and its impact on hypersonic phonon band gaps. Phys Chem Chem Phys 2014; 16:8921-6. [PMID: 24691556 DOI: 10.1039/c4cp00498a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report anisotropic expansion of self-assembled colloidal polystyrene-poly(dimethylsiloxane) crystals and its impact on the phonon band structure at hypersonic frequencies. The structural expansion was achieved by a multistep infiltration-polymerization process. Such a process expands the interplanar lattice distance 17% after 8 cycles whereas the in-plane distance remains unaffected. The variation of hypersonic phonon band structure induced by the anisotropic lattice expansion was recorded by Brillouin measurements. In the sample before expansion, a phononic band gap between 3.7 and 4.4 GHz is observed; after 17% structural expansion, the gap is shifted to a lower frequency between 3.5 and 4.0 GHz. This study offers a facile approach to control the macroscopic structure of colloidal crystals with great potential in designing tunable phononic devices.
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Affiliation(s)
- Songtao Wu
- Toyota Research Institute of North America, Toyota Motor Engineering and Manufacturing North America, Inc., Ann Arbor, Michigan 48105, USA.
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