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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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Huang CYT, Kargar F, Debnath T, Debnath B, Valentin MD, Synowicki R, Schoeche S, Lake RK, Balandin AA. Phononic and photonic properties of shape-engineered silicon nanoscale pillar arrays. NANOTECHNOLOGY 2020; 31:30LT01. [PMID: 32240999 DOI: 10.1088/1361-6528/ab85ee] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
We report the results of Brillouin-Mandelstam spectroscopy and Mueller matrix spectroscopic ellipsometry of the nanoscale 'pillar with the hat' periodic silicon structures, revealing intriguing phononic and photonic-phoxonic-properties. It has been theoretically shown that periodic structures with properly tuned dimensions can act simultaneously as phononic and photonic crystals, strongly affecting the light-matter interactions. Acoustic phonon states can be tuned by external boundaries, either as a result of phonon confinement effects in individual nanostructures, or as a result of artificially induced external periodicity, as in the phononic crystals. The shape of the nanoscale pillar array was engineered to ensure the interplay of both effects. The Brillouin-Mandelstam spectroscopy data indicated strong flattening of the acoustic phonon dispersion in the frequency range from 2 GHz to 20 GHz and the phonon wave vector extending to the higher-order Brillouin zones. The specifics of the phonon dispersion dependence on the pillar arrays' orientation suggest the presence of both periodic modulation and spatial localization effects for the acoustic phonons. The ellipsometry data reveal a distinct scatter pattern of four-fold symmetry due to nanoscale periodicity of the pillar arrays. Our results confirm the dual functionality of the nanostructured shape-engineered structure and indicate a possible new direction for fine-tuning the light-matter interaction in the next generation of photonic, optoelectronic, and phononic devices.
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Affiliation(s)
- Chun Yu Tammy Huang
- Phonon Optimized Engineered Materials (POEM) Center, Department of Electrical and Computer Engineering and Materials Science and Engineering Program, University of California, Riverside, California 92521, United States of America
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Huesmann H, Schechtel E, Lieberwirth I, Panthöfer M, Tremel W. Surface Chemistry Directs the Tunable Assembly of TiO
2
Anatase Nanocubes into Three‐Dimensional Mesocrystals. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900376] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hannah Huesmann
- Institut für Anorganische Chemie und Analytische Chemie Johannes‐Gutenberg‐Universität Mainz Duesbergweg 10‐14 55128 Mainz Germany
| | - Eugen Schechtel
- Institut für Anorganische Chemie und Analytische Chemie Johannes‐Gutenberg‐Universität Mainz Duesbergweg 10‐14 55128 Mainz Germany
| | - Ingo Lieberwirth
- Max‐Planck‐Institut für Polymerforschung Ackermannweg 10 55128 Mainz Germany
| | - Martin Panthöfer
- Institut für Anorganische Chemie und Analytische Chemie Johannes‐Gutenberg‐Universität Mainz Duesbergweg 10‐14 55128 Mainz Germany
| | - Wolfgang Tremel
- Institut für Anorganische Chemie und Analytische Chemie Johannes‐Gutenberg‐Universität Mainz Duesbergweg 10‐14 55128 Mainz Germany
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Abstract
Photonic crystal (PC) thin films that are self-assembled from different-sized silica microspheres were prepared for studying mechanical properties via nanoindentation at the submicron scale. We found that the silica photonic crystals (PCs) possessed a face-centered cubic (FCC) microstructure and their elastic modulus and hardness were in the range of ~1.81–4.92 GPa and 0.008–0.033 GPa, respectively. The calculated results proved that there were size-dependent properties in the silica PCs, in that the elastic modulus and hardness increased as the diameter decreased from 538 nm to 326 nm. After studying the total work and plastic work in the progressive deformation of silica PCs during the nanoindentation tests, we developed a two-stage deformation model to explain how the microsphere size affects the mechanical properties of PC thin films. The phenomenon of “smaller is stronger” is mainly due to the energy consumption, which combines the effects of microstructure collapse, microsphere slide, and reduced porosity during the whole loading and unloading process. In addition, the results of numerical simulation matched the experimental data and reflected the energy change rules of PCs during the indentation process. Furthermore, the study affords useful guidance for constructing high-performance films with proper design and potential application in next-generation PC materials.
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Schechtel E, Yan Y, Xu X, Cang Y, Tremel W, Wang Z, Li B, Fytas G. Elastic Modulus and Thermal Conductivity of Thiolene/TiO 2 Nanocomposites. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2017; 121:25568-25575. [PMID: 29755637 PMCID: PMC5941249 DOI: 10.1021/acs.jpcc.7b08425] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Revised: 10/04/2017] [Indexed: 05/11/2023]
Abstract
Metal oxide based polymer nanocomposites find diverse applications as functional materials, and in particular thiol-ene/TiO2 nanocomposites are promising candidates for dental restorative materials. The important mechanical and thermal properties of the nanocomposites, however, are still not well understood. In this study, the elastic modulus and thermal conductivity of thiol-ene/TiO2 nanocomposite thin films with varying weight fractions of TiO2 nanoparticles are investigated by using Brillouin light scattering spectroscopy and 3ω measurements, respectively. As the TiO2 weight fraction increases from 0 to 90%, the effective elastic longitudinal modulus of the films increases from 6.2 to 37.5 GPa, and the effective thermal conductivity from 0.04 to 0.76 W/m K. The former increase could be attributed to the covalent cross-linking of the nanocomposite constituents. The latter one could be ascribed to the addition of high thermal conductivity TiO2 nanoparticles and the formation of possible conductive channels at high TiO2 weight fractions. The linear dependence of the thermal conductivity on the sound velocity, reported for amorphous polymers, is not observed in the present nanocomposite system.
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Affiliation(s)
- Eugen Schechtel
- Johannes
Gutenberg University, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Yaping Yan
- Center
for Phononics and Thermal Energy Science, School of Physics and Engineering
and Institute of Advanced Study, Tongji
University, Shanghai 200092, China
| | - Xiangfan Xu
- Center
for Phononics and Thermal Energy Science, School of Physics and Engineering
and Institute of Advanced Study, Tongji
University, Shanghai 200092, China
| | - Yu Cang
- Max
Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Wolfgang Tremel
- Johannes
Gutenberg University, Duesbergweg 10-14, 55128 Mainz, Germany
| | - Zuyuan Wang
- Max
Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
| | - Baowen Li
- Department
of Mechanical Engineering, University of
Colorado, Boulder 80309, United States
| | - George Fytas
- Max
Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
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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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