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Zhou Y, Meng Y, Luo G, Chen B, Zhong D, Hu Y. Laser-Induced Stress-Driven Nanoplate Jumping Visualized by Ultrafast Electron Microscopy. ACS NANO 2024. [PMID: 39018251 DOI: 10.1021/acsnano.4c05717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/19/2024]
Abstract
Understanding laser-induced jumping has attracted great interest in nanomaterial launching and transfer but requires a high spatiotemporal resolution visualization. Here, we report a jumping dynamics of nanoplate driven by ultrafast laser-induced stress using time-resolved transmission electron microscopy. Single-shot imaging reveals a nondestructive launching of gold nanoplates in several nanoseconds after the pulsed femtosecond laser excitation. The temperature rise and acoustic vibration, derived from ultrafast electron crystallography with a picosecond time resolution, confirm the existence of a laser-induced elastic stress wave. The generation, propagation, and reflection of thermal stress waves are further clarified by atomic simulation. The nonequilibrium ultrafast laser heating produces a compressive stress wave within several picoseconds, constrained by the supporting substrate under nanoplate to provide thrust force. This compressive stress is subsequently reflected into tensile stress by the substrate, promoting the nanoplate to jump off the substrate. Furthermore, the uneven interface adhesion results in the jumping flip of nanoplates, as well as, diminished their jumping speed. This study unveils the jumping regime driven by impulsive laser-excited stress and offers understanding of light-matter interaction.
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Affiliation(s)
- Yu Zhou
- State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yenan Meng
- Center for Ultrafast Science and Technology, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Guohu Luo
- State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Bin Chen
- Center for Ultrafast Science and Technology, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Dongping Zhong
- Center for Ultrafast Science and Technology, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yongxiang Hu
- State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
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2
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Solala I, Driemeier C, Mautner A, Penttilä PA, Seitsonen J, Leppänen M, Mihhels K, Kontturi E. Directed Assembly of Cellulose Nanocrystals in Their Native Solid-State Template of a Processed Fiber Cell Wall. Macromol Rapid Commun 2021; 42:e2100092. [PMID: 33955068 DOI: 10.1002/marc.202100092] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 03/24/2021] [Indexed: 12/15/2022]
Abstract
Nanoparticle assembly is intensely surveyed because of the numerous applications within fields such as catalysis, batteries, and biomedicine. Here, directed assembly of rod-like, biologically derived cellulose nanocrystals (CNCs) within the template of a processed cotton fiber cell wall, that is, the native origin of CNCs, is reported. It is a system where the assembly takes place in solid state simultaneously with the top-down formation of the CNCs via hydrolysis with HCl vapor. Upon hydrolysis, cellulose microfibrils in the fiber break down to CNCs that then pack together, resulting in reduced pore size distribution of the original fiber. The denser packing is demonstrated by N2 adsorption, water uptake, thermoporometry, and small-angle X-ray scattering, and hypothetically assigned to attractive van der Waals interactions between the CNCs.
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Affiliation(s)
- Iina Solala
- Department of Bioproducts and Biosystems, Aalto University, P.O.Box 16300, Aalto, FI-00076, Finland
| | - Carlos Driemeier
- Brazilian Biorenewables National Laboratory (LNBR), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, 13083-970, Brazil
| | - Andreas Mautner
- Polymer and Composite Engineering (PaCE) Group, Institute of Materials Chemistry and Research, University of Vienna, Währingerstrasse 42, Vienna, A-1090, Austria
| | - Paavo A Penttilä
- Department of Bioproducts and Biosystems, Aalto University, P.O.Box 16300, Aalto, FI-00076, Finland.,Large Scale Structures Group, Institut Max von Laue - Paul Langevin (ILL), 71 Avenue des Martyrs - CS 20156, Grenoble, F-38042, Cedex 9, France
| | - Jani Seitsonen
- Nanomicroscopy Centre, Aalto University, P.O. Box 15100, Aalto, FI-00076, Finland
| | - Miika Leppänen
- Nanoscience Centre, University of Jyväskylä, Jyväskylä, 40014, Finland
| | - Karl Mihhels
- Department of Bioproducts and Biosystems, Aalto University, P.O.Box 16300, Aalto, FI-00076, Finland
| | - Eero Kontturi
- Department of Bioproducts and Biosystems, Aalto University, P.O.Box 16300, Aalto, FI-00076, Finland
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3
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Liu GS, He M, Wang T, Wang L, He Z, Zhan R, Chen L, Chen Y, Yang BR, Luo Y, Chen Z. Optically Programmable Plateau-Rayleigh Instability for High-Resolution and Scalable Morphology Manipulation of Silver Nanowires for Flexible Optoelectronics. ACS APPLIED MATERIALS & INTERFACES 2020; 12:53984-53993. [PMID: 32872767 DOI: 10.1021/acsami.0c11682] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The ability to engineer microscale and nanoscale morphology upon metal nanowires (NWs) has been essential to achieve new electronic and photonic functions. Here, this study reports an optically programmable Plateau-Rayleigh instability (PRI) to demonstrate a facile, scalable, and high-resolution morphology engineering of silver NWs (AgNWs) at temperatures <150 °C within 10 min. This has been accomplished by conjugating a photosensitive diphenyliodonium nitrate with AgNWs to modulate surface-atom diffusion. The conjugation is UV-decomposable and able to form a cladding of molten salt-like compounds, so that the PRI of the AgNWs can be optically programmed and triggered at a much lower temperature than the melting point of AgNWs. This PRI self-assembly technique can yield both various novel nanostructures from single NW and large-area microelectrodes from the NW network on various substrates, such as a nanoscale dot-dash chain and the microelectrode down to 5 μm in line width that is the highest resolution ever fabricated for the AgNW-based electrode. Finally, the patterned AgNWs as flexible transparent electrodes were demonstrated for a wearable CdS NW photodetector. This study provides a new paradigm for engineering metal micro-/nanostructures, which holds great potential in fabrication of various sophisticated devices.
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Affiliation(s)
- Gui-Shi Liu
- Key Laboratory of Optoelectronic Information and Sensing Technologies of Guangdong Higher Education Institutes, Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, College of Science & Engineering, Jinan University, Guangzhou 510632, China
| | - Mengyi He
- Key Laboratory of Optoelectronic Information and Sensing Technologies of Guangdong Higher Education Institutes, Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, College of Science & Engineering, Jinan University, Guangzhou 510632, China
| | - Ting Wang
- Key Laboratory of Optoelectronic Information and Sensing Technologies of Guangdong Higher Education Institutes, Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, College of Science & Engineering, Jinan University, Guangzhou 510632, China
| | - Li Wang
- School of Chemistry and Chemical Engineering, Neijiang Normal University, Neijiang 641100, China
| | - Zhi He
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Electronics and Information Technology, Sun Yat-Sen University, Guangzhou 510006, China
| | - Runze Zhan
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Electronics and Information Technology, Sun Yat-Sen University, Guangzhou 510006, China
| | - Lei Chen
- Key Laboratory of Optoelectronic Information and Sensing Technologies of Guangdong Higher Education Institutes, Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, College of Science & Engineering, Jinan University, Guangzhou 510632, China
| | - Yaofei Chen
- Key Laboratory of Optoelectronic Information and Sensing Technologies of Guangdong Higher Education Institutes, Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, College of Science & Engineering, Jinan University, Guangzhou 510632, China
| | - Bo-Ru Yang
- State Key Laboratory of Optoelectronic Materials and Technologies, School of Electronics and Information Technology, Sun Yat-Sen University, Guangzhou 510006, China
| | - Yunhan Luo
- Key Laboratory of Optoelectronic Information and Sensing Technologies of Guangdong Higher Education Institutes, Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, College of Science & Engineering, Jinan University, Guangzhou 510632, China
| | - Zhe Chen
- Key Laboratory of Optoelectronic Information and Sensing Technologies of Guangdong Higher Education Institutes, Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, College of Science & Engineering, Jinan University, Guangzhou 510632, China
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4
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Dasbach M, Pyschik M, Lehmann V, Parey K, Rhinow D, Reinhardt HM, Hampp NA. Assembling Carbon Nanotube Architectures. ACS NANO 2020; 14:8181-8190. [PMID: 32551529 DOI: 10.1021/acsnano.0c01606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Well-defined multiwalled carbon nanotube structures are generated on stainless steel AISI 304 (EN AW 1.4301) by chemical vapor deposition. Pulsed laser-induced dewetting (PLiD) of the surface, by 532 nm nanosecond laser pulses, is utilized for the preparation of metal oxide nanoparticle fields with a defined particle number per area. The reduction of the precursor particles is achieved in an Ar/H2 (10% H2) atmosphere at 750 °C, thereby generating catalytic nanoparticles (c-NPs) for carbon nanotube (CNT) growth. Ethylene is used as a precursor gas for CNT growth. CNT lengths and morphology are directly related to the c-NP aerial density, which is dependent on the number of dewetting cycles during the PLiD process. Within a narrow window of c-NP per area, vertically aligned carbon nanotubes of great lengths are obtained. For more intense laser treatments, three-dimensional dewetting occurs and results in the formation of cauliflower-like structures. The laser process enables the creation of all kinds of CNT morphologies nearby on the microscale.
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Affiliation(s)
- Michael Dasbach
- Department of Chemistry, Philipps-University of Marburg, Hans-Meerwein-Strasse 4, 35032 Marburg, Germany
| | - Markus Pyschik
- Department of Chemistry, Philipps-University of Marburg, Hans-Meerwein-Strasse 4, 35032 Marburg, Germany
| | - Viktor Lehmann
- Department of Chemistry, Philipps-University of Marburg, Hans-Meerwein-Strasse 4, 35032 Marburg, Germany
| | - Kristian Parey
- Max-Planck Institute for Biophysics, Max-von-Laue Strasse 3, 60438 Frankfurt, Germany
| | - Daniel Rhinow
- Department of Chemistry, Philipps-University of Marburg, Hans-Meerwein-Strasse 4, 35032 Marburg, Germany
- Max-Planck Institute for Biophysics, Max-von-Laue Strasse 3, 60438 Frankfurt, Germany
| | - Hendrik M Reinhardt
- Department of Chemistry, Philipps-University of Marburg, Hans-Meerwein-Strasse 4, 35032 Marburg, Germany
| | - Norbert A Hampp
- Department of Chemistry, Philipps-University of Marburg, Hans-Meerwein-Strasse 4, 35032 Marburg, Germany
- Material Science Center, 35032 Marburg, Germany
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5
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Bollani M, Salvalaglio M, Benali A, Bouabdellaoui M, Naffouti M, Lodari M, Corato SD, Fedorov A, Voigt A, Fraj I, Favre L, Claude JB, Grosso D, Nicotra G, Mio A, Ronda A, Berbezier I, Abbarchi M. Templated dewetting of single-crystal sub-millimeter-long nanowires and on-chip silicon circuits. Nat Commun 2019; 10:5632. [PMID: 31822679 PMCID: PMC6904683 DOI: 10.1038/s41467-019-13371-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Accepted: 11/06/2019] [Indexed: 11/09/2022] Open
Abstract
Large-scale, defect-free, micro- and nano-circuits with controlled inter-connections represent the nexus between electronic and photonic components. However, their fabrication over large scales often requires demanding procedures that are hardly scalable. Here we synthesize arrays of parallel ultra-long (up to 0.75 mm), monocrystalline, silicon-based nano-wires and complex, connected circuits exploiting low-resolution etching and annealing of thin silicon films on insulator. Phase field simulations reveal that crystal faceting and stabilization of the wires against breaking is due to surface energy anisotropy. Wires splitting, inter-connections and direction are independently managed by engineering the dewetting fronts and exploiting the spontaneous formation of kinks. Finally, we fabricate field-effect transistors with state-of-the-art trans-conductance and electron mobility. Beyond the first experimental evidence of controlled dewetting of patches featuring a record aspect ratio of \documentclass[12pt]{minimal}
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\begin{document}$$\sim$$\end{document}~mm long nano-wires, our method constitutes a distinct and promising approach for the deterministic implementation of atomically-smooth, mono-crystalline electronic and photonic circuits. Fabricating defect-free micro- and nano-circuits over large scales with controlled interconnections remains a challenge. Here, Bollani et al. show a dewetting strategy for engineering arrays of parallel Si-based nanowires up to 0.75 mm and complex interconnected circuits of monocrystalline Si on a chip.
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Affiliation(s)
- Monica Bollani
- Istituto di Fotonica e Nanotecnologie-Consiglio Nazionale delle Ricerche, Laboratory for Nanostructure Epitaxy and Spintronics on Silicon, LNESS, Via Anzani 42, 22100, Como, Italy.
| | - Marco Salvalaglio
- Institute of Scientific Computing, Technische Universität Dresden, 01062, Dresden, Germany.
| | - Abdennacer Benali
- Aix Marseille Univ, Université de Toulon, CNRS, IM2NP, Marseille, France
| | - Mohammed Bouabdellaoui
- Aix Marseille Univ, Université de Toulon, CNRS, IM2NP, Marseille, France.,Laboratory of Physics of Condensed Matter and Renewable Energy, Faculty of Sciences and Technology, Hassan II University of Casablanca, 146 Mohammedia, Casablanca, Morocco
| | - Meher Naffouti
- Aix Marseille Univ, Université de Toulon, CNRS, IM2NP, Marseille, France.,Laboratoire de Micro-Optoélectronique et Nanostructures, Faculté des Sciences de Monastir, Université de Monastir, 5019, Monastir, Tunisia
| | - Mario Lodari
- Istituto di Fotonica e Nanotecnologie-Consiglio Nazionale delle Ricerche, Laboratory for Nanostructure Epitaxy and Spintronics on Silicon, LNESS, Via Anzani 42, 22100, Como, Italy
| | - Stefano Di Corato
- Istituto di Fotonica e Nanotecnologie-Consiglio Nazionale delle Ricerche, Laboratory for Nanostructure Epitaxy and Spintronics on Silicon, LNESS, Via Anzani 42, 22100, Como, Italy
| | - Alexey Fedorov
- Istituto di Fotonica e Nanotecnologie-Consiglio Nazionale delle Ricerche, Laboratory for Nanostructure Epitaxy and Spintronics on Silicon, LNESS, Via Anzani 42, 22100, Como, Italy
| | - Axel Voigt
- Institute of Scientific Computing, Technische Universität Dresden, 01062, Dresden, Germany.,Dresden Center for Computational Materials Science, Technische Universität Dresden, 01062, Dresden, Germany
| | - Ibtissem Fraj
- Aix Marseille Univ, Université de Toulon, CNRS, IM2NP, Marseille, France.,Laboratoire de Micro-Optoélectronique et Nanostructures, Faculté des Sciences de Monastir, Université de Monastir, 5019, Monastir, Tunisia
| | - Luc Favre
- Aix Marseille Univ, Université de Toulon, CNRS, IM2NP, Marseille, France
| | - Jean Benoit Claude
- Aix Marseille Univ, Université de Toulon, CNRS, IM2NP, Marseille, France
| | - David Grosso
- Aix Marseille Univ, Université de Toulon, CNRS, IM2NP, Marseille, France
| | | | - Antonio Mio
- CNR-IMM, Zona Industriale Strada VIII, 5, 95121, Catania, Italy
| | - Antoine Ronda
- Aix Marseille Univ, Université de Toulon, CNRS, IM2NP, Marseille, France
| | - Isabelle Berbezier
- Aix Marseille Univ, Université de Toulon, CNRS, IM2NP, Marseille, France
| | - Marco Abbarchi
- Aix Marseille Univ, Université de Toulon, CNRS, IM2NP, Marseille, France.
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6
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Surface, Interface, and Temperature Effects on the Phase Separation and Nanoparticle Self Assembly of Bi-Metallic Ni0.5Ag0.5: A Molecular Dynamics Study. NANOMATERIALS 2019; 9:nano9071040. [PMID: 31330888 PMCID: PMC6669487 DOI: 10.3390/nano9071040] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 07/10/2019] [Accepted: 07/19/2019] [Indexed: 11/16/2022]
Abstract
Classical molecular dynamics (MD) simulations were used to investigate how free surfaces, as well as supporting substrates, affect phase separation in a NiAg alloy. Bulk samples, droplets, and droplets deposited on a graphene substrate were investigated at temperatures that spanned regions of interest in the bulk NiAg phase diagram, i.e., miscible and immiscible liquid, liquid-crystal, and crystal-crystal regions. Using MD simulations to cool down a bulk sample from 3000 K to 800 K, it was found that phase separation below 2400 K takes place in agreement with the phase diagram. When free surface effects were introduced, phase separation was accompanied by a core-shell transformation: spherical droplets created from the bulk samples became core-shell nanoparticles with a shell made mostly of Ag atoms and a core made of Ni atoms. When such droplets were deposited on a graphene substrate, the phase separation was accompanied by Ni layering at the graphene interface and Ag at the vacuum interface. Thus, it should be possible to create NiAg core-shell and layer-like nanostructures by quenching liquid NiAg samples on tailored substrates. Furthermore, interesting bimetallic nanoparticle morphologies might be tuned via control of the surface and interface energies and chemical instabilities of the system.
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7
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Qi D, Tang S, Wang L, Dai S, Shen X, Wang C, Chen S. Pulse laser-induced size-controllable and symmetrical ordering of single-crystal Si islands. NANOSCALE 2018; 10:8133-8138. [PMID: 29671438 DOI: 10.1039/c8nr00210j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Optically electric- and magnetic resonance-induced dielectric nanostructures have garnered significant attention due to applications as tunable electronic and optoelectronic device. In this letter, we describe an ultrafast and large-area method to construct symmetrical and single-crystal Si island structures directly on Si substrates by a pulse laser dewetting method. The tunable surface electric field intensity distribution could convert the stochastic dewetting process into a deterministic process (classical dipole mode and Mie resonance dipole mode) on predefined Si pit arrays via laser dewetting. Under this condition, these pre-patterned Si substrate structures not only induced high spatial ordering of islands, but also improved their size uniformity. By adjusting the laser fluence, the diameter of the single-crystal Si islands could be selected in the range 41.7-147.1 nm.
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Affiliation(s)
- Dongfeng Qi
- Laboratory of Infrared Materials and Devices, The Research Institute of Advanced Technologies, Ningbo University, Ningbo, Zhejiang 315211, People's Republic of China.
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Wang L, Rho Y, Shou W, Hong S, Kato K, Eliceiri M, Shi M, Grigoropoulos CP, Pan H, Carraro C, Qi D. Programming Nanoparticles in Multiscale: Optically Modulated Assembly and Phase Switching of Silicon Nanoparticle Array. ACS NANO 2018; 12:2231-2241. [PMID: 29481049 DOI: 10.1021/acsnano.8b00198] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Manipulating and tuning nanoparticles by means of optical field interactions is of key interest for nanoscience and applications in electronics and photonics. We report scalable, direct, and optically modulated writing of nanoparticle patterns (size, number, and location) of high precision using a pulsed nanosecond laser. The complex nanoparticle arrangement is modulated by the laser pulse energy and polarization with the particle size ranging from 60 to 330 nm. Furthermore, we report fast cooling-rate induced phase switching of crystalline Si nanoparticles to the amorphous state. Such phase switching has usually been observed in compound phase change materials like GeSbTe. The ensuing modification of atomic structure leads to dielectric constant switching. Based on these effects, a multiscale laser-assisted method of fabricating Mie resonator arrays is proposed. The number of Mie resonators, as well as the resonance peaks and dielectric constants of selected resonators, can be programmed. The programmable light-matter interaction serves as a mechanism to fabricate optical metasurfaces, structural color, and multidimensional optical storage devices.
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Affiliation(s)
- Letian Wang
- Laser Thermal Laboratory, Department of Mechanical Engineering , University of California , Berkeley , California 94720-1740 , United States
| | - Yoonsoo Rho
- Laser Thermal Laboratory, Department of Mechanical Engineering , University of California , Berkeley , California 94720-1740 , United States
| | - Wan Shou
- Department of Mechanical and Aerospace Engineering , Missouri University of Science and Technology , Rolla , Missouri 65401 , United States
| | - Sukjoon Hong
- Laser Thermal Laboratory, Department of Mechanical Engineering , University of California , Berkeley , California 94720-1740 , United States
- Department of Mechanical Engineering , Hanyang University , 55 Hanyangdaehak-ro, 20 Sangnok-gu , Ansan , Gyeonggi-do 15588 , Republic of Korea
| | - Kimihiko Kato
- Department of Electrical Engineering and Information Systems , The University of Tokyo , Tokyo 113-0032 , Japan
| | - Matthew Eliceiri
- Laser Thermal Laboratory, Department of Mechanical Engineering , University of California , Berkeley , California 94720-1740 , United States
| | - Meng Shi
- Laser Thermal Laboratory, Department of Mechanical Engineering , University of California , Berkeley , California 94720-1740 , United States
- School of Energy and Power Engineering , Xi'an Jiaotong University , Xi'an 710049 , People's Republic of China
| | - Costas P Grigoropoulos
- Laser Thermal Laboratory, Department of Mechanical Engineering , University of California , Berkeley , California 94720-1740 , United States
| | - Heng Pan
- Department of Mechanical and Aerospace Engineering , Missouri University of Science and Technology , Rolla , Missouri 65401 , United States
| | - Carlo Carraro
- Department of Chemical and Biomolecular Engineering , University of California , Berkeley , California 94720-1462 , United States
| | - Dongfeng Qi
- Laser Thermal Laboratory, Department of Mechanical Engineering , University of California , Berkeley , California 94720-1740 , United States
- Laboratory of Infrared Materials and Devices, The Research Institute of Advanced Technologies , Ningbo University , Ningbo , Zhejiang 315211 , People's Republic of China
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9
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Hartnett CA, Seric I, Mahady K, Kondic L, Afkhami S, Fowlkes JD, Rack PD. Exploiting the Marangoni Effect To Initiate Instabilities and Direct the Assembly of Liquid Metal Filaments. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:8123-8128. [PMID: 28731352 DOI: 10.1021/acs.langmuir.7b01655] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Utilization of the Marangoni effect in a liquid metal is investigated, focusing on initiating instabilities to direct material assembly via the Rayleigh-Plateau instability. Thin (2 nm) copper (Cu) films are lithographically patterned onto thick (12 nm) nickel (Ni) strips to induce a surface energy gradient at the maximum wavelength of the filament instability predicted by Rayleigh-Plateau instability analysis. The pattern is irradiated with an 18 ns pulsed laser such that the pattern melts and the resultant Ni-Cu surface tension gradient induces Marangoni flows due to the difference in surface energies. The experimental results, supported by extensive direct numerical simulations, demonstrate that the Marangoni flow exceeds the capillary flow induced by the initial geometry, guiding instabilities such that final nanoparticle location is directed toward the regions of higher surface energy (Ni regions). Our work shows a route for manipulation, by means of the Marangoni effect, to direct the evolution of the surface instabilities and the resulting pattern formation.
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Affiliation(s)
- C A Hartnett
- Department of Physics & Astronomy, University of Tennessee , 1408 Circle Drive, Knoxville, Tennessee 37996, United States
| | - I Seric
- Department of Mathematical Sciences, New Jersey Institute of Technology , Newark, New Jersey 07102, United States
| | - K Mahady
- Department of Materials Science & Engineering, University of Tennessee , Knoxville, Tennessee 37996, United States
| | - L Kondic
- Department of Mathematical Sciences, New Jersey Institute of Technology , Newark, New Jersey 07102, United States
| | - S Afkhami
- Department of Mathematical Sciences, New Jersey Institute of Technology , Newark, New Jersey 07102, United States
| | - J D Fowlkes
- Department of Materials Science & Engineering, University of Tennessee , Knoxville, Tennessee 37996, United States
- Center for Nanophase Materials Sciences, Nanofabrication Research Laboratory, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States
| | - P D Rack
- Department of Materials Science & Engineering, University of Tennessee , Knoxville, Tennessee 37996, United States
- Center for Nanophase Materials Sciences, Nanofabrication Research Laboratory, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States
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10
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Ravazzoli PD, Cuellar I, González AG, Diez JA. Wetting and dewetting processes in the axial retraction of liquid filaments. Phys Rev E 2017; 95:053111. [PMID: 28618593 DOI: 10.1103/physreve.95.053111] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Indexed: 06/07/2023]
Abstract
We study the hydrodynamic mechanisms involved in the motion of the contact line formed at the end region of a liquid filament laying on a planar and horizontal substrate. Since the flow develops under partially wetting conditions, the tip of the filament recedes and forms a bulged region (head) that subsequently develops a neck region behind it. Later the neck breaks up leading to a separated drop, while the rest of the filament restarts the sequence. One main feature of this flow is that the whole dynamics and final drop shapes are strongly influenced by the hysteresis of the contact angle typical in most of the liquid-substrate systems. The time evolution till breakup is studied experimentally and pictured in terms of a hybrid wettability theory which involves the Cox-Voinov hydrodynamic approach combined with the molecular kinetic theory developed by Blake. The parameters of this theory are determined for our liquid-substrate system (silicone oil-coated glass). The experimental results of the retracting filament are described in terms of a simple heuristic model and compared with numerical simulations of the full Navier-Stokes equations. This study is of special interest in the context of pulsed laser-induced dewetting.
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Affiliation(s)
- Pablo D Ravazzoli
- Instituto de Física Arroyo Seco, Universidad Nacional del Centro de la Provincia de Buenos Aires, and CIFICEN-CONICET-CICPBA, Pinto 399, 7000 Tandil, Argentina
| | - Ingrith Cuellar
- Instituto de Física Arroyo Seco, Universidad Nacional del Centro de la Provincia de Buenos Aires, and CIFICEN-CONICET-CICPBA, Pinto 399, 7000 Tandil, Argentina
| | - Alejandro G González
- Instituto de Física Arroyo Seco, Universidad Nacional del Centro de la Provincia de Buenos Aires, and CIFICEN-CONICET-CICPBA, Pinto 399, 7000 Tandil, Argentina
| | - Javier A Diez
- Instituto de Física Arroyo Seco, Universidad Nacional del Centro de la Provincia de Buenos Aires, and CIFICEN-CONICET-CICPBA, Pinto 399, 7000 Tandil, Argentina
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11
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Wu G, Zhao Y, Li Y, Zhang F, Zhao J. Assembled and isolated Bi5O7I nanowires with good photocatalytic activities. CrystEngComm 2017. [DOI: 10.1039/c7ce00439g] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Naffouti M, David T, Benkouider A, Favre L, Delobbe A, Ronda A, Berbezier I, Abbarchi M. Templated Solid-State Dewetting of Thin Silicon Films. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2016; 12:6115-6123. [PMID: 27717242 DOI: 10.1002/smll.201601744] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Revised: 07/23/2016] [Indexed: 06/06/2023]
Abstract
Thin film dewetting can be efficiently exploited for the implementation of functionalized surfaces over very large scales. Although the formation of sub-micrometer sized crystals via solid-state dewetting represents a viable method for the fabrication of quantum dots and optical meta-surfaces, there are several limitations related to the intrinsic features of dewetting in a crystalline medium. Disordered spatial organization, size, and shape fluctuations are relevant issues not properly addressed so far. This study reports on the deterministic nucleation and precise positioning of Si- and SiGe-based nanocrystals by templated solid-state dewetting of thin silicon films. The dewetting dynamics is guided by pattern size and shape taking full control over number, size, shape, and relative position of the particles (islands dimensions and relative distances are in the hundreds nm range and fluctuate ≈11% for the volumes and ≈5% for the positioning).
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Affiliation(s)
- Meher Naffouti
- Aix Marseille Université, CNRS, Université de Toulon, IM2NP UMR 7334, 13397, Marseille, France
- Laboratoire de Micro-optoélectronique et Nanostructures, Faculté des Sciences de Monastir, Université de Monastir, 5019, Monastir, Tunisia
| | - Thomas David
- Aix Marseille Université, CNRS, Université de Toulon, IM2NP UMR 7334, 13397, Marseille, France
| | - Abdelmalek Benkouider
- Aix Marseille Université, CNRS, Université de Toulon, IM2NP UMR 7334, 13397, Marseille, France
| | - Luc Favre
- Aix Marseille Université, CNRS, Université de Toulon, IM2NP UMR 7334, 13397, Marseille, France
| | | | - Antoine Ronda
- Aix Marseille Université, CNRS, Université de Toulon, IM2NP UMR 7334, 13397, Marseille, France
| | - Isabelle Berbezier
- Aix Marseille Université, CNRS, Université de Toulon, IM2NP UMR 7334, 13397, Marseille, France
| | - Marco Abbarchi
- Aix Marseille Université, CNRS, Université de Toulon, IM2NP UMR 7334, 13397, Marseille, France
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Hartnett CA, Mahady K, Fowlkes JD, Afkhami S, Kondic L, Rack PD. Instability of Nano- and Microscale Liquid Metal Filaments: Transition from Single Droplet Collapse to Multidroplet Breakup. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:13609-13617. [PMID: 26595519 DOI: 10.1021/acs.langmuir.5b03598] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We carry out experimental and numerical studies to investigate the collapse and breakup of finite size, nano- and microscale, liquid metal filaments supported on a substrate. We find the critical dimensions below which filaments do not break up but rather collapse to a single droplet. The transition from collapse to breakup can be described as a competition between two fluid dynamic phenomena: the capillary driven end retraction and the Rayleigh-Plateau type instability mechanism that drives the breakup. We focus on the unique spatial and temporal transition region between these two phenomena using patterned metallic thin film strips and pulsed-laser-induced dewetting. The experimental results are compared to an analytical model proposed by Driessen et al. and modified to include substrate interactions. In addition, we report the results of numerical simulations based on a volume-of-fluid method to provide additional insight and highlight the importance of liquid metal resolidification, which reduces inertial effects.
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Affiliation(s)
| | - K Mahady
- Department of Mathematical Sciences, New Jersey Institute of Technology , Newark, New Jersey 07102, United States
| | - J D Fowlkes
- Center for Nanophase Materials Sciences, Nanofabrication Research Laboratory, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States
| | - S Afkhami
- Department of Mathematical Sciences, New Jersey Institute of Technology , Newark, New Jersey 07102, United States
| | - L Kondic
- Department of Mathematical Sciences, New Jersey Institute of Technology , Newark, New Jersey 07102, United States
| | - P D Rack
- Center for Nanophase Materials Sciences, Nanofabrication Research Laboratory, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States
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Hein M, Fleury JB, Seemann R. Coexistence of different droplet generating instabilities: new breakup regimes of a liquid filament. SOFT MATTER 2015; 11:5246-5252. [PMID: 26053325 DOI: 10.1039/c5sm00736d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The coexistence of multiple droplet breakup instabilities in a Step-emulsification geometry is studied. A liquid filament, which is confined in one dimension by channel walls and surrounded by a co-flowing immiscible continuous phase, decays into droplets when subject to a sudden release of confinement. Depending on the filament aspect ratio and liquid flow rates, an unexpectedly rich variety of droplet breakup regimes is found. All of these breakup regimes are composed of two basic instabilities, i.e. a step- and a jet-instability, that coexist in various combinations on the same filament. Surprisingly, even an asymmetric breakup regime is found, producing droplet families of significantly different diameters, while the filament is subject to a fully symmetric flow field. We suggest key physical principles explaining the spontaneous symmetry breaking and the transitions between individual droplet breakup regimes. The particular ability to produce distinct droplet families from a single filament is demonstrated to allow for simultaneous concentration and encapsulation of particles into one droplet family while excess bulk liquid is released into another family of droplets.
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Affiliation(s)
- Michael Hein
- Saarland University, Experimental Physics, Saarbrücken, Germany.
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Focused-ion-beam induced rayleigh-plateau instability for diversiform suspended nanostructure fabrication. Sci Rep 2015; 5:8236. [PMID: 25649055 PMCID: PMC4650821 DOI: 10.1038/srep08236] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2014] [Accepted: 01/13/2015] [Indexed: 11/08/2022] Open
Abstract
A novel method for fabricating diversiform suspended nanostructures is reported. The method utilizes focused-ion-beam (FIB) induced material redistribution and Rayleigh-Plateau instability, which determine the resulting shapes of formed nanostructures. By choosing target materials, their predefined patterns as well as FIB settings, we have achieved parallel nanofabrication of various kinds including nanostrings, nanobead chains and nanopore membranes with smooth surfaces due to the self-perfection effect of the material redistribution upon the minimization of system free energy. The diameters of the nanostrings and nanopores reach about 10 nm and 200 nm, respectively. The average period of the nanobead chains is 250 nm.
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McKeown JT, Wu Y, Fowlkes JD, Rack PD, Campbell GH. Simultaneous in-situ synthesis and characterization of Co@Cu core-shell nanoparticle arrays. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2015; 27:1060-1065. [PMID: 25534954 DOI: 10.1002/adma.201404374] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Revised: 11/18/2014] [Indexed: 06/04/2023]
Abstract
Core-shell particle ensembles are fabricated by pulsed-laser-induced dewetting of initially continuous, ultrathin alloy films through a combination of morphological and chemical instability. The synthesis of these arrays is monitored in situ with high spatial and temporal resolutions, which, when combined with ex situ composition analysis, provides insight to the morphological and chemical evolution pathways leading to core-shell particle formation.
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Affiliation(s)
- Joseph T McKeown
- Materials Science Division, Lawrence Livermore National Laboratory, Livermore, CA, 94550, USA
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