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Damerchi E, Oras S, Butanovs E, Liivlaid A, Antsov M, Polyakov B, Trausa A, Zadin V, Kyritsakis A, Vidal L, Mougin K, Pikker S, Vlassov S. Heat-induced morphological changes in silver nanowires deposited on a patterned silicon substrate. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2024; 15:435-446. [PMID: 38711582 PMCID: PMC11070972 DOI: 10.3762/bjnano.15.39] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Accepted: 03/22/2024] [Indexed: 05/08/2024]
Abstract
Metallic nanowires (NWs) are sensitive to heat treatment and can split into shorter fragments within minutes at temperatures far below the melting point. This process can hinder the functioning of NW-based devices that are subject to relatively mild temperatures. Commonly, heat-induced fragmentation of NWs is attributed to the interplay between heat-enhanced diffusion and Rayleigh instability. In this work, we demonstrated that contact with the substrate plays an important role in the fragmentation process and can strongly affect the outcome of the heat treatment. We deposited silver NWs onto specially patterned silicon wafers so that some NWs were partially suspended over the holes in the substrate. Then, we performed a series of heat-treatment experiments and found that adhered and suspended parts of NWs behave differently under the heat treatment. Moreover, depending on the heat-treatment process, fragmentation in either adhered or suspended parts can dominate. Experiments were supported by finite element method and molecular dynamics simulations.
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Affiliation(s)
- Elyad Damerchi
- Institute of Technology, University of Tartu, Nooruse 1, 50411 Tartu, Estonia
| | - Sven Oras
- Institute of Technology, University of Tartu, Nooruse 1, 50411 Tartu, Estonia
| | - Edgars Butanovs
- Institute of Technology, University of Tartu, Nooruse 1, 50411 Tartu, Estonia
- Institute of Solid State Physics, University of Latvia, Kengaraga 8, LV-1063 Riga, Latvia
| | - Allar Liivlaid
- Institute of Technology, University of Tartu, Nooruse 1, 50411 Tartu, Estonia
| | - Mikk Antsov
- Estonian Military Academy, Riia 12, 51010 Tartu, Estonia
| | - Boris Polyakov
- Institute of Solid State Physics, University of Latvia, Kengaraga 8, LV-1063 Riga, Latvia
| | - Annamarija Trausa
- Institute of Solid State Physics, University of Latvia, Kengaraga 8, LV-1063 Riga, Latvia
| | - Veronika Zadin
- Institute of Technology, University of Tartu, Nooruse 1, 50411 Tartu, Estonia
| | - Andreas Kyritsakis
- Institute of Technology, University of Tartu, Nooruse 1, 50411 Tartu, Estonia
| | - Loïc Vidal
- Institute of Materials Science of Mulhouse, CNRS – UMR 7361, University of Haute-Alsace, France
| | - Karine Mougin
- Institute of Materials Science of Mulhouse, CNRS – UMR 7361, University of Haute-Alsace, France
| | - Siim Pikker
- Institute of Physics, University of Tartu, W. Ostwaldi 1, 50411 Tartu, Estonia
| | - Sergei Vlassov
- Institute of Physics, University of Tartu, W. Ostwaldi 1, 50411 Tartu, Estonia
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Gottis S, Laurent R, Collière V, Caminade AM. Straightforward synthesis of gold nanoparticles by adding water to an engineered small dendrimer. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2020; 11:1110-1118. [PMID: 32802713 PMCID: PMC7404285 DOI: 10.3762/bjnano.11.95] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 06/26/2020] [Indexed: 05/10/2023]
Abstract
A small water-soluble phosphorus-containing dendrimer was engineered for the complexation of gold(I) and for its reduction under mild conditions. Gold nanoparticles were obtained as colloidal suspensions simply and only when the powdered form of this dendrimer was dissolved in water, as shown by transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy (EDX) analyses. The dendrimers acted simultaneously as mild reducers and as nanoreactors, favoring the self-assembly of gold atoms and promoting the growth and stabilization of isolated gold nanoparticles. Thus, an unprecedented method for the synthesis of colloidal suspensions of water-soluble gold nanoparticles was proposed in this work.
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Affiliation(s)
- Sébastien Gottis
- Laboratoire de Chimie de Coordination du CNRS, 205 Route de Narbonne, BP 44099, 31077 Toulouse Cedex 4, France
- LCC-CNRS, Université de Toulouse, CNRS, Toulouse, France
- Laboratoire de Réactivité et Chimie des Solides, UMR CNRS/UPJV 7314, 33 rue St Leu, 80039 Amiens cedex 1, France
| | - Régis Laurent
- Laboratoire de Chimie de Coordination du CNRS, 205 Route de Narbonne, BP 44099, 31077 Toulouse Cedex 4, France
- LCC-CNRS, Université de Toulouse, CNRS, Toulouse, France
| | - Vincent Collière
- Laboratoire de Chimie de Coordination du CNRS, 205 Route de Narbonne, BP 44099, 31077 Toulouse Cedex 4, France
- LCC-CNRS, Université de Toulouse, CNRS, Toulouse, France
| | - Anne-Marie Caminade
- Laboratoire de Chimie de Coordination du CNRS, 205 Route de Narbonne, BP 44099, 31077 Toulouse Cedex 4, France
- LCC-CNRS, Université de Toulouse, CNRS, Toulouse, France
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