1
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Yang H, Jiang X, Zhang M, Li BQ, Wang J, Han Y. Silicon eccentric shell nanoparticles fabricated by template-assisted deposition for Mie magnetic resonances enhanced light confinement. NANOTECHNOLOGY 2024; 35:235301. [PMID: 38430566 DOI: 10.1088/1361-6528/ad2f76] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Accepted: 02/28/2024] [Indexed: 03/04/2024]
Abstract
We report a structure of silicon eccentric shell particles array, fabricated by the SiO2particles monolayer array assisted deposition of amorphous Si, for high-efficiency light confinement. The SiO2particles monolayer array is tailored to regulate its interparticle distance, followed by silicon film deposition to obtain silicon eccentric shell arrays with positive and negative off-center distancee. We studied the Mie resonances of silicon solid sphere, concentric shell, eccentric shell and observed that the eccentric shell with positive off-centeresupports superior light confinement because of the enhanced Mie magnetic resonances. Spectroscopic measurements and finite difference time domain simulations were conducted to examine the optical performance of the eccentric shell particles array. Results show that the Mie magnetic resonance wavelength can be easily regulated by the size of the inner void of the silicon shell to realize tunable enhanced light confinement. It was found silicon shell withD= 460/520 nm offered high enhanced light absorption efficiency at wavelength ofλ= 830 nm, almost beyond the bandgap of the amorphous silicon.
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Affiliation(s)
- Huan Yang
- School of Physics, Xidian University, Xi'an, 710071, People's Republic of China
- Guangzhou Institute of Technology, Xidian University, Guangzhou, 510555, People's Republic of China
| | - Xinbing Jiang
- School of Chemistry, Xi'an Jiaotong University, Xi'an, 710049, People's Republic of China
| | - Manman Zhang
- Department of Mechanical Engineering, University of Michigan, Dearborn, MI, 48128, United States of America
| | - Ben Q Li
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, 710049, People's Republic of China
| | - Jiajie Wang
- School of Physics, Xidian University, Xi'an, 710071, People's Republic of China
| | - Yiping Han
- School of Physics, Xidian University, Xi'an, 710071, People's Republic of China
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2
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Koyroytsaltis-McQuire DJP, Kumar R, Javorfi T, Siligardi G, Gadegaard N, Kadodwala M. Tuning dipolar and multipolar resonances of chiral silicon nanostructures for control of near field superchirality. NANOSCALE 2023; 16:110-122. [PMID: 38063462 DOI: 10.1039/d3nr05285k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2023]
Abstract
Chiral materials display a property called optical activity, which is the capability to interact differentially with left and right circularly polarised light. This leads to the ability to manipulate the polarisation state of light, which has a broad range of applications spanning from energy efficient displays to quantum technologies. Both synthesised and engineered chiral nanomaterials are exploited in such devices. The design strategy for optimising the optical activity of a chiral material is typically based on maximising a single parameter, the electric dipole-magnetic dipole response. Here we demonstrate an alternative approach of controlling optical activity by manipulating both the dipole and multipolar response of a nanomaterial. This provides an additional parameter for material design, affording greater flexibility. The exemplar systems used to illustrate the strategy are nanofabricated chiral silicon structures. The multipolar response of the structures, and hence their optical activity, can be controlled simply by varying their height. This phenomenon allows optical activity and the creation of so called superchiral fields, with enhanced asymmetries, to be controlled over a broader wavelength range, than is achievable with just the electric dipole-magnetic dipole response. This work adds to the material design toolbox providing a route to novel nanomaterials for optoelectronics and sensing applications.
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Affiliation(s)
| | - Rahul Kumar
- School of Chemistry, University of Glasgow, Glasgow, G12 8QQ, UK.
| | - Tamas Javorfi
- Diamond Light Source Ltd, Harwell Science and Innovation Campus, Didcot, UK
| | - Giuliano Siligardi
- Diamond Light Source Ltd, Harwell Science and Innovation Campus, Didcot, UK
| | - Nikolaj Gadegaard
- School of Engineering, Rankine Building, University of Glasgow, Glasgow G12 8LT, UK
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3
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Cibaka-Ndaya C, O’Connor K, Idowu EO, Parker MA, Lebraud E, Lacomme S, Montero D, Camacho PS, Veinot JGC, Roiban IL, Drisko GL. Understanding the Formation Mechanisms of Silicon Particles from the Thermal Disproportionation of Hydrogen Silsesquioxane. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2023; 35:8551-8560. [PMID: 37901141 PMCID: PMC10601469 DOI: 10.1021/acs.chemmater.3c01448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Revised: 09/02/2023] [Indexed: 10/31/2023]
Abstract
Crystalline silicon particles sustaining Mie resonances are readily obtained from the thermal processing of hydrogen silsesquioxane (HSQ). Here, the mechanisms involved in silicon particle formation and growth from HSQ are investigated through real-time in situ analysis using an environmental transmission electron microscope and X-ray diffractometer. The nucleation of Si nanodomains is observed starting around 1000 °C. For the first time, a highly mobile intermediate phase is experimentally observed, thus demonstrating a previously unknown growth mechanism. At least two growth processes occur simultaneously: the coalescence of small particles into larger particles and growth mode by particle displacement through the matrix toward the HSQ grain surface. Postsynthetic characterization by scanning electron microscopy further supports the latter growth mechanism. The gaseous environment employed during synthesis impacts particle formation and growth under both in situ and ex situ conditions, impacting the particle yield and structural homogeneity. Understanding the formation mechanisms of particles provides promising pathways for reducing the energy cost of this synthetic route.
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Affiliation(s)
| | - Kevin O’Connor
- Department
of Chemistry, University of Alberta, Edmonton, Alberta T6G 2G2, Canada
| | | | - Megan A. Parker
- Univ.
Bordeaux, CNRS, Bordeaux INP, ICMCB, UMR 5026, F-33600 Pessac, France
| | - Eric Lebraud
- Univ.
Bordeaux, CNRS, Bordeaux INP, ICMCB, UMR 5026, F-33600 Pessac, France
| | - Sabrina Lacomme
- Univ.
Bordeaux, CNRS, INSERM, Bordeaux Imaging Center, UAR 3420, F-33600 Pessac, France
| | - David Montero
- Sorbonne
Université, CNRS, Fédération de Chimie et Matériaux
de Paris-Centre, FR 2482, 75252 Paris, France
| | - Paula Sanz Camacho
- Univ.
Bordeaux, CNRS, Bordeaux INP, ICMCB, UMR 5026, F-33600 Pessac, France
| | | | - Ioan-Lucian Roiban
- Univ.
Lyon, INSA Lyon, Université Claude Bernard Lyon 1, CNRS, MATEIS,
UMR5510, 69621 Villeurbanne, France
| | - Glenna L. Drisko
- Univ.
Bordeaux, CNRS, Bordeaux INP, ICMCB, UMR 5026, F-33600 Pessac, France
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4
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Eslamisaray MA, Wray PR, Lee Y, Nelson GM, Ilic O, Atwater HA, Kortshagen UR. A Single-Step Bottom-up Approach for Synthesis of Highly Uniform Mie-Resonant Crystalline Semiconductor Particles at Visible Wavelengths. NANO LETTERS 2023; 23:1930-1937. [PMID: 36815711 DOI: 10.1021/acs.nanolett.2c05084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Optically Mie-resonant crystalline silicon nanoparticles have long attracted interest for their unique scattering behaviors. Here, we report a bottom-up nonthermal plasma process that produces highly monodisperse particles, with diameters controllable between 60 and 214 nm, by temporarily electrostatically trapping nanoparticles inside a continuous-flow plasma reactor. The particle size is tuned by adjusting the gas residence time in the reactor. By dispersing the nanoparticles in water, optical extinction measurements indicate colloidal solutions of a particle-based metafluid in which particles support both strong magnetic and electric dipole resonances at visible wavelengths. The spectral overlap of the electric and magnetic resonances gives rise to directional Kerker scattering. The extinction measurements show excellent agreement with Mie theory, supporting the idea that the fabrication process enables particles with narrow distributions in size, shape, and composition. This single-step gas-phase process can also produce Mie-resonant nanoparticles of dielectric materials other than silicon and directly deposit them on the desired substrates.
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Affiliation(s)
- Mohammad Ali Eslamisaray
- Department of Mechanical Engineering, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Parker R Wray
- Department of Electrical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Yeonjoo Lee
- Department of Mechanical Engineering, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Gunnar M Nelson
- Department of Mechanical Engineering, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Ognjen Ilic
- Department of Mechanical Engineering, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Harry A Atwater
- Thomas J. Watson Laboratories of Applied Physics, California Institute of Technology, Pasadena, California 91125, United States
| | - Uwe R Kortshagen
- Department of Mechanical Engineering, University of Minnesota, Minneapolis, Minnesota 55455, United States
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5
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Goncharova IK, Tukhvatshin RS, Novikov RA, Volodin AD, Korlyukov AA, Lakhtin VG, Arzumanyan A. Complementary Cooperative Catalytic Systems in the Aerobic Oxidation of a Wide Range of Si–H‐Reagents to Si–OH‐Products: From Monomers to Oligomers and Polymers. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200871] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Irina K. Goncharova
- A N Nesmeyanov Institute of Organoelement Compounds RAS: Institut elementoorganiceskih soedinenij imeni A N Nesmeanova RAN Organoelements compounds RUSSIAN FEDERATION
| | - Rinat S. Tukhvatshin
- A N Nesmeyanov Institute of Organoelement Compounds RAS: Institut elementoorganiceskih soedinenij imeni A N Nesmeanova RAN Organoelements compounds RUSSIAN FEDERATION
| | - Roman A. Novikov
- Zelinsky Institute of Organic Chemistry RAS: Institut organiceskoj himii imeni N D Zelinskogo RAN Organic chemistry RUSSIAN FEDERATION
| | - Alexander D. Volodin
- A N Nesmeyanov Institute of Organoelement Compounds RAS: Institut elementoorganiceskih soedinenij imeni A N Nesmeanova RAN Organoelements compounds RUSSIAN FEDERATION
| | - Alexander A. Korlyukov
- A N Nesmeyanov Institute of Organoelement Compounds RAS: Institut elementoorganiceskih soedinenij imeni A N Nesmeanova RAN Organoelements compounds RUSSIAN FEDERATION
| | - Valentin G. Lakhtin
- A V Topchiev Institute of Petrochemical Synthesis Russian Academy of Sciences: Institut neftehimiceskogo sinteza imeni A V Topcieva Rossijskaa akademia nauk Organoelements compounds RUSSIAN FEDERATION
| | - Ashot Arzumanyan
- A N Nesmeyanov Institute of Organoelement Compounds RAS: Institut elementoorganiceskih soedinenij imeni A N Nesmeanova RAN Chemistry 28 Vavilov str. 119991 Moscow RUSSIAN FEDERATION
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6
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Lermusiaux L, Roach L, Baron A, Treguer-Delapierre M. Bottom-up synthesis of meta-atoms as building blocks in self-assembled metamaterials : Recent advances and perspectives. NANO EXPRESS 2022. [DOI: 10.1088/2632-959x/ac6889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Abstract
Meta-atoms interact with light in interesting ways and offer a large range of exciting properties. They exhibit optical properties inaccessible by natural atoms but their fabrication is notoriously difficult because of the precision required. In this perspective, we present the current research landscape in making meta-atoms, with a focus on the most promising self-assembly approaches and main challenges to overcome, for the development of materials with novel properties at optical frequencies.
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7
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Roach L, Hereu A, Lalanne P, Duguet E, Tréguer-Delapierre M, Vynck K, Drisko GL. Controlling disorder in self-assembled colloidal monolayers via evaporative processes. NANOSCALE 2022; 14:3324-3345. [PMID: 35174843 PMCID: PMC8900142 DOI: 10.1039/d1nr07814c] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Accepted: 01/12/2022] [Indexed: 04/14/2023]
Abstract
Monolayers of assembled nano-objects with a controlled degree of disorder hold interest in many optical applications, including photovoltaics, light emission, sensing, and structural coloration. Controlled disorder can be achieved through either top-down or bottom-up approaches, but the latter is more suited to large-scale, low-cost fabrication. Disordered colloidal monolayers can be assembled through evaporatively driven convective assembly, a bottom-up process with a wide range of parameters impacting particle placement. Motivated by the photonic applications of such monolayers, in this review we discuss the quantification of monolayer disorder, and the assembly methods that have been used to produce them. We review the impact of particle and solvent properties, as well as the use of substrate patterning, to create the desired spatial distributions of particles.
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Affiliation(s)
- Lucien Roach
- CNRS, Univ. Bordeaux, Bordeaux INP, ICMCB, UMR 5026, F-33600 Pessac, France.
| | - Adrian Hereu
- CNRS, Univ. Bordeaux, Bordeaux INP, ICMCB, UMR 5026, F-33600 Pessac, France.
| | - Philippe Lalanne
- IOGS, Univ. Bordeaux, CNRS, LP2N, UMR 5298, F-33400 Talence, France
| | - Etienne Duguet
- CNRS, Univ. Bordeaux, Bordeaux INP, ICMCB, UMR 5026, F-33600 Pessac, France.
| | | | - Kevin Vynck
- Univ. Claude Bernard Lyon 1, CNRS, iLM, UMR 5306, F-69622 Villeurbanne, France.
| | - Glenna L Drisko
- CNRS, Univ. Bordeaux, Bordeaux INP, ICMCB, UMR 5026, F-33600 Pessac, France.
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8
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Lermusiaux L, Mazel A, Carretero-Genevrier A, Sanchez C, Drisko GL. Metal-Induced Crystallization in Metal Oxides. Acc Chem Res 2022; 55:171-185. [PMID: 34979086 PMCID: PMC8772270 DOI: 10.1021/acs.accounts.1c00592] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Indexed: 11/28/2022]
Abstract
ConspectusThe properties of a material depend upon its physical characteristics, one of these being its crystalline state. Next generation solid-state technologies will integrate crystalline oxides into thermal sensitive processes and composite materials. Crystallization of amorphous phases of metal oxides in the solid state typically requires substantial energy input to induce the amorphous to crystalline phase transformation. In the case of silica, the transformation to α-quartz in a furnace occurs above 1300 °C and that of titania, above 400 °C. These calcination processes are costly in energy but also often degrade complex material architectures or compositions.Thus, low temperature crystallization techniques are required that preserve macro- and mesostructures and complex elemental composition (e.g., organic-, metal-, and semiconductor-metal oxide hybrids/composites). Some solution-based techniques exist to directly fabricate crystalline metal oxides. However, these are not always compatible with the specificities of the system or industrial constraints. A postsynthetic, solid-state approach that reduces crystallization temperature in metal oxides is metal-induced crystallization (MIC).MIC is the introduction of catalytic amounts of a cation, which can be an s-block, p-block, or d-block cation, that migrates through the solid metal oxide lattice. The cation is thought to temporarily break metal oxide bonds, allowing [MOx] polyhedra to rotate and reform bonds with neighboring [MOx] groups in a lower energy crystalline phase. Depending on the system, the cation can favor or defavor the formation of a particular crystalline phase, providing a means to tune the purity and crystalline phase ratios. An advantage of MIC is that, although the crystallization occurs in the solid state, the crystallization process can be accomplished for particle suspensions in liquid media. In this case, the energy required to induce the crystallization can come from, for example, a microwave or an ultrasound bath. The crystallization of particles in suspension avoids aggregation from particle-particle sintering. In the case of thin films, the energy for crystallization typically comes from a laser or calcination.MIC is only recently being used as a low temperature metal oxide crystallization technique, despite being widely used in the semiconductor industry. Here, the mechanism and previous studies in MIC are presented for titania, silica, and other oxides. The beauty of this technique is that it is extremely easy to employ: cations can be incorporated into the system postsynthetically and then are often expelled from the lattice upon phase conversion. We expect MIC to enrich materials for photochromic, optoelectronic, catalyst, biological, and other applications.
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Affiliation(s)
- Laurent Lermusiaux
- Univ.
Lyon, CNRS, École Normale Supérieure de Lyon, Laboratoire de Chimie, UMR 5182, 46 allée d’Italie, F-69007 Lyon, France
| | - Antoine Mazel
- CNRS,
Univ. Bordeaux, Bordeaux INP, ICMCB, UMR 5026, F-33600 Pessac, France
| | - Adrian Carretero-Genevrier
- Institut
d’Electronique et des Systèmes (IES), CNRS, Université de Montpellier, 860 Rue de Saint Priest, Montpellier 34095, France
| | - Clément Sanchez
- Laboratoire
Chimie de la Matière Condensée, UMR 7574, Sorbonne Université-Collège de France-CNRS, 4 Place Jussieu, 75005 Paris, France
| | - Glenna L. Drisko
- CNRS,
Univ. Bordeaux, Bordeaux INP, ICMCB, UMR 5026, F-33600 Pessac, France
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9
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Zheng X, Wu H, Shen Z, Wang C, Ma Y. COOH-Terminated Silicon Quantum Dots as a Highly Efficient Drug Nanocarrier for Targeted Tumor Cell Imaging. J Biomed Nanotechnol 2021; 17:1830-1839. [PMID: 34688328 DOI: 10.1166/jbn.2021.3151] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Fluorescent silicon quantum dots (SiQDs) characterized by exceptional photostability and colloidal robustness as well as beneficial biocompatibility are fast becoming new pharmaceutical nanocarriers. With a view to efficiently loading cisplatin (CDDP) onto SiQDs, carboxylate group (COOH) terminated SiQDs were imperative because of chelate formation with CDDP. In this work, we employed a facial microwave irradiation route for rapidly synthesizing high-quality COOH-SiQDs through the use of 3-aminopropyl trimethoxy silane (APTMS) molecules to fulfil the role of silicon precursor and maleic acid (MA) as the agent for facilitating reduction. The SiQDs showed blue fluorescence with an associated photoluminescence quantum yield (PLQY) of 40.2%, the size of which was small at 3.2 ±0.6 nm, and long-lasting stability (an extensive range in pH (4-12) and concentrations of electrolytes reaching 3 Molarity of a solution of sodium chloride). As nanocarriers, carboxylic acids chelation generated a high loading of CDDP onto SiQDs (drug loading capacity, DLC up to 32.2% at pH = 9) and a drug release of CDDP up to 57.6% at pH = 5. Furthermore, the MTT assays demonstrated the non or low cytotoxicity of SiQDs and the role of the controlled release of SiQD-CDDP Finally, the prepared SiQD-CDDP were used for cell imaging, and further targeted labeling of some tumors after folic acid (FA) conjugation. These characteristics allow for the deployment of SiQDs as a highly efficient nanocarrier that facilitate the delivery of clinical drugs for the future.
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Affiliation(s)
- Xiaohui Zheng
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China
| | - Hongyu Wu
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China
| | - Zhe Shen
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China
| | - Caihong Wang
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China
| | - Yunfei Ma
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, 325035, China
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10
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Sugimoto H, Fujii M. Colloidal Mie resonant silicon nanoparticles. NANOTECHNOLOGY 2021; 32:452001. [PMID: 34343972 DOI: 10.1088/1361-6528/ac1a44] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Accepted: 08/02/2021] [Indexed: 06/13/2023]
Abstract
Nano- and microstructures of silicon (Si) exhibit electric and magnetic Mie resonances in the optical regime, providing a novel platform for controlling light at the nanoscale and enhancing light-matter interactions. In this Review, we present recent development of colloidal Si nanoparticles (NPs) that have wide range of applications in nanophotonics. Following brief summary of synthesis methods of amorphous and crystalline Si particles with high sphericity, optical responses of single Si particles placed on a substrate are overviewed. Then, the capability as a nanoantenna to control light-matter interactions is discussed in different systems. Finally, collective optical responses of Si NPs in solution are presented and the application potentials are discussed.
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Affiliation(s)
- Hiroshi Sugimoto
- Department of Electrical and Electronic Engineering, Graduate School of Engineering, Kobe University, Rokkodai, Nada, Kobe 657-8501, Japan
- JST-PRESTO, Honcho 4-1-8, Kawaguchi, Saitama 332-0012, Japan
| | - Minoru Fujii
- Department of Electrical and Electronic Engineering, Graduate School of Engineering, Kobe University, Rokkodai, Nada, Kobe 657-8501, Japan
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11
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De Marco ML, Jiang T, Fang J, Lacomme S, Zheng Y, Baron A, Korgel BA, Barois P, Drisko GL, Aymonier C. Broadband Forward Light Scattering by Architectural Design of Core-Shell Silicon Particles. ADVANCED FUNCTIONAL MATERIALS 2021; 31:2100915. [PMID: 38031546 PMCID: PMC10686547 DOI: 10.1002/adfm.202100915] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Indexed: 12/01/2023]
Abstract
A goal in the field of nanoscale optics is the fabrication of nanostructures with strong directional light scattering at visible frequencies. Here, the synthesis of Mie-resonant core-shell particles with overlapping electric and magnetic dipole resonances in the visible spectrum is demonstrated. The core consists of silicon surrounded by a lower index silicon oxynitride (SiOxNy) shell of an adjustable thickness. Optical spectroscopies coupled to Mie theory calculations give the first experimental evidence that the relative position and intensity of the magnetic and electric dipole resonances are tuned by changing the core-shell architecture. Specifically, coating a high-index particle with a low-index shell coalesces the dipoles, while maintaining a high scattering efficiency, thus generating broadband forward scattering. This synthetic strategy opens a route toward metamaterial fabrication with unprecedented control over visible light manipulation.
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Affiliation(s)
| | - Taizhi Jiang
- McKetta Department of Chemical Engineering, 200 E Dean Keeton St, The University of Texas at Austin, Austin TX 78712, USA
| | - Jie Fang
- Walker Department of Mechanical Engineering and Texas Materials Institute, 204 E Dean Keeton St, The University of Texas at Austin, Austin TX 78712, USA
| | - Sabrina Lacomme
- Univ. Bordeaux, CNRS, INSERM, Bordeaux Imaging Center, BIC, UMS 3420, US 4, Bordeaux F-33000, France
| | - Yuebing Zheng
- Walker Department of Mechanical Engineering and Texas Materials Institute, 204 E Dean Keeton St, The University of Texas at Austin, Austin TX 78712, USA
| | - Alexandre Baron
- CNRS, Univ. Bordeaux, CRPP, UMR 5031, Pessac F-33600, France
| | - Brian A Korgel
- McKetta Department of Chemical Engineering, 200 E Dean Keeton St, The University of Texas at Austin, Austin TX 78712, USA
| | - Philippe Barois
- CNRS, Univ. Bordeaux, CRPP, UMR 5031, Pessac F-33600, France
| | - Glenna L Drisko
- CNRS, Univ. Bordeaux, Bordeaux INP, ICMCB, UMR 5026, Pessac F-33600, France
| | - Cyril Aymonier
- CNRS, Univ. Bordeaux, Bordeaux INP, ICMCB, UMR 5026, Pessac F-33600, France
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12
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Goncharova IK, Tukhvatshin RS, Kholodkov DN, Novikov RA, Solodilov VI, Arzumanyan AV. Dumbbell-Shaped, Graft and Bottlebrush Polymers with All-Siloxane Nature: Synthetic Methodology, Thermal, and Rheological Behavior. Macromol Rapid Commun 2020; 42:e2000645. [PMID: 33345394 DOI: 10.1002/marc.202000645] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 12/04/2020] [Indexed: 12/14/2022]
Abstract
A methodology for synthesizing a wide range of dumbbell-shaped, graft and bottlebrush polymers with all-siloxane nature (without carbosilane linkers) is suggested. These macroarchitectures are synthesized from SiOH-containing compounds-silanol (Et3 SiOH) and siloxanol dendrons of the first and second generations, with various peripheral substituents (Me or Et)-and from linear siloxanes comprising terminal and internal SiH groups by the Piers-Rubinsztajn reaction. Products and key building blocks are obtained in yields up to 95%. These polymers are heat and frost-resistant siloxanes. As it turns out, the product physical properties are determined not only by the macromolecular structure, the linear chain length, the size and frequency of branched pendant, but also by the type of peripheral substituents-Me or Et-in the pendant. Thus, the viscosity of the graft polymers with branched pendant groups comprising peripheral Me-groups is more than ≈3-5 fold lower than that of analogous polymers with peripheral Et-groups.
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Affiliation(s)
- Irina K Goncharova
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Street, Moscow, 119991, Russian Federation
| | - Rinat S Tukhvatshin
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Street, Moscow, 119991, Russian Federation
| | - Dmitry N Kholodkov
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Street, Moscow, 119991, Russian Federation
| | - Roman A Novikov
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Pr., Moscow, 119991, Russian Federation
| | - Vitaliy I Solodilov
- Semenov Federal Research Center For Chemical Physics Russian Academy of Sciences, 4 Kosygin Street, Moscow, 119991, Russian Federation
| | - Ashot V Arzumanyan
- Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Street, Moscow, 119991, Russian Federation
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13
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Semlali S, Cormary B, De Marco ML, Majimel J, Saquet A, Coppel Y, Gonidec M, Rosa P, Drisko GL. Effect of solvent on silicon nanoparticle formation and size: a mechanistic study. NANOSCALE 2019; 11:4696-4700. [PMID: 30821792 DOI: 10.1039/c9nr00619b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Silicon has emerged as the most desirable material for optical dielectric metamaterials, however chemists struggle to obtain the required silicon nanoparticle dimensions. Here the average diameter of silicon nanoparticles is varied between 3 and 15 nm by changing the reaction solvent. Electrochemistry and NMR elucidate the role of solvent on the synthetic mechanism. Surprisingly the solvent does not stabilize the nanoparticles and there is no trend associated with chain length or open-chain versus cyclical solvent molecules. The solvent's main role is to stabilize the by-products, which prolongs the reaction lifetime.
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Affiliation(s)
- Sanaa Semlali
- CNRS, Université de Bordeaux, Bordeaux INP, ICMCB, UMR 5026, 33600 Pessac, France.
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Xu Y, Musumeci V, Aymonier C. Chemistry in supercritical fluids for the synthesis of metal nanomaterials. REACT CHEM ENG 2019. [DOI: 10.1039/c9re00290a] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The supercritical flow synthesis of metal nanomaterials is sustainable and scalable for the efficient production of materials.
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Affiliation(s)
- Yu Xu
- CNRS
- Univ. Bordeaux
- 33600 Pessac
- France
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Makarov S, Kolotova L, Starikov S, Zywietz U, Chichkov B. Resonant silicon nanoparticles with controllable crystalline states and nonlinear optical responses. NANOSCALE 2018; 10:11403-11409. [PMID: 29881863 DOI: 10.1039/c8nr02057d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
High-throughput laser printing of resonant silicon nanoparticles has emerged as a novel tool for the fabrication of deeply subwavelength objects with various functionalities. The applications of resonant silicon nanoparticles crucially depend on their crystalline state. However, the ways to control the crystalline structure during laser printing remain unstudied. Here we demonstrate, both experimentally and theoretically, how the crystalline structure of silicon nanoparticles fabricated by a laser printing technique can be varied from almost amorphous to a polycrystalline state. In particular, we propose a method of crystalline structure control via changing the distance between the irradiated silicon film and the receiving substrate. This study allows the most optimal conditions for second harmonic generation to be revealed. We believe that the proposed method opens the door to fully controllable laser printing of functional nanoparticles and nanostructures.
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Affiliation(s)
- Sergey Makarov
- Department of Nanophotonics and Metamaterials, ITMO University, St Petersburg 197101, Russia.
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