1
|
Jardali F, Tran J, Liège F, Florea I, Leulmi ME, Vach H. Electric Field-Induced Nano-Assembly Formation: First Evidence of Silicon Superclusters with a Giant Permanent Dipole Moment. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2169. [PMID: 37570492 PMCID: PMC10421055 DOI: 10.3390/nano13152169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 07/21/2023] [Accepted: 07/24/2023] [Indexed: 08/13/2023]
Abstract
The outstanding properties of silicon nanoparticles have been extensively investigated during the last few decades. Experimental evidence and applications of their theoretically predicted permanent electric dipole moment, however, have only been reported for silicon nanoclusters (SiNCs) for a size of about one to two nanometers. Here, we have explored the question of whether suitable plasma conditions could lead to much larger silicon clusters with significantly stronger permanent electric dipole moments. A pulsed plasma approach was used for SiNC production and surface deposition. The absorption spectra of the deposited SiNCs were recorded using enhanced darkfield hyperspectral microscopy and compared to time-dependent DFT calculations. Atomic force microscopy and transmission electron microscopy observations completed our study, showing that one-to-two-nanometer SiNCs can, indeed, be used to assemble much larger "superclusters" with a size of tens of nanometers. These superclusters possess extremely high permanent electric dipole moments that can be exploited to orient and guide these clusters with external electric fields, opening the path to the controlled architecture of silicon nanostructures.
Collapse
Affiliation(s)
- Fatme Jardali
- Laboratoire de Physique des Interfaces et des Couches Minces, CNRS, École Polytechnique, IP Paris, 91128 Palaiseau, France; (F.J.); (J.T.); (F.L.); (I.F.)
| | - Jacqueline Tran
- Laboratoire de Physique des Interfaces et des Couches Minces, CNRS, École Polytechnique, IP Paris, 91128 Palaiseau, France; (F.J.); (J.T.); (F.L.); (I.F.)
| | - Frédéric Liège
- Laboratoire de Physique des Interfaces et des Couches Minces, CNRS, École Polytechnique, IP Paris, 91128 Palaiseau, France; (F.J.); (J.T.); (F.L.); (I.F.)
- LMF, École Normale Supérieure, Paris-Saclay, 91190 Gif-sur-Yvette, France
| | - Ileana Florea
- Laboratoire de Physique des Interfaces et des Couches Minces, CNRS, École Polytechnique, IP Paris, 91128 Palaiseau, France; (F.J.); (J.T.); (F.L.); (I.F.)
- CRHEA, CNRS, Université Côte d’Azur, 06903 Sophia-Antipolis, France
| | | | - Holger Vach
- Laboratoire de Physique des Interfaces et des Couches Minces, CNRS, École Polytechnique, IP Paris, 91128 Palaiseau, France; (F.J.); (J.T.); (F.L.); (I.F.)
- Centre for Research in Molecular Modeling, Concordia University, Montreal, QC H4B 1R6, Canada
| |
Collapse
|
2
|
Complex plasma research under microgravity conditions. NPJ Microgravity 2023; 9:13. [PMID: 36750724 PMCID: PMC9905515 DOI: 10.1038/s41526-023-00261-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 01/20/2023] [Indexed: 02/09/2023] Open
Abstract
The future of complex plasma research under microgravity condition, in particular on the International Space Station ISS, is discussed. First, the importance of this research and the benefit of microgravity investigations are summarized. Next, the key knowledge gaps, which could be topics of future microgravity research are identified. Here not only fundamental aspects are proposed but also important applications for lunar exploration as well as artificial intelligence technology are discussed. Finally, short, middle and long-term recommendations for complex plasma research under microgravity are given.
Collapse
|
3
|
EUV-Induced Plasma: A Peculiar Phenomenon of a Modern Lithographic Technology. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9142827] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
After a long period of relatively low interest, science related to effects in the Extreme Ultraviolet (EUV) spectrum range experienced an explosive boom of publications in the last decades. A new application of EUV in lithography was the reason for such a growth. Naturally, an intensive development in such area produces a snowball effect of relatively uncharted phenomena. EUV-induced plasma is one of those. While being produced in the volume of a rarefied gas, it has a direct impact onto optical surfaces and construction materials of lithography machines, and thus has not only scientific peculiarity, but it is also of major interest for the technological application. The current article provides an overview of the existing knowledge regarding EUV-induced plasma characteristics. It describes common, as well as distinguishing, features of it in comparison with other plasmas and discusses its interaction with solid materials. This article will also identify the gaps in the existing knowledge and it will propose ways to bridge them.
Collapse
|
4
|
Denysenko IB, Stefanović I, Sikimić B, Winter J, Azarenkov NA. Discharging of dust particles in the afterglow of plasma with large dust density. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2013; 88:023104. [PMID: 24032949 DOI: 10.1103/physreve.88.023104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2013] [Indexed: 06/02/2023]
Abstract
The discharging of dust particles in the afterglow of plasma with large dust density is studied. We used measured electron and metastable dependencies to calculate the rate describing collection of electrons by dust particles by solving the electron balance equation. This rate is compared with the rate calculated using the orbital motion limited (OML) theory. It is found that the OML theory may not be applied for description of dust charging at large afterglow times, and the energetic electrons generated in metastable-metastable collisions significantly affect charging of dust particles. The time dependence for dust charge is calculated by two different approaches: first, the "standard" approach is used, which assumes that ion and electron fluxes to the dust particles are different in the afterglow. Second, the dust charge is calculated by assuming that desorption of electrons from dust particles is very fast. Both approaches gave similar results for dust charging. In addition, the effects of secondary emission due to ion-dust and metastable-dust collisions on dust discharging are investigated. The main source of dust charging in the late afterglow of plasma with large dust density are the energetic electrons generated in Ar(m) metastable-metastable collisions.
Collapse
Affiliation(s)
- I B Denysenko
- School of Physics and Technology, V. N. Karazin Kharkiv National University, Svobody sq. 4, 61077 Kharkiv, Ukraine
| | | | | | | | | |
Collapse
|
5
|
Ivlev AV. Coulomb expansion: analytical solutions. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2013; 87:025102. [PMID: 23496647 DOI: 10.1103/physreve.87.025102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2012] [Indexed: 06/01/2023]
Abstract
Exact and approximate analytical solutions are presented, describing expansion of a cloud of charged particles in one, two, and three dimensions (assuming the planar, axial, and spherical symmetries, respectively). The expansion occurs in a gas or dilute plasma, where the screening is unimportant, so that particles interact with each other via Coulomb repulsive forces. It is shown that, irrespective of dimensionality, the density distribution remains homogeneous across the cloud and the velocity increases linearly towards the cloud boundary. The density evolution obeys a universal dependence, asymptotically decreasing with time as t(-1). It is also shown that in the presence of an inhomogeneous external field the interparticle repulsion becomes negligible at an early stage of expansion and then the density decreases with time exponentially.
Collapse
Affiliation(s)
- A V Ivlev
- Max Planck Institute for Extraterrestrial Physics, Giessenbachstrasse, 85741 Garching, Germany.
| |
Collapse
|
6
|
Lipaev AM, Khrapak SA, Molotkov VI, Morfill GE, Fortov VE, Ivlev AV, Thomas HM, Khrapak AG, Naumkin VN, Ivanov AI, Tretschev SE, Padalka GI. Void Closure in Complex Plasmas under Microgravity Conditions. PHYSICAL REVIEW LETTERS 2007; 98:265006. [PMID: 17678099 DOI: 10.1103/physrevlett.98.265006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2007] [Indexed: 05/16/2023]
Abstract
We describe the first observation of a void closure in complex plasma experiments under microgravity conditions performed with the Plasma-Kristall (PKE-Nefedov) facility on board the International Space Station. The void--a grain-free region in the central part of the discharge where the complex plasma is generated--has been formed under most of the plasma conditions and thought to be an inevitable effect. However, we demonstrate in this Letter that an appropriate tune of the discharge parameters allows the void to close. This experimental achievement along with its theoretical interpretation opens new perspectives in engineering new experiments with large quasi-isotropic void-free complex plasma clouds in microgravity conditions.
Collapse
Affiliation(s)
- A M Lipaev
- Institute for High Energy Densities, Russian Academy of Sciences, 125412 Moscow, Russia
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
7
|
Couëdel L, Mikikian M, Boufendi L, Samarian AA. Residual dust charges in discharge afterglow. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2006; 74:026403. [PMID: 17025546 DOI: 10.1103/physreve.74.026403] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2006] [Indexed: 05/12/2023]
Abstract
An on-ground measurement of dust-particle residual charges in the afterglow of a dusty plasma was performed in a rf discharge. An upward thermophoretic force was used to balance the gravitational force. It was found that positively charged, negatively charged, and neutral dust particles coexisted for more than 1 min after the discharge was switched off. The mean residual charge for 200-nm-radius particles was measured. The dust particle mean charge is about -5e at a pressure of 1.2 mbar and about -3e at a pressure of 0.4 mbar .
Collapse
Affiliation(s)
- L Couëdel
- GREMI (Groupe de Recherches sur l'Energétique des Milieux Ionisés), CNRS/Université d'Orléans, 14 rue d'Issoudun, 45067 Orléans Cedex 2, France.
| | | | | | | |
Collapse
|
8
|
Kretschmer M, Khrapak SA, Zhdanov SK, Thomas HM, Morfill GE, Fortov VE, Lipaev AM, Molotkov VI, Ivanov AI, Turin MV. Force field inside the void in complex plasmas under microgravity conditions. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2005; 71:056401. [PMID: 16089654 DOI: 10.1103/physreve.71.056401] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2004] [Indexed: 05/03/2023]
Abstract
Observations of complex plasmas under microgravity conditions onboard the International Space Station performed with the Plasma-Kristall experiment-Nefedov facility are reported. A weak instability of the boundary between the central void (region free of microparticles) and the microparticle cloud is observed at low gas pressures. The instability leads to periodic injections of a relatively small number of particles into the void region (by analogy this effect is called the "trampoline effect"). The trajectories of injected particles are analyzed providing information on the force field inside the void. The experimental results are compared with theory which assumes that the most important forces inside the void are the electric and the ion drag forces. Good agreement is found clearly indicating that under conditions investigated the void formation is caused by the ion drag force.
Collapse
Affiliation(s)
- M Kretschmer
- Centre for Interdisciplinary Plasma Science, Max-Planck-Institut für extraterrestrische Physik, D-85741 Garching, Germany
| | | | | | | | | | | | | | | | | | | |
Collapse
|
9
|
Yaroshenko VV, Annaratone BM, Khrapak SA, Thomas HM, Morfill GE, Fortov VE, Lipaev AM, Molotkov VI, Petrov OF, Ivanov AI, Turin MV. Electrostatic modes in collisional complex plasmas under microgravity conditions. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2004; 69:066401. [PMID: 15244739 DOI: 10.1103/physreve.69.066401] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2003] [Indexed: 05/24/2023]
Abstract
A linear dispersion relation in a highly collisional complex plasma, including ion drift, was derived in the light of recent PKE-Nefedov wave experiment performed under microgravity conditions onboard the International Space Station. Two modifications of dust density waves with wave frequencies larger than the dust-neutral collision frequency were obtained. The relevance to the space observations was analyzed and a comparison of theory and observations was made for two different complex plasma domains formed by small and large microparticles. Good qualitative agreement is found between the measurements and the theoretical dispersion relations. This allows a determination of the basic complex plasma parameters.
Collapse
Affiliation(s)
- V V Yaroshenko
- Centre for Interdisciplinary Plasma Science, Max-Planck-Institut für Extraterrestrische Physik, D-85741 Garching, Germany
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
10
|
|