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Electric Field-Induced Nano-Assembly Formation: First Evidence of Silicon Superclusters with a Giant Permanent Dipole Moment.

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Title: Electric Field-Induced Nano-Assembly Formation: First Evidence of Silicon Superclusters with a Giant Permanent Dipole Moment.
Authors: Jardali, Fatme1 (AUTHOR) fjardali0@gmail.com, Tran, Jacqueline1 (AUTHOR) jacqueline.tran@polytechnique.edu, Liège, Frédéric1,2 (AUTHOR) frederic.liege@universite-paris-saclay.fr, Florea, Ileana1,3 (AUTHOR) if@crhea.cnrs.fr, Leulmi, Mohamed E.4 (AUTHOR) mohamed.leulmi@siliconnanoclusters.com, Vach, Holger1,5 (AUTHOR) holger.vach@polytechnique.edu
Source: Nanomaterials (2079-4991). Aug2023, Vol. 13 Issue 15, p2169. 16p.
Subjects: Dipole moments, Electric dipole moments, Atomic force microscopy, Transmission electron microscopy, Silicon
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. [ABSTRACT FROM AUTHOR]
Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Electric Field-Induced Nano-Assembly Formation: First Evidence of Silicon Superclusters with a Giant Permanent Dipole Moment.
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  Data: <searchLink fieldCode="AR" term="%22Jardali%2C+Fatme%22">Jardali, Fatme</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> fjardali0@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Tran%2C+Jacqueline%22">Tran, Jacqueline</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> jacqueline.tran@polytechnique.edu</i><br /><searchLink fieldCode="AR" term="%22Liège%2C+Frédéric%22">Liège, Frédéric</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> frederic.liege@universite-paris-saclay.fr</i><br /><searchLink fieldCode="AR" term="%22Florea%2C+Ileana%22">Florea, Ileana</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<i> if@crhea.cnrs.fr</i><br /><searchLink fieldCode="AR" term="%22Leulmi%2C+Mohamed+E%2E%22">Leulmi, Mohamed E.</searchLink><relatesTo>4</relatesTo> (AUTHOR)<i> mohamed.leulmi@siliconnanoclusters.com</i><br /><searchLink fieldCode="AR" term="%22Vach%2C+Holger%22">Vach, Holger</searchLink><relatesTo>1,5</relatesTo> (AUTHOR)<i> holger.vach@polytechnique.edu</i>
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  Data: <searchLink fieldCode="JN" term="%22Nanomaterials+%282079-4991%29%22">Nanomaterials (2079-4991)</searchLink>. Aug2023, Vol. 13 Issue 15, p2169. 16p.
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  Data: 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. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.3390/nano13152169
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        Text: English
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      – SubjectFull: Dipole moments
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      – SubjectFull: Atomic force microscopy
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      – SubjectFull: Transmission electron microscopy
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      – SubjectFull: Silicon
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      – TitleFull: Electric Field-Induced Nano-Assembly Formation: First Evidence of Silicon Superclusters with a Giant Permanent Dipole Moment.
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              Text: Aug2023
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