Thermodynamics and Transport Model of Charge Injection in Silicon Irradiated by a Pulsed Focused Laser

Boulais, Étienne; Binet, Vincent; Degorce, Jean-Yves; Wild, Graham; Savaria, Yvon; Meunier, Michel

doi:10.1109/ted.2008.2003027

Cited by 2 publications

(2 citation statements)

References 20 publications

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“…The latter can also lead to the process of voids capturing and formation of new pores inside the new NPs of Si (this assumes negligible effect of surface tension of liquid Si if the new NPs are large enough). The process of emission of the electrons from NPs and related to this accumulation of the positive charge with subsequent Coulomb explosion of the NPs [38,39,53] are not taken into account in our modeling.…”

Section: Resultsmentioning

confidence: 99%

Molecular Dynamics Modeling of Pulsed Laser Fragmentation of Solid and Porous Si Nanoparticles in Liquid Media

Kutlubulatova,

Grigoryeva,

Dimitreva

et al. 2023

IJMS

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The production of non-toxic and homogeneous colloidal solutions of nanoparticles (NPs) for biomedical applications is of extreme importance nowadays. Among the various methods for generation of NPs, pulsed laser ablation in liquids (PLAL) has proven itself as a powerful and efficient tool in biomedical fields, allowing chemically pure silicon nanoparticles to be obtained. For example, laser-synthesized silicon nanoparticles (Si NPs) are widely used as contrast agents for bio visualization, as effective sensitizers of radiofrequency hyperthermia for cancer theranostics, in photodynamic therapy, as carriers of therapeutic radionuclides in nuclear nanomedicine, etc. Due to a number of complex and interrelated processes involved in the laser ablation phenomenon, however, the final characteristics of the resulting particles are difficult to control, and the obtained colloidal solutions frequently have broad and multimodal size distribution. Therefore, the subsequent fragmentation of the obtained NPs in the colloidal solutions due to pulsed laser irradiation can be utilized. The resulting NPs’ characteristics, however, depend on the parameters of laser irradiation as well as on the irradiated material and surrounding media properties. Thus, reliable knowledge of the mechanism of NP fragmentation is necessary for generation of a colloidal solution with NPs of predesigned properties. To investigate the mechanism of a laser-assisted NP fragmentation process, in this work, we perform a large-scale molecular dynamics (MD) modeling of FS laser interaction with colloidal solution of Si NPs. The obtained NPs are then characterized by their shape and morphological properties. The corresponding conclusion about the relative input of the properties of different laser-induced processes and materials to the mechanism of NP generation is drawn.

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Section: Resultsmentioning

confidence: 99%

Molecular Dynamics Modeling of Pulsed Laser Fragmentation of Solid and Porous Si Nanoparticles in Liquid Media

Kutlubulatova,

Grigoryeva,

Dimitreva

et al. 2023

IJMS

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“…To ensure that the link is always created, it is possible to irradiate the antifuse link with more power than needed as well as to verify the link resistance in a closed loop electrical measurement [3,4]. However, those techniques are not always required because it is safer to minimize the optical power on the chip to prevent its damage [5][6][7]. Furthermore, the electrical measurement is time consuming and sometimes impossible to perform because of the circuit design.…”

Section: Introductionmentioning

confidence: 99%

Opticalin situprobing method for laser antifuse linking

Lachaine

Boulais²,

Meunier³

2010

Semicond. Sci. Technol.

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In circuit restructuration, it is often needed to create antifuse links, consisting in the formation of a connection between two adjacent metallic layers. These can be created by focusing a laser at a relatively high intensity to ensure efficient link creation. In order to minimize the optical power delivered in the chip from the pump laser, we have developed a novel optical in situ technique consisting of probing the link formation with a second laser beam. A sudden increase in the probe reflectance signal occurs when the metal fills the gap. By slowly increasing the pump laser beam power, it is possible to stop the intervention just after the link creation, thus minimizing the optical power delivered to the chip during the laser linking process.

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Thermodynamics and Transport Model of Charge Injection in Silicon Irradiated by a Pulsed Focused Laser

Cited by 2 publications

References 20 publications

Molecular Dynamics Modeling of Pulsed Laser Fragmentation of Solid and Porous Si Nanoparticles in Liquid Media

Molecular Dynamics Modeling of Pulsed Laser Fragmentation of Solid and Porous Si Nanoparticles in Liquid Media

Opticalin situprobing method for laser antifuse linking

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