Posted in | Nanomaterials

Laser Beams Turn Gold Nanoparticles into Filaments

Research conducted at the Center for Nanoscale Materials and Argonne's Biosciences Division has discovered a user-friendly and cost-effective method, by which nanoparticles can be fitted into bigger constructions of any customized shape through a process known as ‘optically directed assembly’ (ODA).

Gold and carbon nanoparticles are suspended in water. A nano-drop of the suspension is kept on a glass slide. A laser of low power is beamed onto a tiny spot inside the drop close to its surface. The nanoparticles are first trapped visually, heated and evaporated. A Convective fluid is passed through them to test their chemical reactions. This makes them bind near the laser focus. The focus of the laser is moved through the drop, a constant filament of the bound material ensues. These materials remain intact even after the fluid is allowed to flow out completely.

Filaments of any customized shape measuring millimeters in length and 10-60 times wider than the original particles can thus be created. These hierarchical designs can be used in applications such as biological sensing, electronics, optics, and energy technologies.

Carbon causes irreversible metal to metal aggregation. The team at CNM's Theory & Modeling Group created gold to carbon nanoparticle configurations and wetting by simulating molecular dynamics.

Source: http://nanomat.uprrp.edu/

Citations

Please use one of the following formats to cite this article in your essay, paper or report:

  • APA

    Chai, Cameron. (2019, February 12). Laser Beams Turn Gold Nanoparticles into Filaments. AZoNano. Retrieved on November 29, 2020 from https://www.azonano.com/news.aspx?newsID=21944.

  • MLA

    Chai, Cameron. "Laser Beams Turn Gold Nanoparticles into Filaments". AZoNano. 29 November 2020. <https://www.azonano.com/news.aspx?newsID=21944>.

  • Chicago

    Chai, Cameron. "Laser Beams Turn Gold Nanoparticles into Filaments". AZoNano. https://www.azonano.com/news.aspx?newsID=21944. (accessed November 29, 2020).

  • Harvard

    Chai, Cameron. 2019. Laser Beams Turn Gold Nanoparticles into Filaments. AZoNano, viewed 29 November 2020, https://www.azonano.com/news.aspx?newsID=21944.

Tell Us What You Think

Do you have a review, update or anything you would like to add to this news story?

Leave your feedback
Submit