title: Green chemistry and nanofabrication in a levitated Leidenfrost drop.
abstract: Green nanotechnology focuses on the development of new and sustainable methods of creating nanoparticles, their localized assembly and integration into useful systems and devices in a cost-effective, simple and eco-friendly manner. Here we present our experimental findings on the use of the Leidenfrost drop as an overheated and charged green chemical reactor. Employing a droplet of aqueous solution on hot substrates, this method is capable of fabricating nanoparticles, creating nanoscale coatings on complex objects and designing porous metal in suspension and foam form, all in a levitated Leidenfrost drop. As examples of the potential applications of the Leidenfrost drop, fabrication of nanoporous black gold as a plasmonic wideband superabsorber, and synthesis of superhydrophilic and thermal resistive metal-polymer hybrid foams are demonstrated. We believe that the presented nanofabrication method may be a promising strategy towards the sustainable production of functional nanomaterials.
authors.affiliation: Department of Nanochemistry and Nanoengineering, Faculty of Engineering, Institute for Materials Science, University of Kiel, Kaiserstrasse 2, 24143 Kiel, Germany.
authors.forename: Ramzy
authors.initials: R
authors.lastname: Abdelaziz
authors.forename: Duygu
authors.initials: D
authors.lastname: Disci-Zayed
authors.forename: Mehdi Keshavarz
authors.initials: MK
authors.lastname: Hedayati
authors.forename: Jan-Hendrik
authors.initials: JH
authors.lastname: Pöhls
authors.forename: Ahnaf Usman
authors.initials: AU
authors.lastname: Zillohu
authors.forename: Burak
authors.initials: B
authors.lastname: Erkartal
authors.forename: Venkata Sai Kiran
authors.initials: VS
authors.lastname: Chakravadhanula
authors.forename: Viola
authors.initials: V
authors.lastname: Duppel
authors.forename: Lorenz
authors.initials: L
authors.lastname: Kienle
authors.forename: Mady
authors.initials: M
authors.lastname: Elbahri
mesh_terms: D006046:Gold / Q000737:chemistry*; D055772:Green Chemistry Technology / Q000379:methods*; D006358:Hot Temperature; D053768:Metal Nanoparticles / Q000737:chemistry*; D036103:Nanotechnology / Q000379:methods*; D016062:Porosity; D055672:Static Electricity
chemical_list: D006046:Gold