Nanoporous Metallic Networks: Fabrication, Optical Properties and Applications

David Wang Auditorium, 3rd floor Dalia Maydan Bldg.
Asst. Prof. Adi Salomon

Asst. Prof. Adi Salomon

Chemistry Department, Bar Ilan University

Nanoporous metallic networks are a group of porous materials made of solid metals with sub-optical wavelengths sizes of both particles and voids. They are characterized by unique optical properties, as well as high surface area and permeability of guest materials. As such, they attract a great focus as novel materials for photonics, catalysis, sensing, and renewable energy. Their properties together with the ability for scaling-up evoke an increased interest also in the industrial field. Recently, my group pioneered large-scale nanoporous metallic. These disorder networks are pure, and are made of chain-like ligaments with characteristic dimensions of about 50 nm, forming a continuous solid framework with multi-sized and -shaped pores. Our results suggest that these networks support plasmonic excitation over a broad optical frequency range, and they may viewed as a carpet of ‘hot-spots’. Such 3D metallic networks exhibit high optical transparency and electrical conductivity. We characterize the unique optical properties of such metallic nano-architecture networks, which are named ‘Netals’.

scalable nanoporous metallic network made of silver.
Fig. 1: scalable nanoporous metallic network made of silver.

(1) R. Ron, D. Gachet, K. Rechav, A. Salomon, Adv. Mater. 2016, 1604018.
(2) R. Ron, E. Haleva, A. Salomon, Nanoporous Metallic Networks: Fabrication, Optical Properties, and Applications. Adv.Mater. 2018, 1706755.