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Proceedings Paper

MXenes for nanophotonic and metamaterial devices (Conference Presentation)
Author(s): Krishnakali Chaudhuri; Zhuoxian Wang; Mohamed Alhabeb; Xiangeng Meng; Shaimaa I. Azzam; Alexander Kildishev; Young L. Kim; Vladimir M. Shalaev; Yury Gogotsi; Alexandra Boltasseva
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Paper Abstract

MXenes are a recently discovered family of two-dimensional nanomaterials formed of transition metal carbides and carbon nitrides with the general chemical form Mn+1XnTx, where ‘M’ is a transitional metal, ‘X’ is either C or N, and ‘T’ represents a surface functional group (O, -OH or -F). MXenes are derived from layered ternary carbides and nitrides known as MAX (Mn+1AXn) phases by selective chemical etching of the ‘A’ layers and addition of functional groups ‘T’. In our work, we focus on one of the most well studied MXene, titanium carbide (Ti3C2Tx). Single to few layer flakes of Ti3C2Tx (in a solution dispersed form) are used to create a continuous film on a desired substrate by using spin coating technique. Losses inherent to the bulk MXene and existence of strong localized SP resonances in Ti3C2Tx disks/pillar-like nanostructures at near-IR frequencies are utilized to design an efficient broadband absorber. For Ti3C2Tx MXene disk array sitting on a bilayer stack of Au/Al2O3, high efficiency (>90%) absorption across visible to near-IR frequencies (bandwidth ~1.55 μm), is observed experimentally. We also experimentally study random lasing behavior in a metamaterial constructed by randomly dispersing single layer nanosheets of Ti3C2Tx into a gain medium (rhodamine 101, R101). Sharp lasing peaks are observed when the pump energy reaches the threshold value of ~ 0.70 μJ/pulse. This active metamaterial holds a great potential to achieve tunable random lasing by changing the optical properties of Ti3C2Tx flakes.

Paper Details

Date Published: 17 September 2018
Proc. SPIE 10721, Active Photonic Platforms X, 107210P (17 September 2018); doi: 10.1117/12.2320696
Show Author Affiliations
Krishnakali Chaudhuri, Purdue Univ. (United States)
Zhuoxian Wang, Purdue Univ. (United States)
Mohamed Alhabeb, Drexel Univ. (United States)
Xiangeng Meng, Purdue Univ. (United States)
Shaimaa I. Azzam, Purdue Univ. (United States)
Alexander Kildishev, Purdue Univ. (United States)
Young L. Kim, Purdue Univ. (United States)
Vladimir M. Shalaev, Purdue Univ. (United States)
Yury Gogotsi, Drexel Univ. (United States)
Alexandra Boltasseva, Purdue Univ. (United States)

Published in SPIE Proceedings Vol. 10721:
Active Photonic Platforms X
Ganapathi S. Subramania; Stavroula Foteinopoulou, Editor(s)

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