Type

Journal Article

Authors

Jun Wang
Wener J. Blau
Ronald S. Oremland
Seamus A. Curran
Long Zhang
Hongzhou Zhang
Surendra Maharjan
Kang-Shyang Liao
Shaun M. Baesman
Jianping Chen
and 13 others

Subjects

Physics

Topics
two dimensional three dimensional optical switches optical measurements elementary tellurium nano materials nano photonic properties nano technology

Bacterially synthesized tellurium nanostructures for broadband ultrafast nonlinear optical applications (2019)

Abstract Elementary tellurium is currently of great interest as an element with potential promise in nano-technology applications because of the recent discovery regarding its three two-dimensional phases and the existence of Weyl nodes around its Femi level. Here, we report on the unique nano-photonic properties of elemental tellurium particles [Te(0)], as harvest from a culture of a tellurium-oxyanion respiring bacteria. The bacterially-formed nano-crystals prove effective in the photonic applications tested compared to the chemically-formed nano-materials, suggesting a unique and environmentally friendly route of synthesis. Nonlinear optical measurements of this material reveal the strong saturable absorption and nonlinear optical extinctions induced by Mie scattering over broad temporal and wavelength ranges. In both cases, Te-nanoparticles exhibit superior optical nonlinearity compared to graphene. We demonstrate that biological tellurium can be used for a variety of photonic applications which include their proof-of-concept for employment as ultrafast mode-lockers and all-optical switches.
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Full list of authors on original publication

Jun Wang, Wener J. Blau, Ronald S. Oremland, Seamus A. Curran, Long Zhang, Hongzhou Zhang, Surendra Maharjan, Kang-Shyang Liao, Shaun M. Baesman, Jianping Chen and 13 others

Experts in our system

1
Jun Wang
Trinity College Dublin
Total Publications: 37
 
2
Long Zhang
Trinity College Dublin
Total Publications: 6
 
3
Hongzhou Zhang
Trinity College Dublin
Total Publications: 50