Recent Progress of Two-Dimensional Materials for Ultrafast Photonics

Abstract

Owing to their extraordinary physical and chemical properties, two-dimensional (2D) materials have aroused extensive attention and have been widely used in photonic and optoelectronic devices, catalytic reactions, and biomedicine. In particular, 2D materials possess a unique bandgap structure and nonlinear optical properties, which can be used as saturable absorbers in ultrafast lasers. Here, we mainly review the top-down and bottom-up methods for preparing 2D materials, such as graphene, topological insulators, transition metal dichalcogenides, black phosphorus, and MXenes. Then, we focus on the ultrafast applications of 2D materials at the typical operating wavelengths of 1, 1.5, 2, and 3 μm. The key parameters and output performance of ultrafast pulsed lasers based on 2D materials are discussed. Furthermore, an outlook regarding the fabrication methods and the development of 2D materials in ultrafast photonics is also presented.

Biosensing Technologies: A Focus Review on Recent Advancements in Surface Plasmon Coupled Emission

“…Moreover, interfacial interactions of these isotropic and anisotropic nanomaterials using the SPCE, PCCE and FPoM platforms are anticipated to generate new light matter interactions and are expected to present new insights into the broad arena of nanophotonics and plasmonics. Furthermore, it should not go without mentioning that several 2-dimensional materials (including WS 2 , MoS 2 , WSe 2 , TaS 2 , TaSe 2 to name a few) have been exponentially explored for applications in nanophotonics on account of their distinct optoelectronic properties [ 192 ]. In light of these observations, it is important to note that the nano-assemblies constituted by the plasmonic, dielectric (HRI and LRI) as well as low dimensional nanosubstrates would render tunable properties for desired applications.…”

Low-Dimensional-Materials-Based Flexible Artificial Synapse: Materials, Devices, and Systems

“…Among them, low-dimensional materials with at least one dimension at the nanoscale level, have distinct properties from their corresponding bulk materials [ 35 ]. Due to their outstanding properties, low-dimensional materials have attracted a great amount of attention [ 36 , 37 , 38 , 39 , 40 ]. For example, 2D materials, such as transitional metal dichalcogenides (TMDs), 2D oxides, and MXene, and 1D materials, such as carbon nanotubes, metal oxide nanotubes, and silicon nanowires, have been synthesized and widely applied.…”

A double co-sensitization strategy using heteroleptic transition metal ferrocenyl dithiocarbamate phenanthrolene-dione for enhancing the performance of N719-based DSSCs

“…To assess the kinetics of the electron transport properties and charge recombination, electrochemical impedance In the EIS study, the semicircle in the middle frequency region is associated with the electron/charge transfer at the TiO 2 /dye/ electrolyte interface. [39][40][41] Fig. 7a and b show the Nyquist plots for DSSCs fabricated by using N719, Co-Fc/N719, Cu-Fc/N719 and Co-Fc/Cu-Fc/N719 in the dark and light, respectively.…”