Disordered photonics behavior from terahertz to ultraviolet of a three-dimensional graphene network

Abstract

The diffusion of light by random materials is a general phenomenon that appears in many different systems, spanning from colloidal suspension in liquid crystals to disordered metal sponges and paper composed of random fibers. Random scattering is also a key element behind mimicry of several animals, such as white beetles and chameleons. Here, random scattering is related to micro and nanosized spatial structures affecting a broad electromagnetic region. In this work, we have investigated how random scattering modulates the optical properties, from terahertz to ultraviolet light, of a novel functional material, i.e., a three-dimensional graphene (3D Graphene) network based on interconnected high-quality two-dimensional graphene layers. Here, random scattering generates a high-frequency pass-filter behavior. The optical properties of these graphene structures bridge the nanoworld into the macroscopic world, paving the way for their use in novel optoelectronic devices.

The INFN-LNF present and future accelerator-based light facilities

“…The most required detector is the 64x64 pixel focal plane array (FPA) one to perform chemical imaging with diffraction-limited spatial resolution. Also in the last years, many important studies have been performed in different fields including cultural heritage [ 13 ], biology [ 14 , 15 ] and material science [ 16 ].…”

“…Of great importance is also another study performed at the SINBAD-IR beamline related to 2D functional materials that have induced a growing interest on the possible extension of their properties to three-dimensional structures [ 16 ]. The random light scattering of a three-dimensional graphene network achieved from the interconnection of high-quality layers of graphene was characterised in the THz to UV range.…”

“…The optical properties of these 3D networks can be useful in the development of new optoelectronic devices having observed, in this specific case, a behaviour related to the generation of a high-pass optical filter. With the study performed, it was demonstrated that the observed behaviour came from the random scattering due the pores and branches present in the graphene 3D structure [ 16 ].…”

Terahertz Spectroscopic Analysis in Protein Dynamics: Current Status

“…These systems have promoted the diffusion of THz radiation for spectroscopy applications. Thus, it was applied with success in various scientific fields e.g., gas sensing [75][76][77][78][79][80], chemical and pharmaceutical analysis [81,82], condensed matter [83][84][85], identification of crystalline polymorphs, microelectronics and security [86][87][88][89], agri-food industry [90] and cultural heritage [91], including the emerging support in the field of biomedicine and bio-imaging [92][93][94][95][96][97][98][99], etc. Thus, THz spectroscopy has become a valuable tool for rapid and non-invasive detection thanks to many advantages that make it particularly appealing for probing the intermolecular structure and dynamics of biomolecules [95,100,101].…”

2D carbon network arranged into high-order 3D nanotube arrays on flexible microelectrode: integrated in electrochemical micro-biosensor devices for cancer detection

“…Recent progress of nanotechnology in structural/functional materials has stimulated tremendous research interest in the development of various carbon allotropes including graphene quantum dot and nanodiamond 1 , 1D carbon nanotube and nanohorn 2 , and 2D monolayer/multilayer graphene and amorphous/graphitic/diamond-like carbon network 3 , for their intrinsic physico-chemical properties, extraordinary mechanical strength and unique physiological and pharmacological effects that highly desirable for a diverse of application in catalysis, energy-related systems, as well as biosensing and biomedical engineering [4][5][6] . More importantly, these low-dimension nanocarbons, can be self-assembled or co-assembled into various 3D macroscopic architectures [7][8][9] , which open new avenues for their promising application as high-performance electrode materials in next-generation exible/stretchable batteries, implantable and wearable (micro)electronic devices and arti cially intelligent sensors [10][11][12][13][14][15] .…”