Onion-like carbon and diamond nanoparticles for optical limiting

Photoemission study of onionlike carbons produced by annealing nanodiamonds

“…It has been shown that due to an efficient optical limiting action of OLC, they are good candidates for photonic applications. 30 OLC also demonstrates high selectivity and catalytic activity in the oxidative dehydrogenation of ethyl benzene to styrene. 31 The properties of OLC produced by annealing ND have been investigated by x-ray emission spectroscopy, 32 Raman spectroscopy, 33 electron energy-loss spectroscopy, 34 electron-spin resonance, 35 x-ray diffraction, 36 and ultraviolet-visible absorption spectroscopy.…”

Method to obtain carbon nano-onions by pyrolisys of propane

“…The first method was developed by Ugarte in 1992 and is based on inducting quasi-spherical carbon particles by a high-energy electron beam bombardment (300 keV) [9], but NCOs obtained are unstable [5]. These nanoparticles can be generated by heat treatment of carbon soot [10] or by annealing of nanodiamonds [11][12][13]. Later, in 1995, J. Cabioc'h, Rieviere and Delafond [14] found graphitic onions films during a carbon ion implantation into a hot copper substrate.…”

“…These properties make them suitable for applications such as the encapsulation of foreign materials [25,26], catalyst supports [27] and lubricant additives [28,29]. The combination of CNOs with polymers obtains novel materials with great potential in a wide range of different applications including optical limiting [12,30,31], energy and gas stores [32,33], anode materials for Lithium-Ion Batteries [34] and additives for capacitor devices [35].…”

Laser-assisted nanofabrication of carbon nanostructures

“…[106][107][108][109][110][111][112] A wide spectrum of applications have been envisioned for CNOs, including gas storage, supercapacitors, broadband electromagnetic shielding, catalyst support structures, nanolubricating additives, and water purification. 106,[113][114][115][116][117] Due to their nonlinear optical properties, 118 CNOs could also be used in optical limiters to protect delicate optical devices and human eyes from laser threats. Due to their potential applications, high-quality CNOs are desired.…”