Pathways from disordered to ordered nanostructures from defect guided dewetting of ultrathin bilayers

Chemical Engineering of Cu–Sn Disordered Network Metamaterials

“…Thus, the creation of disordered nanophotonic materials , is increasingly being explored as an alternative design strategy, as they offer new routes in fabrication and access to optical phenomena that rely on their intrinsic disorder. − Disordered optical materials are omnipresent in nature and, in the case of the black feathers from birds of paradise or the white skin on pyjama squids, often provide a broad-band optical response. In fact, many disordered metamaterials do not rely on precise nanofabrication methods but can be realized through self-assembly of structural units, dewetting, or chemical dealloying . One of the techniques for the fabrication of disordered network metamaterials is chemical dealloying, which has already been proven to be a scalable and low-footprint fabrication method in the case of binary or ternary alloy systems. , These networks, similarly to connected wire-mesh metamaterials, exhibit a broad-band optical response depending on the network connectivity, which can be tailored by adjusting the network thickness by varying the dealloying time .…”

“…7−9 Disordered optical materials are omnipresent in nature and, in the case of the black feathers from birds of paradise 10 or the white skin on pyjama squids, 11 often provide a broad-band optical response. In fact, many disordered metamaterials do not rely on precise nanofabrication methods but can be realized through selfassembly of structural units, 12 dewetting, 13 or chemical dealloying. 14 One of the techniques for the fabrication of disordered network metamaterials is chemical dealloying, which has already been proven to be a scalable and lowfootprint fabrication method in the case of binary or ternary alloy systems.…”