Synthetic approaches toward tungsten photonic crystals for thermal emission

Temperature-dependent mechanical behavior of three-dimensionally ordered macroporous tungsten

“…The other one was denoted as 3DOM W film, prepared from PMMA thin films. The synthesis of monolithic 3DOM W was carried out following a previously reported method, using APTA as the tungsten precursor [17]. Details are provided in the Supporting Information.…”

“…Moreover, the densities of 3DOM materials can be reduced into the single-digit percentages relative to those of the bulk material [11]. Additional flexibility exists to produce nanoporous thin films and to employ a wide variety of materials (e.g., 3DOM materials have been generated from C [12], V 2 O 5 [13], SiO 2 [14,15], W and W-Mo [16,17,18], TiO 2 [11,19], Ni [20,21], Cu [22,23]). These geometries and chemistries are not all readily produced with electrochemical dealloying processes.…”

“…This article presents the mechanical behavior of 3DOM W (successfully synthesized as in earlier works [16,17,18]) across the BDT to assess the effects of increasing plasticity on the mechanical behavior of BCC metals in the 3DOM structure.…”

Fabrication of carbon/refractory metal nanocomposites as thermally stable metallic photonic crystals

“…8,19 When using polymeric opals as templates, more open structures can be fabricated by annealing the templating polymer spheres to enhance the size of necks between spheres and to form larger windows in the templated product. 16,29 This strategy was used here. The second requirement for a large photonic bandgap is successfully tailoring the top surface of the inverse opal, which interacts with the light.…”

3D Periodic and Interpenetrating Tungsten–Silicon Oxycarbide Nanocomposites Designed for Mechanical Robustness

“…40 To prepare the nanocomposite, hereafter referred to as 3DOM W−SiOC, the 3DOM W scaffold was first synthesized through colloidal crystal templating. 28,41 This scaffold was infiltrated with the preceramic polymer precursor SMP-10, a polycarbosilane, and pyrolyzed, yielding a SiOC ceramic phase in the voids of 3DOM W. The 3DOM W−SiOC material consisted of continuous phases of crystalline tungsten and amorphous silicon oxycarbide with some discrete free carbon. The 3DOM nanocomposite material featured a highly periodic structure, which remained thermally stable up to 1000 °C.…”