effectively used for multifunctional applications ranging from light-weight space technologies, high-temperature fl exible sensors to stretchable implants on or into human bodies. [ 1b , 5 ] The utilization of Q1D nanostructures from metal oxide semiconductors (ZnO, Fe 2 O 3 , Al 2 O 3 , TiO 2 , etc.) as building units of macroscopic 3D networks is advantageous due to the fact that mechanical fl exibility and excellent electrical/sensing properties [ 3a , 4a , 6 ] of these Q1D nanostructures may be additionally implemented in the 3D networks. The successful fabrication of such multifunctional 3D networks is still a very challenging task and simply not possible with every nanowire synthesis technique. A variety of growth methods starting from conventional vapor-liquid-solid [ 7 ] to advanced lithography [ 8 ] techniques has been utilized for synthesizing the Q1D nanostructures from several metal oxides in different forms, but they still lack with key issues, e.g., appropriate integration, formation of fl exible networks, and others with regard to device applications. To overcome latter integration diffi culties, different strategies for direct fabrication of Q1D nano-and microstructures on microchips have been investigated and the corresponding devices have demonstrated high performances, too. [ 9 ] The 3D fl exible networks made from Q1D nanostructures, in this context, could become better alternates for an easy and direct realization of applications based on the nanoscale materials. However, typical availability of simple, cost-effective, and versatile synthesis techniques of fl exible networks, which is an equally important aspect amongst other listed above, is still not reported extensively.For the fabrication of macroscopic 3D interconnected nanowire networks, some advanced and multistep fabrication techniques have already been utilized. [ 10 ] Although these methods have shown their abilities to fabricate macroscopic 3D networks, they still involve high cost and complex synthesis steps which limit the mass scale production of such networks and hence their appropriate applications. In this regard, the fl ame transport synthesis (FTS) [ 4b ] approach demonstrated an enormous potential for metal oxide nanostructuring in a versatile and cost-effective manner. Structures ranging from singlecrystal ZnO nanoscale rods to centimeter size 3D interconnected network consisting of ZnO nano-and microtetrapods have been successfully synthesized by the FTS approach. The 3D networks have shown various possible and very promising applications in different fi elds. [ 11 ]