Protonic ceramic fuel cells (PCFCs) are clean and efficient power generation devices operating at intermediate temperatures. However, manufacturing difficulties have limited their commercialization, especially for promising tubular PCFCs. Herein, we report a cost-effective 3D printing technique for manufacturing large-area tubular PCFCs (e.g., 15.7 cm2), featured with the use of commercial raw materials, a small amount of binder, and a CO2 laser for rapid in situ drying. The technical advantages enable low-cost material preparation and efficient achievement of exemplary shape/dimension-controlled uniform microstructures in porous anode support, dense electrolyte, and porous cathode. The 3D-printed tubular PCFC (∼12.5 cm2) exhibits a power output of 2.45 W at 650 °C. Meanwhile, the long-term stability is confirmed during 200 h of operation. This novel 3D printing offers great potential to advance PCFCs from the laboratory to larger scales for realistic applications.

In the light of recent advances in material informatics, there is a great demand for high-throughput approaches of sample fabrication and property characterization. Currently, no high-throughput approach has been demonstrated for the fast sampling of the microstructure and the correlated properties. In this paper, we demonstrate the ultra-fast fabrication of an alumina sample array and the high-throughput hardness characterization of these sample units. The alumina sample array was fabricated using picosecond (PS) laser micromachining and CO2 laser sintering within a short time (i.e., less than a few minutes). After laser sintering, the hardness of these sample units was characterized using micro-indentation, and the microstructure was observed using scanning electron microscopy (SEM). In each sample unit, the microstructure was uniform for the entire top surface and within about 20 µm depth from the top surface. The relative density (RD) and corresponding micro-hardness of the sample units was found to continuously vary over a wide range from 89% RD with 600 kgf/mm2 hardness to 99% RD with 1609 kgf/mm2 hardness. For these laser-sintered samples, the correlation of hardness and relative density of the alumina matched well with the literature reports on sintered alumina obtained using conventional low-throughput furnace sintering experiments.

The installation-projection in contemporary art practice seeks to open up new spaces, projected light not only creating depth in the black box, but also an uncanny sensorial experience. As a walking artist, my work crosses boundaries between the performative and video practice using sound and the pico-projector. This specific device is sometimes a means to create with groups of participants in collaborative walking art work. In an ongoing piece, entitled Drift With Me, various craft practitioners lead me on their daily walks through the countryside. I record the image of the path and our conversation. I then project the walk on their hands as they weave, draw, paint, make pottery, etc. The moving path, hands and materials become one. In the exhibition space, the final videos and sound work are projected on the ground on squares of earth: an invitation for the spectator to explore different crafts and paths.This article bases its discussion on questions that arise in the field of intermedial artistic video and sound practices and in particular those using projection and walking. In such projects, how does the use of the pico-projector and sound weave interconnections between walking and crafting?While Lars Elleström's theoretical work on the concept of intermediality is a useful tool to understand the multiple relations between the different forms of media and technology in my artistic practice when using sound, video-projection and walking, we shall base our analysis on the works of British anthropologist Tim Ingold, and also Pascale Weber and Daphné Le Sergent, both French theoreticians in the field of visual art.