Abstract Sintering of nanoparticle inks over large area-substrates is a key enabler for scalable fabrication patterned and continuous films, with multiple emerging applications. The high speed ambient condition operation photonic sintering has elicited significant interest this purpose. In work, we experimentally characterize the temperature evolution densification in silver inks, as function size. It shown that smaller nanoparticles result faster densification, lower temperatures during...

Conventional predictive modeling of parametric relationships in manufacturing processes is limited by the subjectivity human expertise and intuition on one hand cost time experimental data generation other hand. This work addresses this issue establishing a new Large Language Model (LLM) framework. The novelty lies combining automatic extraction process-relevant knowledge embedded literature with iterative model refinement based small amount data. approach evaluated three distinct that are...

Intense Pulsed Light sintering (IPL) uses pulsed, visible light to sinter nanoparticles (NPs) into films used in functional devices. While IPL of chalcogenide NPs is demonstrated, there limited work on prediction crystalline phase the film and impact optical properties substrate. Here we characterize model evolution temperature during copper sulfide NP glass. Recrystallization covellite digenite phases occurs at 126 °C 155 respectively within 2-7 seconds. Post-IPL exhibit p-type behavior,...

Concurrently reducing processing temperature, electrical resistance, and material cost with scalable fabrication capabilities is critical for conductive elements of flexible planar electronics. Intense pulsed light sintering (IPL) mixed dissimilar-shape nanostructures may achieve this goal. However, potential hindered by knowledge gaps on how dissimilarity in nanostructure shape affects interparticle neck growth kinetics general the self-damping coupling between optical absorption IPL. We...

Abstract Fabric-based personal heating patches have small geometric profiles and can be attached to selected areas of garments for thermal management enable significant energy savings in built environments. Scalable fabrication such with high performance at low applied voltage, durability materials cost is critical the widespread implementation these savings. This work investigates a scalable Intense Pulsed Light (IPL) sintering process fabricating silver nanowire on woven polyester patches....

Abstract A novel low‐temperature route is developed for inkjet printing of the perovskite Cs 2 SnI 6 , to create wearable negative‐temperature‐coefficient thermistors with unprecedented performance on thermally sensitive fabrics. low processing temperature 120 °C achieved by creating a stable and printable ink using binary metal iodide salts, which transformed into dense crystals after printing. The optimally printed shows measurement range up °C, high sensitivity (4400 K), coefficient...

Sintering of metal nanowire (NW) networks on transparent polymers is an emerging approach for fabricating conductive electrodes used in multiple devices. Pulsed light sintering a scalable process which large-area, broad-spectrum xenon lamp causes rapid NW fusion to increase network conductivity, while embedding the NWs polymer mechanical robustness. This paper develops multiphysical predicting evolution and nanoscale temperature gradients substrate during pulsed silver polycarbonate. Model...

Intense pulsed light sintering of Ag nanoparticle–nanowire films shows reduced peak temperatures and a self-limiting behavior controlled by NW content.

Conformally integrating conductive circuits with rigid 3D surfaces is a key need for smart materials and structures. This paper investigates sequential thermoforming flash light sintering (FLS) of silver (Ag) nanowire (NW) interconnects printed on planar polymer sheets. The resulting interconnect–polymer assemblies are thus preshaped to the desired geometry can be robustly attached surface. conformal circuit integration approach avoids interconnect delamination in manual conformation...

Textile inkjet printing is an increasingly popular process in the textile industry, as it allows for incorporation of complex and detailed patterns onto fabrics, well production small medium volumes printed text. Unfortunately, most dyes used by industry come from synthetic and/or non-renewable sources. There has been some research to date using fungal pigments wood rotting fungi (‘spalting’ fungi) dyes, however these have never tested printing. Of particular interest red crystallizing...

Microreactor-Assisted Soft Lithography In article number 2401112, Chih-hung Chang and co-workers demonstrate a novel microreactor-assisted soft lithography process to deposit nanostructures with multiscale 3D geometric shapes fabricate p-n heterojunction n-type ZnO p-type CuO. Factors determining the printing are studied based on COMSOL simulation experimental results. This enables scalable fabrication of complicated functional desired regions using low-cost facile solution-based methods.

Abstract Advanced manufacturing processes are often based on complex multiphysics phenomena that either poorly understood or computationally too expensive to simulate in the context of process design, control planning. Traditionally, simplified physics models with prescribed heuristics purely data-driven surrogate used as alternatives such applications. The concept physics-informed machine learning (PIML) has been shown have unique advantages over both these various fields system analysis....

Material integrity cyberattacks induce manufacturing-driven defects in parts and compromise their operational functionality. The socio-economic cost of monitoring-based part disposal production stoppage necessitates rapid in-process recovery from continued defect formation. But can circumvent existing real-time control methods by introducing intermittent, random, a-priori unknown perturbations exogenous process conditions. We present a novel AI-based framework to address this issue examine...

Material extrusion (MEX) 3D printing offers a promising avenue for fabricating metal and ceramic components, where highly loaded polymer filaments are 3D-printed sintered. Achieving nearly 100% part density is critical in this process, as porosity during compromises properties after sintering. However, challenges arise due to the unfavourable mechanical rheological of MEX filaments, leading slow print-speeds, filament breakage, inconsistent extrusion. This work explores these...

Understanding the mechanisms and kinetics of thermal sintering between silver nanowires (NWs) is critical for multiple emerging applications. We use molecular dynamics simulations to reveal stacked NW pairs with nonparallel axes, which realistically mimics geometric configurations in experimentally relevant networks. Relative orientation has a hitherto-unknown but significant nonlinear influence on inter-NW neck growth. This due dynamic interaction surprisingly high rigid-body rotation NWs,...