Achievements
Achievement
In the aerospace field, the reliability and safety of rocket engines are of paramount importance. Conventional monitoring methods rely on manual inspections, making it difficult to capture structural deformations in high-temperature environments in real time. Recently, a technology known as Aerosol Jet Printing (AJP) was featured in the International Journal of Advanced Manufacturing Technology. Using this technique, scientists directly printed platinum‑nanoparticle ink microsensors—capable of withstanding temperatures up to 1290°C—onto the surface of rocket engines, enabling real-time monitoring of structural strain and creep. This article will systematically examine its underlying principles, applications, and future prospects.
With the advancement of technology, electronic devices are increasingly demanding lightweight, efficient, and customizable energy-storage solutions. From smartwatches to drones, and from wearable gadgets to intelligent sensors, the “miniaturization” of energy storage has become a key focus in scientific research and development. Among numerous emerging materials, MXene has emerged as a rising star, thanks to its exceptional electrical conductivity, high capacitance, and tunable properties. Nevertheless, effectively, stably, and precisely integrating MXene into micrometer-scale manufacturing processes remains a significant challenge. A recent study published in Small Methods has achieved a breakthrough by developing a stable Ti₃C₂Tₓ MXene ink formulation. Combined with aerosol jet printing (AJP), this approach enables the fabrication of high-resolution, high-performance micro-supercapacitors, opening up new possibilities for fields such as microelectronics and energy storage.
The pace of technological obsolescence in electronic devices is staggering, and the resulting e-waste problem is growing increasingly severe. Conventional environmental monitoring sensors—particularly those for temperature and humidity—often rely on non‑degradable plastic substrates (such as PET or PE) and toxic metal materials. Not only are these components difficult to recycle, but their degradation can release harmful microplastic particles, contaminating the environment. Is it possible to develop sensors that are both high‑performance and environmentally friendly—perhaps even nearly “invisible”? A recent study published in Small Methods offers an exciting answer: by leveraging aerosol jet printing (AJP), researchers have successfully fabricated a highly transparent, ultra‑compact, and ultra‑low‑material‑consumption integrated temperature–humidity sensor on a biodegradable cellulose substrate. This could herald the dawn of next‑generation green electronics.
When you casually discard an electronic sensor, you may not realize that it could persist in the soil for centuries, becoming “electronic waste” that pollutes the environment. Today, the global Internet of Things is experiencing explosive growth: by 2025, more than 30 billion devices are expected to be deployed, bringing with them tens of millions of tons of electronic waste annually and depleting critical mineral resources. However, a groundbreaking study published in npj Advanced Manufacturing has opened new avenues for eco‑friendly electronics: a research team from Northwestern University and other institutions has successfully developed fully biodegradable printed electronic sensors using aerosol jet printing. From the substrate to the ink, everything is derived entirely from biomass, delivering exceptional performance while naturally breaking down at the end of its lifecycle—truly embodying the principle of “from nature, back to nature.”
Have you ever imagined a future where smartphones can fold like paper and smartwatches are printed directly onto clothing? All of this would be impossible without graphene—a two-dimensional carbon material hailed as the “king of materials.” However, conventional graphene printing inks typically rely on surfactants or polymers as dispersants; these additives must be removed through high-temperature post‑processing, limiting their use on heat‑sensitive substrates and hindering the development of diverse flexible electronic devices. A recent breakthrough: scientists from China and Israel have developed a new type of graphene ink. By using polypropylene carbonate (PPC) as a dispersant and pairing it with low‑surface‑tension solvents, they can print high‑performance micro‑supercapacitors on paper with only a mild 220°C annealing step. Coupled with aerosol jet printing (AJP) technology, this approach makes it easy to bring intricate circuits to life right on paper.
With the rapid advancement of microelectronic devices and wearable technologies, on-chip energy storage components must balance high energy density with compact form factors. Micro-supercapacitors (MSCs) have emerged as a leading candidate; however, conventional planar electrode architectures suffer from low active-material loading and long ion‑transport pathways. Two-dimensional Ti₃C₂Tₓ MXene materials, with their high specific surface area and excellent electrochemical performance, are an ideal choice for fabricating high‑performance MSCs. Nevertheless, their 3D assembly faces three major challenges: first, MXene nanosheets are held together only by weak van der Waals forces and hydrogen bonds, lacking strong interfacial interactions and thus failing to maintain a stable 3D architecture; second, existing methods rely on binders and other additives, which can occupy active sites and degrade device performance; third, traditional 3D‑printing techniques exhibit low resolution (typically >40 μm) and low aspect ratios (generally <0.3), making it difficult to fabricate high‑fidelity, complex 3D microstructures. To address these bottlenecks, a team at Carnegie Mellon University has developed an additive‑free aerosol jet printing (AJP) technique that enables the 3D self‑supporting assembly of MXene nanosheets. The resulting work was published in the journal Small.
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