Composite powder design strategy enabling vatphotopolymerization 3D printing of lithium disilicateglass-ceramics with high precision, strength, and antibacterial properties
Peer-Reviewed Publication
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Lithium disilicate glass-ceramics are extensively utilized for dental restorations owing to their semi-translucency, high strength, and superior biocompatibility. While vat photopolymerization 3D printing offers substantial improvements in production efficiency and material utilization over conventional powder sintering and machining, the high transparency of these materials induces severe light scattering, compromising printing precision and causing clinical complications including restoration misfit, bacterial infiltration, and secondary caries. This study introduces a functional composite powder design strategy grounded in light scattering theory, which modulates slurry optical properties to achieve high-precision fabrication while endowing antibacterial functionality, thereby establishing a foundation for clinical translation of 3D-printed functional dental ceramics.
Next-generation thermal barrier coatings (TBCs) must operate beyond 1200 °C to protect hot-end components in gas turbines and aircraft engines, yet conventional yttria-stabilized zirconia (YSZ) suffers from phase instability and rising thermal conductivity above 900 °C. Researchers at Kunming University of Science and Technology have designed tantalate high-entropy ceramics (HECs) coatings synthesized via air plasma spraying (APS), that withstand thermal shock at 1500 °C for 614 cycles and thermal fatigue at 1150 °C for 12,830 cycles. Two failure mechanisms are identified, advancing the design of high-performance TBCs for extreme-temperature service.
Traditional trial-and-error methods for developing BaTiO3 (BT)-based high-entropy energy storage ceramics are highly inefficient, and such materials struggle to balance high energy storage density and efficiency. The research team adopted a machine learning acceleration strategy, building a random forest model to screen 660,000 candidate compositions and identify the optimal one. This ceramic achieves an ultrahigh energy storage density of 10.8 J·cm-3 and an efficiency of 86%, along with excellent temperature and frequency stability and charge-discharge performance. It provides an efficient new approach for designing high-performance energy storage ceramics, boasting significant application potential in the electronic device field.
Dielectric ceramics are essential for high-power energy storage, yet their applications have long been limited by low energy density and efficiency. In a new study, researchers from Guilin University of Technology, China, developed a high-entropy tungsten bronze ceramic with synergistic bandgap engineering, achieving a recoverable energy density of 7.93 J·cm-3 and an ultrahigh efficiency of 94.25%. The material also delivers ultrafast discharge (1.56 µs) and excellent thermal stability, positioning it as a strong candidate for advanced pulsed power capacitors.
In a paper published in Mycology, a team from Fujian Academy of Agricultural Sciences in China provides the first evidence of N6-methyladenosine (m6A) -dependent growth regulation in Sparassis latifolia, advancing the understanding of fungal epitranscriptomics and offering potential targets for optimizing industrial mushroom cultivation.