Dataset Information

Direct Ink Writing of SiCN/RuO₂/TiB₂ Composite Ceramic Ink for High-Temperature Thin-Film Sensors.

ABSTRACT: Direct ink writing (DIW) of high-temperature thin-film sensors holds significant potential for monitoring extreme environments. However, existing high-temperature inks face a trade-off between cost and performance. This study proposes a SiCN/RuO₂/TiB₂ composite ceramic ink. The added TiB₂, after annealing in a high-temperature atmospheric environment, forms B₂O₃ glass, which synergizes with the SiO₂ glass phase formed from the SiCN precursor to effectively encapsulate RuO₂ particles. This enhances the film's density and adhesion to the substrate, preventing RuO₂ volatilization at high temperatures. Additionally, the high conductivity of TiB₂ improves the film's overall conductivity. Test results indicate that the SiCN/RuO₂/TiB₂ film exhibits high linearity from room temperature to 900 °C, high stability (resistance drift rate of 0.1%/h at 800 °C), and high conductivity (4410 S/m). As a proof of concept, temperature sensors and a heat flux sensor were successfully fabricated on a metallic hemispherical surface. Performance tests in extreme environments using high-power lasers and flame guns verified that the conformal thin-film sensor can accurately measure spherical temperature and heat flux, with a heat flux sensor response time of 53 ms. In conclusion, the SiCN/RuO₂/TiB₂ composite ceramic ink developed in this study offers a high-performance and cost-effective solution for high-temperature conformal thin-film sensors in extreme environments.

SUBMITTER: Wang Y

PROVIDER: S-EPMC11312801 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature

ACCESS DATA

Publications

Direct Ink Writing of SiCN/RuO2/TiB2 Composite Ceramic Ink for High-Temperature Thin-Film Sensors.

Wang Yusen Y Xu Lida L Zhou Xiong X Zhao Fuxin F Liu Jun J Wang Siqi S Sun Daoheng D Chen Qinnan Q

Materials (Basel, Switzerland) 20240801 15

Direct ink writing (DIW) of high-temperature thin-film sensors holds significant potential for monitoring extreme environments. However, existing high-temperature inks face a trade-off between cost and performance. This study proposes a SiCN/RuO2/TiB2 composite ceramic ink. The added TiB2, after annealing in a high-temperature atmospheric environment, forms B2O3 glass, which synergizes with the SiO2 glass phase formed from the SiC ...[more]

PMID: 39124456

Similar Datasets

Project description:Wearable mechanical sensors have the potential to transform healthcare by enabling patient monitoring outside of the clinic. A critical challenge in the development of mechanical—e.g., strain—sensors is the combination of sensitivity, dynamic range, and robustness. This work describes a highly sensitive and robust wearable strain sensor composed of three layered materials: graphene, an ultrathin film of palladium, and highly plasticized PEDOT:PSS. The role of the graphene is to provide a conductive, manipulable substrate for the deposition of palladium. When deposited at low nominal thicknesses (~8 nm) palladium forms a rough, granular film which is highly piezoresistive (i.e., the resistance increases with strain with high sensitivity). The dynamic range of these graphene/palladium films, however, is poor, and can only be extended to ~10% before failure. This fragility renders the films incompatible with wearable applications on stretchable substrates. To improve the working range of graphene/palladium strain sensors, a layer of highly plasticized PEDOT:PSS is used as a stretchable conductive binder. That is, the conductive polymer provides an alternative pathway for electrical conduction upon cracking of the palladium film and the graphene. The result was a strain sensor that possessed good sensitivity at low strains (0.001% engineering strain) but with a working range up to 86%. The piezoresistive performance can be optimized in a wearable device by sandwiching the conductive composite between a soft PDMS layer in contact with the skin and a harder layer at the air interface. When attached to the skin of the torso, the patch-like strain sensors were capable of detecting heartbeat (small strain) and respiration (large strain) simultaneously. This demonstration highlights the ability of the sensor to measure low and high strains in a single interpolated signal, which could be useful in monitoring, for example, obstructive sleep apnea with an unobtrusive device. Graphical Abstract

Dataset Information

Direct Ink Writing of SiCN/RuO₂/TiB₂ Composite Ceramic Ink for High-Temperature Thin-Film Sensors.

Publications

Direct Ink Writing of SiCN/RuO<sub>2</sub>/TiB<sub>2</sub> Composite Ceramic Ink for High-Temperature Thin-Film Sensors.

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets