Formulation and Characterization of Sinterless Barium Strontium Titanate (BST) Dielectric Nanoparticle Ink for Printed RF and Microwave Applications

Here, we report a previously unreported low-temperature curable barium strontium titanate (BaXSr1−XTiO3) or BST dielectric nanoparticle ink which shows high tunability for printed electronics/additive manufacturing applications. The newly formulated is optimized to print in aerosol jet printers and can be cured at 150°C, will allow the fabrication of tunable radio-frequency (RF) microwave (MW) devices on wide range flexible substrates. Characterization high-frequency properties showed (~ 15% 10 GHz with V/µm) constant 16 GHz). linear-reversible tunability, very important devices, was confirmed by testing GHz. temperature-dependent found < 10% variations from −50°C 125°C this ink. Detailed information characterization, formulation characterization discussed.