single-crystal lithium-rich Lead-Free KNN-Based Transparent Piezoelectric Ceramic

Product Name single-crystal lithium-rich Lead-Free KNN-Based Transparent Piezoelectric Ceramic Product Overview Lead-Free KNN-Based Transparent Piezoelectric Ceramic is a perovskite-structured (K, Na)NbO₃-based ceramic with modified compositions (e.g., addition of Li, Sb, Ta elements) and advanced sintering routes (hot isostatic pressing, SPS, hot-press sintering), achieving both high optical transparency and excellent piezoelectric performance. Developed by Prof. Yang Zhen's research group, this material delivers good transmittance in the visible–near-infrared range along with strong piezoelectric response, making it a key material for cross-disciplinary applications in piezoelectrics, optoelectronics, and optics. The ceramic specimen appears as a pale-yellow transparent disk (the letter pattern "J/F/H" is clearly visible through the disk). Technical Parameter Diameter:≤ 12 mm Product Features 1. Transparent + Piezoelectric Dual Function: Transmittance of ~ 60% at 900 nm combined with d₃₃ > 100 pC/N — a rare combination for ceramic materials. Application Fields 3. Lead-Free & Eco-Friendly: Completely free of Pb, Cd, and other heavy metals, complying with RoHS and REACH; can replace lead-containing transparent electro-optic ceramics like PLZT. 4. Flexible Size Customization: Diameter ≤ 12 mm and thickness ≤ 0.3 mm customizable per user requirements; high-precision optical polish suitable for optical path integration. 5. High Surface Quality: Mirror-polished surface, free of pores and inclusions, avoiding optical scattering loss — ready for use in transparent devices. 6. Excellent Insulation: High resistivity (≥ 10¹⁰ Ω·cm order), stable polarization under electric field, low dielectric loss. • Piezophotonics: Utilizing optical signal changes in transparent piezoelectric ceramics under external electric field or mechanical stress for optical modulation, optical switching, and tunable optical filters. • Transparent Actuators / Smart Windows: Transparent piezoelectric ceramics generate micro-deformation under voltage; suitable for adaptive optical elements, tunable lenses, and piezoelectric micro-positioning platforms. • Electro-Optic (EO) Modulators: Electro-optic effect under applied electric field for optical intensity and phase modulation in optical communications. • Transparent Ultrasonic Transducers: Combining piezoelectric emission with optical observation for photoacoustic imaging and combined optical–ultrasonic sensing. • Piezoelectric-Transparent Composite Devices: Integrated with ITO, graphene, AgNW, or other transparent electrodes for fabricating transparent piezoelectric sensors operating in VIS–NIR. • Optical Platform Vibration Isolation / Active Damping: Apply micro-vibration via inverse piezoelectric effect for active control of optical component displacement. • Research / Teaching: Used for fundamental research and laboratory courses on lead-free piezoelectric materials and piezoelectric transparent ceramics.