Selective laser sintering of conductive patterns on a novel silver–barium strontium titanate composite material

Abstract

Here, we report a previously un-reported printed electronics/additive manufacturing (AM) approach to fabricate conductive/resistive features on novel insulating silver–barium strontium titanate (Ag–BST) printed composite films. Ag–BST composite functional ink was formulated by blending a conductive Ag nanoparticle ink and an insulating BST nanoparticle ink. The blending ratio of Ag and BST inks was optimized to obtain the insulating phase after the initial curing and the conductive/resistive phase following selective laser sintering under ambient conditions. Selective laser sintered Ag–BST resistors showed an ohmic behavior and the resistivity could be adjusted by varying the laser sintering parameters, such as the wavelength, power and the rastering speed/pitch of the laser. This insulator to conductor/resistor transitioning Ag–BST ink paves a new path for direct write printed electronics/AM applications. Proofs of concept for potential applications utilizing this functional ink are demonstrated. Also, this Ag–BST ink can be used as a conventional resistive ink for dispensing printers. Thermally sintered Ag–BST resistors showed less than 8% variation in resistance between −50 °C and 150 °C.

Preparation and Evaluation of Conductive Polymeric Composite from Metals Alloys and Graphene to Be Future Flexible Antenna Device

“…Many approaches start from biosensing uses in human health monitoring to end-electronic communication and media devices. A variety of integration and trials of liquid-phase technologies are used in fabrication, and different electronic materials applications like spanning smart packaging, [1,2] A. Abdelrahman, F. Erchiqui, M. Nedil: Preparation and evaluation of conductive polymeric composite from 35 metals alloys and graphene to be future flexible antenna device biosensing and macro chips, [3] flexible fluidic antenna [4] renewable energy management, and [5] printed electronics ink devices [6,7]. High-performance materials are central to this technology.…”