Recent Advancement of Emerging Nano Copper-Based Printable Flexible Hybrid Electronics

Abstract

Printed copper materials have been attracting significant attention prominently due to their electric, mechanical, and thermal properties. The emerging copper-based flexible electronics and energy-critical applications rely on the control of electric conductivity, current-carrying capacity, and reliability of copper nanostructures and their printable ink materials. In this review, we describe the growth of copper nanostructures as the building blocks for printable ink materials on which a variety of conductive features can be additively manufactured to achieve high electric conductivity and stability. Accordingly, the copper-based flexible hybrid electronics and energy-critical devices printed by different printing techniques are reviewed for emerging applications.

Green flexible electronics based on starch

“…Nowadays, electronic devices are transforming from solid, durable, single-shape styles to wearable, versatile, high-performance, and multifunctional components, among which the flexible electronics (FEs) have already sprung up and gained extensive attentions [1][2][3][4] . The appealing applications of FEs may at least include personalized mobile devices, healthcare systems, human-machine interfaces, soft robots, electronic skin, artificial intelligence (AI), and Internet of Things (IoT) [5][6][7][8] . To fabricate FEs, the soft, stretchable, foldable substrates are highly desired.…”

Combining printing and nanoparticle assembly: Methodology and application of nanoparticle patterning

“… 34 , 35 Many challenges still exist in controlling the quality of the printed pattern, including the viscosity and surface tension of the NP ink and the wettability of the printing substrate. 36 The nozzle diameter is generally 10–30 μm. To avoid clogged nozzles, the diameter of the NPs should not be larger than that of the nozzle.…”

A double-layered liquid metal-based electrochemical sensing system on fabric as a wearable detector for glucose in sweat

“…These studies have applied and verified the functions of biosensors by implementing conductive circuits on fabrics. However, it is still challenging to fabricate complex circuits directly on fabric using common electrical inks, such as nano-copper 15 , nano-silver 16 , nano-gold 17 , and graphite ink 18 for printing. This is mostly because the intersecting circuits require multilayer interconnection, which is difficult to achieve on fabrics with these conductive inks.…”