Adhesion advances: from nanomaterials to biomimetic adhesion and applications

Abstract

The field of adhesion has revealed a significant impact on numerous amount of applications such as wound healing, drug delivery, electrically conductive adhesive, dental adhesive, and wood industry. Nanotechnology has...

Engineering functional natural polymer-based nanocomposite hydrogels for wound healing

“…52,54 Moreover, some nanomaterials can be easily removed due to their undesirable adhesive performance to biological tissue. 55 Representative nanomaterials commonly used in NNPHs for wound healing mainly include carbon-based, [56][57][58][59][60][61][62] metal-based, [63][64][65][66][67][68][69][70] MXene-based [71][72][73][74][75] and siliconbased [76][77][78] nanomaterials, as shown in Table 2 and Fig. 3.…”

Synthesis of Citrate-Capped Sn Nanoparticles with Excellent Oxidation Resistance for High-Performance Electrically Conductive Adhesives

“…These functionalities will enable them to combine with silver flakes in thermoset epoxies as complementary conductive fillers to create high-performance conductive adhesives (ECAs). Over the past decade, ECAs have emerged as a direct and scalable replacement for the hazardous Sn–Pb solder used in traditional interconnect processes for electronic devices. − Usually, to improve the conductivity of the ECAs, it is necessary to introduce silver nanoparticles as complementary conductive fillers to disperse among the silver flakes of the ECAs to enhance their performance. − These silver nanoparticles could be effectively replaced by cheap and highly stable Sn nanoparticles in this work. By adding 7 wt % Sn nanoparticles as complementary conductive fillers, the resistivity of the ECAs can be reduced to 1/6000 of that of the ECAs filled with only the same mass ratio of silver flakes, exhibiting its great potential in future electronics.…”

Robust and Elevated Adhesion and Anisotropic Friction in a Bioinspired Bridged Micropillar Array

“…Many animals have evolved unique adhesion organs to adapt themselves to complex natural environments. − The remarkable adhesion abilities originate from the specialized micro/nanostructures and/or chemical components of these organisms. − Geckos are the most widely studied animals and are considered to rely on the setae (fibrillar array) on their toes to generate strong shear adhesion and friction. ,− Meanwhile, the asymmetric structure of setae, which includes the slanted geometry and the spatular ends, besides the special upwards bending of toes, ensures easy detachment. − Therefore, both pillar and anisotropic structures are important for achieving strong and reversible adhesion. , Inspired by the fibrillar structure in geckos, bioinspired adhesives composed of an array of micro/nanopillars have been constructed for diverse applications, including medical tapes, sporting goods, climbing robots, semiconductor carriers, and many others. − …”