Bioinspired Adhesive Manufactured by Projection Microstereolithography 3D Printing Technology and Its Application

Abstract

Many methods are used to manufacture bioinspired adhesive arrays such as photolithography and nanoimprinting methods, which are very high cost and time‐consuming. In this manuscript, projection microstereolithography 3D printing method is firstly adopted to prepare the bioinspired dry adhesive in several micrometers, which is low cost, time saving, convenient and can realize rapid, large‐scale, high‐precision, and controllable complex structure manufacture. The morphology and adhesive properties of four kinds of adhesive with flat punch, mushroom‐shaped, suction cup‐shaped, and titled micropillar structures are investigated. Scanning electron microscope (SEM) observation shows that the very regular pattern of the adhesive is generated and no collapse phenomenon is observed. The adhesion test results show the mushroom‐shaped adhesive reach the maximum adhesion of 15 KPa, which can be maintained after repeated uses. The contact angle of the adhesive is 143.7°, showing the good self‐cleaning ability. The mushroom‐shaped adhesive exhibits excellent adhesion property, high repeatability, and good self‐cleaning ability, which is further applied in grasping and transferring various surfaces such as solar panels, printed circuit board, flanges, and so on.

Recent Progress on the Use of Stimulus-Responsive Materials for Dry Adhesive Applications

“…Compared to other fabrication techniques that are used, additive manufacturing offers some unique advantages in terms of design, flexibility, and customization. Researchers have used projection microstereolithography 3D printing method for producing 3D microscale dry adhesive structures . The projection microstereolithography is used as a layer-by-layer additive manufacturing process for obtaining some complex 3D structures.…”

“…Researchers have used projection microstereolithography 3D printing method for producing 3D microscale dry adhesive structures. 39 The projection microstereolithography is used as a layer-by-layer additive manufacturing process for obtaining some complex 3D structures. Briefly, the process starts with the creation of a 3D model of the object that needs to be printed.…”

“…He et al 39 used the projection microstereolithography technique to first manufacture the microscale bioinspired positive mold. They used a photosensitive resin as the printing material.…”

Springtail-Inspired Hierarchically Structured Polymer Films as Omniphobic Coatings for Directional Transportation of Liquids

“…Besides, a variety of superhydrophobic architectures are discovered on bear cicada (Cryptotympana takasagona Kato), water strider (Gerridae), lady’s mantle (Alchemilla vulgaris), prickly pear (Opuntia), and nasturtium (Tropaeolum), to name a few. − Interestingly, reed leaves and rice leaves even exhibit anisotropic antiwetting characteristics. , The grooved hierarchical structures on their surfaces allow dew droplets to roll off along the microscale grooves for collecting water to encourage plant growth. In addition, similar dewetting architectures can also be found on animals, for example, blue morpho butterfly (Morpho deidamia) wings. , Bioinspired by the natural creatures, geometrically patterned surfaces have been designed and developed. − Nevertheless, their antiwetting behaviors are significantly diminished and ineffective for transportation of low-surface-tension liquids.…”

Polar-coordinate line-projection light-curing continuous 3D printing for tubular structures

“…Many advanced 3D printing techniques, with fast printing speed and high precision have been developed in the past several decades, including fused deposition modeling (FDM) [14][15][16], continuous liquid interface production (CLIP) [17,18], high-area rapid printing (HARP) [19], rapid continuous stereolithography based on volumetric polymerization inhibition patterning [20], dualcolor xolography volumetric 3D printing [21,22], volume 3D printing based on tomographic reconstruction [23][24][25][26], etc. The development of 3D printing technology has provided numerous advantages for manufacturing prototypes of tubular structures such as tubular grafts and biomimetic blood vessels [1,[27][28][29][30]. For example, van Lith et al used CLIP to achieve high-precision tubular graft of 2 cm long printing in less than 20 min [31].…”