2021
DOI: 10.1002/admt.202001218 View full text |Buy / Rent full text
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Abstract: Fabrication and assembly of flexible sensors and soft actuators play important roles in improving the performance of wearable electronics and soft robots. Traditional manufacturing techniques have limitations in controlling the geometry and architecture of many soft actuation and sensing systems, which compromise their performance as well as applications. With the emergence of 3D printing, directly transforming 3D models into real objects becomes possible. In particular, vat photopolymerization techniques, rep… Show more

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“…where N is the number of the papillae that contact with the droplet from the lateral view, D and L are the diameter and spacing of the papillae, respectively. Assume that the wetting state of the papillae arrays belong to CB M -CB m model, the solid-liquid contact area equals the projected area and the water contact angles on these papillae arrays can be predicted according to Equation (2). The projected area (S SL ) of the solid-liquid interface can be calculated by S SL = π(d/2) 2 .…”
Section: Superhydrophobic Papillae Arrays For Microdroplet Manipulationmentioning
“…Controllable fabrication of hierarchical microarchitectures is of great significance for applications as diverse as soft actuators, [1,2] stretchable electronics, [3,4] cell culture, [5] water harvesting, [6,7] and microdroplet manipulation. [8,9] Although lithography and 3D printing techniques have been widely used to fabricate microarchitectures across multiple length scales, [10][11][12] it is still challenging to realize large-area fabrication of hierarchical microarchitecture arrays on curved substrates.…”
Section: Introductionmentioning
“…Additive manufacturing, often termed 3D printing, is a comprehensive materials development technique which has gained signification attention following its discovery in the 1980s [1][2][3][4][5][6][35][36][37]. At present this technology is experiencing significant growth and can now be applied using a wide range of methods, including material jetting [38,39], binder jetting [40,41], material extrusion [42][43][44][45][46], powder bed fusion [47,48], vat photopolymerization [37,[49][50][51][52][53], and sheet lamination [35,36,54,55].…”
Section: Introductionmentioning
“…Currently, 3D soft robots are typically manufactured through 3D printing and assembly with small actuators 12 , 13 . Compared to 3D shapes, 2D shapes are more space-efficient in terms of their spatial dimension 14 .…”
Section: Introductionmentioning
“…18 In the past few decades, 3D printing methods have been developed based on solid, liquid, and powder. 19–21 Among them, direct ink writing (DIW) based on liquid extrusion was the most commonly used strategy for hydrogel printing. In order to improve the printing efficiency and accuracy, additives such as nanoclay, nanocellulose, carrageenan, and other substances have been employed to adjust the viscosity and rheological properties of gels.…”
Section: Introductionmentioning