Fast Digital Patterning of Surface Topography toward Three-Dimensional Shape-Changing Structures

Chen, Zhou; Linghu, Changhong; Yu, Keke; Zhu, Jinye; Luo, Hongyu; Qian, Chunlu; Chen, Yin; Du, Yipu; Zhang, Shun; Song, Jizhou

doi:10.1021/acsami.9b17343

Cited by 12 publications

(10 citation statements)

References 39 publications

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“…Trueness refers to the closeness of a measurement to the actual value and precision expresses the degree of reproducibility between repeated measurements. The surface topography produced from the scanners defines the nature of a surface and is often used to describe the surface characteristics, such as surface roughness, waviness, and flatness [15].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Intraoral and Extraoral Digital Scanners: Evaluation of Surface Topography and Precision

et al. 2020

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The aim of this study was to evaluate the surface topography and the precision measurements of different intraoral and extraoral digital scanners. A reference model of a maxillary arch with four implant analogs was prepared and scanned by three intraoral and two extraoral scanners. The reference model was scanned fifteen times with each digital scanning system, investigating the surface topography and precision measurements for the same-arch and cross-arch measurements. The data was exported to 3D inspection and mesh-processing software (GOM Inspect, Braunschweig, Germany). Statistical analysis was performed using a one-way Analysis of Variance (ANOVA) with the Tukey method for pairwise comparisons. The effect of parameters on generating the surface topography was analyzed by Univariate Linear Regression Analysis. Of the scanner systems evaluated, iTero (IT) exhibited the most number of triangulation points, followed by Trios 3 Shape (TR) and Straumann Cares (SC). There were no significant differences observed in the surface topography when comparing flat and contoured surfaces, the anterior and posterior position, and interproximal areas. For the precision measurement in the same quadrant, no statistical difference was noted between intra- and extraoral scanners. However, the extraoral scanners showed substantially higher precision measurements for the cross-arch measurement. Surface topography did not correlate to precision. Rather, precision correlated with the scanning mechanism. For a quadrant scanning, both intraoral and extraoral scanners are recommended, but extraoral scanners are recommended for a full-arch scanning.

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Section: Introductionmentioning

confidence: 99%

Comparison of Intraoral and Extraoral Digital Scanners: Evaluation of Surface Topography and Precision

et al. 2020

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“…This PDMS structure can be flipped to reversed state and flipped back to the original state through snapping stimuli. One surface of the bistable structure is then oxidized by UV/ozone (UVO) treatment to introduce a thin film for polar solvent expansion 31 (e.g., ethanol, acetone, etc. ), as shown in Figures 1b and S1a.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Soft, Bistable Actuators for Reconfigurable 3D Electronics

Zhou

Kong

et al. 2021

ACS Appl. Mater. Interfaces

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Existing strategies for reconfigurable three-dimensional (3D) electronics are greatly constrained by either the complicated driven mechanisms or harsh demands for conductive materials. Developing a simple and robust strategy for 3D electronics reconstruction and function extension remains a challenge. Here, we propose a solvent-driven bistable actuator, which acts as a substrate to reconstruct the combined 3D electronic device. Extraction of silicon oil from a hybrid poly(dimethylsiloxane) (PDMS) circle sheet buckles the dish to a bistable structure. The ultraviolet (UV)/ozone treatment on one surface of the PDMS structure introduces an oxidized layer, yielding a bilayered, solvent-driven bistable smart actuator. The snap-back stimulus to the oxidized layer differs from the snap-through stimulus. Experimental and numerical studies reveal the fundamental regulations for buckling configurations and the bistable behavior of the actuator. The prepared bistable actuator drives the bonded kirigami polyimide (PI) sheets to diverse 3D structures from the original bending configuration, reversibly. A frequencyreconfigurable electrically small monopole antenna is presented as a demonstration, which paves a way for the applications of this actuator in the field of reconfigurable 3D electronics.

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“…Therefore, they are promising for the biomedical applications of microcoils. Three-dimensional silicone microstructures can be produced using digital laser engraving 20 and laser direct writing. 21 However, these methods require expensive equipment.…”

Section: Introductionmentioning

confidence: 99%

Coil Formation of a Silicone String Using UV–Ozone Treatment

et al. 2022

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Microcoils are used in various mechanical devices. However, existing methods for producing microcoils from polymers often require expensive equipment. In this study, microcoils were prepared using a cost-effective and simple method. The material used was silicone, which is a biocompatible polymeric material. Silicone was solidified inside glass capillaries to form thin, straight strings with a diameter of 140 μm. The string was then transformed to a coil shape by oxidation using UV–ozone treatment while it was prestretched and pretwisted. The resilience force from the prestretching and pretwisting forces caused the string to bend and twist, respectively. As a result of the combination of these deformation modes, a coil was formed. As an application of the coils, an actuator was prepared, which repeatedly transforms between straight and coiled shapes. The actuation was caused by the swelling/deswelling of silicone with hexane. A large strain of 54% was obtained.

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Fast Digital Patterning of Surface Topography toward Three-Dimensional Shape-Changing Structures

Cited by 12 publications

References 39 publications

Comparison of Intraoral and Extraoral Digital Scanners: Evaluation of Surface Topography and Precision

Comparison of Intraoral and Extraoral Digital Scanners: Evaluation of Surface Topography and Precision

Soft, Bistable Actuators for Reconfigurable 3D Electronics

Coil Formation of a Silicone String Using UV–Ozone Treatment

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