Microfabricating 3D structures by laser origami

Piqué, Alberto; Mathews, Scott A.; Birnbaum, Andrew J.; Charipar, Nicholas A.

doi:10.1117/2.1201111.003952

Cited by 8 publications

(5 citation statements)

References 3 publications

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“…Likewise, pre-strained polymer films shrink upon heating and can be utilized as local hinges different from the bulk materials to induce folding (Figure 18b). [269] Stimuli-responsive polymers patterned as hinges can also control folding and unfolding of non-responsive laminates (Figure 18c)…”

Section: Figure 17mentioning

confidence: 99%

“2D or not 2D”: Shape-programming polymer sheets

Liu

Genzer

Dickey

2016

Progress in Polymer Science

315

206

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Section: Figure 17mentioning

confidence: 99%

“2D or not 2D”: Shape-programming polymer sheets

Liu

Genzer

Dickey

2016

Progress in Polymer Science

315

206

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“…Balkcorn and Mason [21] built the world's first origamifolding robot, which can fold simple origami. Pique et al [22] introduced a new technique to generate 3D microstructures by controlling out of plane folding of 2D patterns through a variety of laser sensitive actuators.…”

Section: Introductionmentioning

confidence: 99%

An Autonomous Laser Kirigami Method With Low-Cost Real-Time Vision-Based Surface Deformation Feedback System

Wang

et al. 2021

Preprint

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We introduce an autonomous laser kirigami technique, a novel custom manufacturing machine system which functions somewhat similar to a photocopier. This technique is capable of creating functional freeform shell structures using cutting and folding (kirigami) operations on sheet precursors. Conventional laser kirigami techniques are operated manually and rely heavily on precise calibrations. However, it is unrealistic to design and plan out the process (open loop) to realize arbitrary geometric features from a wide variety of materials. In our work, we develop and demonstrate a completely autonomous system, which is composed of a laser system, a 4-axis robotic arm, a real-time vision-based surface deformation monitoring system, and an associated control system. The laser system is based on the Lasersaur, which is a 120-Watt CO2 open source laser cutter. The robotic arm is employed to precisely adjust the distance between a workpiece and the laser lens so that a focused and defocused laser beam can be used to cut and fold the workpiece respectively. The four-axis robotic arm provides flexibility for expanding the limits of possible shapes, compared to conventional laser machine setups where the workpiece is fixed on rigid holders. The real-time vision-based surface deformation monitoring system is composed of four low-cost cameras, an integrated AI-assisted algorithm, and the sensors (detachable planar markers) mounted on the polymer-based sheet precursors, and allows real-time monitoring of the sheet forming process and geometric evolution with a geometric feature estimation error less than 5 % and delay time around 100ms. The developed control system manages the laser power, the laser scanning speed, the motion of the robotic arm based on the designed plan as well as the close-loop feedback provided by the vision-based surface deformation monitoring system. This cyber-physical kirigami platform can operate a sequence of cutting and folding processes in order to create kirigami objects. Hence, complicated kirigami design products with various different polygonal structures can be realized by undergoing sequential designed laser cuts, and bends (at any folding angles within designed geometric tolerance) using this autonomous kirigami platform.

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“…Shrinkable PS film was also patterned using etching and physical mask which lacked the flexibility of design geometries (Zhao et al, 1998). A laser cutter was utilised to fabricate origami structures from metal and paper (Piqué et al, 2011) (Silverberg et al, 2015. These actuators require burdensome manufacturing and vigorous chemical processing steps.…”

Section: Introductionmentioning

confidence: 99%

3D Printing of a Photo-thermal Self-folding Actuator

Zolfagharian¹,

Kouzani²,

Nasri‐Nasrabadi³

et al. 2017

KEG

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The demand for rapid and accurate fabrication of light-weight, biocompatible, and soft actuators in soft robotics has perused researchers to design and fabricate such products by rapid manufacturing techniques. The self-folding origami structure is a type of soft actuator that has applications in micro electro mechanical systems, soft electronics, and biomedical devices. 3-dimentional (3D) printing is a current manufacturing process that can be used for fabrication of involute soft self-folding products by means of shape memory polymer materials. This paper presents, for the first time, a method for developing a photo thermal self-folding soft actuator using a 3D bioplotter. Easily accessible and inexpensive pre-strained polystyrene is opted for the backbone of actuator. The polystyrene film (PS) is then structured in a hand shape gripper. Chitosan hydrogel and carbon black ink were combined for printing active hinges on the hand gripper. Various active hinges with different widths and thicknesses were printed on the hand gripper using the 3D bioplotter. An infra-red (IR) heating lamp was placed at a reasonable distance to emit IR light uniformly on the hand gripper. The temperature distribution on the hand gripper was observed using a thermographic camera and the bending angles of the samples were recorded by a video camera. It was observed that the bending angles of the hand fingers depend on factors such as the intensity of the heat flux generated by the IR light intensity, distance, onset temperature, geometry of the fingers such as width and thickness, and area of the hinges.

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Microfabricating 3D structures by laser origami

Abstract: A new technique generates 3D microstructures by controlled out-ofplane folding of 2D patterns through a variety of laser-based digital fabrication processes.

Cited by 8 publications

References 3 publications

“2D or not 2D”: Shape-programming polymer sheets

“2D or not 2D”: Shape-programming polymer sheets

An Autonomous Laser Kirigami Method With Low-Cost Real-Time Vision-Based Surface Deformation Feedback System

3D Printing of a Photo-thermal Self-folding Actuator

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