3D printed capacitive sensors

Shemelya, Corey; Cedillos, Fernando; Aguilera, Efrain; Maestas, E.; Ramos, J.A.; Espalin, David; Muse, Dan; Wicker, Ryan B.; MacDonald, Eric

doi:10.1109/icsens.2013.6688247

Cited by 59 publications

(28 citation statements)

References 16 publications

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“…For example, capacitive sensing can be enabled on printed objects by filling tubes inside the objects with conductive inks [174], interrupting the print process to integrate electronics [181] or combining conductive and non-conductive print materials [20,123,177]. Conductive yarns and fabrics open new possibilities for flexible electrode design, e.g., the integration into clothing [8,30,92,152,185].…”

Section: Sensor Design and Fabricationmentioning

confidence: 99%

Finding Common Ground

Große-Puppendahl

Holz

Cohn

et al. 2017

Proceedings of the 2017 CHI Conference on Human Factors in Computing Systems

164

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For more than two decades, capacitive sensing has played a prominent role in human-computer interaction research. Capacitive sensing has become ubiquitous on mobile, wearable, and stationary devices-enabling fundamentally new interaction techniques on, above, and around them. The research community has also enabled human position estimation and whole-body gestural interaction in instrumented environments. However, the broad field of capacitive sensing research has become fragmented by different approaches and terminology used across the various domains. This paper strives to unify the field by advocating consistent terminology and proposing a new taxonomy to classify capacitive sensing approaches. Our extensive survey provides an analysis and review of past research and identifies challenges for future work. We aim to create a common understanding within the field of human-computer interaction, for researchers and practitioners alike, and to stimulate and facilitate future research in capacitive sensing.

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Section: Sensor Design and Fabricationmentioning

confidence: 99%

Finding Common Ground

Große-Puppendahl

Holz

Cohn

et al. 2017

Proceedings of the 2017 CHI Conference on Human Factors in Computing Systems

164

View full text Add to dashboard Cite

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“…Capacitive markers can be fabricated by 3D printing [4,5]. In this paper, a script-based solid modelling framework OpenSCAD (Version 2015.03, available online: http://www.openscad.org/ about.html) was used to procedurally construct the individual 3D models for each capacitive marker's size and insulating layer (see exemplary Figures 3 and 4).…”

Section: D Printingmentioning

confidence: 99%

“…Following work extended this concept to a low-cost prototyping environment, i.e., Wiethoff et al used cardboard and conductive ink [3]. Shemelya et al described the manual assembly of conductive parts [4], Schneider and Götzelmann integrated this into an automatic 3D printing process [5]. To identify the respective tangible, they optimized the spatial arrangement of touch points for encoding information, while Yu et al [6] employed active modulation of the touch points.…”

Section: Introductionmentioning

confidence: 99%

“…Regarding the potential and limitations for future dissemination, those approaches seem more realistic. Unfortunately, all so far mentioned low-cost approaches [3][4][5] rely on either a human finger touch or an additional electrical contact to be functional. Voelker et al addressed this problem by making use of the capacitive touch screen's structure itself in order to detect untouched tangibles by capacitive bridging [14].…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of Capacitive Markers Fabricated by 3D Printing, Laser Cutting and Prototyping

2018

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With Tangible User Interfaces, the computer user is able to interact in a fundamentally different and more intuitive way than with usual 2D displays. By grasping real physical objects, information can also be conveyed haptically, i.e., the user not only sees information on a 2D display, but can also grasp physical representations. To recognize such objects ("tangibles") it is skillful to use capacitive sensing, as it happens in most touch screens. Thus, real objects can be located and identified by the touch screen display automatically. Recent work already addressed such capacitive markers, but focused on their coding scheme and automated fabrication by 3D printing. This paper goes beyond the fabrication by 3D printers and, for the first time, applies the concept of capacitive codes to laser cutting and another immediate prototyping approach using modeling clay. Beside the evaluation of additional properties, we adapt recent research results regarding the optimized detection of tangible objects on capacitive screens. As a result of our comprehensive study, the detection performance is affected by the type of capacitive signal processing (respectively the device) and the geometry of the marker. 3D printing revealed to be the most reliable technique, though laser cutting and immediate prototyping of markers showed promising results. Based on our findings, we discuss individual strengths of each capacitive marker type.

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“…56 They did not make fully printed devices. However, sensitivity dependency on the thickness of the upper part of copper wire lets it possible to make a fully covered sensor embedded in a rigid polymer frame.…”

mentioning

confidence: 99%

Advances in 2D/3D Printing of Functional Nanomaterials and Their Applications

Choi

Das

Theodore³

et al. 2015

ECS J. Solid State Sci. Technol.

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Advanced printing techniques include innovative and/or integrated processes that are used to produce an object with enhanced functionality and with a wide range of applications. This is done by realizing printing of functional materials such as ink, paste, polymer, ceramic powder, and organic materials. Unlike conventional manufacturing methods, a new technique is needed to manipulate small objects to fabricate desired parts, as materials are scaled down to the nanometer range. In this regard, the traditional subtractive production has been changed to a bottom-up approach as device structures have changed to multilayer structures which contain several functional nanomaterials. A powder is used to fabricate an object with a desired geometry. This reduces the material loss due to the bottom-up nature of the process. In this article, we review the current state of knowledge for advanced manufacturing using two methods, 3D printing and roll-to-roll manufacturing. 3D printers developed in the early 1980s1 has created a revolution in research and development and teaching laboratories due to a substantial price drop after 2010 and an easy software called plugplay that allows most people to use it without extensive technical help.2,3 Based on economic analysis, the market for 3D printers is growing significantly. This is driven by a number of sectors including aerospace, automotive, and medical/dental and the market was worth several billions in 2013. During the last decade, the business has increased exponentially due to the 3D printing technology enabling the fabrication of complex objects with enhanced functionalities and improved material properties.4,5 Desktop 3D printers were targeted primarily at hobbyists and consumers who are not in industry. However, the need of industry-level 3D printers has attracted a lot of attention from researchers and scientists in the fields of biotechnology, automotive, architecture, electrical, electronic, photonic, optical, and sensor engineering.6-10 Printers' resolution is dropping under 100 micrometers (250 dot per inch (DPI)) with a typical layer thickness of 100 micrometers. The primary advantage of a 3D printer is its ability to create any shape in the micrometer range up to several meter range depending on the supporting holder.Over the past few years a rapid growth in the 3D printing industry has been observed as evidenced by the enormous numbers of articles published in scientific journals and patents filed as illustrated in Figure 1. Advances in the 3D printing technology will also lead to significant price drop, owing to the fact that a lot of items will be manufactured depending only upon the type and need of the customer. 11This means that household-level production will be much preferred due to broader imagination and creativity of human being. Another implication is that the manufacturing process of any item can be highly customized because altering the items will not require tooling or intensive software development.12 These simplified production processes that were...

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3D printed capacitive sensors

Cited by 59 publications

References 16 publications

Finding Common Ground

Finding Common Ground

Evaluation of Capacitive Markers Fabricated by 3D Printing, Laser Cutting and Prototyping

Advances in 2D/3D Printing of Functional Nanomaterials and Their Applications

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