Embedded sensing: Integrating sensors in 3-D printed structures

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Abstract

Current additive manufacturing allows for the implementation of electrically interrogated 3-D printed sensors. In this contribution various technologies, sensing principles and applications are discussed. We will give both an overview of some of the sensors presented in literature as well as some of our own recent work on 3-D printed sensors. The 3-D printing methods discussed include fused deposition modelling (FDM), using multi-material printing and poly-jetting. Materials discussed are mainly thermoplastics and include thermoplastic polyurethane (TPU), both un-doped as well as doped with carbon black, polylactic acid (PLA) and conductive inks. The sensors discussed are based on biopotential sensing, capacitive sensing and resistive sensing with applications in surface electromyography (sEMG) and mechanical and tactile sensing. As these sensors are based on plastics they are in general flexible and therefore open new possibilities for sensing in soft structures, e.g. as used in soft robotics. At the same time they show many of the characteristics of plastics like hysteresis, drift and non-linearity. We will argue that 3-D printing of embedded sensors opens up exciting new possibilities but also that these sensors require us to rethink how to exploit non-ideal sensors.

Original languageEnglish
Pages (from-to)169-181
Number of pages13
JournalJournal of Sensors and Sensor Systems
Volume7
Issue number1
DOIs
Publication statusPublished - 23 Mar 2018

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sensors
Sensors
printing
Printing
Thermoplastics
3D printers
plastics
electromyography
Plastics
Electromyography
inks
Carbon black
robotics
Ink
Polyurethanes
Hysteresis
Robotics
manufacturing
hysteresis
nonlinearity

Cite this

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title = "Embedded sensing: Integrating sensors in 3-D printed structures",
abstract = "Current additive manufacturing allows for the implementation of electrically interrogated 3-D printed sensors. In this contribution various technologies, sensing principles and applications are discussed. We will give both an overview of some of the sensors presented in literature as well as some of our own recent work on 3-D printed sensors. The 3-D printing methods discussed include fused deposition modelling (FDM), using multi-material printing and poly-jetting. Materials discussed are mainly thermoplastics and include thermoplastic polyurethane (TPU), both un-doped as well as doped with carbon black, polylactic acid (PLA) and conductive inks. The sensors discussed are based on biopotential sensing, capacitive sensing and resistive sensing with applications in surface electromyography (sEMG) and mechanical and tactile sensing. As these sensors are based on plastics they are in general flexible and therefore open new possibilities for sensing in soft structures, e.g. as used in soft robotics. At the same time they show many of the characteristics of plastics like hysteresis, drift and non-linearity. We will argue that 3-D printing of embedded sensors opens up exciting new possibilities but also that these sensors require us to rethink how to exploit non-ideal sensors.",
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Embedded sensing : Integrating sensors in 3-D printed structures. / Werkman, Patrick; Welleweerd, Marcel; Wolterink, Gerhard Jan Willem; Eijking, Bram; Delamare, John; Sanders, Remco; Krijnen, Gijs J.M.; Dijkshoorn, Alexander.

In: Journal of Sensors and Sensor Systems, Vol. 7, No. 1, 23.03.2018, p. 169-181.

Research output: Contribution to journalArticleAcademicpeer-review

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