Force and slip detection with direct-write compliant tactile sensors using multi-walled carbon nanotube/polymer composites

Vatani, Morteza; Engeberg, Erik D.; Choi, Jaewon

doi:10.1016/j.sna.2013.03.019

Cited by 86 publications

(45 citation statements)

References 35 publications

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“…Generally, the width (w) of the conductive line is largely dependent on the drawing speed (s), air pressure (p) determining the flow rate, and distance (d) between the substrate and the dispensing tip [33,[36][37]. Dispensing experiments were accomplished using the DPC system to find the relationships among the three main factors, s, p, and w, by using a dispensing tip with the inner diameter of 250 μm.…”

Section: Dpc Experimentsmentioning

confidence: 99%

Direct-print/cure as a molded interconnect device (MID) process for fabrication of automobile cruise controllers

Yun

Vatani

et al. 2015

J Mech Sci Technol

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3D Molded interconnect device (MID) is referred to as a new paradigm of manufacturing electronic circuits with high design complexity by removing conventional wiring processes. Basically, manufacturing of MIDs consists of several steps: building a structure, creating conductive traces, and pick-and-place of electrical components. A 3D structure was built in a commercial Additive manufacturing (AM) machine, and conductive wires were created using a silver paste on the 3D structure with a predetermined design of an electronic circuit. A Direct-print/cure (DPC) process was developed to draw the conductive wires on the surface and simultaneously harden the created wires using thermal/radiation energy. This DPC system consists of a micro-dispensing device and light focusing module installed in a motorized xyz stage. Resistors were also printed using the developed DPC system and a synthesized carbon nanotube (CNT)/polymer composite. The CNT/polymer composite was characterized through a rheology test and Thermal gravimetric analysis (TGA). The resistance of the printed resistor can be controlled by varying its length and the width. Finally, an automobile cruise controller was fabricated with redesigned circuits for the suggested process and materials, which is a promising technology for building 3D MID parts.

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Section: Dpc Experimentsmentioning

confidence: 99%

Direct-print/cure as a molded interconnect device (MID) process for fabrication of automobile cruise controllers

Yun

Vatani

et al. 2015

J Mech Sci Technol

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“…Both layers of the CTS were fabricated using the process described in [13]. To provide a brief summary of the process, commercially available MWNTs (NanoLab, Waltham, MA, USA) were dispersed into a compliant photocurable resin (FuIlCure ® 930 TangoPlus, Stratasys Ltd, MN., USA).…”

Section: Compliant Tactile Sensorsmentioning

confidence: 99%

“…The voltages measured at the outputs of each Wheatstone half bridge were calibrated [13] and processed to indicate the location that a force was applied to the surface of the sensor. Specifically, the voltage output from any sensor strip, K, was filtered by This was done to make the resulting signals impervious to drift at the half bridge outputs and to filter 60Hz noise.…”

Section: Detecting Location Of Force Applicationmentioning

confidence: 99%

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Detection of the direction and speed of motion of forces on the surface of a compliant tactile sensor

Engeberg

Vatani

Choi

2013

2013 13th International Conference on Control, Automation and Systems (ICCAS 2013)

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A compliant tactile sensor (CTS) has been developed with two orthogonal layers of multi-walled carbon nanotubes (MWNTs) and polymer strips. This has enabled the detection of sliding motion along the surface of the sensor. This information is used to detect the motions of forces applied on the surface of the CTS. The speed of sliding motion in each direction can be updated with a resolution of 3mm in both of two perpendicular directions.

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“…Sensors for measuring the external force, for detecting the roughness and sensors for the temperature have been actively studied till now. 1,2 If robots are able to get lots of information of interaction with external environment by tactile sensation, robots can not only perform precise work but replace human task in dangerous situation. In addition, many studies mimicking sensation system of human have been conducted by popular demands of soft robotic field.…”

Section: Introductionmentioning

confidence: 99%

Development of compact slip detection sensor using dielectric elastomer

et al. 2015

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In this paper, we developed a resistance tactile sensor that can detect a slip on the surface of sensor structure. The presented sensor device has fingerprint-like structures that are similar with the role of the humans finger print. The resistance slip sensor that the novel developed uses acrylo-nitrile butadiene rubber (NBR) as a dielectric substrate and graphene as an electrode material. We can measure the slip as the structure of sensor makes a deformation and it changes the resistance through forming a new conductive route. To manufacture our sensor, we developed a new imprint process. By using this process, we can produce sensor with micro unit structure. To verify effectiveness of the proposed slip detection, experiment using prototype of resistance slip sensor is conducted with an algorithm to detect slip and slip is successfully detected. We will discuss the slip detection properties.

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Force and slip detection with direct-write compliant tactile sensors using multi-walled carbon nanotube/polymer composites

Cited by 86 publications

References 35 publications

Direct-print/cure as a molded interconnect device (MID) process for fabrication of automobile cruise controllers

Direct-print/cure as a molded interconnect device (MID) process for fabrication of automobile cruise controllers

Detection of the direction and speed of motion of forces on the surface of a compliant tactile sensor

Development of compact slip detection sensor using dielectric elastomer

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