3D Printed Interconnects on Bendable Substrates for 3D Circuits

Nassar, Habib; Pullanchiyodan, Abhilash; Bhattacharjee, Mitradip; Dahiya, Ravinder

doi:10.1109/fleps.2019.8792234

Cited by 12 publications

(2 citation statements)

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“…1a and 1b). The housing of the channel and the capacitive sensors are all printed as one structure using multimaterial 3D printing techniques [38,39]. The sensor utilizes the principle of capacitive fluid level sensing to determine the orientation of any object it is attached to.…”

Section: Introductionmentioning

confidence: 99%

3D Printed Interdigitated Capacitor Based Tilt Sensor

2021

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This paper presents a tilt sensor comprising of 3D printed capacitive sensors located at the four ends of a '+' shaped channel to provide the orientation of objects by using the capacitive fluid level measurement concept. The interdigitated capacitive sensors were developed by 3D printing and the channel was filled with ecoflex and silicone oil to obtain two variants of tilt sensor. The results show a change in the capacitance of ~11.5% and ~9.53% for ecoflex and silicone oil-based sensors respectively. A drift of ~2.6% is observed for ecoflex and ~0.16% for silicone oil. Considering the lower viscosity and the lower drift, the silicone oil-based tilt sensors were further investigated and two tilt sensors with varying silicone volumes (1ml and 1.5ml) were fabricated and compared for tilt angles ranging from 0 o to 30 o. The result from all four interdigitated capacitive sensors in the tilt sensing structure show similar rate of change in capacitance (~0.67% per degree increase in the tilt angle) with a standard deviation of ~±0.1%. However, the sensor with higher volume of silicone oil (1.5ml) saturated at a tilt angle of ~20 o which is ~10 o smaller than the response of the sensor fabricated with 1ml of silicone oil (saturated at 30 o). We also demonstrate the possibility of extending the sensor range by optimizing the volume of fluid and the channel's fluid capacity. With integration of fabricated tilt sensor with a robots' body, white cane or smart objects etc., it will be possible to obtain the information about orientation.

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Section: Introductionmentioning

confidence: 99%

3D Printed Interdigitated Capacitor Based Tilt Sensor

2021

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“…The latest advancements in materials and custom systems for 3D printers, have enhanced their capabilities even further. Some of the advantages can be found in 3D printed interconnects, embedded sensors, 3D printed antennas or 3D printed scaffolds, to name a few [28][29][30][31][32]. Lately, 3D printed technologies have been used in industries, such as automation, aeronautic, bioengineering or robotics as a prototyping method as well as to fabricate the final parts [33][34][35].…”

Section: Introductionmentioning

confidence: 99%

3D printed packaging of photovoltaic cells for energy autonomous embedded sensors

2020

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Most robotic/prosthetic hands lack the ability to harvest energy, and as a result they rely on the batteries to provide the required energy for their operation. Recently solar cells have been explored to meet the energy requirements. However, most solar cells are brittle, and their chances of getting damaged during robotic operation are high. The work presented in this paper addresses this challenge through a transparent 3D printed package covering three photovoltaic cells. The package protects the cells from impact and prevents dust accumulation while ensuring minimal loss of light reaching the cells. The effect of the protective 3D printed cover on the performance of photovoltaic panel have been evaluated. This solar cell package is integrate on a 3D printed robotic hand to harvest energy from the environmental illumination and utilizes it to power the small peripheral electronic and sensing components on the hand.

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