Aerosol Jet Printed Tactile Sensor on Flexible Substrate

Olowo, Olalekan O.; Zhang, Ruoshi; Wei, Danming; Ratnayake, Dilan; Jackson, Douglas; Popa, Dan O.

doi:10.1109/fleps53764.2022.9781498

Cited by 4 publications

(6 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[150] Olowo et al build upon this work by constructing the same circular patterned gauge and utilizing a Xenon intense pulse light annealing approach. [120] Olowo et al also recently applied AJP to deposit a laminated patch of PE-DOT:PSS, a polymer that bestows skin-like sensors with piezoresistive ability, on top of a constructed robotic skin sensor, demonstrating a reduction in processing time from 5 h to under 30 min. [151] These recent advancements demonstrate that AJP may be poised to bridge the gap between needs and current solutions.…”

Section: Touch Sensors and Robotics Applicationsmentioning

confidence: 99%

“…[ 2 ] Additionally, in printed silver nanoparticle lines, which represent the most well‐studied of all metallic systems, the calculated resistivity is approximately twice that of bulk silver, though some studies have demonstrated approximately equal conductivities. [ 120 ] Particularly for sensing technologies aimed at wearable applications, fabricated devices require a high level of stretchability and flexibility; therefore, characterization of the mechanical properties of AJP‐based sensors remains another key area of investigation. Within wearables, devices as well as interconnects must retain functionality under mechanical deformation, where the mechanical properties of the device are dictated by those of the underlying substrate.…”

Section: Enabling Componentsmentioning

confidence: 99%

“…Direct-write printing has been widely adopted in sensor fabrication due to readily accessible simplified printing methods and the availability of diverse raw material choices for practical print designs. [270] AJP, in particular, as a noncontact method featuring [ 84,129,39,89,40] automotive, [ 129] structural health monitoring, [ 39,84,111,124,119,57,135,108,26] human-machine interfaces, [ 39,89] smart connected objects, [ 21,41,106] smart bandages, [ 102] smart personal protective equipment, [91] aerospace, [ 125,108,142,139,119] touch sensing, [89] robotics, [ 127,96,89,149,120,148,147] Internet of Things integration, [ 21,41,84,106] engineering, [ 57,107,135] surgery, [ 127] military operations, [89] nuclear,…”

Section: Prospectsmentioning

confidence: 99%

“…[45,116,119] In addition to surface microstructure, both spatial resolution and line conductivity determines the quality of the printed line. Thus, the electrical properties of AJP-based sintered printed lines are generally characterized through resistance measurements using a two- [2] or four-point [120] probe method. Parameters including carrier gas rate, stage speed, and focusing ratio have been demonstrated to affect the resultant resistivity of printed lines using AJP methods.…”

Section: Characterizationmentioning

confidence: 99%

See 3 more Smart Citations

Aerosol‐Jet Printed Sensors for Environmental, Safety, and Health Monitoring: A Review

Fisher

Skolrood

et al. 2023

Adv Materials Technologies

View full text Add to dashboard Cite

An emergent direct‐write approach, aerosol‐jet printing (AJP), is gaining attention for the deployment of rapid and affordable microadditively manufactured energy‐efficient sensors and printed electronics. AJP enables a broad range of ink viscosities (0.001–1 Pa s) for printing diverse materials ranging from ceramics and metals to polymers and biological matter. Reproducible, high‐spatial‐resolution features (≈10 µm), and wide standoff distances (1–11 mm) between the nozzle and the substrate facilitate conformal printing of complex geometrical designs on nonplanar—e.g., stepped or curved—surfaces. This paper aims to provide a comprehensive overview of state‐of‐the‐art AJP‐based sensors (e.g., strain and temperature gauges, biosensors, photosensors, humidity and surface acoustic wave sensors, dielectric elastomer actuators, and motion, smoke, and hazardous gas detectors) and to discuss prospective applications. The drive toward cost‐effective devices that are smaller, lighter, and better‐performing remains a frontier challenge in the field of printed electronics. Consequently, as AJP becomes increasingly utilized in the high‐volume manufacturing of miniaturized active and passive sensors, it opens a pathway for facile large‐scale fabrication of devices for a wide range of consumer and industrial applications, including transportation, agriculture, infrastructure, aerospace, national defense, and healthcare.

show abstract

Section: Touch Sensors and Robotics Applicationsmentioning

confidence: 99%

Section: Enabling Componentsmentioning

confidence: 99%

Section: Prospectsmentioning

confidence: 99%

Section: Characterizationmentioning

confidence: 99%

See 2 more Smart Citations

Aerosol‐Jet Printed Sensors for Environmental, Safety, and Health Monitoring: A Review

Fisher

Skolrood

et al. 2023

Adv Materials Technologies

View full text Add to dashboard Cite

show abstract

“…In our previous work [41][42][43], tactile sensors were fabricated using lengthy processes in a cleanroom. The substitution of the cleanroom process with additive manufacturing was proposed in [44,45] by depositing the organic polymer required for its piezoresistive behavior via inkjet printing and substituting the spin-coating technique used with PEDOT:PSS poly (3,4-ethylene dioxythiophene)-poly(styrene sulfonate) with aerosol jet printing and ink-jetting instruments. The results showed a significant reduction in fabrication time and improvements in yield and sensitivity.…”

Section: Contributionsmentioning

confidence: 99%

Design, Fabrication, and Characterization of Inkjet-Printed Organic Piezoresistive Tactile Sensor on Flexible Substrate

Olowo,

Harris,

Sills

et al. 2023

Sensors

Self Cite

View full text Add to dashboard Cite

In this paper, we propose a novel tactile sensor with a “fingerprint” design, named due to its spiral shape and dimensions of 3.80 mm × 3.80 mm. The sensor is duplicated in a four-by-four array containing 16 tactile sensors to form a “SkinCell” pad of approximately 45 mm by 29 mm. The SkinCell was fabricated using a custom-built microfabrication platform called the NeXus which contains additive deposition tools and several robotic systems. We used the NeXus’ six-degrees-of-freedom robotic platform with two different inkjet printers to deposit a conductive silver ink sensor electrode as well as the organic piezoresistive polymer PEDOT:PSS-Poly (3,4-ethylene dioxythiophene)-poly(styrene sulfonate) of our tactile sensor. Printing deposition profiles of 100-micron- and 250-micron-thick layers were measured using microscopy. The resulting structure was sintered in an oven and laminated. The lamination consisted of two different sensor sheets placed back-to-back to create a half-Wheatstone-bridge configuration, doubling the sensitivity and accomplishing temperature compensation. The resulting sensor array was then sandwiched between two layers of silicone elastomer that had protrusions and inner cavities to concentrate stresses and strains and increase the detection resolution. Furthermore, the tactile sensor was characterized under static and dynamic force loading. Over 180,000 cycles of indentation were conducted to establish its durability and repeatability. The results demonstrate that the SkinCell has an average spatial resolution of 0.827 mm, an average sensitivity of 0.328 mΩ/Ω/N, expressed as the change in resistance per force in Newtons, an average sensitivity of 1.795 µV/N at a loading pressure of 2.365 PSI, and a dynamic response time constant of 63 ms which make it suitable for both large area skins and fingertip human–robot interaction applications.

show abstract

Optimizing the Conductivity of a New Nanoparticle Silver Ink for Aerosol Jet Printing and Demonstrating Its Use as a Strain Gauge

Ratnayake¹,

Curry²,

Qu³

et al. 2023

IEEE Flex. Electron.

View full text Add to dashboard Cite

Aerosol Jet Printed Tactile Sensor on Flexible Substrate

Cited by 4 publications

References 5 publications

Aerosol‐Jet Printed Sensors for Environmental, Safety, and Health Monitoring: A Review

Aerosol‐Jet Printed Sensors for Environmental, Safety, and Health Monitoring: A Review

Design, Fabrication, and Characterization of Inkjet-Printed Organic Piezoresistive Tactile Sensor on Flexible Substrate

Optimizing the Conductivity of a New Nanoparticle Silver Ink for Aerosol Jet Printing and Demonstrating Its Use as a Strain Gauge

Contact Info

Product

Resources

About