Solution-Processed Resistive Pressure Sensors Based on Sandwich Structures Using Silver Nanowires and Conductive Polymer

Lee, Jin Young; Kim, Gieun; Shin, Dong-Kyun; Park, Jongwoon

doi:10.1109/jsen.2018.2876142

Cited by 22 publications

(13 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, it is obvious from the Joule heating formula that the temperature of the e-skin will increase gradually with prolonged time of stimulation. 35 We have supplemented the temperature−time dependence test of the colorimetric sensor under pressure (Figure S2a), strain (Figure S2b), and voltage (Figure S2c) control to support the Figure 4a−c. Furthermore, to reveal the visualization feature of our colorimetric sensor, relationship between bioskin color and device temperature is investigated using a digital camera to record the color change process of the bioskin from 23 to 34 °C (Figure 4d) under a certain external stimulus at room temperature (20 °C).…”

Section: ■ Results and Discussionmentioning

confidence: 81%

Multimode Visualization of Electronic Skin from Bioinspired Colorimetric Sensor

Ban

Xiu

et al. 2021

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Bioskins possess a great ability to detect and deliver external mechanical or temperature stimuli into identifiable signals such as color changes. However, the integration of visualization with simultaneous detection of multiple complex external stimuli in a single biosensor device remains a challenge. Here we propose an allsolution-processed bioinspired stretchable electronic skin with interactive color changes and four-mode sensing properties. The fabricated biosensor demonstrates sensitive responses to various stimuli including pressure, strain, voltage, and temperature. Sensing visualization is realized by color changes of the e-skin from brown to green and finally bright yellow as a response to intensified external stimuli, suggesting great application potential in military defense, healthcare monitoring, and smart bionic skin.

show abstract

Section: ■ Results and Discussionmentioning

confidence: 81%

Multimode Visualization of Electronic Skin from Bioinspired Colorimetric Sensor

Ban

Xiu

et al. 2021

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

“…The printed TPU fibers were aligned in parallel in each textile, while vertically between the upper and lower textiles to form an oblique lattice structure. Unlike the reported sandwich structure between two or more uniform polymer films, which exhibited high conductivity but low stretchability, [ 21,23 ] such packing mode of TPU fibers in the two 3D‐printed fibrous textiles are of special relevance for high stretchability and sensitivity because of several distinct advantages in strain response, such as 1) the lattice diagonal was just in the direction of external force; therewith, the deformed TPU fibers under stretching in the upper and lower textiles squeezed Ag NPs undergoing shearing motion to compensate for the disconnected electrical pathway; 2) the denser Ag NPs in the grooves between two parallel TPU fibers acted as a warehouse to make up for the lack of Ag NPs in the elongated circuit. As a result, the as‐prepared strain sensor based on the printed TPU/Ag composites with sandwich structure showed large stretchability up to 138%, high sensitivity with GFs of 2374, 4180, 11 477, and 38 220 over the strain ranges of 0–60, 60–90, 90–120, and 120–138%, respectively, long‐term durability with more than 2500 cycle life at 50% strain.…”

Section: Introductionmentioning

confidence: 98%

High‐Performance Stretchable Strain Sensor Based on Ag Nanoparticles Sandwiched between Two 3D‐Printed Polyurethane Fibrous Textiles

Han

Xiao

Wen

et al. 2021

Adv Elect Materials

View full text Add to dashboard Cite

Developing stretchable strain sensors with high stretchability as well as sensitivity via a scalable technique is still a challenge that remains to be addressed. Herein, high‐performance stretchable strain sensors based on Ag nanoparticles (NPs) sandwiched between two thermoplastic polyurethane (TPU) fibrous textiles are fabricated by combining 3D‐printed TPU elastomer and solution‐coated Ag NP pulp, in which a conductive network is formed at a low loading of 4.3 wt% Ag NPs. The printed TPU fibers in each textile are arranged in parallel, while perpendicular to each other between the upper and lower textiles, forming an oblique lattice structure with their diagonal being the same direction as the external force. Under stretching, the deformed TPU fibers in the upper and lower textiles squeezed Ag NPs to undergo shearing motion, such that the disconnected electrical circuit can be compensated by some Ag NPs to retain the electrical pathway. Consequently, the printed TPU/Ag strain sensors showed high sensitivity (gauge factor of 38220 at a strain of 120–138%), wide working strain range (0–138%), and long‐term durability (>2500 cycles at 50% strain). Their promise as flexible electronic components is demonstrated in wearable motion detection systems for monitoring human motions and recognizing facial expressions.

show abstract

“…A resistive pressure sensor based on a solution-processed bilayer structure (AgNW/polymer) was introduced by Lee et al. , demonstrating a high sensitivity . Zhou et al reported a flexible capacitive pressure sensor using a hair-like micro cilia array as the dielectric layer .…”

Section: Introductionmentioning

confidence: 99%

“…43 A resistive pressure sensor based on a solutionprocessed bilayer structure (AgNW/polymer) was introduced by Lee et al, demonstrating a high sensitivity. 44 Zhou et al reported a flexible capacitive pressure sensor using a hair-like micro cilia array as the dielectric layer. 45 Additionally, Jang et al proposed a fully integrated and active-matrix array with pressure-sensitive MoS 2 transistors with mechanoluminescent layers and air dielectrics for a wide detectable range from footsteps to cellular motions.…”

Section: ■ Introductionmentioning

confidence: 99%

Real-Time Intraoperative Pressure Monitoring to Avoid Surgically Induced Localized Brain Injury Using a Miniaturized Piezoresistive Pressure Sensor

et al. 2020

View full text Add to dashboard Cite

Neurosurgical procedures often cause damage to the brain tissue at the periphery from surgical manipulations. Especially during retraction, a large amount of pressure could be applied on the brain surface, which can damage it, leading to brain herniation, which can be fatal for patients. To resolve this issue, we have developed a pressure sensor that can be used to monitor the applied pressure during surgery for intraoperative care. This device was tested on a rodent model to create a superficial surgically induced damage profile for three different applied pressures (30, 50, and 70 mmHg) and compared to a standard intracranial pressure monitoring system. Magnetic resonance imaging has been performed after surgical procedures to detect the herniation caused by applied pressure. To evaluate the damage to brain cells and tissue rupture, histological analysis was performed using hematoxylin and eosin staining. A scoring system was developed to understand the severity of the surgically induced brain injury, which will help neurosurgeons to limit the pressure to an optimum point without causing damage.

show abstract

Solution-Processed Resistive Pressure Sensors Based on Sandwich Structures Using Silver Nanowires and Conductive Polymer

Cited by 22 publications

References 27 publications

Multimode Visualization of Electronic Skin from Bioinspired Colorimetric Sensor

Multimode Visualization of Electronic Skin from Bioinspired Colorimetric Sensor

High‐Performance Stretchable Strain Sensor Based on Ag Nanoparticles Sandwiched between Two 3D‐Printed Polyurethane Fibrous Textiles

Real-Time Intraoperative Pressure Monitoring to Avoid Surgically Induced Localized Brain Injury Using a Miniaturized Piezoresistive Pressure Sensor

Contact Info

Product

Resources

About