Control of silver nanowire-elastomer nanocomposite networks through elaborate direct printing for ultrathin and stretchable strain sensors

2020 ◽  
Vol 200 ◽  
pp. 108471
Author(s):  
Jun-Ik Park ◽  
Do-Kyung Kim ◽  
Jaewon Jang ◽  
In Man Kang ◽  
Hyeok Kim ◽  
...  
Keyword(s):  
Strain Sensors ◽  
Silver Nanowire ◽  
Direct Printing

A highly stretchable and transparent silver nanowire/thermoplastic polyurethane film strain sensor for human motion monitoring

2019 ◽  
Vol 6 (11) ◽  
pp. 3119-3124 ◽  
Author(s):  
Runfei Wang ◽  
Wei Xu ◽  
Wenfeng Shen ◽  
Xiaoqing Shi ◽  
Jian Huang ◽  
...  
Keyword(s):  
Silver Nanowires ◽  
Thermoplastic Polyurethane ◽  
Human Motion ◽  
Strain Sensors ◽  
Silver Nanowire ◽  
Transparent Film ◽  
Polyurethane Film ◽  
Highly Stretchable ◽  
Human Motion Monitoring ◽  
Human Motions

Transparent film strain sensors based on silver nanowires and thermoplastic polyurethane are promising candidates for detecting various human motions and monitoring the mass of some kinetic objects.

Secondary Sensitivity Control of Silver-Nanowire-Based Resistive-Type Strain Sensors by Geometric Modulation of the Elastomer Substrate

Small ◽  
2017 ◽  
Vol 13 (23) ◽  
pp. 1700070 ◽  
Author(s):  
Yunjeong Heo ◽  
Youngkyu Hwang ◽  
Hoon Sun Jung ◽  
Sung-Hoon Choa ◽  
Heung Cho Ko
Keyword(s):  
Type Strain ◽  
Strain Sensors ◽  
Silver Nanowire ◽  
Sensitivity Control ◽  
Resistive Type

scholarly journals Multidimensional Aligned Nanowires Array: Toward Bendable and Stretchable Strain Sensors

Coatings ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 975
Author(s):  
Lili Meng ◽  
Jingchao Zhu ◽  
Ruixin Bian ◽  
Bojie Xu ◽  
Zhongxue Tang ◽  
...  
Keyword(s):  
Liquid Film ◽  
Normal Direction ◽  
Strain Sensors ◽  
Silver Nanowire ◽  
Flexible Electrode ◽  
Dewetting Process ◽  
Resistance Response ◽  
Nanotube Array ◽  
Carbon Nanotube Array ◽  
Nanowires Array

Micropatterns based on the oriented nanowires have attracted research interests for their unique physicochemical advantages in various applications of electric microdevices. Here, we proposed a facile fibrous dewetting strategy by spreading and dewetting of the silver nanowire (AgNW) solution on the vertical aligned carbon nanotube array (ACNTs) for preparing multidimensional aligned nanowires array, based on the elastocapillary coalescence. The unidirectional shrinking of the liquid film on the top of ACNTs happens during the dewetting process, as a result of the elastocapillary coalescence of ACNTs, which drives the AgNWs aligned along normal direction of liquid film shrinkage on the top of ACNTs. Thus, a multidimensional aligned NWs array was prepared, composing of the horizontally oriented NWs of top layer and vertical ACNT bundles of under layer connected by CNT yarns. A bendable flexible electrode was prepared using the as-prepared multidimensional aligned nanowires array, showing high stability during bending cycles (1800 cycles). Moreover, the multidimensional aligned nanowires array is also applicable for fabricating strain sensors, which show stable resistance response under strain. We envision that the as-developed approach shed new light on easy manufacture NW-based micropatterns.

scholarly journals Synergistic Effect of Graphene/Silver Nanowire Hybrid Fillers on Highly Stretchable Strain Sensors Based on Spandex Composites

Nanomaterials ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 2063
Author(s):  
Tan Thong Vo ◽  
Hyeon-Jong Lee ◽  
Sang-Yun Kim ◽  
Ji Won Suk
Keyword(s):  
Synergistic Effect ◽  
High Performance ◽  
Silver Nanowires ◽  
Large Strain ◽  
Strain Range ◽  
Strain Sensors ◽  
Silver Nanowire ◽  
Gauge Factor ◽  
Hybrid Fillers ◽  
Conductive Nanomaterials

Embedding conductive nanomaterials into elastomeric polymer matrices is one of the most promising approaches for fabricating stretchable strain sensors capable of monitoring large mechanical movements or deformation through the detection of resistance changes. Here, hybrid fillers comprising graphene and silver nanowires (AgNWs) are incorporated into extremely stretchable spandex to fabricate strain sensors. Composites containing only graphene and those containing the graphene/AgNW hybrid fillers are systematically investigated by evaluating their electrical and mechanical properties. The synergistic effect between graphene and AgNWs enable the strain sensors based on the composites to experience a large strain range of up to 120%, and low hysteresis with a high gauge factor of 150.3 at a strain of 120%. These reliable strain sensors are utilized for monitoring human motions such as heartbeats and body movements. The findings of this study indicate the significant applicability of graphene/AgNW/spandex composites in future applications that demand high-performance stretchable strain sensors.

scholarly journals Direct Printing of Strain Sensors via Nanoparticle Printer for the Applications to Composite Structural Health Monitoring

Procedia CIRP ◽  
2017 ◽  
Vol 66 ◽  
pp. 238-242 ◽  
Author(s):  
Gil-Yong Lee ◽  
Min-Soo Kim ◽  
Hae-Sung Yoon ◽  
Jinkyu Yang ◽  
Jeong-Beom Ihn ◽  
...  
Keyword(s):  
Structural Health Monitoring ◽  
Health Monitoring ◽  
Strain Sensors ◽  
Structural Health ◽  
Direct Printing

Stretchable and Sensitive Silver Nanowire-Hydrogel Strain Sensors for Proprioceptive Actuation

2021 ◽  
Author(s):  
Kirthika Senthil Kumar ◽  
Lei Zhang ◽  
Manivannan Sivaperuman Kalairaj ◽  
Hritwick Banerjee ◽  
Xiao Xiao ◽  
...  
Keyword(s):  
Strain Sensors ◽  
Silver Nanowire

scholarly journals A Multifunctional Wearable Device with a Graphene/Silver Nanowire Nanocomposite for Highly Sensitive Strain Sensing and Drug Delivery

2019 ◽  
Vol 5 (2) ◽  
pp. 17 ◽  
Author(s):  
Ge Shi ◽  
Tianqing Liu ◽  
Zlatko Kopecki ◽  
Allison Cowin ◽  
Ivan Lee ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Drug Delivery System ◽  
Delivery System ◽  
Transdermal Drug Delivery ◽  
Cost Effective ◽  
Strain Sensors ◽  
Silver Nanowire ◽  
Transdermal Drug Delivery System ◽  
Human Interface ◽  
Highly Sensitive

Advances in wearable, highly sensitive and multifunctional strain sensors open up new opportunities for the development of wearable human interface devices for various applications such as health monitoring, smart robotics and wearable therapy. Herein, we present a simple and cost-effective method to fabricate a multifunctional strain sensor consisting of a skin-mountable dry adhesive substrate, a robust sensing component and a transdermal drug delivery system. The sensor has high piezoresisitivity to monitor real-time signals from finger bending to ulnar pulse. A transdermal drug delivery system consisting of polylactic-co-glycolic acid nanoparticles and a chitosan matrix is integrated into the sensor and is able to release the nanoparticles into the stratum corneum at a depth of ~60 µm. Our approach to the design of multifunctional strain sensors will lead to the development of cost-effective and well-integrated multifunctional wearable devices.

scholarly journals Transparent Wearable Sensor for Early Extravasation Detection

Proceedings ◽  
2020 ◽  
Vol 56 (1) ◽  
pp. 8
Author(s):  
Hsuan-Chin Lu ◽  
Ying-Chih Liao
Keyword(s):  
Electrical Contact ◽  
Silver Nanowire ◽  
Wearable Sensor ◽  
Large Area ◽  
Electrical Contact Resistance ◽  
Pressure Sensing ◽  
Direct Printing ◽  
Flexible Film ◽  
Multiple Detection ◽  
Variation Mechanism

In this work, we present a wearable sensor patch for the early detection of extravasation by using a simple, direct printing process. Interdigitated electrodes are printed on a flexible film, which can be attached to skin. The electrodes are integrated with a top electrode to form a flexible pressure-sensing device utilizing an electrical contact resistance (ECR) variation mechanism. The detector possesses good sensitivity and a low detection limit for pressure variation. By adjusting the printing parameters, sensors of millimeter size can be fabricated and allow the potential for multiple detection points in a large area. In addition, by using silver nanowire inks, the sensor becomes nearly transparent to prevent patients’ panic. The possibility and feasibility of this device for early extravasation detection is also evaluated.

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