Resistive crack-based nanoparticle strain sensors with extreme sensitivity and adjustable gauge factor made on flexible substrates

Nanoscale ◽  
2021 ◽  
Author(s):  
Evangelos Aslanidis ◽  
Evangelos Skotadis ◽  
Dimitris Tsoukalas
Keyword(s):  
Metallic Nanoparticles ◽  
Strain Sensors ◽  
Gauge Factor ◽  
Flexible Substrates ◽  
Highly Sensitive ◽  
Extreme Sensitivity

In this paper, we report the demonstration of highly sensitive flexible strain sensors formed by a network of metallic nanoparticles (NPs) grown in vacuum on top of a cracked thin...

scholarly journals Development of Highly Sensitive Strain Sensor Using Area-Arrayed Graphene Nanoribbons

Nanomaterials ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1701
Author(s):  
Ken Suzuki ◽  
Ryohei Nakagawa ◽  
Qinqiang Zhang ◽  
Hideo Miura
Keyword(s):  
Graphene Nanoribbons ◽  
Strain Sensor ◽  
Strain Sensors ◽  
Sensitive Strain ◽  
Bending Test ◽  
Gauge Factor ◽  
Four Point Bending ◽  
Current Voltage ◽  
Highly Sensitive ◽  
Current Voltage Relationship

In this study, a basic design of area-arrayed graphene nanoribbon (GNR) strain sensors was proposed to realize the next generation of strain sensors. To fabricate the area-arrayed GNRs, a top-down approach was employed, in which GNRs were cut out from a large graphene sheet using an electron beam lithography technique. GNRs with widths of 400 nm, 300 nm, 200 nm, and 50 nm were fabricated, and their current-voltage characteristics were evaluated. The current values of GNRs with widths of 200 nm and above increased linearly with increasing applied voltage, indicating that these GNRs were metallic conductors and a good ohmic junction was formed between graphene and the electrode. There were two types of GNRs with a width of 50 nm, one with a linear current–voltage relationship and the other with a nonlinear one. We evaluated the strain sensitivity of the 50 nm GNR exhibiting metallic conduction by applying a four-point bending test, and found that the gauge factor of this GNR was about 50. Thus, GNRs with a width of about 50 nm can be used to realize a highly sensitive strain sensor.

Ultra-stretchable and highly sensitive strain sensor based on gradient structure carbon nanotubes

Nanoscale ◽  
2018 ◽  
Vol 10 (28) ◽  
pp. 13599-13606 ◽  
Author(s):  
Binghao Liang ◽  
Zhiqiang Lin ◽  
Wenjun Chen ◽  
Zhongfu He ◽  
Jing Zhong ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Strain Sensor ◽  
High Sensitivity ◽  
Strain Sensors ◽  
Sensitive Strain ◽  
Gauge Factor ◽  
Gradient Structure ◽  
Highly Sensitive ◽  
Highly Stretchable

A highly stretchable and sensitive strain sensor based on a gradient carbon nanotube was developed. The strain sensors show an unprecedented combination of both high sensitivity (gauge factor = 13.5) and ultra-stretchability (>550%).

Highly sensitive screen printed strain sensors on flexible substrates via ink composition optimization

2019 ◽  
Vol 290 ◽  
pp. 1-7 ◽  
Author(s):  
Nickolas Anderson ◽  
Nicole Szorc ◽  
Vimal Gunasekaran ◽  
Shiv Joshi ◽  
Gregory Jursich
Keyword(s):  
Strain Sensors ◽  
Flexible Substrates ◽  
Highly Sensitive ◽  
Composition Optimization ◽  
Screen Printed

scholarly journals Waterproof Graphene-PVDF Wearable Strain Sensors for Movement Detection in Smart Gloves

Sensors ◽  
2021 ◽  
Vol 21 (16) ◽  
pp. 5277
Author(s):  
Hossein Cheraghi Bidsorkhi ◽  
Alessandro Giuseppe D’Aloia ◽  
Alessio Tamburrano ◽  
Giovanni De Bellis ◽  
Maria Sabrina Sarto
Keyword(s):  
Polyvinylidene Fluoride ◽  
Index Finger ◽  
Wearable Sensors ◽  
Proximal Interphalangeal Joint ◽  
Interphalangeal Joint ◽  
Strain Sensors ◽  
Nanocomposite Films ◽  
Gauge Factor ◽  
Movement Detection ◽  
Highly Sensitive

In this work, new highly sensitive graphene-based flexible strain sensors are produced. In particular, polyvinylidene fluoride (PVDF) nanocomposite films filled with different amounts of graphene nanoplatelets (GNPs) are produced and their application as wearable sensors for strain and movement detection is assessed. The produced nanocomposite films are morphologically characterized and their waterproofness, electrical and mechanical properties are measured. Furthermore, their electromechanical features are investigated, under both stationary and dynamic conditions. In particular, the strain sensors show a consistent and reproducible response to the applied deformation and a Gauge factor around 30 is measured for the 1% wt loaded PVDF/GNP nanocomposite film when a deformation of 1.5% is applied. The produced specimens are then integrated in commercial gloves, in order to realize sensorized gloves able to detect even small proximal interphalangeal joint movements of the index finger.

Carbon and metallic-based nanomaterials for strain sensors – a review

2021 ◽  
Vol 06 ◽  
Author(s):  
Pravan Omprakash ◽  
Udaya Bhat K ◽  
Devadas Bhat Panemangalore
Keyword(s):  
Health Monitoring ◽  
Metallic Nanoparticles ◽  
High Strength ◽  
Functionally Graded ◽  
Strain Sensors ◽  
Graded Materials ◽  
Mechanical And Electrical Properties ◽  
Highly Sensitive ◽  
Wide Range ◽  
Carbon Based

: Strain gauges are devices whose electrical resistances vary proportionately with the amount of strain applied on the device. They can be used for real-time applications in the aerospace sector, as a geotechnical tool in tunnels and bridges, in rail monitoring and health monitoring sectors. Nanomaterials have been widely used for this application because they can be flexible, stretchable and have high strength. Several researchers have used numerous carbon-based and metallic nanostructures to develop functionally graded materials. Among carbon-based materials, graphene has been widely researched as a viable material for strain sensors due to its superior mechanical and electrical properties. Also, many metallic nanoparticles have been investigated to design strain sensors that are highly sensitive at a wide range of strains. In this article, a review of carbon and metallic nanomaterial-based strain sensors is presented, with emphasis on applications pertaining to structural health monitoring and wearable devices.

scholarly journals Inkjet Printing of Highly Sensitive, Transparent, Flexible Linear Piezoresistive Strain Sensors

Coatings ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 51
Author(s):  
Ting-Kuo Kang
Keyword(s):  
Thin Film ◽  
Inkjet Printing ◽  
Mechanical Strain ◽  
Strain Range ◽  
Phase Segregation ◽  
Strain Sensors ◽  
Tunneling Effect ◽  
Gauge Factor ◽  
Highly Sensitive ◽  
Thin Film Resistors

Flexible strain sensors are fabricated by using a simple and low-cost inkjet printing technology of graphene-PEDOT:PSS (poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)) conductive ink. The inkjet-printed thin-film resistors on a polyethylene terephthalate (PET) substrate exhibit an excellent optical transmittance of about 90% over a visible wavelength range from 400 to 800 nm. While an external mechanical strain is applied to thin-film resistors as strain sensors, a gauge factor (GF) of the piezoresistive (PR) strain sensors can be evaluated. To improve the GF value of the PR strain sensors, a high resistive (HR) path caused by the phase segregation of the PEDOT:PSS polymer material is, for the first time, proposed to be perpendicular to the PR strain sensing direction. The increase in the GF with the increase in the HR number of the PR strain sensors without a marked hysteresis is found. The result can be explained by the tunneling effect with varied initial tunneling distances and tunneling barriers due to the increase in the number of HR. Finally, a high GF value of approximately 165 of three HR paths is obtained with a linear output signal at the strain range from 0% to 0.33%, further achieving for the inkjet printing of highly sensitive, transparent, and flexible linear PR strain sensors.

Strain and Photovoltaic Sensitivities of Dumbbell-Shape GNR-Base Sensors

2019 ◽  
Author(s):  
Jowesh Avisheik Goundar ◽  
Takuya Kudo ◽  
Qinqiang Zhang ◽  
Ken Suzuki ◽  
Hideo Miura
Keyword(s):  
Vapor Deposition ◽  
Tensile Strain ◽  
Incident Light ◽  
Chemical Vapor ◽  
Strain Sensors ◽  
Gauge Factor ◽  
Uniaxial Tensile ◽  
Incident Light Intensity ◽  
Highly Sensitive ◽  
Electronic Behavior

Abstract The area-arrayed dumbbell-shape Graphene Nano-Ribbons (GNRs) were fabricated by using chemical vapor deposition and photolithography technologies. The electronic behavior of the fabricated GNR-FET structure was evaluated for its photonic properties with an incident light intensity of 1-mW. The 200-nm wide GNRs structure showed metallic properties, while those with the width of 40 nm showed semiconductive properties as was expected. The light-induced photocurrent was observed in all the fabricated GNRs structures. The average photocurrent observed in the 2-mm wide graphene structure was 3.3 A/m2 and that observed in the 40-nm wide area-arrayed GNRs structure was 261 A/m2, respectively. Based on this photocurrent, the external photosensitivity of the 40-nm wide GNRs structure was about 2.6 × 105 A/W.m2 and this value was much larger than that of conventional Si-base solar cells. In addition, the effect of strain on the resistivity of GNRs was measured. Uniaxial tensile strain was applied to the area-arrayed GNRs structures with the width from 200 nm to 40 nm. The gauge factor obtained from the GNRs with the width wider than 100 nm was about 3, and that with the width of 40 nm was about 160. Therefore, highly-sensitive strain sensors can be realized by using GNRs thinner than 70 nm.

2D end-to-end carbon nanotube conductive networks in polymer nanocomposites: a conceptual design to dramatically enhance the sensitivities of strain sensors

Nanoscale ◽  
2018 ◽  
Vol 10 (5) ◽  
pp. 2191-2198 ◽  
Author(s):  
Jun-Hong Pu ◽  
Xiang-Jun Zha ◽  
Min Zhao ◽  
Shengyao Li ◽  
Rui-Ying Bao ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Polymer Nanocomposites ◽  
Conceptual Design ◽  
Strain Sensor ◽  
Small Strain ◽  
Strain Sensors ◽  
Sensitive Strain ◽  
Gauge Factor ◽  
Highly Sensitive ◽  
End To End

A highly sensitive strain sensor with end-to-end CNT networks and showing a high gauge factor (248) at small strain (5%) is fabricated.

scholarly journals Preparation and Property Research of Strain Sensor Based on PDMS and Silver Nanomaterials

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Lihua Liu ◽  
Qiang Zhang ◽  
Dong Zhao ◽  
Aoqun Jian ◽  
Jianlong Ji ◽  
...  
Keyword(s):  
Flexible Electronics ◽  
High Performance ◽  
Strain Sensor ◽  
Strain Sensors ◽  
Gauge Factor ◽  
Thermal Method ◽  
Simple Method ◽  
Current Trends ◽  
Silver Nanomaterials ◽  
Highly Sensitive

Based on the advantages and broad applications of stretchable strain sensors, this study reports a simple method to fabricate a highly sensitive strain sensor with Ag nanomaterials-polydimethylsiloxane (AgNMs-PDMS) to create a synergic conductive network and a sandwich-structure. Three Ag nanomaterial samples were synthesized by controlling the concentrations of the FeCl3 solution and reaction time via the heat polyols thermal method. The AgNMs network’s elastomer nanocomposite-based strain sensors show strong piezoresistivity with a high gauge factor of 547.8 and stretchability from 0.81% to 7.26%. The application of our high-performance strain sensors was demonstrated by the inducting finger of the motion detection. These highly sensitive sensors conform to the current trends of flexible electronics and have prospects for broad application.

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