High Sensitivity Flexible Electronic Skin Based on Graphene Film

Electronic skin with high sensitivity, rapid response, and long-term stability has great value in robotics, biomedicine, and in other fields. However, electronic skin still has challenges in terms of sensitivity and response time. In order to solve this problem, flexible electronic skin with high sensitivity and the fast response was proposed, based on piezoresistive graphene films. The electronic skin was a pressure sensor array, composed of a 4 × 4 tactile sensing unit. Each sensing unit contained three layers: The underlying substrate (polyimide substrate), the middle layer (graphene/polyethylene terephthalate film), and the upper substrate bump (polydimethylsiloxane). The results of the measurement and analysis experiments, designed in this paper, indicated that the flexible electronic skin achieved a positive resistance characteristic in the range of 0 kPa–600 kPa, a sensitivity of 10.80 Ω /kPa in the range of 0 kPa–4 kPa, a loading response time of 10 ms, and a spatial resolution of 5 mm. In addition, the electronic skin realized shape detection on a regular-shaped object, based on the change in the resistance value of each unit. The high sensitivity flexible electronic skin designed in this paper has important application prospects in medical diagnosis, artificial intelligence, and other fields.

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High-performance humidity sensors from Ni(SO4)0.3(OH)1.4 nanobelts

Nanoscale ◽

10.1039/c4nr00277f ◽

2014 ◽

Vol 6 (12) ◽

pp. 6521-6525 ◽

Cited By ~ 7

Author(s):

Ming Zhuo ◽

Yuejiao Chen ◽

Tao Fu ◽

Haonan Zhang ◽

Zhi Xu ◽

...

Keyword(s):

High Performance ◽

Humidity Sensor ◽

High Sensitivity ◽

Fast Response ◽

Humidity Sensors ◽

Term Stability ◽

Long Term Stability

Ni(SO4)0.3(OH)1.4 nanobelts are utilized in a humidity sensor by a facile method. The nanobelt based sensor shows a high sensitivity, fast response and long-term stability in the sensing process.

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High performance electrochromic devices based on a polyindole derivative, poly(1H-benzo[g]indole)

Journal of Materials Chemistry C ◽

10.1039/c5tc02308d ◽

2015 ◽

Vol 3 (43) ◽

pp. 11318-11325 ◽

Cited By ~ 33

Author(s):

Guangming Nie ◽

Ling Wang ◽

Changlong Liu

Keyword(s):

Response Time ◽

High Performance ◽

Optical Memory ◽

Fast Response ◽

Electrochromic Devices ◽

Optical Contrast ◽

Fast Response Time ◽

Coloration Efficiency ◽

Long Term Stability

An ECD based on electrochromic poly(1H-benzo[g]indole) was fabricated. The color of this ECD can switch between green and navy blue with good optical contrast, high coloration efficiency, fast response time, better optical memory and long-term stability.

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3D geometrically structured PANI/CNT-decorated polydimethylsiloxane active pressure and temperature dual-parameter sensors for man–machine interaction applications

Journal of Materials Chemistry A ◽

10.1039/d0ta05651k ◽

2020 ◽

Vol 8 (30) ◽

pp. 15167-15176

Author(s):

Yalong Wang ◽

Hongye Mao ◽

Yao Wang ◽

Pengcheng Zhu ◽

Chenghao Liu ◽

...

Keyword(s):

High Sensitivity ◽

Fast Response ◽

Term Stability ◽

Long Term Stability ◽

Active Pressure ◽

Response Range ◽

Sensing Application ◽

Machine Interaction

A dual-parameter sensor with high sensitivity, broad response range, fast response and long-term stability in practical sensing application scenarios has been demonstrated.

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A dual-responsive fluorescent sensor for Hg2+ and thiols based on N-doped silicon quantum dots and its application in cell imaging

Journal of Materials Chemistry B ◽

10.1039/c9tb01502g ◽

2019 ◽

Vol 7 (44) ◽

pp. 7033-7041 ◽

Cited By ~ 3

Author(s):

Sansan Shen ◽

Bohui Huang ◽

Xiaofeng Guo ◽

Hong Wang

Keyword(s):

Quantum Dots ◽

Response Time ◽

Cell Imaging ◽

Fluorescent Sensor ◽

High Sensitivity ◽

Fast Response ◽

Silicon Quantum Dots ◽

Fast Response Time ◽

Dual Responsive ◽

Doped Silicon

An on–off–on fluorescent sensor based on N-SiQD has the advantages of fast response time and high sensitivity to Hg2+ and GSH.

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Synthesis of Trilaminar Core–Shell Au/α-Fe2O3@SnO2Nanocomposites and their Application for Nonenzymatic Dopamine Electrochemical Sensing

NANO ◽

10.1142/s1793292019501388 ◽

2019 ◽

Vol 14 (11) ◽

pp. 1950138 ◽

Cited By ~ 1

Author(s):

Sai Zhang ◽

Shijun Yue ◽

Jiajia Li ◽

Jianbin Zheng ◽

Guojie Gao

Keyword(s):

Electron Microscopy ◽

High Sensitivity ◽

Electrochemical Sensing ◽

Synthesis Process ◽

Core Shell ◽

X Ray Diffraction ◽

X Ray ◽

Long Term Stability ◽

Transmission Electron

Au nanoparticles anchored on core–shell [Formula: see text]-Fe2O3@SnO2 nanospindles were successfully constructed through hydrothermal synthesis process and used for fabricating a novel nonenzymatic dopamine (DA) sensor. The structure and morphology of the Au/[Formula: see text]-Fe2O3@SnO2 trilaminar nanohybrid film were characterized by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), transmission electron microscopy (TEM) and X-ray diffraction (XRD). The electrochemical properties of the sensor were investigated by cyclic voltammetry and amperometry. The experimental results suggest that the composites have excellent catalytic property toward DA with a wide linear range from 0.5[Formula: see text][Formula: see text]M to 0.47[Formula: see text]mM, a low detection limit of 0.17[Formula: see text][Formula: see text]M (S/[Formula: see text]) and high sensitivity of 397.1[Formula: see text][Formula: see text]A[Formula: see text]mM[Formula: see text][Formula: see text]cm[Formula: see text]. In addition, the sensor exhibits long-term stability, good reproducibility and anti-interference.

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NO2 and NH3 Sensing Characteristics of Inkjet Printing Graphene Gas Sensors

Sensors ◽

10.3390/s19153379 ◽

2019 ◽

Vol 19 (15) ◽

pp. 3379 ◽

Cited By ~ 3

Author(s):

Caterina Travan ◽

Alexander Bergmann

Keyword(s):

Gas Sensors ◽

Inkjet Printing ◽

High Mobility ◽

High Sensitivity ◽

Low Noise ◽

Manufacturing Method ◽

Long Term Stability ◽

Wide Range ◽

Ideal Technique

Graphene is a good candidate for filling the market requirements for cheap, high sensitivity, robust towards contamination, low noise, and low power consumption gas sensors, thanks to its unique properties, i.e., large surface, high mobility, and long-term stability. Inkjet printing is a cheap additive manufacturing method allowing fast, relatively precise and contactless deposition of a wide range of materials; it can be considered therefore the ideal technique for fast deposition of graphene films on thin substrates. In this paper, the sensitivity of graphene-based chemiresistor gas sensors, fabricated through inkjet printing, is investigated using different concentrations of graphene in the inks. Samples have been produced and characterized in terms of response towards humidity, nitrogen dioxide, and ammonia. The presented results highlight the importance of tuning the layer thickness and achieving good film homogeneity in order to maximize the sensitivity of the sensor.

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High-sensitivity, fast-response flexible pressure sensor for electronic skin using direct writing printing

RSC Advances ◽

10.1039/d0ra04431h ◽

2020 ◽

Vol 10 (44) ◽

pp. 26188-26196 ◽

Cited By ~ 2

Author(s):

Xiaojun Chen ◽

Xitong Lin ◽

Deyun Mo ◽

Xiaoqun Xia ◽

Manfeng Gong ◽

...

Keyword(s):

Human Computer Interaction ◽

Pressure Sensor ◽

High Sensitivity ◽

Fast Response ◽

Wearable Electronics ◽

Direct Writing ◽

Electronic Skin ◽

Medical Health ◽

Flexible Pressure Sensor ◽

Health Diagnosis

Bionic electronic skin with human sensory capabilities has attracted extensive research interest, which has been applied in the fields of medical health diagnosis, wearable electronics, human–computer interaction, and bionic prosthetics.

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Electrodeposition of Pd-Pt Nanocomposites on Porous GaN for Electrochemical Nitrite Sensing

Sensors ◽

10.3390/s19030606 ◽

2019 ◽

Vol 19 (3) ◽

pp. 606 ◽

Cited By ~ 7

Author(s):

Rui Xi ◽

Shao-Hui Zhang ◽

Long Zhang ◽

Chao Wang ◽

Lu-Jia Wang ◽

...

Keyword(s):

Environmental Samples ◽

Food Industry ◽

Biological Process ◽

High Sensitivity ◽

Good Reproducibility ◽

Practical Application ◽

Long Term Stability ◽

Nitrite Content

In recent years, nitrite pollution has become a subject of great concern for human lives, involving a number of fields, such as environment, food industry and biological process. However, the effective detection of nitrite is an instant demand as well as an unprecedented challenge. Here, a novel nitrite sensor was fabricated by electrochemical deposition of palladium and platinum (Pd-Pt) nanocomposites on porous gallium nitride (PGaN). The obtained Pd-Pt/PGaN sensor provides abundant electrocatalytic sites, endowing it with excellent performances for nitrite detection. The sensor also shows a low detection limit of 0.95 µM, superior linear ampere response and high sensitivity (150 µA/mM for 1 to 300 µM and 73 µA/mM for 300 to 3000 µM) for nitrite. In addition, the Pd-Pt/PGaN sensor was applied and evaluated in the determination of nitrite from the real environmental samples. The experimental results demonstrate that the sensor has good reproducibility and long-term stability. It provides a practical way for rapidly and effectively monitoring nitrite content in the practical application.

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A comparative study of electrocatalytic oxidation of glucose on conductive Ni-MOF nanosheet arrays with different ligands

New Journal of Chemistry ◽

10.1039/d0nj04150e ◽

2020 ◽

Vol 44 (41) ◽

pp. 17849-17853

Author(s):

Yanxia Qiao ◽

Rui Zhang ◽

Fangyuan He ◽

Wenli Hu ◽

Xiaowei Cao ◽

...

Keyword(s):

Detection Limit ◽

Comparative Study ◽

Response Time ◽

Electrocatalytic Oxidation ◽

Glucose Sensor ◽

High Sensitivity ◽

Fast Response ◽

Serum Samples ◽

Nanosheet Arrays ◽

Oxidation Of Glucose

A glucose sensor based on conductive Ni-MOF nanosheet arrays/CC exhibits a fast response time, a low detection limit, a high sensitivity, and it can also be applied for the detection of glucose in human serum samples.

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