High sensitivity, broad linearity range and low detection limit flexible pressure sensors based on irregular surface microstructure

In the space restricted airtight environment that people lives in, detecting harmful gas by miniature gas chromatography is the practical requirement at present, however, PIDs performance is key factor that restrict the application of miniature gas chromatography, the redesign of the detectors gas route in this paper aiming at improve detectors stability observably, and schemed out miniature PID with high sensitivity, low detection limit and fast response. The result of the experiment shows that the detection limit is 0.04ppm, the sensitivity is 101mv/ppm,the stability is 0.04×10-6/24h,meeting the project requirement. Keywords: photoionization detector; ionization chamber; sensitivity; detection limit;

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Rapid-Response, Low Detection Limit, and High-Sensitivity Capacitive Flexible Tactile Sensor Based on Three-Dimensional Porous Dielectric Layer for Wearable Electronic Skin

ACS Applied Materials & Interfaces ◽

10.1021/acsami.9b16511 ◽

2019 ◽

Vol 11 (43) ◽

pp. 40716-40725 ◽

Cited By ~ 19

Author(s):

Jie Qiu ◽

Xiaohui Guo ◽

Ran Chu ◽

Siliang Wang ◽

Wei Zeng ◽

...

Keyword(s):

Detection Limit ◽

Dielectric Layer ◽

Three Dimensional ◽

High Sensitivity ◽

Tactile Sensor ◽

Rapid Response ◽

Low Detection Limit ◽

Electronic Skin ◽

Wearable Electronic

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Marine Toxins Detection by Biosensors Based on Aptamers

Toxins ◽

10.3390/toxins12010001 ◽

2019 ◽

Vol 12 (1) ◽

pp. 1 ◽

Cited By ~ 3

Author(s):

Wei Ye ◽

Taomei Liu ◽

Weimin Zhang ◽

Muzi Zhu ◽

Zhaoming Liu ◽

...

Keyword(s):

Detection Limit ◽

Sensitivity And Specificity ◽

High Efficiency ◽

Rapid Development ◽

High Sensitivity ◽

Detection Methods ◽

Marine Toxins ◽

Time Saving ◽

Low Detection Limit ◽

The Future

Marine toxins cause great harm to human health through seafood, therefore, it is urgent to exploit new marine toxins detection methods with the merits of high sensitivity and specificity, low detection limit, convenience, and high efficiency. Aptasensors have emerged to replace classical detection methods for marine toxins detection. The rapid development of molecular biological approaches, sequencing technology, material science, electronics and chemical science boost the preparation and application of aptasensors. Taken together, the aptamer-based biosensors would be the best candidate for detection of the marine toxins with the merits of high sensitivity and specificity, convenience, time-saving, relatively low cost, extremely low detection limit, and high throughput, which have reduced the detection limit of marine toxins from nM to fM. This article reviews the detection of marine toxins by aptamer-based biosensors, as well as the selection approach for the systematic evolution of ligands by exponential enrichment (SELEX), the aptamer sequences. Moreover, the newest aptasensors and the future prospective are also discussed, which would provide thereotical basis for the future development of marine toxins detection by aptasensors.

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A highly selective and sensitive fluorescent probe for lactate dehydrogenase based on ultrabright adenosine monophosphate capped gold nanoclusters

RSC Advances ◽

10.1039/c7ra00158d ◽

2017 ◽

Vol 7 (22) ◽

pp. 13438-13443 ◽

Cited By ~ 3

Author(s):

Jiao Liu ◽

Hong-Wei Li ◽

Yuqing Wu

Keyword(s):

Lactate Dehydrogenase ◽

Detection Limit ◽

Fluorescent Probe ◽

Fluorescence Probe ◽

Gold Nanoclusters ◽

High Sensitivity ◽

Adenosine Monophosphate ◽

Low Detection Limit ◽

Sensitivity And Selectivity

The ultrabright AuNCs@AMP are used as fluorescence probe to detect lactate dehydrogenase (LDH) with high sensitivity and selectivity, showing an extremely low detection limit of 0.2 nM (26 pg μL−1, 0.8 U L−1).

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High-Sensitivity Flexible Pressure Sensor-Based 3D CNTs Sponge for Human–Computer Interaction

Polymers ◽

10.3390/polym13203465 ◽

2021 ◽

Vol 13 (20) ◽

pp. 3465

Author(s):

Jianli Cui ◽

Xueli Nan ◽

Guirong Shao ◽

Huixia Sun

Keyword(s):

Pressure Sensor ◽

High Performance ◽

Large Scale ◽

Low Cost ◽

Pressure Sensors ◽

Chemical Vapor ◽

High Sensitivity ◽

Wearable Electronics ◽

Wide Range ◽

Flexible Pressure Sensors

Researchers are showing an increasing interest in high-performance flexible pressure sensors owing to their potential uses in wearable electronics, bionic skin, and human–machine interactions, etc. However, the vast majority of these flexible pressure sensors require extensive nano-architectural design, which both complicates their manufacturing and is time-consuming. Thus, a low-cost technology which can be applied on a large scale is highly desirable for the manufacture of flexible pressure-sensitive materials that have a high sensitivity over a wide range of pressures. This work is based on the use of a three-dimensional elastic porous carbon nanotubes (CNTs) sponge as the conductive layer to fabricate a novel flexible piezoresistive sensor. The synthesis of a CNTs sponge was achieved by chemical vapor deposition, the basic underlying principle governing the sensing behavior of the CNTs sponge-based pressure sensor and was illustrated by employing in situ scanning electron microscopy. The CNTs sponge-based sensor has a quick response time of ~105 ms, a high sensitivity extending across a broad pressure range (less than 10 kPa for 809 kPa−1) and possesses an outstanding permanence over 4,000 cycles. Furthermore, a 16-pixel wireless sensor system was designed and a series of applications have been demonstrated. Its potential applications in the visualizing pressure distribution and an example of human–machine communication were also demonstrated.

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Nanostructured copper selenide as an ultrasensitive and selective non-enzymatic glucose sensor

Materials Advances ◽

10.1039/d0ma00890g ◽

2021 ◽

Author(s):

Siddesh Umapathi ◽

Harish Singh ◽

Jahangir Masud ◽

Manashi Nath

Keyword(s):

Detection Limit ◽

High Efficiency ◽

Glucose Sensor ◽

High Sensitivity ◽

Copper Selenide ◽

Glucose Detection ◽

Applied Potential ◽

Detection Range ◽

Low Detection Limit ◽

Linear Detection

CuSe nanostructures exhibit high-efficiency for glucose detection with high sensitivity (19.419 mA mM−1 cm−2) and selectivity at low applied potential (0.15 V vs. Ag|AgCl), low detection limit (0.196 μM) and linear detection range (100 nM to 40 μM).

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Facile fabrication of highly sensitive and durable cotton fabric-based pressure sensors for motion and pulse monitoring

Journal of Materials Chemistry C ◽

10.1039/d1tc02251b ◽

2021 ◽

Author(s):

Yinan Zhao ◽

Lin Liu ◽

zhen Li ◽

Feifei Wang ◽

Xinxin Chen ◽

...

Keyword(s):

Cotton Fabric ◽

Pressure Sensors ◽

High Sensitivity ◽

Wearable Electronics ◽

Term Stability ◽

Long Term Stability ◽

Highly Sensitive ◽

Facile Fabrication ◽

Flexible Pressure Sensors

Design and development of flexible pressure sensors with high sensitivity, long-term stability and simple fabrication processes is a key procedure to fulfill the applications in wearable electronics, e-skin and medical...

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