High sensitivity and wide sensing range of stretchable sensors with conductive microsphere array structures

2019 ◽  
Vol 7 (27) ◽  
pp. 8423-8431 ◽  
Author(s):  
Yan Zheng ◽  
Qi Jin ◽  
Wanyi Chen ◽  
Yi Sun ◽  
Zhaoqun Wang
Keyword(s):  
High Sensitivity ◽  
Operating Range ◽  
Binary Structure ◽  
Sensing Range ◽  
Array Structures ◽  
Stretchable Sensors ◽  
Microsphere Array

The bridging effect of the unique binary structure simultaneously increases the sensitivity and operating range of a stretchable sensor.

Flexible M-Tooth Hybrid Micro-Structure Based Capacitive Pressure Sensor with High Sensitivity and Wide Sensing Range

2021 ◽  
pp. 1-1
Author(s):  
Valliammai Palaniappan ◽  
Masoud Panahi ◽  
Dinesh Maddipatla ◽  
Xingzhe Zhang ◽  
Simin Masihi ◽  
...  
Keyword(s):  
Pressure Sensor ◽  
High Sensitivity ◽  
Capacitive Pressure Sensor ◽  
Micro Structure ◽  
Sensing Range

Synthesis of ZrO2: Pr3+, Gd3+ nanocrystals for optical thermometry with thermal sensitivity above 2.32% K-1 over 270 K of sensing range

2021 ◽  
Author(s):  
Minghui Li ◽  
Jun Zhou ◽  
Ruoshan Lei ◽  
Huanping Wang ◽  
Feifei Huang ◽  
...  
Keyword(s):  
Thermal Sensitivity ◽  
High Sensitivity ◽  
Sensing Range ◽  
Optical Thermometry ◽  
Co Doped

Nowadays, there is an enthusiastic effort to develop the luminescent thermometers used for remote and high-sensitivity temperature readout over a wide sensing range. Herein, the Pr3+ and Gd3+ co-doped ZrO2...

Multilayer structured AgNW/WPU-MXene fiber strain sensors with ultrahigh sensitivity and a wide operating range for wearable monitoring and healthcare

2019 ◽  
Vol 7 (26) ◽  
pp. 15913-15923 ◽  
Author(s):  
Jun-Hong Pu ◽  
Xing Zhao ◽  
Xiang-Jun Zha ◽  
Lu Bai ◽  
Kai Ke ◽  
...  
Keyword(s):  
Crack Propagation ◽  
Strain Sensors ◽  
Operating Range ◽  
Highly Sensitive ◽  
Ultrahigh Sensitivity ◽  
Stretchable Sensors ◽  
Wide Operating

Integrating slippage and crack propagation points in a new direction towards highly sensitive and stretchable sensors for wearable healthcare.

scholarly journals Locally Controlled Sensing Properties of Stretchable Pressure Sensors Enabled by Micro-Patterned Piezoresistive Device Architecture

Sensors ◽  
2020 ◽  
Vol 20 (22) ◽  
pp. 6588
Author(s):  
Jun Ho Lee ◽  
Jae Sang Heo ◽  
Keon Woo Lee ◽  
Jae Cheol Shin ◽  
Jeong-Wan Jo ◽  
...  
Keyword(s):  
Pressure Sensor ◽  
Silver Nanowires ◽  
Pressure Sensors ◽  
High Sensitivity ◽  
Fast Response ◽  
Large Area ◽  
Site Specific ◽  
Sensing Properties ◽  
Sensing Range ◽  
Wide Range

For wearable health monitoring systems and soft robotics, stretchable/flexible pressure sensors have continuously drawn attention owing to a wide range of potential applications such as the detection of human physiological and activity signals, and electronic skin (e-skin). Here, we demonstrated a highly stretchable pressure sensor using silver nanowires (AgNWs) and photo-patternable polyurethane acrylate (PUA). In particular, the characteristics of the pressure sensors could be moderately controlled through a micro-patterned hole structure in the PUA spacer and size-designs of the patterned hole area. With the structural-tuning strategies, adequate control of the site-specific sensitivity in the range of 47~83 kPa−1 and in the sensing range from 0.1 to 20 kPa was achieved. Moreover, stacked AgNW/PUA/AgNW (APA) structural designed pressure sensors with mixed hole sizes of 10/200 µm and spacer thickness of 800 µm exhibited high sensitivity (~171.5 kPa−1) in the pressure sensing range of 0~20 kPa, fast response (100~110 ms), and high stretchability (40%). From the results, we envision that the effective structural-tuning strategy capable of controlling the sensing properties of the APA pressure sensor would be employed in a large-area stretchable pressure sensor system, which needs site-specific sensing properties, providing monolithic implementation by simply arranging appropriate micro-patterned hole architectures.

Capacitive touch sensor

2018 ◽  
Vol 35 (3) ◽  
pp. 153-157 ◽  
Author(s):  
Samuel Zuk ◽  
Alena Pietrikova ◽  
Igor Vehec
Keyword(s):  
Response Time ◽  
Integrated Circuit ◽  
High Reliability ◽  
High Sensitivity ◽  
Mechanical Resistance ◽  
Content Type ◽  
Short Response Time ◽  
Sensing Range ◽  
Touch Sensor ◽  
Mechanical Switch

Purpose The purpose of this paper is to analyse the possibilities of mechanical switch replacement by capacitive film touch sensor in applications requiring high reliability and short response time. Advantage of replacing mechanical switch by capacitive touch sensor is no mechanical wear and possible implementation of sensor in application where the switch could not be used or where the flexibility of the sensor substrate is required. The aim of this work is to develop a capacitive touch sensor with the advantage of maximum mechanical resistance, short response time and high sensitivity. Design/methodology/approach Based on various possible sensors layouts, the authors realized 18 different (14 self-capacitance and four mutual capacitance) topologies of capacitive sensor for touch applications. Three different technologies – PCB, LTCC and polymer technology – were used to characterize sensor’s behaviour. For precise characterization of different layouts realized on various substrates, the authors used integrated circuit FDC2214 capacitance-to-digital converter. Findings Sensing range of the capacitive touch (proximity) sensor is affected by the per cent of area covered by the sensor, and it does not depend on topology of sensor. The highest sensing range offers PCB technology. Flexible substrates can be used as proper substituent to rigid PCB. Originality/value The novelty of this work lies in finding the touch capacitive sensors that allow shorter switching times compared to standard mechanical switches.

scholarly journals From a gas thermometer to a terahertz matrix (a review)

2021 ◽  
Vol 9 (4) ◽  
pp. 337-346
Author(s):  
Igor Gibin ◽  
Peter Kotlyar
Keyword(s):  
Physical Properties ◽  
High Sensitivity ◽  
Thz Radiation ◽  
Detection Ability ◽  
Operating Range ◽  
Design Scheme ◽  
Wide Range ◽  
History Of ◽  
Extreme Sensitivity ◽  
Graphene Membranes

The history of the invention and development of the gas thermometer and the ap-pearance of optical-acoustic receivers (OAP) based on it, starting from the first works of Bell, Hayes, Golay, and up to the present time, are considered. The ad-vantages of the OAP, consisting in a constant and high sensitivity in a wide range of the spectrum and the highest detection ability among thermal receivers, are not-ed. The main characteristics of membranes – the main elements of OAP-are con-sidered, and the physical properties of graphene, as the most preferred material for membranes, are analyzed. Estimates have been made showing that the use of SLG graphene membranes makes it possible to create IR and THZ radiation re-ceivers with cells of the order of tens of microns with extremely high sensitivity. A new design scheme is proposed for uncooled matrix helium-graphene optical-acoustic receivers with theoretically extreme sensitivity and speed and an operating range extended to helium temperatures.

Scanning Surface Plasmon Microscope for Sensing Lipid Array and Au Film Defect

2017 ◽  
Vol 870 ◽  
pp. 21-26
Author(s):  
Shih Chung Wei ◽  
Pei Tung Yang ◽  
Frank X. Gu ◽  
Kung Bin Sung ◽  
Chii Wann Lin
Keyword(s):  
Surface Plasmon ◽  
Focal Point ◽  
High Sensitivity ◽  
High Refractive Index ◽  
Refractive Index Sensitivity ◽  
Au Film ◽  
Array Structures ◽  
Polarized Surface ◽  
Index Sensitivity ◽  
Surface Plasmon Microscopy

We demonstrated a scanning radially-polarized surface plasmon microscopy (SSPM) with submicron lateral resolution and high refractive index sensitivity. According to the captured images, SSPM could be used to verify the quality of deposited Au film and Au structure on surface plasmon sensing chip. The defect on the SPR chip, which disturbed the plasmonic wave around the focal point, could be easily detected by our system. Moreover, the application of SSPM in imaging lipid array was showed in this article. The 1, 2-Dioleoyl-sn-glycero-3-phosphocholine (DOPC) array was made by dip-pen nanolithography. The results indicated that SSPM system could be used in comparing the thickness of DOPC array. Because of the high sensitivity and high spatial resolution of the system, we expected the SSPM to be used in measuring the properties of nanogold array structures and apply to digital-array biosensors in nanoscale.

Flexible Ti3C2Tx MXene/ink human wearable strain sensors with high sensitivity and a wide sensing range

2020 ◽  
Vol 315 ◽  
pp. 112304
Author(s):  
Ziang Ma ◽  
Keming Ma ◽  
Shaowei Lu ◽  
Sai Wang ◽  
Xingmin Liu ◽  
...  
Keyword(s):  
High Sensitivity ◽  
Strain Sensors ◽  
Sensing Range

Nano-toughening of transparent wearable sensors with high sensitivity and a wide linear sensing range

2020 ◽  
Vol 8 (39) ◽  
pp. 20531-20542
Author(s):  
Shuhua Peng ◽  
Shuying Wu ◽  
Yuyan Yu ◽  
Philippe Blanloeuil ◽  
Chun H. Wang
Keyword(s):  
Wearable Sensors ◽  
Strain Sensor ◽  
High Sensitivity ◽  
Optical Transparency ◽  
Conductive Films ◽  
Sensing Range ◽  
Highly Sensitive

A new highly sensitive and stretchable strain sensor with excellent linearity and optical transparency has been developed by toughening of microcracks within the thin conductive films.

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