A highly sensitive flexible pressure and shear sensor array for measurement of ground reactions in pedestrian navigation

Author(s):  
R. Surapaneni ◽  
K. Park ◽  
M.A. Suster ◽  
D.J. Young ◽  
C. H. Mastrangelo
2020 ◽  
Vol 44 (31) ◽  
pp. 13240-13248
Author(s):  
Xueqian Duan ◽  
Yingze Zhang ◽  
Haoyuan Wang ◽  
Fangna Dai ◽  
Guangwu Yang ◽  
...  

The first phthalocyanine-based sensor array by the combination of two parameters, namely current change direction and sensitivity, for accurate discrimination and wide range of detection of three toxic gases at ppb levels.


2015 ◽  
Vol 36 (2) ◽  
pp. 180-182 ◽  
Author(s):  
Rouzbeh Kazemzadeh ◽  
Kimball Andersen ◽  
Lazarus Motha ◽  
Woo Soo Kim

Sensors ◽  
2015 ◽  
Vol 15 (6) ◽  
pp. 13201-13221 ◽  
Author(s):  
Md. Rajibur Khan ◽  
Shin-Won Kang

2014 ◽  
Vol 205 ◽  
pp. 133-142 ◽  
Author(s):  
Zhengxin Zhao ◽  
Minchul Shin ◽  
Judith M. Gallman ◽  
Robert D. White

2008 ◽  
Vol 93 (11) ◽  
pp. 113111 ◽  
Author(s):  
Sunglyul Maeng ◽  
Seungeon Moon ◽  
Sanghyeob Kim ◽  
Hong-Yeol Lee ◽  
So-Jeong Park ◽  
...  

Micromachines ◽  
2021 ◽  
Vol 12 (8) ◽  
pp. 933
Author(s):  
Daekwang Jung ◽  
Kyumin Kang ◽  
Hyunjin Jung ◽  
Duhwan Seong ◽  
Soojung An ◽  
...  

Although skin-like pressure sensors exhibit high sensitivity with a high performance over a wide area, they have limitations owing to the critical issue of being linear only in a narrow strain range. Various strategies have been proposed to improve the performance of soft pressure sensors, but such a nonlinearity issue still exists and the sensors are only effective within a very narrow strain range. Herein, we fabricated a highly sensitive multi-channel pressure sensor array by using a simple thermal evaporation process of conducting nanomembranes onto a stretchable substrate. A rigid-island structure capable of dissipating accumulated strain energy induced by external mechanical stimuli was adopted for the sensor. The performance of the sensor was precisely controlled by optimizing the thickness of the stretchable substrate and the number of serpentines of an Au membrane. The fabricated sensor exhibited a sensitivity of 0.675 kPa−1 in the broad pressure range of 2.3–50 kPa with linearity (~0.990), and good stability (>300 Cycles). Finally, we successfully demonstrated a mapping of pressure distribution.


2021 ◽  
pp. 2101071
Author(s):  
Wonjeong Suh ◽  
Chaeyong Park ◽  
Joosung Oh ◽  
Sungmin Moon ◽  
Seungmoon Choi ◽  
...  

Sensors ◽  
2019 ◽  
Vol 19 (10) ◽  
pp. 2406 ◽  
Author(s):  
Xinran Tang ◽  
Yihui Miao ◽  
Xinjian Chen ◽  
Baoqing Nie

There is a rapid growing demand for highly sensitive, easy adaptive and low-cost pressure sensing solutions in the fields of health monitoring, wearable electronics and home care. Here, we report a novel flexible inductive pressure sensor array with ultrahigh sensitivity and a simple construction, for large-area contact pressure measurements. In general, the device consists of three layers: a planar spiral inductor layer and ferrite film units attached on a polyethylene terephthalate (PET) membrane, which are separated by an array of elastic pillars. Importantly, by introducing the ferrite film with an excellent magnetic permeability, the effective permeability around the inductor is greatly influenced by the separation distance between the inductor and the ferrite film. As a result, the value of the inductance changes largely as the separation distance varies as an external load applies. Our device has achieved an ultrahigh sensitivity of 1.60 kPa−1 with a resolution of 13.61 Pa in the pressure range of 0–0.18 kPa, which is comparable to the current state-of-the-art flexible pressure sensors. More remarkably, our device shows an outstanding stability when exposed to environmental interferences, e.g., electrical noises from skin surfaces (within 0.08% variations) and a constant pressure load for more than 32 h (within 0.3% variations). In addition, the device exhibits a fast response time of 111 ms and a good repeatability under cyclic pressures varying from 38.45 to 177.82 Pa. To demonstrate its practical usage, we have successfully developed a 4 × 4 inductive pressure sensor array into a wearable keyboard for a smart electronic calendar application.


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