Achieving Super Sensitivity in Capacitive Strain Sensing by Electrode Fragmentation

2021 ◽  
Author(s):  
Hussein Nesser ◽  
Gilles Lubineau
Keyword(s):  
Strain Sensing ◽  
Capacitive Strain

Design and characterization of a single channel two-liquid capacitor and its application to hyperelastic strain sensing

Lab on a Chip ◽  
2015 ◽  
Vol 15 (5) ◽  
pp. 1376-1384 ◽  
Author(s):  
Shanliangzi Liu ◽  
Xiaoda Sun ◽  
Owen J. Hildreth ◽  
Konrad Rykaczewski
Keyword(s):  
Dielectric Constant ◽  
Liquid Metal ◽  
High Dielectric Constant ◽  
Single Channel ◽  
Strain Sensor ◽  
Strain Sensing ◽  
Metal Electrodes ◽  
Capacitive Strain ◽  
High Dielectric

We show that single channel capacitive strain sensor consisting of a high dielectric constant liquid sandwiched in-between two liquid metal electrodes can have 25 times higher capacitance per sensor's base area when compared to current two-channel liquid metal stain sensors.

A high-performance MEMS capacitive strain sensing system

2007 ◽  
Vol 133 (2) ◽  
pp. 272-277 ◽  
Author(s):  
Wen H. Ko ◽  
Darrin J. Young ◽  
Jun Guo ◽  
Michael Suster ◽  
Hung-I Kuo ◽  
...  
Keyword(s):  
High Performance ◽  
Strain Sensing ◽  
Sensing System ◽  
Capacitive Strain

A High-Performance MEMS Capacitive Strain Sensing System

2006 ◽  
Vol 15 (5) ◽  
pp. 1069-1077 ◽  
Author(s):  
M. Suster ◽  
J. Guo ◽  
N. Chaimanonart ◽  
W.H. Ko ◽  
D.J. Young
Keyword(s):  
High Performance ◽  
Strain Sensing ◽  
Sensing System ◽  
Capacitive Strain

scholarly journals Dynamic Nanohybrid-Polysaccharide Hydrogels for Soft Wearable Strain Sensing

Sensors ◽  
2021 ◽  
Vol 21 (11) ◽  
pp. 3574
Author(s):  
Pejman Heidarian ◽  
Hossein Yousefi ◽  
Akif Kaynak ◽  
Mariana Paulino ◽  
Saleh Gharaie ◽  
...  
Keyword(s):  
Mechanical Strength ◽  
Strain Sensors ◽  
Self Healing ◽  
Nano Materials ◽  
Strain Sensing ◽  
Ferric Ions ◽  
Research Activity ◽  
Adhesion Properties ◽  
High Mechanical Strength ◽  
The Moment

Electroconductive hydrogels with stimuli-free self-healing and self-recovery (SELF) properties and high mechanical strength for wearable strain sensors is an area of intensive research activity at the moment. Most electroconductive hydrogels, however, consist of static bonds for mechanical strength and dynamic bonds for SELF performance, presenting a challenge to improve both properties into one single hydrogel. An alternative strategy to successfully incorporate both properties into one system is via the use of stiff or rigid, yet dynamic nano-materials. In this work, a nano-hybrid modifier derived from nano-chitin coated with ferric ions and tannic acid (TA/Fe@ChNFs) is blended into a starch/polyvinyl alcohol/polyacrylic acid (St/PVA/PAA) hydrogel. It is hypothesized that the TA/Fe@ChNFs nanohybrid imparts both mechanical strength and stimuli-free SELF properties to the hydrogel via dynamic catecholato-metal coordination bonds. Additionally, the catechol groups of TA provide mussel-inspired adhesion properties to the hydrogel. Due to its electroconductivity, toughness, stimuli-free SELF properties, and self-adhesiveness, a prototype soft wearable strain sensor is created using this hydrogel and subsequently tested.

scholarly journals Strain Sensor via Wood Anomalies in 2D Dielectric Array

Nanomaterials ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 1022
Author(s):  
Rashid G. Bikbaev ◽  
Ivan V. Timofeev ◽  
Vasiliy F. Shabanov
Keyword(s):  
Higher Plants ◽  
Numerical Study ◽  
Reciprocal Lattice ◽  
Strain Sensing ◽  
Photonic Materials ◽  
Sensing Applications ◽  
Wide Range ◽  
Sensor Structure ◽  
Optical Behavior ◽  
Chlorophyll Absorption

Optical sensing is one of many promising applications for all-dielectric photonic materials. Herein, we present an analytical and numerical study on the strain-responsive spectral properties of a bioinspired sensor. The sensor structure contains a two-dimensional periodic array of dielectric nanodisks to mimic the optical behavior of grana lamellae inside chloroplasts. To accumulate a noticeable response, we exploit the collective optical mode in grana ensemble. In higher plants, such a mode appears as Wood’s anomaly near the chlorophyll absorption line to control the photosynthesis rate. The resonance is shown persistent against moderate biological disorder and deformation. Under the stretching or compression of a symmetric structure, the mode splits into a couple of polarized modes. The frequency difference is accurately detected. It depends on the stretch coefficient almost linearly providing easy calibration of the strain-sensing device. The sensitivity of the considered structure remains at 5 nm/% in a wide range of strain. The influence of the stretching coefficient on the length of the reciprocal lattice vectors, as well as on the angle between them, is taken into account. This adaptive phenomenon is suggested for sensing applications in biomimetic optical nanomaterials.

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