A flexible three-axial capacitive tactile sensor with multilayered dielectric for artificial skin applications

Zhang, Shuai; Yuan, Haitao; Kan, Wenqing; Guo, Xiaohui; Liu, Caixia; Liu, Ping

doi:10.1007/s00542-016-2936-x

Cited by 51 publications

(33 citation statements)

References 21 publications

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“…In recent years, many high-sensitivity capacitive sensors have been reported. Huang [ 39 ] designed a new three-axis force sensor consisting of four capacitors based on the change in capacitance caused by triaxial forces. A large number of measurement data showed that the sensitivities of the sensor unit to normal force, x-axis, and y-axis shear force are 0.0095, 0.0053, and 0.0060 N −1 , respectively, which proved that it has great application potential in the field of skin sensing.…”

Section: Flexible Pressure Sensorsmentioning

confidence: 99%

Recent Developments for Flexible Pressure Sensors: A Review

et al. 2018

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Flexible pressure sensors are attracting great interest from researchers and are widely applied in various new electronic equipment because of their distinct characteristics with high flexibility, high sensitivity, and light weight; examples include electronic skin (E-skin) and wearable flexible sensing devices. This review summarizes the research progress of flexible pressure sensors, including three kinds of transduction mechanisms and their respective research developments, and applications in the fields of E-skin and wearable devices. Furthermore, the challenges and development trends of E-skin and wearable flexible sensors are also briefly discussed. Challenges of developing high extensibility, high sensitivity, and flexible multi-function equipment still exist at present. Exploring new sensing mechanisms, seeking new functional materials, and developing novel integration technology of flexible devices will be the key directions in the sensors field in future.

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Section: Flexible Pressure Sensorsmentioning

confidence: 99%

Recent Developments for Flexible Pressure Sensors: A Review

et al. 2018

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“…Recently, some groups have studied sensors, which mimic tactile receptors. For example, capacitive [3], piezoelectric [4], [5], piezoresistive [6], and pyroelectric [7] types of sensors have been studied for their ability to detect pressure levels and temperatures. Such sensors can be applied as functions of mechanoreceptors and thermoreceptors [8].…”

Section: Introductionmentioning

confidence: 99%

Artificial Tactile Sensor Structure for Surface Topography Through Sliding

Shin

Sim

Choi

et al. 2018

IEEE/ASME Trans. Mechatron.

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Tactile sensors mimicking the human sense of touch have been studied and various technologies for the sensing of external stimuli have been suggested as well. Humans detect certain external stimuli and become aware of related sensations, such as roughness or smoothness. Among the various physical parameters, surface information is the most informative type of perception to impart these sensations onto an electromechanical system, such as an android robot or a smart phone. Here, an array sensor, which uses a sliding method for the precise perception of surface information, such as shapes and structures, is demonstrated. The suggested array sensor design with the excellent dynamic response of a piezoelectric material results in enhanced spatial resolutions with sliding motions and detects variable sliding speeds. A soft material was employed to the sensor to enhance the capability of shape distinction. Color mapping was applied to translate surface patterns into visual images. The reconfigured surface information had high accuracy compared to actual information. The demonstrated sliding speed, pattern detection, and shape detection capabilities as well as the higher spatial resolutions allow the sensor to be utilized as an artificial tactile sensor.

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“…Indeed, they allow wearable devices to be developed and find numerous applications such as plantar pressure monitoring [2] or bandage compression control in the therapy of chronic venous disorders [3]. Among the existing pressure sensing technologies, polymer-based capacitive sensors are very popular since they allow a large variety of sensor to be designed (including 3D sensors), they are rather robust to temperatures changes, and they can be driven by low power electronics [4]. The basic principle of such sensors is to sense the deformation of the used polymer under stress, by means of the capacitance changes read out between electrodes integrated within the polymer, that moves relatively to one another when a load is applied.…”

Section: Introductionmentioning

confidence: 99%

Porous Polymer Based Flexible Pressure Sensors for Medical Applications

et al. 2018

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This paper focuses on the use of microporous PDMS foams as a highly deformable film to improve the sensitivity of flexible capacitive pressure sensor dedicated to wearable use. A fabrication process allowing the mechanical properties of foams to be adjusted is proposed together with a non-linear behavioral model used to objectively estimate the sensor performances in terms of sensitivity and measurement range. Sensors fabricated and characterized in this study show that the sensitivity and the measurement range can be adjusted from 0.14%/kPa up to 13.07%/kPa, and from 594 kPa to 183 kPa, respectively, while the PDMS film porosity ranges from 0% up to 85%.

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A flexible three-axial capacitive tactile sensor with multilayered dielectric for artificial skin applications

Cited by 51 publications

References 21 publications

Recent Developments for Flexible Pressure Sensors: A Review

Recent Developments for Flexible Pressure Sensors: A Review

Artificial Tactile Sensor Structure for Surface Topography Through Sliding

Porous Polymer Based Flexible Pressure Sensors for Medical Applications

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