A flexible fingertip tactile sensor

Kim, Duk Sang; Chúc, Nguyễn Hữu; Jin, Sung Min; An, Kuang Jun; Phuc, Vuong Hong; Koo, Jachoon; Lee, Youngkwan; Nam, Jae‐Do; Choi, Hyouk Ryeol

doi:10.1117/12.847399

Cited by 4 publications

(3 citation statements)

References 6 publications

(8 reference statements)

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“…For instance a decrease of the applied voltage leads to simplify the driving electronics design thus reducing its cost. Moreover in several applications such as biomedical devices [7,8], and humanoid robotics [9], the operating voltage is restricted due to intrinsic safety requirements of the devices.…”

Section: Introductionmentioning

confidence: 99%

Tunable electromechanical actuation in silicone dielectric film

Lamberti¹,

Donato²,

Chiappone³

et al. 2014

Smart Mater. Struct.

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Dielectric elastomer actuator films were fabricated on transparent conductive electrode using bicomponent poly(dimethyl)siloxane (PDMS). PDMS is a well-known material in microfluidics and soft lithography for biomedical applications, being easy to process, low cost, biocompatible and transparent. Moreover its mechanical properties can be easily tuned by varying the mixing ratio between the oligomer base and the crosslinking agent. In this work we investigate the chemical composition and the electromechanical properties of PDMS thin film verifying for the first time the tuneable actuation response by simply modifying the amount of the curing agent. We demonstrate that, for a 20:1 ratio of base:crosslinker mixture, a striking 150% enhancement of Maxwell strain occurs at 1 Hz actuating frequency.

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Section: Introductionmentioning

confidence: 99%

Tunable electromechanical actuation in silicone dielectric film

Lamberti¹,

Donato²,

Chiappone³

et al. 2014

Smart Mater. Struct.

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“…The versatility of design and low cost of EAP sensors make them uniquely qualified for a large range of applications. A few such applications for polymer based sensors have been explored in the literature for diagnostics [12], biomedical systems [13], smart textiles [14], and fingertip tactile robotics [15].…”

Section: Introductionmentioning

confidence: 99%

“…cardiovascular systems, using stress-strain information from wearable sensor embedded systems. Kim et al [15] designed a flexible fingertip tactile sensor that allowed a multi-handed robot to sense pressure using capacitive transduction. Many others have also discussed EAP sensor prospects for MEMS technology [2], textiles [14], and pressure transducers [17].…”

Section: Introductionmentioning

confidence: 99%

Systematic approach to development of pressure sensors using dielectric electro-active polymer membranes

York

Dunn

Seelecke

2013

Smart Mater. Struct.

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Dielectric electro-active polymers (DEAPs) have become attractive materials for various actuation and sensing applications due to their high energy and power density, high efficiency, light weight, and fast response speed. However, commercial development has been hindered due to a variety of constraints such as reliability, non-linear behavior, cost of driving electronics, and form factor requirements. This paper presents the systematic development from laboratory concept to commercial readiness of a novel pressure sensing system using a DEAP membrane. The pressure sensing system was designed for in-line pressure measurements for low pressure applications such as health systems monitoring. A first generation sensor was designed, built and tested with a focus on the qualitative capabilities of EAP membranes as sensors. Experimental measurements were conducted that demonstrated the capability of the sensor to output a voltage signal proportional to a changing pressure. Several undesirable characteristics were observed during these initial tests such as strong hysteresis, non-linearity, very limited pressure range, and low fatigue life. A second generation prototype was then designed to remove or compensate for these undesirable characteristics. This prototype was then built and tested. The new design showed an almost complete removal of hysteretic non-linear effects and was capable of operating at 10 × the pressure range of the initial generation. This new design is the framework for a novel DEAP based pressure sensor ready for commercial applications.

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Strain Sensing by Electrical Capacitive Variation: From Stretchable Materials to Electronic Interfaces

Nesser

Lubineau

2021

Adv Elect Materials

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Sensing the motion of objects and humans is essential for various applications, including human‐machine interfaces. Over the past few years, motion sensing has been extensively studied using capacitive strain sensors that can be utilized for wireless communications. The performance and functionality of capacitive strain sensors have been improved by achieving high sensitivity, large‐area sensing, ultra‐stretchability, and simplicity in design, measurement methods, and wireless integration. This review article highlights recent developments in capacitive strain sensors, including their characteristics and applications. First, the mechanisms and techniques employed to enhance the sensitivity of capacitive strain sensors are reviewed. Then, the notable features of this sensing strategy are highlighted, such as its ability to cover a wide area, properties of the required electronic interface, and sensor implementation inside a remote measurement system via an oscillating circuit. Therefore, a global review of the capacitive strain sensor that has been previously attempted can participate in developing an effective sensing method to meet the market need.

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A flexible fingertip tactile sensor

Cited by 4 publications

References 6 publications

Tunable electromechanical actuation in silicone dielectric film

Tunable electromechanical actuation in silicone dielectric film

Systematic approach to development of pressure sensors using dielectric electro-active polymer membranes

Strain Sensing by Electrical Capacitive Variation: From Stretchable Materials to Electronic Interfaces

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