Flexible touch- and pressure sensitive eiezo elastomer stretch sensor for simple surface position detection

Schwödiauer, Reinhard; Ortwein, C.; Buchberger, Gerda; Graz, Ingrid; Bartu, Petr; Bauer, Siegfried

doi:10.1109/ise.2008.4814064

Cited by 6 publications

(10 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Yüksek elektrik alanlarında polimer çözelti-sinden lif çekerek elde edilen PVDF nanolifleri, sadece piezoelektrik özellikler değil aynı zamanda ferroelektrik özellikler de sunmaktadır [77]. Ferroelektrik çipler, iletken matris içerisine yerleştirildiklerinde piezoelektrik hale gelebilirler, bu da basit yüzey pozisyon algılamasını mümkün kılar [78]. Hücresel polipropilen ferroelektrikler, dokunmatik sensörler olarak kullanılabilmektedir [79].…”

Section: Piezoelektrik Elementler Ve Kaplamalarunclassified

Elektronik Tekstillere Yönelik Akıllı Kumaş Sensörleri

Erol¹,

Çetiner²

2017

J Text Eng

View full text Add to dashboard Cite

Son yıllarda küresel piyasada tekstil ve giyim sanayi, geleneksel tekstil ürünlerinden, bilgiyi adapte eden ve dolayısıyla yeni ve katma değeri yüksek akıllı tekstillere doğru kaymaya başlamıştır. Bu durum tekstil mühendisliğinin, kimya, elektronik ve malzeme bilimi gibi diğer bilimlerle, multidisipliner bir çalışma alanını oluşturmuştur. Sensörler, akıllı tekstiller alanının önemli bir bölümünü oluşturmaktadır ve geleneksel tekstillere fark yaratacak gelişmeleri içermektedir. Bu makalede akıllı kumaş sensör çeşitleri ve literatürdeki uygulamaları ele alınmıştır.

show abstract

Section: Piezoelektrik Elementler Ve Kaplamalarunclassified

Elektronik Tekstillere Yönelik Akıllı Kumaş Sensörleri

Erol¹,

Çetiner²

2017

J Text Eng

View full text Add to dashboard Cite

show abstract

“…There are various physical and electrical mechanisms that were reported in the fabrication of tactile sensor technology [10][11][12]. Piezoresistive, piezoelectric, and capacitive sensing is the most common electronic mechanisms used to develop tactile/pressure-sensing devices [13][14][15][16][17]. The early pressure mapping sensors were fabricated on rigid (nonflexible) substrates which are limited to the planar end-effector geometry and certain pressure/force.…”

Section: List Of Figuresmentioning

confidence: 99%

“…The limitations with commercially available piezoresistive sensors are drift, hysteresis, high nonlinearity, and temperature stability, which require frequent calibration and the life cycle of the sensor is limited by operation and frequency of usage. To overcome the limitations and drawbacks of the piezoresistive sensors, capacitive sensing modality has been introduced [7][8][9][10][11][12][13][14][15][16][17][18][19][20]. The mechanism of the capacitive sensor is the measure of change in capacitance (ΔC) as the change in distance (d) between two parallel plates (electrodes) with respect to applied pressure/force.…”

Section: List Of Figuresmentioning

confidence: 99%

“…XSensors ® developed a capacitive pressure measurement using conductive fabric and foam dielectric material [6]. Muhammad et al incorporated a capacitive sensor in a CMOS using silicon substrates which are not conformable and limited by end-effector geometry [13,14]. Pritchard et al fabricated flexible pressure on polyimide film with Parylene -C as active sensing element which operates in low pressure regime [11].…”

Section: List Of Figuresmentioning

confidence: 99%

“…From the thermomechanical analysis, it is significant to understand the ΔC is attributed to both the elastic modulus and thermal stress of the active sensor material (Arathane elastomer). From the analysis of the baseline architecture's response, the ΔC is better than a reported sensor which was applied the same principle which has ΔC in femto-Farad (10 -15 Farad) region [9][10][11][12][13]. The dielectric permittivity of the Arathane elastomer is higher and the elastic modulus of Arathane is also higher which is responsible for the better sensitivity and increased capacitance.…”

Section: Figure 12 (B): Dielectric Permittivity and Loss Tangent (Tanmentioning

confidence: 99%

See 2 more Smart Citations

Flexible Polymer-Ceramic Composite Materials for High Sensitive Pressure Sensing Applications in Harsh Environments

Idhaiam¹,

Sivaneri²

View full text Add to dashboard Cite

Robotics aligned with completing physical activities in the space environments will require a new suit of solid-state sensors that are versatile and robust, and will provide precise information about contact events with various space assets. One of the vital sensing mechanisms is the "feelof-touch" or "tactile/haptic" feedback to the robotic system. Current robotics tactile/force sensor use mechanical switches for the feedback to determine whether the end-effector is in contact, which does not provide sufficient information regarding the local force and point-of-contact for the robotic end-effector. To tackle these challenges, the current work focusses on the development of flexible tactile sensor arrays that conform to the geometry of the end-effector and provide information about contact location, force magnitude, and force type. The sensor arrays were also composed of robust materials sufficient for the desired space application; the sensor system was designed to withstand the harsh environment, temperature fluctuations, and desired sensitivity. In this research, tactile sensor arrays were fabricated and tested, which were flexible, thick film, capacitive sensors that are composed of a 2:2 laminar polymer-ceramic composite. The composite was composed of four distinct layers, which consist of a polyimide support (Kapton film), patterned Pt electrodes, a compliant elastomer layer, and a ceramic dielectric layer (HfO2). Three different capacitive sensor architectures were developed to study the influence of the dielectric HfO2 layer on the sensitivity of the sensor. The baseline architecture was composed the compliant elastomer layer (Arathane 5753 A/B) sandwiched between the Pt electrodes. A bi-layer architecture was also fabricated with an additional HfO2 thin film deposited onto the elastomer in order to magnify the capacitive response of the sensor structure. In a tri-layer architecture, the HfO2 layer was sandwiched between elastomer layers to understand the influence of the additional elastomer layer on the sensitivity and pressure distribution across the sensor structure. These materials were tested over a wide temperature range from-60 to 120 o C. The fabricated sensor showed good sensitivity and cycle stability between 0 and 360 kPa. The influence of temperature variations on the capacitive and mechanical properties of the composites was also studied in detail. Thermomechanical loading cycles were performed with an in situ electrical acquisition to characterize the sensor. Chemical and structural characterization of the HfO2 layer deposited on the flexible substrate was evaluated by a combination of conductive atomic force microscopy (c-AFM), raman spectroscopy, and x-ray photoelectron spectroscopy (XPS), and the optical properties were analyzed by ultraviolet visible spectrophotometer (UV-Vis). Embedding strategies were proposed and developed to shield the sensors against the direct exposure to cosmic rays, atomic oxygen, ultraviolet rays, and damages caused by direct contact with other objects in space...

show abstract