Production and characterization of Sr2AlZrO5,5 ceramics to encapsulate temperature sensors in the petroleum extraction industry

2017 ◽  
Author(s):  
Andréa Sousa ◽  
Manuella Batista Padilha ◽  
Ricardo Artur Sanguinetti Ferreira ◽  
Yogendra Prasad Yadava ◽  
Renata Domingues ◽  
...  
Keyword(s):  
Temperature Sensors ◽  
Petroleum Extraction

Characterization of Ba0.55Sr0.45TiO3films as light and temperature sensors and its implementation on automatic drying system model

2016 ◽  
Vol 168 (1) ◽  
pp. 130-150 ◽  
Author(s):  
Irzaman ◽  
Ridwan Siskandar ◽  
Aminullah ◽  
Irmansyah ◽  
Husin Alatas
Keyword(s):  
Temperature Sensors ◽  
System Model ◽  
Drying System

PLA conductive filament for 3D printed smart sensing applications

2018 ◽  
Vol 24 (4) ◽  
pp. 739-743 ◽  
Author(s):  
Simone Luigi Marasso ◽  
Matteo Cocuzza ◽  
Valentina Bertana ◽  
Francesco Perrucci ◽  
Alessio Tommasi ◽  
...  
Keyword(s):  
Temperature Sensor ◽  
Low Cost ◽  
Conductive Polymer ◽  
Temperature Characteristic ◽  
Temperature Sensors ◽  
Electrical Performance ◽  
Content Type ◽  
Sensing Applications ◽  
3D Printed

Purpose This paper aims to present a study on a commercial conductive polylactic acid (PLA) filament and its potential application in a three-dimensional (3D) printed smart cap embedding a resistive temperature sensor made of this material. The final aim of this study is to add a fundamental block to the electrical characterization of printed conductive polymers, which are promising to mimic the electrical performance of metals and semiconductors. The studied PLA filament demonstrates not only to be suitable for a simple 3D printed concept but also to show peculiar characteristics that can be exploited to fabricate freeform low-cost temperature sensors. Design/methodology/approach The first part is focused on the conductive properties of the PLA filament and its temperature dependency. After obtaining a resistance temperature characteristic of this material, the same was used to fabricate a part of a 3D printed smart cap. Findings An approach to the characterization of the 3D printed conductive polymer has been presented. The major results are related to the definition of resistance vs temperature characteristic of the material. This model was then exploited to design a temperature sensor embedded in a 3D printed smart cap. Practical implications This study demonstrates that commercial conductive PLA filaments can be suitable materials for 3D printed low-cost temperature sensors or constitutive parts of a 3D printed smart object. Originality/value The paper clearly demonstrates that a new generation of 3D printed smart objects can already be obtained using low-cost commercial materials.

scholarly journals Fabrication and Characterization of Wrapped Metal Yarns-based Fabric Temperature Sensors

Polymers ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 1549
Author(s):  
Qian Yang ◽  
Xi Wang ◽  
Xin Ding ◽  
Qiao Li
Keyword(s):  
Mechanical Properties ◽  
Body Temperature ◽  
Heat Source ◽  
Human Body ◽  
Temperature Sensors ◽  
Temperature Sensitive ◽  
Maximum Strain ◽  
Human Body Temperature ◽  
Fabrication And Characterization

Textile temperature sensors are highly in demanded keep a real-time and accurate track of human body temperature for identification of healthy conditions or clinical diagnosis. Among various materials for textile temperature sensors, temperature-sensitive metal fibers have highest precision. However, those metal fibers are mechanically too weak, and break constantly during the weaving process. To enhance the mechanical strength of the metal fibers, this paper proposes to make wrapped metal fibers using wrapping technology, and characterize the effect of wrapped metal yarns on both mechanical properties and sensing behaviors. The wrapped yarns were woven into fabrics, forming the fabric temperature sensors. Results show that strength and maximum strain of the wrapped yarns are 2.69 and 1.82 times of pure Pt fibers. The response time of fabric temperature sensors using wrapped yarns was observed as 0.78 s and 1.1 s longer compared to that using Pt fibers when front and back sides contacted heat source, respectively. It is recommended that the wrapping method should be implemented for the protection of Pt fibers in fabric temperature sensors.

scholarly journals Carbon Dots as Sensing Layer for Printed Humidity and Temperature Sensors

Nanomaterials ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 2446
Author(s):  
Almudena Rivadeneyra ◽  
José F. Salmeron ◽  
Fabio Murru ◽  
Alejandro Lapresta-Fernández ◽  
Noel Rodríguez ◽  
...  
Keyword(s):  
Relative Humidity ◽  
Internet Of Things ◽  
Polyethylene Terephthalate ◽  
Carbon Dots ◽  
Temperature Sensors ◽  
Capacitive Sensors ◽  
Exciting Frequency ◽  
Sensor Structure ◽  
Pet Film

This work presents an innovative application of carbon dots (Cdots) nanoparticles as sensing layer for relative humidity detection. The developed sensor is based on interdigitated capacitive electrodes screen printed on a flexible transparent polyethylene terephthalate (PET) film. Cdots are deposited on top of these electrodes. An exhaustive characterization of the nanoparticles has been conducted along with the fabrication of the sensor structure. The accompanied experiments give all the sensibility to the Cdots, showing its dependence with temperature and exciting frequency. To the best of our knowledge, this work paves the path to the use of these kind of nanoparticles in printed flexible capacitive sensors aimed to be employed in the continuously expanding Internet of Things ecosystem.

Synthesis and characterization of flexible thermographic phosphor temperature sensors

2016 ◽  
Vol 60 ◽  
pp. 50-56 ◽  
Author(s):  
Katherine E. Mitchell ◽  
Victor Gardner ◽  
Stephen W. Allison ◽  
Firouzeh Sabri
Keyword(s):  
Temperature Sensors ◽  
Synthesis And Characterization ◽  
Thermographic Phosphor

Characterization of measurement artefacts in fluoroptic temperature sensors: Implications for laser thermal therapy at 810 nm

2005 ◽  
Vol 36 (4) ◽  
pp. 297-306 ◽  
Author(s):  
Sean R.H. Davidson ◽  
I. Alex Vitkin ◽  
Michael D. Sherar ◽  
William M. Whelan
Keyword(s):  
Temperature Sensors ◽  
Thermal Therapy ◽  
Laser Thermal Therapy

scholarly journals Flexible Temperature Sensor Integrated with Soft Pneumatic Microactuators for Functional Microfingers

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Satoshi Konishi ◽  
Akiya Hirata
Keyword(s):  
Thin Film ◽  
Temperature Sensor ◽  
Output Voltage ◽  
Temperature Sensors ◽  
Seebeck Effect ◽  
Temperature Sensing ◽  
Bending Test ◽  
Contact Detection ◽  
Dissimilar Metals

Abstract The integration of a flexible temperature sensor with a soft microactuator (a pneumatic balloon actuator) for a functional microfinger is presented herein. A sensor integrated with a microactuator can actively approach a target for contact detection when a distance exists from the target or when the target moves. This paper presents a microfinger with temperature sensing functionality. Moreover, thermocouples, which detect temperature based on the Seebeck effect, are designed for use as flexible temperature sensors. Thermocouples are formed by a pair of dissimilar metals or alloys, such as copper and constantan. Thin-film metals or alloys are patterned and integrated in the microfinger. Two typical thermocouples (K-type and T-type) are designed in this study. A 2.0 mm × 2.0 mm sensing area is designed on the microfinger (3.0 mm × 12 mm × 400 μm). Characterization indicates that the output voltage of the sensor is proportional to temperature, as designed. It is important to guarantee the performance of the sensor against actuation effects. Therefore, in addition to the fundamental characterization of the temperature sensors, the effect of bending deformation on the characteristics of the temperature sensors is examined with a repeated bending test consisting of 1000 cycles.

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