scholarly journals MWCNT/perylene bisimide water dispersions for miniaturized temperature sensors

RSC Advances ◽  
2015 ◽  
Vol 5 (80) ◽  
pp. 65023-65029 ◽  
Author(s):  
Tarita Biver ◽  
Francesco Criscitiello ◽  
Fabio Di Francesco ◽  
Matteo Minichino ◽  
Timothy Swager ◽  
...  

We report on a new ionic surfactant based on perylene bisimide suitable for the exfoliation of MWCNTs. The system has utility for the formation of sensitive sensors to measure body temperature.

Polymers ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 1549
Author(s):  
Qian Yang ◽  
Xi Wang ◽  
Xin Ding ◽  
Qiao Li

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.


Electronics ◽  
2020 ◽  
Vol 9 (10) ◽  
pp. 1658
Author(s):  
Sandra Costanzo ◽  
Alexandra Flores

An integrated sensors platform for non-contact temperature monitoring is proposed in this work. The adopted solution, based on the combined integration of an infrared thermometer and a capacitive humidity sensor, is able to provide a fast and accurate tool for remotely sensing both ambient and body temperature in the framework of pandemic situations, such as COVID-19, thus avoiding any direct contact with people. The information relative to the ambient temperature is successfully exploited to derive a correction formula for the accurate extraction of body temperature from the measurement provided by the standard infrared sensor. Full details on the design of the proposed platform are provided in the work, by reporting relevant simulation results on the variations of ambient temperature, relative humidity, and body temperature. Experimental validations are also discussed to provide a full assessment of the proposed approach.


2020 ◽  
Vol 15 (1) ◽  
Author(s):  
Yi Su ◽  
Chunsheng Ma ◽  
Jing Chen ◽  
Huiping Wu ◽  
Weixiang Luo ◽  
...  

Abstract In recent years, the development and research of flexible sensors have gradually deepened, and the performance of wearable, flexible devices for monitoring body temperature has also improved. For the human body, body temperature changes reflect much information about human health, and abnormal body temperature changes usually indicate poor health. Although body temperature is independent of the environment, the body surface temperature is easily affected by the surrounding environment, bringing challenges to body temperature monitoring equipment. To achieve real-time and sensitive detection of various parts temperature of the human body, researchers have developed many different types of high-sensitivity flexible temperature sensors, perfecting the function of electronic skin, and also proposed many practical applications. This article reviews the current research status of highly sensitive patterned flexible temperature sensors used to monitor body temperature changes. First, commonly used substrates and active materials for flexible temperature sensors have been summarized. Second, patterned fabricating methods and processes of flexible temperature sensors are introduced. Then, flexible temperature sensing performance are comprehensively discussed, including temperature measurement range, sensitivity, response time, temperature resolution. Finally, the application of flexible temperature sensors based on highly delicate patterning are demonstrated, and the future challenges of flexible temperature sensors have prospected.


Author(s):  
Yuyan Yu ◽  
Shuhua Peng ◽  
Zhao Sha ◽  
Xingying Cheng ◽  
Shuying Wu ◽  
...  

Wearable temperature sensors meeting the resolution of medical-grade thermometers are needed to continuously monitor skin temperature variations indicative of diseases and sports performance. Herein, we present a new technique for...


2021 ◽  
Author(s):  
Jeng-Hun Lee ◽  
Haomin Chen ◽  
Eunyoung Kim ◽  
Heng Zhang ◽  
Ke Wu ◽  
...  

Continuous real-time measurement of body temperature using a wearable sensor is an essential part of human health monitoring. Electrospun aligned carbon nanofiber (ACNF) films are employed to assemble flexible temperature...


Author(s):  
M. L. Zimny ◽  
A. C. Haller

During hibernation the ground squirrel is immobile, body temperature reduced and metabolism depressed. Hibernation has been shown to affect dental tissues varying degrees, although not much work has been done in this area. In limited studies, it has been shown that hibernation results in (1) mobilization of bone minerals; (2) deficient dentinogenesis and degeneration of alveolar bone; (3) presence of calculus and tears in the cementum; and (4) aggrevation of caries and pulpal and apical tooth abscesses. The purpose of this investigation was to study the effects of hibernation on dental tissues employing scanning electron microscopy (SEM) and related x-ray analyses.


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