Investigation and development of vertically aligned carbon nanotube (VACNT) forest based temperature sensor

Rana, Masud; Asyraf, M.R. Mohd

doi:10.1016/j.mee.2016.05.007

Cited by 8 publications

(7 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The measurement of resistance changes upon three repetitive cycles of heating and cooling was performed with a variation of temperature by 5 °C in Figure S10. It clearly shows a reproducibility of our sensor with a relatively small hysteresis compared to those in the previously reported ones. , Encapsulation was used to isolate the temperature-sensing component and water from the outer environment. The results of effects on encapsulation can be seen in Figures S11 and S12.…”

Section: Resultssupporting

confidence: 52%

See 1 more Smart Citation

Fabrication of High-Sensitivity Skin-Attachable Temperature Sensors with Bioinspired Microstructured Adhesive

Hong

Park

et al. 2018

ACS Appl. Mater. Interfaces

175

126

View full text Add to dashboard Cite

In this study, we demonstrate the fabrication of a highly sensitive flexible temperature sensor with a bioinspired octopus-mimicking adhesive. A resistor-type temperature sensor consisting of a composite of poly(N-isopropylacrylamide) (pNIPAM)-temperature sensitive hydrogel, poly(3,4-ethylenedioxythiophene) polystyrene sulfonate, and carbon nanotubes exhibits a very high thermal sensitivity of 2.6%·°C between 25 and 40 °C so that the change in skin temperature of 0.5 °C can be accurately detected. At the same time, the polydimethylsiloxane adhesive layer of octopus-mimicking rim structure coated with pNIPAM is fabricated through the formation of a single mold by utilizing undercut phenomenon in photolithography. The fabricated sensor shows stable and reproducible detection of skin temperature under repeated attachment/detachment cycles onto skin without any skin irritation for a long time. This work suggests a high potential application of our skin-attachable temperature sensor to wearable devices for medical and health-care monitoring.

show abstract

Section: Resultssupporting

confidence: 52%

“…It clearly shows a reproducibility of our sensor with a relatively small hysteresis compared to those in the previously reported ones. 35,36 Encapsulation was used to isolate the temperature-sensing component and water from the outer environment. The results of effects on encapsulation can be seen in Figures S11 and S12.…”

Section: Resultsmentioning

confidence: 99%

Fabrication of High-Sensitivity Skin-Attachable Temperature Sensors with Bioinspired Microstructured Adhesive

Hong

Park

et al. 2018

ACS Appl. Mater. Interfaces

175

126

View full text Add to dashboard Cite

show abstract

“…A variety of temperature-sensitive materials have been studied for advancement of temperature sensors. Some examples include polyaniline nanofibers, carbon nanotubes (CNTs), , reduced graphene oxide (rGO), poly(3,4-ethylenedioxythiophene):polystyrene (PEDOT:PSS),metal thermoresistive materials with geometric engineering such as Cu nanowire mesh, Ag NC, and graphene nanowalls, which are reported for wearable sensing pursose. − The skin temperature is different from the core temperature and is affected by the environment. Hence, to measure the true core body temperature in a non-invasive way, a temperature sensor was designed to wear in the ear (Figure b).…”

Section: Sensor Materialsmentioning

confidence: 99%

Wearable Sensing Devices for Point of Care Diagnostics

Mondal

Zehra

Choudhury

et al. 2020

ACS Appl. Bio Mater.

View full text Add to dashboard Cite

The growth of smart wearable sensing systems has gained immense importance in the present mode of data acquisition and signaling in pharmaceutical, healthcare, and wellness industries. Presently, application of smart wearables is gaining prominence in several fitness activities, therapeutics, and diagnostic areas. Smart wearable biosensors offer real-time monitoring of physiological metrics and biomarkers that are specific to certain diseases in ambulant condition. This review offers a broad overview of the state-of-the-art progress on smart wearable biosensors focusing on applications in point of care diagnostics. A careful comparison of presently available commercial devices, implementation in clinical trials, and validation also have been highlighted in the present review. This work concludes with challenges and future prospects for scientists and engineers working in the nascent interdisciplinary field.

show abstract

“…Presently, due to their very interesting temperaturedependent resistivity, the CNT fibers have been advanced further to explore the potential of temperature sensors [27,28]. As previously reported, variable range hopping (VRH) mechanism has been applied to explained the conduction behavior of CNT fibers at room temperature (RT) or low temperature (below ∼250 °C) in several studies [26,[29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Temperature-dependent resistance of carbon nanotube fibers

Song¹,

Di²,

Jia³

et al. 2022

Nanotechnology

View full text Add to dashboard Cite

Carbon nanotube fibers are highly recommended in the field of temperature sensor application owing to their excellent electrical conductivity and thermal conductivity. Here, this work demonstrated the rapid thermal response behaviour of CNT fibers fabricated by floating catalyst CVD method, which was measured by an in-situ technique based on the CNT film electric heater with excellent electrothermal response properties. The temperature dependences of resistance and structure were both explored. Experimental investigation indicates that the reduction in the inter-CNT interspace in the fibers caused by thermally driven actuation was dominantly responsible for the decrease of the fibers resistance during the heating process. Especially, the heated fibers showed 7.2% decrease in electrical resistance at the applied square-wave voltage of 8 V, and good temperature sensitivity (-0.15% °C-1). The as-prepared CNT fibers also featured a rapid and reversible electrical resistance response behaviour when exposed to external heating stimulation. Additionally, with the increment of temperature and twist-degree, the generated contraction actuation increased, which endowed the CNT fibers with more decrease in electrical resistance. These observations further suggested that the temperature-dependent conduction behavior of the CNT fibers with a high reversibility and repeatability was strongly correlated with their structure response to heat stimulation. As a consequence, the temperature-conduction behavior described here may be applied in other CNT-structured fibers and facilitated the improvement in their temperature-sensing applications.

show abstract

Investigation and development of vertically aligned carbon nanotube (VACNT) forest based temperature sensor

Cited by 8 publications

References 14 publications

Fabrication of High-Sensitivity Skin-Attachable Temperature Sensors with Bioinspired Microstructured Adhesive

Fabrication of High-Sensitivity Skin-Attachable Temperature Sensors with Bioinspired Microstructured Adhesive

Wearable Sensing Devices for Point of Care Diagnostics

Temperature-dependent resistance of carbon nanotube fibers

Contact Info

Product

Resources

About