MWCNT-PDMS Nanocomposite Based Flexible Multifunctional Sensor for Health Monitoring

Ramalingame, Rajarajan; Udhayakumar, N.; Torres, Renato da Veiga; Neckel, Itamar T.; Müller, Christian; Kanoun, Olfa

doi:10.1016/j.proeng.2017.02.003

Cited by 18 publications

(6 citation statements)

References 2 publications

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“…Moreover, a high-throughput wireless body temperature monitoring system including wireless sensor modules, a cloud server, and a portable electronic device is constructed, which can achieve a remote and multichannel body temperature monitoring efficiently. time, to improve the flexibility of the sensor, polymers including polydimethylsiloxane (PDMS), [21] polyvinylidene fluoride (PVDF), [22] poly (3,4-ethylenedioxythiophene)-poly (styrene sulfonate) (PEDOT: PSS), [23] polyimide (PI), [24] polyurethane (PU), [25] polyethylene terephthalate (PET), [26] polyvinyl alcohol (PVA), [27] paper, [28] and biodegradable materials [29,30] have been widely studied. At present, the most used flexible substrate in flexible temperature sensors is PDMS, [7] which is an excellent thermal and electrical insulating material with better thermal stability.…”

Section: Introductionmentioning

confidence: 99%

High Throughput In–Situ Temperature Sensor Array with High Sensitivity and Excellent Linearity for Wireless Body Temperature Monitoring

et al. 2022

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High sensitivity, excellent linearity, and wireless monitoring are strongly desired for the practical application of flexible temperature sensors in real‐time wearable health care. Especially the multichannel body temperature monitoring system has high requirements on the performance of the sensor because it needs to monitor a large amount of data at the same time. Herein, a flexible temperature sensor based on a porous graphene/polydimethylsiloxane sensing layer is developed. The prepared sensor exhibits high sensitivity of 5.203% °C−1 for temperature sensing between 30 and 70 °C, and excellent linearity (R2 = 0.996) in the temperature range from 30 to 70 °C. Based on its excellent performance, the proposed high‐performance temperature sensors can be applied in practical applications such as body temperature monitoring and human breath monitoring under different states including slow breath, normal breath, and fast breath. Moreover, a high‐throughput wireless body temperature monitoring system including wireless sensor modules, a cloud server, and a portable electronic device is constructed, which can achieve a remote and multichannel body temperature monitoring efficiently.

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Section: Introductionmentioning

confidence: 99%

High Throughput In–Situ Temperature Sensor Array with High Sensitivity and Excellent Linearity for Wireless Body Temperature Monitoring

et al. 2022

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“…To replace the metal thin-film electrodes, multiwalled-carbon nanotubes (MWCNTs) are suggested as one of the representative carbon materials, such as carbon fibers, carbon cloth, and graphene. It is because MWCNTs have the advantages of low cost, high electrical/thermal conductivity, high oxidation resistance and mechanical strength. − Since MWCNT-cross-linked thin films are relatively stiff and easily broken by external forces, we employ normal papers as promising platform materials to support MWCNT thin-film-based electrodes because they are inexpensive, very flexible, and can be easily patterned using commercial plotters . To combine nEMs with the MWCNT paper electrode, suitable binders are required.…”

Section: Introductionmentioning

confidence: 99%

Highly Flexible and Patternable Multiwalled-Carbon Nanotube/Nitrocellulose Hybrid Conducting Paper Electrodes as Heating Platforms for Effective Ignition of Nanoenergetic Materials

Kim

Cha

Kim

et al. 2020

ACS Appl. Mater. Interfaces

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In this study, a highly flexible, patternable multiwalled-carbon nanotube (MWCNT) paper electrode was specially designed and fabricated. The addition of a nitrocellulose (NC) polymer binder at less than the critical amount (≤2 wt %) was found to be effective for maintaining both the flexibility and electrical conductance of the resulting MWCNT paper electrode. The fabricated MWCNT paper electrode was then employed as a heating platform to ignite Al/CuO nanoparticle-based nanoenergetic materials (nEMs). The nEM layer was drop-cast on the surface of the MWCNT paper electrode with specially patterned shapes using a plotter, and its ignition was evaluated by applying various voltages through the MWCNT paper electrode. To increase the adhesion between the nEM layer and MWCNT paper electrode and to decrease the sparking sensitivity of the nEM layer, it was essential to incorporate NC in the nEM matrix. However, the combustion and explosion properties of nEM layers deteriorated with the addition of NC, enabling the estimation of the optimum amount of NC to be incorporated. The fabricated igniter can be employed in various thermal engineering applications, such as in the ignition of explosives and propellants, and in pyrotechnics. To demonstrate this, a compact, flexible, and patternable igniter composed of the NC/nEM layer (NC/nEM = 2:8 wt %) on an MWCNT paper electrode was used to successfully ignite solid propellants for launching a small rocket.

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“…fabricated a carbon nanotube (CNT)/polydimethylsiloxane (PDMS) composite-based dry electrocardiography (ECG) electrode which could be connected to conventional ECG devices and showed long-term wearable monitoring capability and resistance to motion and sweat. Multi-walled carbon nanotube/polydimethylsiloxane (MWCNT/PDMS) nanocomposite also proved to be effective and useful in applications like pressure sensors and sport devices due to its mechanical strength and simple fabrication method 10,11…”

Section: Introductionmentioning

confidence: 99%

“…Multi-walled carbon nanotube/polydimethylsiloxane (MWCNT/PDMS) nanocomposite also proved to be effective and useful in applications like pressure sensors and sport devices due to its mechanical strength and simple fabrication method. 10,11 Similar to all fiber composites, both mechanical (stiffness and strength) and functional (electrical, magnetic, and optical) properties of CNT/PDMS composites are linked directly to the alignment of carbon nanotubes in the polymeric matrix. The alignment of CNTs in CNT/polymer composites induces anisotropy in the matrix and improves physical and mechanical properties along the alignment direction.…”

Section: Introductionmentioning

confidence: 99%

Highly conductive multi-walled carbon nanotube/polydimethylsiloxane (MWCNT/PDMS) nanocomposite for microfluidic applications

Dashtaki

Nassajpour-Esfahani

Bayareh

et al. 2020

Journal of Composite Materials

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Conductive materials are required for sensing and actuation purposes in microfluidic devices. Electrical and mechanical properties of aligned CNTs/PDMS nanocomposites fabricated in AC and quasi-AC electric fields were measured. Field emission scanning electron microscope and elemental mapping were used to evaluate the microstructural properties of fabricated specimens. Results showed that nanocomposite properties were dependent on CNT concentration. A homogenized and nonagglomerated composite was obtained using a quasi-AC electric field with the voltage of 1075 V zero to peak at a frequency of 100 Hz and current of 35 milliamps when applied to suspension for 2 hours at 80 °C. The aligned nanocomposite with 1 wt% of CNT exhibited an electrical conductivity, Young’s modulus, and tensile strength of 10-6 S/cm, 7.23 MPa, and 1.02 MPa, respectively.

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MWCNT-PDMS Nanocomposite Based Flexible Multifunctional Sensor for Health Monitoring

Cited by 18 publications

References 2 publications

High Throughput In–Situ Temperature Sensor Array with High Sensitivity and Excellent Linearity for Wireless Body Temperature Monitoring

High Throughput In–Situ Temperature Sensor Array with High Sensitivity and Excellent Linearity for Wireless Body Temperature Monitoring

Highly Flexible and Patternable Multiwalled-Carbon Nanotube/Nitrocellulose Hybrid Conducting Paper Electrodes as Heating Platforms for Effective Ignition of Nanoenergetic Materials

Highly conductive multi-walled carbon nanotube/polydimethylsiloxane (MWCNT/PDMS) nanocomposite for microfluidic applications

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