Carbon Black from Diesel Soot for High‐Performance Wearable Pressure Sensors

Liu, Kangning; Yu, Junsheng; Liu, Ying; Yan, Xingwu; Dan, Bai; Liao, Xiaoqing; Zhou, Zijing; Gao, Yuanyuan; Yang, Xin; Li, Lü

doi:10.1002/admt.201900475

Cited by 31 publications

(29 citation statements)

References 47 publications

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“…One approach for tailoring the polymer powder properties is additivation with nanomaterials [9,10]. Carbon-based nanomaterials, such as carbon dots [11], tubes [12][13][14], fibers [15,16] or graphene [17,18], are already known for their applicability in various fields [19][20][21] and can also be used as fillers in polymer powders for PBF-LB/P [10,22]. They significantly affect PBF-LB/P processing behavior in terms of light absorptivity adjustment for diode laser 3D printing [23][24][25][26], modify the mechanical properties [24,25,[27][28][29][30], and introduce new functionalities to the printed part, e.g., electrical conductivity [23,31].…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Nanoparticle Dispersion and Its Effect on the Crystalline Microstructure in Carbon-Additivated PA12 Feedstock Material for Laser Powder Bed Fusion

et al. 2020

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Driven by the rapid development of additive manufacturing technologies and the trend towards mass customization, the development of new feedstock materials has become a key aspect. Additivation of the feedstock with nanoparticles is a possible route for tailoring the feedstock material to the printing process and to modify the properties of the printed parts. This study demonstrates the colloidal additivation of PA12 powder with laser-synthesized carbon nanoparticles at >95% yield, focusing on the dispersion of the nanoparticles on the polymer microparticle surface at nanoparticle loadings below 0.05 vol%. In addition to the descriptors “wt%” and “vol%”, the descriptor “surf%” is discussed for characterizing the quantity and quality of nanoparticle loading based on scanning electron microscopy. The functionalized powders are further characterized by confocal dark field scattering, differential scanning calorimetry, powder rheology measurements (avalanche angle and Hausner ratio), and regarding their processability in laser powder bed fusion (PBF-LB). We find that heterogeneous nucleation is induced even at a nanoparticle loading of just 0.005 vol%. Finally, analysis of the effect of low nanoparticle loadings on the final parts’ microstructure by polarization microscopy shows a nanoparticle loading-dependent change of the dimensions of the lamellar microstructures within the printed part.

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Section: Introductionmentioning

confidence: 99%

Analysis of the Nanoparticle Dispersion and Its Effect on the Crystalline Microstructure in Carbon-Additivated PA12 Feedstock Material for Laser Powder Bed Fusion

et al. 2020

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“…CNT, graphite, graphene and carbon black, etc.) [78][79][80][81][82], metal materials (e.g. Ga-based liquid metals, nanowires or nanoparticles for Ag, Au and Cu) [18,49,[83][84][85] and poly(3,4-ethylenedioxythiophene) (PEDOT)-based polymers [19,86,87].…”

Section: Materials and Fabrication Strategies For Sensing Elementmentioning

confidence: 99%

Eco-friendly Strategies for the Material and Fabrication of Wearable Sensors

Liu

Shang

et al. 2020

Int. J. of Precis. Eng. and Manuf.-Green Tech.

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Wearable sensors are attracting great attentions due to their potential applications in human health monitoring and caring systems. The wide utilization of wearable electronics may cause great burden to the environment, due to the vast contaminants generated in their fabrication and after their usage. Consequently, great efforts are devoted to the eco-friendly strategies for the material and fabrication in wearable sensors. Herein, recent advantages in developing wearable sensors with eco-friendly materials and green manufacturing approaches are reviewed. The functional materials with accessibility, recoverability and degradability have participated in the sensors as substrates, sensing elements and conductors. The fabrication strategies, from facile manual schemes to low-emission automated techniques are also introduced with their merits and demerits. Finally, the existing challenges and future opportunities in this field are summarized.

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“…In recent years, substantial breakthroughs have been made in relevant research, the first is to select various highly conductive materials as pressure-sensing elements, such as conductive polymers [ 18 , 19 , 20 ], carbon materials [ 21 , 22 , 23 , 24 , 25 , 26 ], metal nanowires [ 27 , 28 , 29 ], and two-dimensional materials [ 30 ]. The second is to design sophisticated microstructures to induce conductive contact enhancement, mainly including common porous structures [ 31 ], micropyramid structures [ 32 ], microdome structures [ 33 ], micropillar structures [ 34 ], and so forth.…”

Section: Introductionmentioning

confidence: 99%

An Ultrahigh Sensitive Paper-Based Pressure Sensor with Intelligent Thermotherapy for Skin-Integrated Electronics

Gao

Liu

et al. 2020

Nanomaterials

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Porous microstructure pressure sensors that are highly sensitive, reliable, low-cost, and environment-friendly have aroused wide attention in intelligent biomedical diagnostics, human–machine interactions, and soft robots. Here, an all-tissue-based piezoresistive pressure sensor with ultrahigh sensitivity and reliability based on the bottom interdigitated tissue electrode and the top bridge of a microporous tissue/carbon nanotube composite was proposed. Such pressure sensors exhibited ultrahigh sensitivity (≈1911.4 kPa−1), fast response time (<5 ms), low fatigue of over 2000 loading/unloading cycles, and robust environmental degradability. These enabled sensors can not only monitor the critical physiological signals of the human body but also realize electrothermal conversion at a specific voltage, which enhances the possibility of creating wearable thermotherapy electronics for protecting against rheumatoid arthritis and cervical spondylosis. Furthermore, the sensor successfully transmitted wireless signals to smartphones via Bluetooth, indicating its potential as reliable skin-integrated electronics. This work provides a highly feasible strategy for promoting high-performance wearable thermotherapy electronics for the next-generation artificial skin.

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Carbon Black from Diesel Soot for High‐Performance Wearable Pressure Sensors

Cited by 31 publications

References 47 publications

Analysis of the Nanoparticle Dispersion and Its Effect on the Crystalline Microstructure in Carbon-Additivated PA12 Feedstock Material for Laser Powder Bed Fusion

Analysis of the Nanoparticle Dispersion and Its Effect on the Crystalline Microstructure in Carbon-Additivated PA12 Feedstock Material for Laser Powder Bed Fusion

Eco-friendly Strategies for the Material and Fabrication of Wearable Sensors

An Ultrahigh Sensitive Paper-Based Pressure Sensor with Intelligent Thermotherapy for Skin-Integrated Electronics

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