A mechanically strong and sensitive CNT/rGO–CNF carbon aerogel for piezoresistive sensors

2018 ◽  
Vol 6 (46) ◽  
pp. 23550-23559 ◽  
Author(s):  
Xinwen Peng ◽  
Kunze Wu ◽  
Yijie Hu ◽  
Hao Zhuo ◽  
Zehong Chen ◽  
...  
Keyword(s):  
Carbon Aerogel ◽  
Piezoresistive Sensors

A mechanically strong, sensitive and lightweight CNT/rGO–CNF carbon aerogel is fabricated by synergistic assembly of CNFs and CNTs to form ordered wave-shaped rGO layers and reinforcing the carbon layers.

A carbon aerogel with super mechanical and sensing performances for wearable piezoresistive sensors

2019 ◽  
Vol 7 (14) ◽  
pp. 8092-8100 ◽  
Author(s):  
Hao Zhuo ◽  
Yijie Hu ◽  
Zehong Chen ◽  
Xinwen Peng ◽  
Linxiang Liu ◽  
...  
Keyword(s):  
Cellulose Nanocrystals ◽  
Carbon Aerogel ◽  
Piezoresistive Sensors ◽  
Mechanical Performances

A compressible carbon aerogel with not only super mechanical performances but also ultrahigh linear sensitivity is fabricated from MXene nanosheets and cellulose nanocrystals (CNCs).

Ambulatory Activity Monitoring

2009 ◽  
Vol 14 (2) ◽  
pp. 142-152 ◽  
Author(s):  
Johannes B.J. Bussmann ◽  
Ulrich W. Ebner-Priemer ◽  
Jochen Fahrenberg
Keyword(s):  
Physical Activity ◽  
Activity Monitoring ◽  
Main Stream ◽  
Computer Algorithms ◽  
Ambulatory Activity ◽  
Physiological Variables ◽  
Piezoresistive Sensors ◽  
Self Reports ◽  
Recent Developments ◽  
Objectively Measured

Behavior is central to psychology in almost any definition. Although observable activity is a core aspect of behavior, assessment strategies have tended to focus on emotional, cognitive, or physiological responses. When physical activity is assessed, it is done so mostly with questionnaires. Converging evidence of only a moderate association between self-reports of physical activity and objectively measured physical activity does raise questions about the validity of these self-reports. Ambulatory activity monitoring, defined as the measurement strategy to assess physical activity, posture, and movement patterns continuously in everyday life, has made major advances over the last decade and has considerable potential for further application in the assessment of observable activity, a core aspect of behavior. With new piezoresistive sensors and advanced computer algorithms, the objective measurement of physical activity, posture, and movement is much more easily achieved and measurement precision has improved tremendously. With this overview, we introduce to the reader some recent developments in ambulatory activity monitoring. We will elucidate the discrepancies between objective and subjective reports of activity, outline recent methodological developments, and offer the reader a framework for developing insight into the state of the art in ambulatory activity-monitoring technology, discuss methodological aspects of time-based design and psychometric properties, and demonstrate recent applications. Although not yet main stream, ambulatory activity monitoring – especially in combination with the simultaneous assessment of emotions, mood, or physiological variables – provides a comprehensive methodology for psychology because of its suitability for explaining behavior in context.

Capacitance control of carbon aerogel electrodes

2004 ◽  
Vol 347 (1-3) ◽  
pp. 238-245 ◽  
Author(s):  
Sung-Woo Hwang ◽  
Sang-Hoon Hyun
Keyword(s):  
Carbon Aerogel

Three-dimensional light-weight piezoresistive sensors based on conductive polyurethane sponges coated with hybrid CNT/CB nanoparticles

2021 ◽  
Vol 548 ◽  
pp. 149268
Author(s):  
Litao Huang ◽  
Jianwen Chen ◽  
Youquan Xu ◽  
Dengwen Hu ◽  
Xihua Cui ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Light Weight ◽  
Piezoresistive Sensors

Carbon aerogel-based solid-phase microextraction coating for the analysis of organophosphorus pesticides

2021 ◽  
Vol 13 (1) ◽  
pp. 69-76
Author(s):  
Piia Jõul ◽  
Merike Vaher ◽  
Maria Kuhtinskaja
Keyword(s):  
Environmental Samples ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Organophosphorus Pesticides ◽  
Carbon Aerogel ◽  
Spme Fiber

A carbon aerogel-coated SPME fiber is prepared, and the DI-SPME-GC-MS method is developed for the analysis of organophosphorus pesticides from environmental samples.

scholarly journals Environmentally Friendly and Multifunctional Shaddock Peel-Based Carbon Aerogel for Thermal-Insulation and Microwave Absorption

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Weihua Gu ◽  
Jiaqi Sheng ◽  
Qianqian Huang ◽  
Gehuan Wang ◽  
Jiabin Chen ◽  
...  
Keyword(s):  
Microwave Absorption ◽  
Thermal Insulation ◽  
Freeze Drying ◽  
Thermal Infrared ◽  
Carbon Aerogel ◽  
Carbon Aerogels ◽  
List Type ◽  
Drying Method ◽  
Cross Sectional ◽  
Compression Resistance

Highlights The eco-friendly shaddock peel-derived carbon aerogels were prepared by a freeze-drying method. Multiple functions such as thermal insulation, compression resistance and microwave absorption can be integrated into one material-carbon aerogel. Novel computer simulation technology strategy was selected to simulate significant radar cross-sectional reduction values under real far field condition. . Abstract Eco-friendly electromagnetic wave absorbing materials with excellent thermal infrared stealth property, heat-insulating ability and compression resistance are highly attractive in practical applications. Meeting the aforesaid requirements simultaneously is a formidable challenge. Herein, ultra-light carbon aerogels were fabricated via fresh shaddock peel by facile freeze-drying method and calcination process, forming porous network architecture. With the heating platform temperature of 70 °C, the upper surface temperatures of the as-prepared carbon aerogel present a slow upward trend. The color of the sample surface in thermal infrared images is similar to that of the surroundings. With the maximum compressive stress of 2.435 kPa, the carbon aerogels can provide favorable endurance. The shaddock peel-based carbon aerogels possess the minimum reflection loss value (RLmin) of − 29.50 dB in X band. Meanwhile, the effective absorption bandwidth covers 5.80 GHz at a relatively thin thickness of only 1.7 mm. With the detection theta of 0°, the maximum radar cross-sectional (RCS) reduction values of 16.28 dB m2 can be achieved. Theoretical simulations of RCS have aroused extensive interest owing to their ingenious design and time-saving feature. This work paves the way for preparing multi-functional microwave absorbers derived from biomass raw materials under the guidance of RCS simulations.

Ultramicroporous carbon aerogels encapsulating sulfur as the cathode for lithium–sulfur batteries

2021 ◽  
Author(s):  
Maryam Nojabaee ◽  
Brigitta Sievert ◽  
Marina Schwan ◽  
Jessica Schettler ◽  
Frieder Warth ◽  
...  
Keyword(s):  
Carbon Aerogel ◽  
Composite Cathode ◽  
Microporous Carbon ◽  
Carbon Aerogels ◽  
Lithium Sulfur Batteries ◽  
Lithium Sulfur

In the presented study, a sulfur infiltrated ultra-microporous carbon aerogel as a composite cathode for lithium sulfur batteries is developed and investigated.

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