Article
Materials Science, Composites
R. Brito-Pereira, C. R. Tubio, P. Costa, S. Lanceros-Mendez
Summary: Carbon nanotube and reduced graphene oxide filled wax composites have been developed for screen-printing and molding techniques to manufacture conductive and multifunctional materials. These composites exhibit low electrical percolation thresholds, good filler dispersion, and mechanical properties, making them suitable for sensing applications.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Muhammad Haseeb ur Rehman, Rabia Nazar, Saima Yasin, Naveed Ramzan, Muhammad Salman Habib
Summary: Thermoplastic polyurethane (TPU) nanocomposites containing multiwalled carbon nanotubes (MWNTs) and polyaniline (PANI) were prepared by in-situ polymerization for piezoresistive strain sensing applications. The results showed that the concentration of MWNTs significantly affected the conductivity of the composites, and the addition of PANI and MWNTs improved the electrical conductivity and mechanical flexibility of the composites.
Article
Materials Science, Composites
E. Pimentela, P. Costa, C. R. Tubio, J. L. Vilaca, C. M. Costa, S. Lanceros-Mendez, D. Miranda
Summary: Flexible sensor devices are in high demand for new and improved health treatments, particularly for neurogenic bladder dysfunction. Polymer composites based on different matrices (CMC, SEBS, and PVA) and varying concentrations of multiwalled carbon nanotubes (CNT) have been developed for catheter medical device application. These composites demonstrate excellent electrical and mechanical properties, with high conductivity and piezoresistive response.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Manufacturing
Anli Chen, Chaoying Wang, Ola A. Abu Ali, Samy F. Mahmoud, Yuting Shi, Yanxiu Ji, Hassan Algadi, Salah M. El-Bahy, Mina Huang, Zhanhu Guo, Dapeng Cui, Huige Wei
Summary: A simple strategy is proposed to fabricate MXene@nitrogen-doped carbon (MC) composite film with porous networks. Nitrogen doping improves the electrochemical performance of MC, while the porous network increases ion transport rate and strain sensitivity. The assembled device and sensor based on MC exhibit high energy density and sensitivity.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Article
Materials Science, Multidisciplinary
Mohammad Abshirini, Mrinal C. Saha, M. Cengiz Altan, Yingtao Liu
Summary: This work presents a novel approach to synthesize porous conductive polymer nanocomposites (CPNCs) with strain sensing capabilities by combining direct ink writing (DIW) and solvent evaporation induced phase separation. The resulting CPNCs exhibit a microscaled porous network structure, which is formed during the curing cycle induced by solvent evaporation and nonsolvent phase infiltration. The optimal formulation and printing conditions are identified to achieve high sensitivity and flexibility. The sensors made with the optimum conditions are then characterized for long-term piezoresistive applications.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Nanoscience & Nanotechnology
Vasagiri Suresh, Rajesh Kumar Burra
Summary: Pollution introduces harmful substances into the natural environment, resulting in environmental alterations. Industries, with their power plants, chamber processes, cleaning operations, and material burning processes, are the major source of air pollution. Volatile organic compounds and other contaminants are released into the atmosphere. In order to meet national air quality standards, this study proposes an air pollution monitoring system based on sensor fusion technology, which has already been implemented in several nations.
Review
Nanoscience & Nanotechnology
Anindya Nag, Subhas Chandra Mukhopadhyay
Summary: This paper provides a comprehensive review of the preparation and implementation of carbon nanotubes (CNTs) for piezoresistive strain-sensing applications. It discusses the fabrication techniques of CNTs and the classification of piezoresistive sensing prototypes based on single-walled and multi-walled CNTs. The significance and applications of piezoresistive sensing in flexible microelectronics are emphasized.
JOURNAL OF SCIENCE-ADVANCED MATERIALS AND DEVICES
(2022)
Review
Chemistry, Analytical
Rafael Matias Silva, Alexsandra Dias da Silva, Jessica Rocha Camargo, Bruna Santos de Castro, Lais Muniz Meireles, Patricia Soares Silva, Bruno Campos Janegitz, Tiago Almeida Silva
Summary: Electrochemical sensors consisting of screen-printed electrodes (SPEs) are widely used in different fields due to their inherent characteristics such as miniaturization, cost reduction, low sample consumption, compatibility with portable equipment, and disposability. The performance of SPEs is directly influenced by the quality of the material used for printing and modifying the electrodes. Various carbon nanomaterials, including graphene, carbon nanotubes, carbon black, carbon quantum dots, graphitic carbon nitride, and biochar, have been explored for the preparation and modification of SPEs, enhancing their electrochemical response and sensitivity, as well as allowing the immobilization of biological agents for biosensor manufacturing. This review provides an overview of the current use of carbonaceous nanomaterials in the context of electrochemical SPE sensors and discusses potential future directions.
Article
Engineering, Electrical & Electronic
Omer Gokalp Akcan, Kuter Erdil, Dogukan Korkut, Eray A. Baran, Y. Daghan Gokdel
Summary: This study presents a low-cost disposable flexible sensor system capable of impact localization and measurement. The sensor structure uses a special series of Bristol paper and has a low-cost and quick manufacturing process. Experimental results demonstrate its high measurement sensitivity and fatigue resilience.
IEEE SENSORS JOURNAL
(2022)
Article
Chemistry, Analytical
Farid Sayar Irani, Ali Hosseinpour Shafaghi, Melih Can Tasdelen, Tugce Delipinar, Ceyda Elcin Kaya, Guney Guven Yapici, Murat Kaya Yapici
Summary: This review provides an in-depth overview of the latest studies on graphene and its strain sensing mechanism, as well as various applications. The article starts by describing the fundamental properties, synthesis techniques, and characterization methods of graphene. It then discusses various types of graphene-based strain sensors and demonstrates the challenges in material synthesis, device fabrication, and integration. Finally, the review describes several applications of graphene-based strain sensors.
Article
Chemistry, Analytical
Maik Bertke, Ina Kirsch, Erik Uhde, Erwin Peiner
Summary: A single-chip differential mobility particle sizer based on resonant micro cantilevers and defined micro-fluidic channels is developed for monitoring airborne nano-sized particles. The instrument can clean polluted cantilevers without disassembling the sensor chip and demonstrates high accuracy in mass concentration measurement.
Article
Optics
Q. Li, C. P. Ho, H. Tang, M. Okano, K. Ikeda, S. Takagi, M. Takenaka
Summary: A novel Si racetrack optical modulator integrated with a III-V/Si hybrid MOS optical phase shifter was fabricated with advantages of miniaturization, low energy consumption, and high modulation bandwidth.
Article
Physics, Multidisciplinary
Ankur Saxena, Mahesh Kumar, Dhaneshwar Mishra, Kulwant Singh
Summary: This study analyzes an integrated microfluidic pressure sensing mechanism in a microfluidic device, which consists of a poly dimethyl siloxane (PDMS) based material with a microcantilever integrated on one side of the microchannel. The pressure of fluid in the microchannel is measured by the deflection of the PDMS microcantilever. The results show that the Pi-shaped microcantilever achieved the maximum deflection in fluid plasma (37.05 μm) and water (30.98 μm) at a fluid inlet velocity of 8000 μm/s.
Article
Engineering, Electrical & Electronic
Sara Naderizadeh, Giovanni Santagiuliana, Wei Tu, Derek Marsh, Emiliano Bilotti, James J. C. Busfield
Summary: Pressure sensors used in wearable and medical applications are often complex to design and have limited sensitivity. Researchers have developed a thermoplastic polyurethane/carbon nanotubes composite film through a simplified method. The sensors made from this film showed excellent sensitivity and durability, indicating their potential for use in wearable devices.
IEEE SENSORS JOURNAL
(2023)
Article
Engineering, Chemical
Jer-Chyi Wang, Rajat Subhra Karmakar, Ting-Han Lin, Ming-Chung Wu, Kuo-Hsuan Chang
Summary: The study aims to enhance the stability of piezoresistive pressure sensors for highly reliable electronic device applications. By introducing a metallic layer between the PEDOT:PSS sensing membrane and ITO electrode, the interface reaction was suppressed significantly. The packaged devices show excellent resistance to humidity absorption.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2021)
