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Polymeric Nanocomposites for Flexible Sensor
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Polymeric Nanocomposites for Flexible Sensor

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Electronic Materials".

Deadline for manuscript submissions: closed (31 July 2020) | Viewed by 28378

Special Issue Editor

Dr. Chang-Soo Lee

E-Mail Website
Guest Editor
Bionanotechnology Research Center, Korea Research Institute of Bioscience & Biotechnology (KRIBB), Daejeon 34141, Republic of Korea
Interests: nanobiomaterials; nanobiosensors; fluorescent nanomaterials; biochips/sensors; carbon nanomaterials; flexible sensors; electrical conductivity
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Polymeric nanocomposites are currently an area of increasing scientific as well as technical interest. The addition of variable percents of nanosized materials in polymer changes their properties. Polymeric nanocomposites exhibit superior properties compared to micro- or macrocomposites. The improved combinations of electrical, mechanical and thermal properties of nanocomposites have resulted in major interest in various electronic applications. Polymeric nanocomposites can be synthesized for various applications by the proper selection of the matrix, nano-reinforcement material, synthesis method and surface modification of either the reinforcement or polymer. Many polymeric-nanocomposite-based products have been commercialized. In particular, flexible sensors fabricated with polymeric nanocomposites have been attached to a person along with an embedded system to monitor a parameter and transfer significant data to a monitoring unit for further analyses. The use of wearable sensors has played quite an important role in monitoring a person’s physiological parameters to minimize any physical malfunctioning. This Special Issue categorizes the work according to the polymeric nanocomposites used to design the system, the network protocols, and the different types of activities that were monitored. It also highlights various types of polymeric nanocomposites for flexible sensors, their unique properties, various electronic applications for sensors with some specific examples.

This Special Issue invites original papers and reviews reporting on recent progress in the following areas:

  • Fabrication methods of the polymeric nanocomposites for flexible sensors;
  • Chemical and physical surface modification of polymeric nanocomposites to improve sensing performance;
  • Next-generation polymeric-nanocomposite-based flexible sensors;
  • Integration process of polymeric-nanocomposite-based biosensors into smart devices and their point-of-care testing;
  • Properties of polymeric-nanocomposite-based biosensors;
  • Biological properties of polymeric-nanocomposite-based biosensors.

Prof. Dr. Chang-Soo Lee
Guest Editor

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Keywords

  • Polymers
  • Composites
  • Beads
  • Hybrids
  • Hard-template
  • Soft-template
  • Biosensors
  • Immunoassay
  • Field-Effect Transistor
  • Electrochemical Sensor
  • Optical Sensor
  • Rapid Kit
  • Mobile Networks
  • Point-of-Care Test
  • Interfacing Chemistry
  • Biomolecular Detection
  • Surface Modification

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Published Papers (3 papers)

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Research

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20 pages, 7306 KiB  
Article
Effects on the Mechanical Properties of Nacre-Like Bio-Hybrid Membranes with Inter-Penetrating Petal Structure Based on Magadiite
by Mingliang Ge, Xubin Wang, Mingyi Du, Guodong Liang, Guoqing Hu and Jahangir Alam S.M.
Materials 2019, 12(1), 173; https://doi.org/10.3390/ma12010173 - 7 Jan 2019
Cited by 9 | Viewed by 4146
Abstract
Rigid biological systems are increasingly becoming a source of inspiration for the fabrication of the advanced functional materials due to their diverse hierarchical structures and remarkable engineering properties. As a bionic biomaterial with a clear layered structure, excellent mechanical properties, and interesting rainbow [...] Read more.
Rigid biological systems are increasingly becoming a source of inspiration for the fabrication of the advanced functional materials due to their diverse hierarchical structures and remarkable engineering properties. As a bionic biomaterial with a clear layered structure, excellent mechanical properties, and interesting rainbow colors, nacre has become one of the most attractive models for novel artificial materials design. In this research paper, the tough and strong nacre-like bio-hybrid membranes with an interpenetrating petals structure were fabricated from chitosan (CS) and magadiite (MAG) clay nanosheets through the gel-casting self-assembling method. The analyses from X-ray diffraction (XRD), scanning electron microscope (SEM), and observations of water droplets on membranes indicated that the nacre-like hybrid membranes had a layered compact structure. Fourier transforms infrared spectroscopy (FTIR) analyses suggested that the CS molecular chains formed chemical bonds and hydrogen bonds with MAG layers. The inter-penetrating petal layered structure had a good effect on the mechanical properties of a nacre-like bio-hybrid membranes and the tensile strength of the hybrid membranes could reach at 78.6 MPa. However, the transmission analyses of the results showed that the hybrid membranes still had a certain visible light transmittance. Finally, the hybrid membranes possessed an intriguing efficient fire-shielding property during exposure to the flame of alcohol burner. Consequently, the great biocompatibility and excellent mechanical properties of the bio-hybrid membranes with the special interpenetrating petals structure provides a great opportunity for these composites to be widely applied in biomaterial research. Full article
(This article belongs to the Special Issue Polymeric Nanocomposites for Flexible Sensor)
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16 pages, 2578 KiB  
Article
Adsorption Analyses of Phenol from Aqueous Solutions Using Magadiite Modified with Organo-Functional Groups: Kinetic and Equilibrium Studies
by Mingliang Ge, Xubin Wang, Mingyi Du, Guodong Liang, Guoqing Hu and Jahangir Alam S.M.
Materials 2019, 12(1), 96; https://doi.org/10.3390/ma12010096 - 28 Dec 2018
Cited by 39 | Viewed by 3547
Abstract
Organically-modified magadiite (MAG–CTAB–KH550) was synthesized via ion-exchange method and condensation reaction in the presence of pure magadiite (MAG), cetyltrimethylammonium bromide (CTAB) and γ-aminopropyltriethoxysilane (KH550) in aqueous solution in this research. This new adsorbent material was studied using scanning electron microscope (SEM), X-ray diffraction [...] Read more.
Organically-modified magadiite (MAG–CTAB–KH550) was synthesized via ion-exchange method and condensation reaction in the presence of pure magadiite (MAG), cetyltrimethylammonium bromide (CTAB) and γ-aminopropyltriethoxysilane (KH550) in aqueous solution in this research. This new adsorbent material was studied using scanning electron microscope (SEM), X-ray diffraction (XRD), Fourier transforms infrared spectroscopy (FTIR), and N2 adsorption/desorption isotherms process. It was found that the MAG–CTAB–KH550 has high Brunaur-Emmet-Teller (BET) specific surface area and mesoporous pore size distribution which enhanced its ability to remove phenol in aqueous solution; and, the value of pH has a relatively large impact on the adsorption behavior of the sorbent. Finally, the adsorptive behavior of the mesoporous material on phenol was followed pseudo-second-order kinetic adsorption model. In contrast, the adsorption equilibrium isotherm was better performed Langmuir isotherm model than the Freundlich isotherm model; in addition, the results also showed that the MAG–CTAB–KH550 had a better adsorption capacity and removal efficiency than MAG. Full article
(This article belongs to the Special Issue Polymeric Nanocomposites for Flexible Sensor)
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Review

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34 pages, 4527 KiB  
Review
Immobilized Enzymes in Biosensor Applications
by Hoang Hiep Nguyen, Sun Hyeok Lee, Ui Jin Lee, Cesar D. Fermin and Moonil Kim
Materials 2019, 12(1), 121; https://doi.org/10.3390/ma12010121 - 2 Jan 2019
Cited by 409 | Viewed by 20163
Abstract
Enzyme-based biosensing devices have been extensively developed over the last few decades, and have proven to be innovative techniques in the qualitative and quantitative analysis of a variety of target substrates over a wide range of applications. Distinct advantages that enzyme-based biosensors provide, [...] Read more.
Enzyme-based biosensing devices have been extensively developed over the last few decades, and have proven to be innovative techniques in the qualitative and quantitative analysis of a variety of target substrates over a wide range of applications. Distinct advantages that enzyme-based biosensors provide, such as high sensitivity and specificity, portability, cost-effectiveness, and the possibilities for miniaturization and point-of-care diagnostic testing make them more and more attractive for research focused on clinical analysis, food safety control, or disease monitoring purposes. Therefore, this review article investigates the operating principle of enzymatic biosensors utilizing electrochemical, optical, thermistor, and piezoelectric measurement techniques and their applications in the literature, as well as approaches in improving the use of enzymes for biosensors. Full article
(This article belongs to the Special Issue Polymeric Nanocomposites for Flexible Sensor)
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