Nanotubes and nanoparticles based 3D scaffolds for the construction of high performance Biosensors

2014 ◽  
Vol 1700 ◽  
pp. 97-102
Author(s):  
Meenakshi Singh ◽  
Michael Holzinger ◽  
Maryam Tabrizian ◽  
Serge Cosnier
Keyword(s):  
Carbon Nanotubes ◽  
Glucose Oxidase ◽  
Current Density ◽  
High Performance ◽  
Single Walled Carbon Nanotubes ◽  
3D Scaffolds ◽  
Pore Sizes ◽  
Enzyme Sensors ◽  
The One ◽  
Walled Carbon Nanotubes

ABSTRACT3D scaffolds with different pore sizes, using single-walled carbon nanotubes (SWCNTs) and nanoparticles of different size were constructed. Biotinylated glucose oxidase (GOX-B) and anti-cholera toxin (anti-CT) were immobilized onto the one and two level nanoscaffolds, functionalized with pyrene-β-cyclodextrin for the construction of glucose based enzyme sensors and immunosensors, respectively. For enzyme sensors, highest current density and sensitivity (41.72 μA cm-2, 3 mA M-1 cm-2) were obtained with two level scaffolds made with 100 nm nanoparticles. In contrast to this, for immunosensors, highest current density and sensitivity (11.71 μA cm-2, 116.2 μA M-1 cm-2) were obtained with two level scaffolds made with 500 nm nanoparticles, indicating that the pore sizes can be adjusted using different size of nanoparticles for the respective applications.

scholarly journals Synthesis of silver nanoparticles embedded with single-walled carbon nanotubes for printable elastic electrodes and sensors with high stability

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jae-Won Lee ◽  
Joon Young Cho ◽  
Mi Jeong Kim ◽  
Jung Hoon Kim ◽  
Jong Hwan Park ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Silver Nanoparticles ◽  
High Performance ◽  
Composite Films ◽  
Single Walled Carbon Nanotubes ◽  
Gauge Factor ◽  
Time Interval ◽  
Single Walled Carbon ◽  
Irradiation Energy ◽  
Walled Carbon Nanotubes

AbstractSoft electronic devices that are bendable and stretchable require stretchable electric or electronic components. Nanostructured conducting materials or soft conducting polymers are one of the most promising fillers to achieve high performance and durability. Here, we report silver nanoparticles (AgNPs) embedded with single-walled carbon nanotubes (SWCNTs) synthesized in aqueous solutions at room temperature, using NaBH4 as a reducing agent in the presence of highly oxidized SWCNTs as efficient nucleation agents. Elastic composite films composed of the AgNPs-embedded SWCNTs, Ag flake, and polydimethylsiloxane are irradiated with radiation from a Xenon flash lamp within a time interval of one second for efficient sintering of conductive fillers. Under high irradiation energy, the stretchable electrodes are created with a maximum conductivity of 4,907 S cm−1 and a highly stretchable stability of over 10,000 cycles under a 20% strain. Moreover, under a low irradiation energy, strain sensors with a gauge factor of 76 under a 20% strain and 5.4 under a 5% strain are fabricated. For practical demonstration, the fabricated stretchable electrode and strain sensor are attached to a human finger for detecting the motions of the finger.

Molecular dynamics simulations of single-walled carbon nanotubes and polynylon66

2019 ◽  
Vol 33 (23) ◽  
pp. 1950258 ◽  
Author(s):  
Danhui Zhang ◽  
Houbo Yang ◽  
Zhongkui Liu ◽  
Anmin Liu
Keyword(s):  
Carbon Nanotubes ◽  
Molecular Dynamics ◽  
Carbon Nanotube ◽  
High Performance ◽  
Single Walled Carbon Nanotubes ◽  
Md Simulations ◽  
Interfacial Interaction ◽  
Radius Of Gyration ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

Polynylon66, as a kind of important engineering plastics, is widely used in various fields. In this work, we studied the interfacial interactions between polynylon66 and single-walled carbon nanotubes (SWCNTs) using molecular dynamics (MD) simulations. The results showed that the polynylon66 could interact with the SWCNTs and the mechanism of interfacial interaction between polynylon66 and SWCNTs was also discussed. Furthermore, the morphology of polynylon66 adsorbed to the surface of SWCNTs was investigated by the radius of gyration. Influence factors such as the initial angle between polynylon66 chain and nanotube axis, SWCNT radius and length of polynylon66 on interfacial adhesion of single-walled carbon nanotube-polymer and the radius of gyration of the polymers were studied. These results will help to better understand the interfacial interaction between polymer and carbon nanotube (CNT) and also guide the fabrication of high performance polymer/carbon nanotube nanocomposites.

scholarly journals “Wiring” redox-active polyoxometalates to carbon nanotubes using a sonication-driven periodic functionalization strategy

2016 ◽  
Vol 9 (3) ◽  
pp. 1095-1101 ◽  
Author(s):  
Jun Hu ◽  
Yuanchun Ji ◽  
Wei Chen ◽  
Carsten Streb ◽  
Yu-Fei Song
Keyword(s):  
Carbon Nanotubes ◽  
Lithium Ion Batteries ◽  
High Performance ◽  
Lithium Ion ◽  
Single Walled Carbon Nanotubes ◽  
Single Walled Carbon ◽  
Redox Active ◽  
One Step ◽  
Walled Carbon Nanotubes

A universal one-step strategy for the periodic deposition of redox-active polyoxometalate nanocrystals on single-walled carbon nanotubes is reported, giving access to high-performance electrodes for lithium-ion batteries.

Attachment of Functionalized Single-Walled Carbon Nanotubes (SWNTs) to Silicon Surfaces

2008 ◽  
Vol 8 (3) ◽  
pp. 1545-1550 ◽  
Author(s):  
Liling Zeng ◽  
Nancy Pattyn ◽  
Andrew R. Barron
Keyword(s):  
Carbon Nanotubes ◽  
Single Walled Carbon Nanotubes ◽  
Water Soluble ◽  
Silicon Surfaces ◽  
One Pot ◽  
Single Walled Carbon ◽  
Direct Fluorination ◽  
Assembled Monolayers ◽  
The One ◽  
Walled Carbon Nanotubes

Single-walled carbon nanotubes (SWNTs) were functionalized by direct fluorination and subsequent reaction with 6-aminohexanoic acid for water-soluble carboxylic acid functionalized SWNTs (AHA-SWNTs). Both of the compounds were used as precursors to attach SWNTs to APTES coated silicon surfaces. AHA-SWNTs in aqueous solution were reacted with APTES self-assembled monolayers (SAMs) with coupling reagents N-(3-dimethylaminopropyl)-N′-ethylcarbodiimide (EDC) and N-hydroxysuccinimide (NHS). The surface coverage is a function of concentration of AHA-SWNTs, solvent and coupling method. While for the fluorinated SWNTs (F-SWNTs), direct addition of F-SWNTs to preformed APTES SAMs at 90 °C shows essentially no reaction, in contrast to the one-pot reaction of F-SWNTs with APTES molecules in the presence of SWNTs on a silicon substrate. This reaction route provides a convenient method to attach SWNTs to silicon surfaces.

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