Spray‐Layer‐by‐Layer Carbon Nanotube/Electrospun Fiber Electrodes for Flexible Chemiresistive Sensor Applications

Saetia, Kittipong; Schnorr, Jan M.; Mannarino, Matthew M.; Kim, Sung Yeol; Rutledge, Gregory C.; Swager, Timothy M.; Hammond, Paula T.

doi:10.1002/adfm.201302344

Cited by 155 publications

(98 citation statements)

References 47 publications

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“…Although the detection schemes of physical sensors vary widely from mechanical to optical principles 61 , the electrical detection scheme is widely adopted owing to its high sensitivity and Emerging flexible and wearable physical sensing platforms for healthcare and biomedical applications. Flexible physical sensors comprise two distinct building blocks, that is, the flexible template materials and the active sensing elements, which may take either solid or liquid form.…”

Section: Flexible and Stretchable Sensor Materials And Fabrication Sementioning

confidence: 99%

“…Emerging applications of flexible and wearable sensors in the healthcare and biomedical fields include artificial electronic skins, physiological monitoring and assessment systems, and therapeutic and drug delivery platforms. Among these advanced materials, inorganic materials in the form of nanofibers or nanowires are being extensively investigated as alternatives owing to their sensitivity and ease of assembly on unconventional materials 3,32,37,61 . Carbon-based nanomaterials, for example, offer superior sensitivity owing to their remarkable electrical and mechanical properties 29,[62][63][64][65] .…”

Section: Flexible and Stretchable Sensor Materials And Fabrication Sementioning

confidence: 99%

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Emerging flexible and wearable physical sensing platforms for healthcare and biomedical applications

2016

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There are now numerous emerging flexible and wearable sensing technologies that can perform a myriad of physical and physiological measurements. Rapid advances in developing and implementing such sensors in the last several years have demonstrated the growing significance and potential utility of this unique class of sensing platforms. Applications include wearable consumer electronics, soft robotics, medical prosthetics, electronic skin, and health monitoring. In this review, we provide a state-ofthe-art overview of the emerging flexible and wearable sensing platforms for healthcare and biomedical applications. We first introduce the selection of flexible and stretchable materials and the fabrication of sensors based on these materials. We then compare the different solid-state and liquid-state physical sensing platforms and examine the mechanical deformation-based working mechanisms of these sensors. We also highlight some of the exciting applications of flexible and wearable physical sensors in emerging healthcare and biomedical applications, in particular for artificial electronic skins, physiological health monitoring and assessment, and therapeutic and drug delivery. Finally, we conclude this review by offering some insight into the challenges and opportunities facing this field.

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Section: Flexible and Stretchable Sensor Materials And Fabrication Sementioning

confidence: 99%

Section: Flexible and Stretchable Sensor Materials And Fabrication Sementioning

confidence: 99%

Emerging flexible and wearable physical sensing platforms for healthcare and biomedical applications

2016

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“…Till date, several reports have been published on various approaches to assemble enzymes on the anodes in BFCs utilizing carbon based materials. [1][2][3][4] Amongst those layerby-layer (LbL) assembly technique via electrostatic interactions of oppositely charged species has emerged as a very attractive way to construct multilayer films of polyelectrolytes, biomolecules, 5 and organic materials [6][7][8] offering advantages in various fields, such as surface functionalization, 9,10 drug delivery, 11,12 and biosensing. [13][14][15] Its application was considered plausible in the development of amperometric biosensors initiating vast research activities on biosensors comprised of LbL organized multilayers.…”

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confidence: 99%

Layer-by-Layer Assembly of Carbon Nanotubes Modified with Invertase/Glucose Dehydrogenase Cascade for Sucrose/O₂Biofuel Cell

Zhang

Arugula

Williams

et al. 2016

J. Electrochem. Soc.

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A layer-by-layer (LbL) assembly technique was employed to modify glassy carbon electrodes (GCEs) and screen printed electrodes (SPEs) utilizing multiwalled carbon nanotubes (MWCNTs)/polyelectrolyte binary composites and an enzyme cascade to facilitate efficient electron transfer in sucrose/O 2 biofuel cell. In this study, MWCNTs immobilized invertase (INV) and glucose dehydrogenase (GDH) were alternatively assembled upon polyethyleneimine (PEI) and DNA nanocomposites to construct a bioanode.[Ni(phendion)(phen)]Cl 2 complex and methylene green (MG) were investigated as redox mediators for electrocatalytic oxidation of NADH at reduced overpotentials. The LbL architecture showed advantages for sequential enzymatic reaction that favored the efficient penetration of substrate and products in a cascade system while MWCNTs facilitated the efficient electron transfer from sucrose oxidation and enhancement of the current density. With a GCE bioanode modified with a MG or Ni complex, the biofuel cell produced a higher power density (μW/cm 2 ) with 145.8% and 130.11% enhancement comparing to a SPE bioanode, respectively. Moreover, the Ni complex modified GCEs and SPEs produced power densities (μW/cm 2 ) 93.7% and 107.0% higher compared to MG modified bioanodes, respectively. The maximum current density of 1400 ± 46 μA/cm 2 was obtained with the Ni complex on GCE at an OCP of 604 ± 17 mV with a maximum power density of 405 ± 6 μW/cm 2 . The LbL assembly showed great feasibility as a simple and efficient way to construct controlled MWCNT-multi-enzyme modified electrodes for biofuel cell applications. Biofuel cells convert the chemical energy of biofuels into electric energy via the enzymatically catalyzed oxidation and reduction reactions. One of the most important factors affecting the performance of fuel cell is the fabrication of bioanode which has great influence in generation of electrical power outputs. Therefore developing effective bioanodes remains critical. Till date, several reports have been published on various approaches to assemble enzymes on the anodes in BFCs utilizing carbon based materials.1-4 Amongst those layerby-layer (LbL) assembly technique via electrostatic interactions of oppositely charged species has emerged as a very attractive way to construct multilayer films of polyelectrolytes, biomolecules, 5 and organic materials 6-8 offering advantages in various fields, such as surface functionalization, 9,10 drug delivery, 11,12 and biosensing. [13][14][15] Its application was considered plausible in the development of amperometric biosensors initiating vast research activities on biosensors comprised of LbL organized multilayers. LbL nanostructures decorated with multi-enzymes were proven to be one of the successful strategies to establish high electrical performance, long-term stability and long lifetime in bioelectronics devices.14,16-18 For example, LbL structures consisting of Au nanoparticles (AuNPs), thiol-functionalized polyaniline and glucose oxidase (GOx) were fabricated for glucose biosensing ...

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“…In addition to the higher surface area of the CuO nanotube sensor, it can also double the Debye length (about 3∼23 nm for CuO) due to the increased surfaces existing both inside and outside of the nanotubes, resulting in improved sensing [16][17][18].…”

Section: Resultsmentioning

confidence: 99%

H₂S Gas Sensing Properties of CuO Nanotubes

Kang¹,

Park²

2014

Applied Science and Convergence Technology

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CuO nanotubes are synthesized using TeO 2 nanorod templates for application to H 2 S gas sensors. TeO 2 nanorod templates were synthesized by using the VS method through thermal evaporation. Scanning electron microscopy, transmission electron microscopy and X-ray diffraction showed that the synthesized nanotubes were monoclinic-structured polycrystalline CuO with diameter and wall thickness of approximately 100∼300 nm and 5∼10 nm, respectively. The CuO nanotube sensor showed responses of 136∼325% for the H 2 S concentration of 0.1∼5 ppm at room temperature. These response values are approximately twice as high as that of the CuO nanowire sensor for the same concentrations of H 2 S gas.Along with the investigation of the performance of the sensors, the mechanisms of H 2 S gas sensing of the CuO nanotubes are also discussed in this study.

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Spray‐Layer‐by‐Layer Carbon Nanotube/Electrospun Fiber Electrodes for Flexible Chemiresistive Sensor Applications

Abstract: The authors wish to dedicate this paper to the memory of Officer Sean Collier for his caring service to the MIT community and for his sacrifice.

Cited by 155 publications

References 47 publications

Emerging flexible and wearable physical sensing platforms for healthcare and biomedical applications

Emerging flexible and wearable physical sensing platforms for healthcare and biomedical applications

Layer-by-Layer Assembly of Carbon Nanotubes Modified with Invertase/Glucose Dehydrogenase Cascade for Sucrose/O₂Biofuel Cell

H₂S Gas Sensing Properties of CuO Nanotubes

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Spray‐Layer‐by‐Layer Carbon Nanotube/Electrospun Fiber Electrodes for Flexible Chemiresistive Sensor Applications

Abstract: The authors wish to dedicate this paper to the memory of Officer Sean Collier for his caring service to the MIT community and for his sacrifice.

Cited by 155 publications

References 47 publications

Emerging flexible and wearable physical sensing platforms for healthcare and biomedical applications

Emerging flexible and wearable physical sensing platforms for healthcare and biomedical applications

Layer-by-Layer Assembly of Carbon Nanotubes Modified with Invertase/Glucose Dehydrogenase Cascade for Sucrose/O2Biofuel Cell

H2S Gas Sensing Properties of CuO Nanotubes

Contact Info

Product

Resources

About

Layer-by-Layer Assembly of Carbon Nanotubes Modified with Invertase/Glucose Dehydrogenase Cascade for Sucrose/O₂Biofuel Cell

H₂S Gas Sensing Properties of CuO Nanotubes