Hierarchically Assembled Two‐dimensional Hybrid Nanointerfaces: A Platform for Bioelectronic Applications

Kumari, Renu; Osikoya, Adeniyi Olugbenga; Anku, William Wilson; Shukla, Sudheesh K.; Govender, Penny Poomani

doi:10.1002/elan.201800338

Cited by 15 publications

(6 citation statements)

References 49 publications

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“…The estimated zeta potentials of AuNPs, GO, and GO-AuNPs were −15.43 ± 2.73, −41.87 ± 0.87, and −30.53 ± 1.36 mV, respectively. The average zeta potential of GO-AuNPs was less negatively charged (−30.53 ± 1.36 mV) than GO (−41.87 ± 0.87 mV), due to the coverage of AuNPs prepared from in situ reduction on the GO surface [ 31 ]. The size, shape, and distribution of GO-AuNPs examined by TEM showed that the spherical AuNPs were randomly distributed and localized on the surface of GO sheets with a diameter of 15.6 ± 1.3 nm, and morphological deformation was not evident ( Figure 1 c).…”

Section: Resultsmentioning

confidence: 99%

Effects of Graphene Oxide-Gold Nanoparticles Nanocomposite on Highly Sensitive Foot-and-Mouth Disease Virus Detection

Kim

Lee

et al. 2020

Nanomaterials

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The polymerase chain reaction (PCR) has become a powerful molecular diagnostic technique over the past few decades, but remains somewhat impaired due to low specificity, poor sensitivity, and false positive results. Metal and carbon nanomaterials, quantum dots, and metal oxides, can improve the quality and productivity of PCR assays. Here, we describe the ability of PCR assisted with nanomaterials (nano-PCR) comprising a nanocomposite of graphene oxide (GO) and gold nanoparticles (AuNPs) for sensitive detection of the foot-and-mouth disease virus (FMDV). Graphene oxide and AuNPs have been widely applied as biomedical materials for diagnosis, therapy, and drug delivery due to their unique chemical and physical properties. Foot-and-mouth disease (FMD) is highly contagious and fatal for cloven-hoofed animals including pigs, and it can thus seriously damage the swine industry. Therefore, a highly sensitive, specific, and practical method is needed to detect FMDV. The detection limit of real-time PCR improved by ~1000 fold when assisted by GO-AuNPs. We also designed a system of detecting serotypes in a single assay based on melting temperatures. Our sensitive and specific nano-PCR system can be applied to diagnose early FMDV infection, and thus may prove to be useful for clinical and biomedical applications.

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Section: Resultsmentioning

confidence: 99%

Effects of Graphene Oxide-Gold Nanoparticles Nanocomposite on Highly Sensitive Foot-and-Mouth Disease Virus Detection

Kim

Lee

et al. 2020

Nanomaterials

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“…Further, from the Rct values from Fig. 4(e), it can be clearly understood that with a smaller linear part, the electrode with enzyme, MWCNT, and mediator has lesser diffusion resistance with improved electron transfer kinetics [34].…”

Section: B Bioelectrocatalytic Analysis Of Bioelectrodesmentioning

confidence: 86%

Patch-Type Wearable Enzymatic Lactate Biofuel Cell With Carbon Cloth Bioelectrodes for Energy Harvesting From Human Sweat

Jayapiriya

Goel

2022

IEEE Flex. Electron.

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Enzyme-powered biofuel cells (EBFCs) are one of the most possible power sources for wearable microelectronic devices because of their small size and specificity of enzymes. The optimum realization of these energy sources becomes possible by fabricating biocompatible, flexible, and environment-friendly electrode materials with high active sites. Nanomaterials, with enhanced surface area, fulfill the above necessities and are used in a variety of applications. In this work, a novel membraneless enzymatic biofuel cell utilizing carbon nanotubes coated carbon cloth (CC) as bioelectrodes is presented. The bioelectrodes were integrated onto an article substrate to develop an economical and disposable patch-type wearable EBFC (W-EBFC). Such W-EBFC is designed which can deliver a power density of 132 and 104 µW/cm 2 , with a stable voltage in 8-mM lactate concentration and real samples of human sweat, respectively. The results reflect that CC-based bioelectrodes-based biofuel cells have enormous potential to be a good energy source for wearable biomedical applications.

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“…At higher frequencies, semi-circular part diameter is equal to the electron transfer resistance (Rct) in the biofuel cell (Bandapati et al 2017). Rct is a measure of the interfacial electron transfer rate between the immobilized biocatalyst and the electrode surface of the EBFC (Kumari et al 2018). It was found that, bioelectrode with plain, 2, 4, 6, 8 comb-like structures exhibited Rct of 12 KΩ ,8.7 KΩ, 7.3 KΩ, 5.7 KΩ, 2.6 KΩ respectively.…”

Section: Number Of Comb Partitionsmentioning

confidence: 99%

Additively Manufactured Microfluidic Enzymatic Biofuel Cell with Comb -like Bioelectrodes

Sivakumar

Goel

2021

Preprint

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3D printing is a growing processing technology, which offers manufacturing of tailored, portable and integrable electrochemical energy harvesting device for realising next generation bioelectronics devices. Enzymatic biofuel cells (EBFCs) associated with biocatalysis uses biofriendly alternatives for energy harvesting. Also at microscale, the precision design and assembling of the bioelectrodes are complex procedures. The combination of computer-assisted design and 3D printing has enabled the realization of customized electrochemical miniaturized devices for various applications. In this work, a completely 3D printed EBFC at a micro level configuration, names as 3D-µEBFC, integrated with new precise bioelectrode configuration has been demonstrated. The 3D-µEBFC consists of bioelectrode with comb-like structures with carbon black which helps in increasing the active surface to volume ratio available for electrocatalysis by 80 times higher than plain electrodes. This micro-device produced an output power density of 13 µW/cm2 with an open circuit voltage of 570 mV. The 3D printed bioelectrodes show high stability, which may transform the fabrication methodology by decreasing production costs and time, letting the development of complex-shaped and purely 3D printed micro-devices.

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Hierarchically Assembled Two‐dimensional Hybrid Nanointerfaces: A Platform for Bioelectronic Applications

Cited by 15 publications

References 49 publications

Effects of Graphene Oxide-Gold Nanoparticles Nanocomposite on Highly Sensitive Foot-and-Mouth Disease Virus Detection

Effects of Graphene Oxide-Gold Nanoparticles Nanocomposite on Highly Sensitive Foot-and-Mouth Disease Virus Detection

Patch-Type Wearable Enzymatic Lactate Biofuel Cell With Carbon Cloth Bioelectrodes for Energy Harvesting From Human Sweat

Additively Manufactured Microfluidic Enzymatic Biofuel Cell with Comb -like Bioelectrodes

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