Laser-induced fabrication of gold nanoparticles onto paper substrates and their application on paper-based electroanalytical devices

Arantes, Iana V. S.; Ataide, Vanessa N.; Ameku, Wilson A.; Gongoni, Juliana L. M.; Selva, Jéssica S. G.; Nogueira, Helton P.; Bertotti, Mauro; Paixão, Thiago R.L.C.

doi:10.1039/d2sd00176d

Cited by 6 publications

(13 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Nyquist plots for both the experimental and fitted data are shown in Figure 5. While the calculated R CT (52 � 1 Ω) was only slightly lower than that reported by Gongoni (60 Ω, also using Au), [9] the value is significantly lower than that reported for other paper-derived sensors, including those reported by Bhattacharya (828 Ω), [48] Arantes (110 � 40 Ω), [28] or Ayres (105 � 3 Ω). [20] The results also agree with an increase of the peak current (for experiments obtained under comparable conditions) from 48.5 μA [28] to 312 μA, a 6-fold improvement for electrodes with similar dimensions.…”

Section: Electrochemical Characterization Of the Au-modified Carbon E...mentioning

confidence: 65%

“…The electrodes were fabricated on sheets of kraft cardboard of 50 points (thickness), a thick and widely available material. [8,9,28,34] The sheets were first immersed in a 1 mol L À [1] sodium borate solution for 10 minutes to minimize the ablation of the carbonized material during the laser scribing process. This step was implemented because borate is a well-known flame retardant that, upon exposure to heat, it forms a glassy coating on the surface that excludes oxygen, [35] and behaves as a chemical heat sink.…”

Section: Fabrication Of the Sensormentioning

confidence: 99%

“…[9] When optimizing the scribing parameters, the goal was to determine the optimal energy delivered to the substrate, considering that optimizing the amount of energy delivered to cellulose substrates would lead to systematic decreases of the resistance of the resulted carbon. [24,27,28,34,41] At low energies, poor carbonization of the cellulose takes place, leading to high resistance (> 300 Ω) of the electrodes. However, at exceedingly high energies, substantial ablation of the materials occurs.…”

Section: Sensor Fabricationmentioning

confidence: 99%

“…This aspect is particularly relevant, as decreasing the electrodes' resistance via the incorporation of metallic nanoparticles is expected to significantly improve the electrochemical behavior of the resulting sensors. [20,28,42,43] Thus, gold was selected as the best material because it produced the lowest electrode resistance while opening the door for other analytical applications. [44,45] Thus, all electrochemical experiments described below were performed using Au-modified carbon electrodes and were all produced by the laser scribing method.…”

Section: Characterization Of the Nanoparticle-modified Carbon Electrodesmentioning

confidence: 99%

“…Importantly, laser scribing can be applied to multiple materials, [24,25] enabling surface modifications [17,26] and in-situ nanoparticle synthesis. [27][28][29] As such, it can rapidly produce nanoparticles circumventing issues (size distribution, co-reactant use, purification, etc.) associated with electrochemical deposition, [30] or traditional bench-top production.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Au‐Modified Carbon Electrodes Produced by Laser Scribing for Electrochemical Analysis of Probiotic Activity

Gongoni,

Chumanov,

Paixão

et al. 2023

Analysis & Sensing

Self Cite

View full text Add to dashboard Cite

A simple and fast (<15 min), two‐step laser scribing of cardboard substrates is described as a method for fabricating carbon electrodes modified with metallic nanoparticles. The first scribing step patterned a cardboard substrate (promoting the formation of porous carbon electrodes). The second step was included to produce metallic nanoparticles via a chemical reduction process of cations from an aqueous solution. For these experiments, the effects of copper, silver, nickel, cobalt, zinc, and gold were evaluated considering their effect on the electrical properties and the composition of the carbon materials produced. These experiments revealed that, despite significant changes in resistance (from 138±7 Ω for plain electrodes to just 53±3 Ω for Au‐modified electrodes), only marginal changes were observed in the morphology or composition of the material produced (IG/ID ranged from 1.2±0.3 for the plain cardboard to 1.8±0.3 for the cobalt‐modified electrodes). To demonstrate the applicability of the proposed strategy, Au‐modified electrodes were assembled into electrochemical sensors and applied to measure the metabolic activity of live microorganisms in various commercial samples, requiring only 100 μL of sample and 10 min of incubation time.

show abstract

Section: Electrochemical Characterization Of the Au-modified Carbon E...mentioning

confidence: 65%

Section: Fabrication Of the Sensormentioning

confidence: 99%

Section: Sensor Fabricationmentioning

confidence: 99%

Section: Characterization Of the Nanoparticle-modified Carbon Electrodesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Au‐Modified Carbon Electrodes Produced by Laser Scribing for Electrochemical Analysis of Probiotic Activity

Gongoni,

Chumanov,

Paixão

et al. 2023

Analysis & Sensing

Self Cite

View full text Add to dashboard Cite

show abstract

Green, Biodegradable, and Flexible Resistive Heaters‐Based Upon a Novel Laser‐Induced Graphene Manufacturing Process

Morais,

Vieira,

Ozório

et al. 2024

Advanced Sustainable Systems

View full text Add to dashboard Cite

Laser induced graphene (LIG), prepared directly with an in situ synthesis method onto Kraft Paper substrates, is proposed for the manufacture of biodegradable electronic devices. The investigation explores the influence of laser power and scanning speed on the properties of LIG conductive tracks and a sheet resistance of up to 0.25 kΩ sq−1. Raman spectroscopy and microscopy is used to analyse the interfacial properties, in particular the transition of cellulose fibers to carbonized graphene flakes through photothermal pyrolysis, leading to the formation of coral‐like structures. To demonstrate the applicability of the approach, flexible resistive heaters have been manufactured and tests show rapid heating with a homogeneous distribution and a maximum temperature of 145.5 °C. Additionally, an electro‐thermal conversion efficiency (hr+c) of 17.05 mW (°C cm2)−1 is achieved. Finally, a comparative Life Cycle Assessment with FR‐4 based electronics has been undertaken and the environmental impacts are calculated. The impact assessment shows a two magnitude lower impact on the environment for most categories, which suggests the approach is beneficial for the environment at a global production level. The results show that the photothermal pyrolysis of Kraft paper using a laser diode allows for low‐impact devices flexible and green electronics products.

show abstract

Electrochemical Paper‐Based Microfluidics: Harnessing Capillary Flow for Advanced Diagnostics

Bezinge,

Shih,

Richards

et al. 2024

Small

View full text Add to dashboard Cite

Electrochemical paper‐based microfluidics has attracted much attention due to the promise of transforming point‐of‐care diagnostics by facilitating quantitative analysis with low‐cost and portable analyzers. Such devices harness capillary flow to transport samples and reagents, enabling bioassays to be executed passively. Despite exciting demonstrations of capillary‐driven electrochemical tests, conventional methods for fabricating electrodes on paper impede capillary flow, limit fluidic pathways, and constrain accessible device architectures. This account reviews recent developments in paper‐based electroanalytical devices and offers perspective by revisiting key milestones in lateral flow tests and paper‐based microfluidics engineering. The study highlights the benefits associated with electrochemical sensing and discusses how the detection modality can be leveraged to unlock novel functionalities. Particular focus is given to electrofluidic platforms that embed electrodes into paper for enhanced biosensing applications. Together, these innovations pave the way for diagnostic technologies that offer portability, quantitative analysis, and seamless integration with digital healthcare, all without compromising the simplicity of commercially available rapid diagnostic tests.

show abstract

Laser-induced fabrication of gold nanoparticles onto paper substrates and their application on paper-based electroanalytical devices

Abstract: A novel and quick (sub-minute) method for synthesizing gold nanoparticles (AuNPs) over electrochemical paper-based devices (ePAD) using a CO2 laser is presented. The ePAD, fabricated by laser-scribing carbonization of kraft...

Cited by 6 publications

References 47 publications

Au‐Modified Carbon Electrodes Produced by Laser Scribing for Electrochemical Analysis of Probiotic Activity

Au‐Modified Carbon Electrodes Produced by Laser Scribing for Electrochemical Analysis of Probiotic Activity

Green, Biodegradable, and Flexible Resistive Heaters‐Based Upon a Novel Laser‐Induced Graphene Manufacturing Process

Electrochemical Paper‐Based Microfluidics: Harnessing Capillary Flow for Advanced Diagnostics

Contact Info

Product

Resources

About