Structural, optical, and electrical properties of silver gratings prepared by nanoimprint lithography of nanoparticle ink

McGrath, Fionnuala; Qian, Jing; Gwynne, Kelsey; Kumah, Cindy E.; Daly, Dermot; Hrelescu, Calin; Zhang, Xia; O’Carroll, Deirdre M.; Bradley, A. Louise

doi:10.1016/j.apsusc.2020.147892

Cited by 27 publications

(13 citation statements)

References 24 publications

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“…In 2021, F. McGrath, J. Qian, et al [79] in Ireland proposed a simple method to fabricate silver gratings using silver nanoparticle solutions and nanoimprint lithography and found that gratings in solutions of silver nanoparticles nanoimprinted directly onto glass substrates have similar properties to those produced by thermally evaporating silver on nanoimprinted PMMA. It was confirmed that this solution-based method does not require special equipment and is more cost-effective than the traditional method of NIL used on In 2011, Z. Jian et al [78] in Canada prepared molds with rigid UV-curing properties on elastic poly(dimethylsiloxane) (PDMS) scaffolds using three different methods.…”

Section: Nanoimprintingmentioning

confidence: 99%

The Development Progress of Surface Structure Diffraction Gratings: From Manufacturing Technology to Spectroscopic Applications

Wang

Chen

et al. 2022

Applied Sciences

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The high-precision diffraction grating is an important chromatic dispersion component that has been widely used in many fields, including laser beam combining, chirped pulse compression, spectroscopy, among others. In this paper, we review the development status of reflection and transmission gratings with high diffraction efficiency and high laser-induced damage thresholds, such as metal-film and multilayer-dielectric-film gratings. Then, we review the basic principles and most recent stages in the development of manufacturing techniques, such as mechanical scribing, holographic exposure, electron-beam lithography, and nanoimprinting.

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Section: Nanoimprintingmentioning

confidence: 99%

The Development Progress of Surface Structure Diffraction Gratings: From Manufacturing Technology to Spectroscopic Applications

Wang

Chen

et al. 2022

Applied Sciences

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“…11 Nanoimprinting combined with self-assembly provides an efficient 2-step route to grids of sub-micron metal lines. [12][13][14][15][16][17][18] Dispersions of metallic nanocolloids (colloidal inks) can be imprinted under ambient conditions in a roll-to-roll compatible process with a patterned polymer stamp that is being rolled over the substrate. 19,20 The colloidal ink is conned in the stamps' cavities and the solvent permeates through the polymer.…”

Section: Introductionmentioning

confidence: 99%

Flexible and transparent electrodes imprinted from metal nanostructures: morphology and opto-electronic performance

2022

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“…Screen-printing of these conductive inks has been of particular interest owing to the techniques’ ease of fabrication and low cost. In contrast to other traditional fabrication routes that use conductive inks such as nanoimprint lithography 10 , 11 , and inkjet printing 12 – 14 screen-printing allows for rapid fabrication and easy design customization, thus attracting a lot of attention 15 , 16 . Typically, these printed sensors interface directly with the user’s skin to acquire the required readings.…”

Section: Introductionmentioning

confidence: 99%

Bio-acceptability of wearable sensors: a mechanistic study towards evaluating ionic leaching induced cellular inflammation

Bhushan

Kamat

Abrol

et al. 2022

Sci Rep

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The recent need for remote health wellness monitoring has led to the extensive use of wearable sensors. Owing to their increased use, these sensors are required to exhibit both functionality and safety to the user. A major component in the fabrication of these sensors and their associated circuitry is the use of metallic/organic conductive inks. However, very less is known about the interfacial and molecular interactions of these inks with biological matter as they can result in an inflammatory reaction to the user. Significant efforts are thus needed to explore and improve the bio-acceptability of such conductive ink-based wearable sensors. The present study investigates the biocompatibility of encapsulated and non-encapsulated wearable electrochemical sensors used for sensing uric acid as a biomarker for wound healing fabricated using screen-printing technique. Ionic release of metallic ions was investigated first to understand the susceptibility of the conductive inks towards ionic leaching when in contact with a fluid. Time-lapse investigation using ICPS (inductive couple plasma spectroscopy) shows a high concentration (607.31 ppb) of leached silver (Ag+) ions from the non-encapsulated sensors. The cell viability data suggests a 2.5-fold improvement in the sensor biocompatibility for an encapsulated sensor. While the carbon ink shows negligible effect on cell viability, the silver ink elicits significant decrease (< 50%) in cell viability at concentrations higher than 2 mg ml-1. The toxicity pathway of these sensors was further determined to be through the generation of reactive oxygen species resulting in over 20% apoptotic cell death. Our results show that the lower biocompatibility of the non-encapsulated sensor attributes to the higher leaching of Ag+ ions from the printed inks which elicits several different inflammatory pathways. This work highlights the importance biocompatibility evaluation of the material used in sensor fabrication to develop safe and sustainable sensors for long-term applications.

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Structural, optical, and electrical properties of silver gratings prepared by nanoimprint lithography of nanoparticle ink

Cited by 27 publications

References 24 publications

The Development Progress of Surface Structure Diffraction Gratings: From Manufacturing Technology to Spectroscopic Applications

The Development Progress of Surface Structure Diffraction Gratings: From Manufacturing Technology to Spectroscopic Applications

Flexible and transparent electrodes imprinted from metal nanostructures: morphology and opto-electronic performance

Bio-acceptability of wearable sensors: a mechanistic study towards evaluating ionic leaching induced cellular inflammation

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