Laser ablation assisted micropattern screen printed transduction electrodes for sensing applications

Rehmani, Muhammad Asif Ali; Lal, Kartikay; Shaukat, A.; Arif, Khalid Mahmood

doi:10.1038/s41598-022-10878-6

Cited by 9 publications

(2 citation statements)

References 49 publications

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“…The most commonly employed pattern is a parallel comb-like structure, referred to as an interdigitated geometrical pattern. However, there are other geometric patterns that can be used in sensing applications, whose performances were evaluated in our previous work [ 19 ]. The working principle of planar electrodes involves the generation of an electric field when a low-amplitude AC signal is applied across two electrodes.…”

Section: Electrochemical Methodsmentioning

confidence: 99%

Electrochemical and Optical Sensors for Real-Time Detection of Nitrate in Water

Lal

Jaywant

Arif

2023

Sensors

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The health and integrity of our water sources are vital for the existence of all forms of life. However, with the growth in population and anthropogenic activities, the quality of water is being impacted globally, particularly due to a widespread problem of nitrate contamination that poses numerous health risks. To address this issue, investigations into various detection methods for the development of in situ real-time monitoring devices have attracted the attention of many researchers. Among the most prominent detection methods are chromatography, colorimetry, electrochemistry, and spectroscopy. While all these methods have their pros and cons, electrochemical and optical methods have emerged as robust and efficient techniques that offer cost-effective, accurate, sensitive, and reliable measurements. This review provides an overview of techniques that are ideal for field-deployable nitrate sensing applications, with an emphasis on electrochemical and optical detection methods. It discusses the underlying principles, recent advances, and various measurement techniques. Additionally, the review explores the current developments in real-time nitrate sensors and discusses the challenges of real-time implementation.

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Section: Electrochemical Methodsmentioning

confidence: 99%

Electrochemical and Optical Sensors for Real-Time Detection of Nitrate in Water

Lal

Jaywant

Arif

2023

Sensors

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“…1,2,3 . Firstly, the dynamically growing field of MEMS and small robotics can benefit from a manufacturing method of producing electrodes and conductive traces that can be effectively adapted to various designs 4 . Secondly, a method that is capable of micropatterning electrodes on top of complex geometries is essential for many biomimetic or topologically optimized designs of MEMS and small robotics 5 .…”

Section: Introductionmentioning

confidence: 99%

Hydrophilic surface morphology for intricate conductive coatings

Stark¹,

Sikulskyi²,

Govindarajan³

et al. 2023

Surface Engineering and Forensics

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Conductive surfaces and patterns are at the forefront of electronics research with a need to go smaller and create more intricate electronic designs and devices while still maintaining easy manufacturability. This paper investigates an approach of patterning conductive traces for microsize electrically driven devices with the focus on enabling and patterning complicated geometries. The approach includes the design and fabrication of hydrophilic microstructures along the channels with hydrophobic borders on devices' surfaces. The channels are connected to larger electrodes outside the device. When a conductive solution is applied to the outside electrode area, hydrophilic morphologies stimulate the solution to feed along the channels and fill the predesigned patterns. Therefore, the major objective of this study is to explore different designs of microstructures to increase surface hydrophilicity for liquid electrode patterning for variously oriented surfaces. Due to numerous physical forces, material domains, and interactions involved, experimental approach is selected to study the method of surface electrode micropatterning through wetting. Microstructured surfaces are fabricated using the two-photon polymerization 3D printing technique due to its superior resolution. Analysis of various morphologies is completed, a microsize electromechanical device with selected hydrophilic morphologies is fabricated, patterned with liquid electrode, and tested. The findings in this paper further the development of electrode patterning and help determine which hydrophilic microstructures show superior patterning ability along horizontal and vertical vectors.

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Laser‐Induced Shockwaves as a Rapid and Non‐Contact Technique for 2D Patterning of Colloidal Monolayer Crystals

Nguyen,

Park,

Park

et al. 2024

Adv Materials Inter

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A novel approach is reported that harnesses laser‐induced shockwave spallation technique to selectively remove clusters of polystyrene (PS) microspheres from close‐packed monolayers for the creation of 2D colloidal micropatterns. The strategic design of the layer structure by incorporating a thin layer of poly(vinyl alcohol) (PVA) on top of the PS monolayer enables the complete delamination of PS particle clusters. Its use is demonstrated for creating different sizes of circular microscale spallation patterns by regulating the tensile force of the shockwave with laser fluence adjustments. To further control the diameter of the spallation pattern, various shadow masks are utilized to tune the shockwave generation region. The finding reveals that both PVA thickness and spallation force play key roles in adjusting cluster spallation size with complete removal. The study highlights the potential of laser spallation techniques as a rapid and non‐contact method for 2D colloidal crystal patterning by leveraging spatially regulated shockwave spallation forces.

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Laser ablation assisted micropattern screen printed transduction electrodes for sensing applications

Cited by 9 publications

References 49 publications

Electrochemical and Optical Sensors for Real-Time Detection of Nitrate in Water

Electrochemical and Optical Sensors for Real-Time Detection of Nitrate in Water

Hydrophilic surface morphology for intricate conductive coatings

Laser‐Induced Shockwaves as a Rapid and Non‐Contact Technique for 2D Patterning of Colloidal Monolayer Crystals

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