Selective etching of PDMS: Etching technique for application as a positive tone resist

Szilasi, S.Z.; Cserháti, Csaba

doi:10.1016/j.apsusc.2018.06.280

Cited by 9 publications

(2 citation statements)

References 34 publications

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“…In areas with absence of photoresist, the glass surface is eroded, thereby generating the microchannel. Finally, the microchannel is sealed with a layer of PDMS [54]. Figure 7A shows a schematic of the etching process.…”

Section: Enzymatic Biosensors Applied To Microfluidic Systemsmentioning

confidence: 99%

Enzyme-Based Electrochemical Biosensors for Microfluidic Platforms to Detect Pharmaceutical Residues in Wastewater

et al. 2019

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Emerging water pollutants such as pharmaceutical contaminants are suspected to induce adverse effects to human health. These molecules became worrisome due to their increasingly high concentrations in surface waters. Despite this alarming situation, available data about actual concentrations in the environment is rather scarce, as it is not commonly monitored or regulated. This is aggravated even further by the absence of portable and reliable methods for their determination in the field. A promising way to tackle these issues is the use of enzyme-based and miniaturized biosensors for their electrochemical detection. Here, we present an overview of the latest developments in amperometric microfluidic biosensors that include, modeling and multiphysics simulation, design, manufacture, testing, and operation methods. Different types of biosensors are described, highlighting those based on oxidases/peroxidases and the integration with microfluidic platforms. Finally, issues regarding the stability of the biosensors and the enzyme molecules are discussed, as well as the most relevant approaches to address these obstacles.

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Section: Enzymatic Biosensors Applied To Microfluidic Systemsmentioning

confidence: 99%

Enzyme-Based Electrochemical Biosensors for Microfluidic Platforms to Detect Pharmaceutical Residues in Wastewater

et al. 2019

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“…Meanwhile, viscoelastic substrate and sacrificial polymer etching could produce various micro/nanostructures for special applications. Szilasi et al conducted an in-depth study of the selective etching of polydimethylsiloxane (PDMS) using potassium hydroxide and sodium hydroxide [28]. Liu et al used soft lithography to obtain PDMS with a rectangular channel as the top layer of the device [29].…”

Section: Introductionmentioning

confidence: 99%

A Facile Approach for Fabricating Microstructured Surface Based on Etched Template by Inkjet Printing Technology

et al. 2018

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Microstructures are playing an important role in manufacturing functional devices, due to their unique properties, such as wettability or flexibility. Recently, various microstructured surfaces have been fabricated to realize functional applications. To achieve the applications, photolithography or printing technology is utilized to produce the microstructures. However, these methods require preparing templates or masks, which are usually complex and expensive. Herein, a facile approach for fabricating microstructured surfaces was studied based on etched template by inkjet printing technology. Precured polydimethylsiloxane substrate was etched by inkjet printing water-soluble polyacrylic acid solution. Then, the polydimethylsiloxane substrate was cured and rinsed, which could be directly used as template for fabricating microstructured surfaces. Surfaces with raised dots, lines, and squares, were facilely obtained using the etched templates by inkjet printing technology. Furthermore, controllable anisotropic wettability was exhibited on the raised line microstructured surface. This work provides a flexible and scalable way to fabricate various microstructured surfaces. It would bring about excellent performance, which could find numerous applications in optoelectronic devices, biological chips, microreactors, wearable products, and related fields.

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A practical and cost-effective method to make permanently bonded acoustofluidic chips reconfigurable

Kuruoğlu

2022

Microfluid Nanofluid

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Selective etching of PDMS: Etching technique for application as a positive tone resist

Cited by 9 publications

References 34 publications

Enzyme-Based Electrochemical Biosensors for Microfluidic Platforms to Detect Pharmaceutical Residues in Wastewater

Enzyme-Based Electrochemical Biosensors for Microfluidic Platforms to Detect Pharmaceutical Residues in Wastewater

A Facile Approach for Fabricating Microstructured Surface Based on Etched Template by Inkjet Printing Technology

A practical and cost-effective method to make permanently bonded acoustofluidic chips reconfigurable

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