Rapid fabrication of microfluidic PDMS devices from reusable PDMS molds using laser ablation

Işıksaçan, Ziya; Güler, Mustafa Tahsin; Aydogdu, Berkan; Bilican, İsmail; Elbüken, Çağlar

doi:10.1088/0960-1317/26/3/035008

Cited by 83 publications

(60 citation statements)

References 30 publications

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“…This is realized by special methods such as thermal evaporation, electro- deposition, e-beam evaporation, sputtering, patterning the metal (lithography), spin coating and ultraviolet exposure. Recently, microfluidic channels have been built by laser ablation [15,16] and a three-dimensional (3D) printer [17,18]. …”

Section: Introductionmentioning

confidence: 99%

Stretchable Complementary Split Ring Resonator (CSRR)-Based Radio Frequency (RF) Sensor for Strain Direction and Level Detection

Eom

Lim

2016

Sensors

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In this paper, we proposed a stretchable radio frequency (RF) sensor to detect strain direction and level. The stretchable sensor is composed of two complementary split ring resonators (CSRR) with microfluidic channels. In order to achieve stretchability, liquid metal (eutectic gallium-indium, EGaIn) and Ecoflex substrate are used. Microfluidic channels are built by Ecoflex elastomer and microfluidic channel frames. A three-dimensional (3D) printer is used for fabrication of microfluidic channel frames. Two CSRR resonators are designed to resonate 2.03 GHz and 3.68 GHz. When the proposed sensor is stretched from 0 to 8 mm along the +x direction, the resonant frequency is shifted from 3.68 GHz to 3.13 GHz. When the proposed sensor is stretched from 0 to 8 mm along the −x direction, the resonant frequency is shifted from 2.03 GHz to 1.78 GHz. Therefore, we can detect stretched length and direction from independent variation of two resonant frequencies.

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Section: Introductionmentioning

confidence: 99%

Stretchable Complementary Split Ring Resonator (CSRR)-Based Radio Frequency (RF) Sensor for Strain Direction and Level Detection

Eom

Lim

2016

Sensors

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“…The PDMS chip was fabricated based on a modified version of a rapid fabrication method recently reported (Isiksacan et al 2016b). Firstly, the patterns were drawn using a CAD software (Autodesk, AutoCAD 2016).…”

Section: Microfluidic Chip Fabricationmentioning

confidence: 99%

A microfluidic erythrocyte sedimentation rate analyzer using rouleaux formation kinetics

Işıksaçan

Asghari

Elbüken

2017

Microfluid Nanofluid

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“…Conventional fabrication of microfluidic devices requires time‐consuming, laborious, and high‐cost soft photolithography . Direct laser ablation has been proposed as an alternative approach to fabricate microstructures on polymer surfaces .…”

Section: Introductionmentioning

confidence: 99%

Microfluidic Contact Lenses

Jiang

Montelongo

Butt

et al. 2018

Small

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Contact lens is a ubiquitous technology used for vision correction and cosmetics. Sensing in contact lenses has emerged as a potential platform for minimally invasive point-of-care diagnostics. Here, a microlithography method is developed to fabricate microconcavities and microchannels in a hydrogel-based contact lens via a combination of laser patterning and embedded templating. Optical microlithography parameters influencing the formation of microconcavities including ablation power (4.3 W) and beam speed (50 mm s ) are optimized to control the microconcavity depth (100 µm) and diameter (1.5 mm). The fiber templating method allows the production of microchannels having a diameter range of 100-150 µm. Leak-proof microchannel and microconcavity connections in contact lenses are validated through flow testing of artificial tear containing fluorescent microbeads (Ø = 1-2 µm). The microconcavities of contact lenses are functionalized with multiplexed fluorophores (2 µL) to demonstrate optical excitation and emission capability within the visible spectrum. The fabricated microfluidic contact lenses may have applications in ophthalmic monitoring of metabolic disorders at point-of-care settings and controlled drug release for therapeutics.

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Rapid fabrication of microfluidic PDMS devices from reusable PDMS molds using laser ablation

Abstract: View the article online for updates and enhancements. Related content Rapid cell-patterning and microfluidic chip fabrication on glass Meng-Hua Yen, Ji-Yen Cheng, Cheng-Wey Wei et al.

Cited by 83 publications

References 30 publications

Stretchable Complementary Split Ring Resonator (CSRR)-Based Radio Frequency (RF) Sensor for Strain Direction and Level Detection

Stretchable Complementary Split Ring Resonator (CSRR)-Based Radio Frequency (RF) Sensor for Strain Direction and Level Detection

A microfluidic erythrocyte sedimentation rate analyzer using rouleaux formation kinetics

Microfluidic Contact Lenses

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