A normally closed PDMS (polydimethylsiloxane) microvalve
نویسندگان
چکیده
منابع مشابه
Magnetite-doped polydimethylsiloxane (PDMS) for phosphopeptide enrichment.
Reversible phosphorylation plays a key role in numerous biological processes. Mass spectrometry-based approaches are commonly used to analyze protein phosphorylation, but such analysis is challenging, largely due to the low phosphorylation stoichiometry. Hence, a number of phosphopeptide enrichment strategies have been developed, including metal oxide affinity chromatography (MOAC). Here, we de...
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A major technical hurdle in microfluidics is the difficulty in achieving high fidelity lithographic patterning on polydimethylsiloxane (PDMS). Here, we report a simple yet highly precise and repeatable PDMS surface micromachining method using direct photolithography followed by reactive ion etching (RIE). Our method to achieve surface patterning of PDMS applied an O(2) plasma treatment to PDMS ...
متن کاملHigh-density fabrication of normally closed microfluidic valves by patterned deactivation of oxidized polydimethylsiloxane.
The use of polydimethylsiloxane (PDMS) in microfluidic devices is extensive in academic research. One of the most fundamental treatments is to expose PDMS to plasma oxidation in order to render its surface temporarily hydrophilic and capable of permanent bonding. Here, we show that changes in the surface chemistry induced by plasma oxidation can spatially be counteracted very cleanly and reliab...
متن کاملStretchable Metamaterial Absorber Using Liquid Metal-Filled Polydimethylsiloxane (PDMS)
A stretchable metamaterial absorber is proposed in this study. The stretchability was achieved by liquid metal and polydimethylsiloxane (PDMS). To inject liquid metal, microfluidic channels were fabricated using PDMS powers and microfluidic-channel frames, which were built using a three-dimensional printer. A top conductive pattern and ground plane were designed after considering the easy injec...
متن کاملCharacterization of polydimethylsiloxane (PDMS) properties for biomedical micro/nanosystems.
Polydimethylsiloxane (PDMS Sylgard 184, Dow Corning Corporation) pre-polymer was combined with increasing amounts of cross-linker (5.7, 10.0, 14.3, 21.4, and 42.9 wt.%) and designated PDMS1, PDMS2, PDMS3, PDMS4, and PDMS5, respectively. These materials were processed by spin coating and subjected to common micro-fabrication, micro-machining, and biomedical processes: chemical immersion, oxygen ...
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ژورنال
عنوان ژورنال: IEEJ Transactions on Sensors and Micromachines
سال: 2000
ISSN: 1341-8939,1347-5525
DOI: 10.1541/ieejsmas.120.177