This paper focuses on studying the rheological properties of polydimethylsiloxane (PDMS). polymer has been used to fabricate membranes and filters in engineering. The analysis this is required for a further investigation its mechanical behavior. In study, behavior PDMS reported at different temperatures. showed steady shear viscosity during short duration. However, changed with time increased m...

This work uses a method based on indentation to characterize a polydimethylsiloxane (PDMS) elastomer submerged in an organic solvent (decane, heptane, pentane, or cyclohexane). An indenter is pressed into a disk of a swollen elastomer to a fixed depth, and the force on the indenter is recorded as a function of time. By examining how the relaxation time scales with the radius of contact, one can...

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...

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 ...

We present a method for high fidelity lithographic patterning on polydimethylsiloxane (PDMS) surfaces employing traditional cleanroom equipment and commercially available materials that overcomes previous problems in PDMS processing. To illustrate this method, an electrostatically actuated microfluidic pump and rectangular diffraction gratings were fabricated on PDMS.

Embedding piezoelectric nanowires within a soft elastomer material should provide superior pressure sensing transducer, exploiting the properties of nanowire while maintaining flexibility. Here, flexible sensor has been fabricated on Kapton substrate and incorporated layer polydimethylsiloxane with embedded zinc oxide as mechanism. In response to applied compressive up 127 kPa, device generated...