Increasing the thermal conductivity of PDMS (polydimethylsiloxane) based microfluidics is an important issue for the thermal management of hot spots produced by embedding electronic circuits in such systems. This paper presents a solution for enhancing the thermal conductivity of such PDMS based microfluidics by introducing thermally conductive alumina (Al2O3) nanoparticles, forming PDMS/Al2O3 ...

Previously, we reported a micro magnetic stir-bar mixer driven by an external rotating magnetic field and its rapid mixing performance in polydimethyl-siloxane (PDMS) channels. The PDMS piece with embedded fluid channels were manually aligned to a glass substrate and assembled. In this paper, we report the fabrication and testing results of a micro magnetic stir-bar monolithically integrated in...

We demonstrate a simple one-step method for synthesizing noble metal nanoparticle embedded free standing polydimethylsiloxane (PDMS) composite films. The process involves preparing a homogenous mixture of metal salt (silver, gold and platinum), silicone elastomer and the curing agent (hardener) followed by curing. During the curing process, the hardener crosslinks the elastomer and simultaneous...

Peer data management systems (PDMS) are a natural extension to integrated information systems. They consist of a dynamic set of autonomous peers, each of which can mediate between heterogenous schemas of other peers. A new data source joins a PDMS by defining a semantic mapping to one or more other peers, thus forming a network of peers. Queries submitted to a peer are answered with data residi...

Although it is well known that phospholipids self-assemble on hydrophilic plasma-oxidized PMDS surfaces (ox-PDMS) to form cell membrane mimetic bilayers, the temporal stability of phospholipid membranes on these surfaces is unknown. Here we report that phospholipid bilayers remain stable on solvent-cleaned ox-PDMS for at least 132 hours after preparation. Absent solvent cleaning, the bilayers w...

Abstract Polydimethylsiloxane (PDMS) is an excellent soft mold material with the advantages of precise replication, easy demolding, and low production cost. However, strength hardness PDMS are relatively low, cannot be directly inductively heated. In this study, embedded ferromagnetic powders to increase its make it heatable. Direct induction heating can raise inherent temperature, efficiency b...

The pervaporative desalination of synthetic seawater and brines was studied to explore the water flux salt rejection a thin-film composite (TFC) membrane made polydimethylsiloxane (PDMS) dip-coated on porous polysulfone support. Despite hydrophobic nature rubbery PDMS, we demonstrate that nonporous TFC membranes exhibit remarkable performance as evidenced by very high permeance 99.8 ± 0.2% NaCl...

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.

The volatile compounds (VCs) in headspace of adipose tissues (perirenal, tail, caul) were extracted by solid-phase microextraction (SPME) fiber coated with carboxen/ polydimethylsiloxane (CAR/PDMS) or divinylbenzene/ polydimethylsloxane (DVB/CAR/PDMS). In extraction CAR/PDMS coating compared to DVB/CAR/PDMS, more VCs obtained perirenal (53 versus 41), tail (51 vs 47) and caul (35 33) fats. Incr...

their professional advices and guidance on my research. experience with all kinds of fun. Finally, the author's grateful appreciation goes to his parents whose hardworking spirit and dedication to family have always been a great example for the author. Figure 2-1 Schematic diagram of tilted UV lithography in water medium (left: the experimental setup; right: optical refraction path). Figure 2-5...