聚二甲基硅氧烷

Abstract(#br)Special wettability of biological surfaces usually depends on the unique micro-structures and surface chemistry natures. However, current preparation methods often involve complex processing steps or expensive moulds and have the limited ability to simulate these ordered and elaborate micro-structures. Herein, we report a facile and mould-free approach to fabricate special wetting surfaces by patterning an ordered porous structure with various geometric parameters via one-step 3D printing of Polydimethylsiloxane (PDMS) ink.

Abstract(#br)In this study, we developed a novel method based on reactive synthesis to prepare nanostructured hydroxyapatite/polydimethylsiloxane (n-HA/PDMS) composites. During reactive synthesis, the formation of calcium phosphates (CP's) occurs in situ during the mixing of PDMS with H 3 PO 4 and Ca(OH) 2 , thus facilitating the production and incorporation of CP and increasing adhesion between the nanoparticles produced in the polymeric matrix. Thus, we assessed the influence of the reinforcing phase on the surface energy, tensile strength, and bioactivity of the composites.

Abstract(#br)Atomic layer deposition (ALD) surges as an attractive technology to deposit thin films on different substrates for many advanced biomedical applications. Herein titanium dioxide (TiO 2 ) thin films were successful obtained on polyurethane (PU) and polydimethylsiloxane (PDMS) substrates using ALD. The effect of TiO 2 films on Candida albicans growth and inactivation process were also systematic discussed. TiCl 4 and H 2 O were used as precursors at 80\u003cce:hsp sp=\"0.25\"/\u003e°C, while the reaction cycle number ranged from 500 to 2000.

Abstract(#br)In this paper, we present useful technique for fabrication of novel photonic devices created in the polydimethylsiloxane (PDMS). We use combination of direct laser writing in thin photoresist layer with embossing process of liquid PDMS. We prepared ring resonator and Mach-Zehnder interferometer in PDMS. The shape of prepared PDMS photonic devices was analyzed by confocal laser microscope and atomic force microscope. Optical characterization of these devices reveals extinction ratios of up to 20\u003cce:hsp sp=\"0.25\"/\u003edB.

Abstract(#br)Superhydrophobic surfaces with extremely low wettability have attracted attention globally along with their remarkable characteristics such as anti-icing, anti-sticking, and self-cleaning. In this study, a facile and cost-effective approach of fabricating patternable superhydrophobic surfaces, which can be applied on various substrates (including large area and 3D curvilinear substrates), is proposed with a salt-dissolution-assisted etching process. This novel proposal is environmentally benign (entirely water-based and fluorine-free process).

Abstract(#br)Herein, we report a method for the fabrication of an efficient membrane for butanol recovery from dilute aqueous solution using micron-sized particles of surface modified silicalite-1 as macro-crosslinkers within a polydimethylsiloxane (PDMS) matrix. In this work, silicalite-1 of nano- and micron-sized particles were synthesized and surface modified with a range of alkyloxysilanes in the fabrication of mixed matrix membranes (MMMs) in order to minimize the undesirable voids.

Abstract(#br)Organophilic pervaporation (OPV) has been considered as one of the most promising separation processes for the recovery of biofuels from fermentation broths, however, in addition to preferred target product – liquid biofuels, the yeast cells and fermentation nutrients could affect the recovery efficiency of biofuels from broths by pervaporation.

Abstract(#br)Fouling in membrane distillation (MD) results in an increase in operation costs and deterioration in a water quality. In this work, a poly(vinylidene fluoride-co-hexafluoropropene) (PVDF-HFP) electrospun (E-PH) membrane was fabricated by hybridizing polydimethylsiloxane (PDMS) polymeric microspheres with superhydrophobicity onto the E-PH membrane via electrospinning. The resulting hybrid PDMS with E-PH (E-PDMS) membrane showed a significant enhancement in surface hydrophobicity (contact angle, CA=155.4°) and roughness (R a =1285\u003cce:hsp sp=\"0.25\"/\u003enm).

Abstract(#br)Loop-mediated isothermal amplification (LAMP) is a DNA amplification approach characterized by high sensitivity and specificity. In “digital LAMP”, small quantities of both template DNA and reagents are encapsulated within a droplet or microwell, allowing for analysis of precious nucleic acid samples in shorter amounts of time relative to traditional DNA amplification protocols (e.g., PCR) with an improved limit of detection. In this study, an integrated, self-driven microfluidic chip was designed to carry out digital LAMP.

Abstract(#br)Superhydrophobic electrospun nanofibrous membranes (ENMs) with a fully interconnected porous web structure and high void volume fraction have been proposed for membrane distillation (MD). This study describes a novel and facile design strategy for the fabrication of superhydrophobic and self-cleaning polysulfone-polydimethylsiloxane (PSU-PDMS) ENMs for direct contact membrane distillation (DCMD) via electrospinning PSU nanofibers followed by PDMS coating and cold-press post-treatment.