Recently, the surface of wings Psaltoda claripennis cicada species has been shown to possess bactericidal properties and it suggested that nanostructure present on was responsible for bacterial death. We have studied surface-based activity three different cicadas (Megapomponia intermedia, Ayuthia spectabile Cryptotympana aguila) in order correlate relationship between observed topographical features their properties. Atomic force microscopy scanning electron performed this study revealed...

Brewer's spent grain (BSG), accounting for 85% of the total by-product from breweries, was used as a feedstock L-lactic acid production in present study. BSG enzymatically hydrolysed and promoted to be self-sufficient by using it sole source carbon, protein minerals. Process parameters like glucose concentration (10–20 g/L), glucose-to-protein ratio (1:1 – 5:1), inoculum (3 10% v/v) were selected divert carbon enhance concentration, which would otherwise result bacterial biomass production....

Molecular self-assembling block copolymers (BCPs) have shown promise as a next generation bottom-up lithography technology. However, critical step in advancing this approach is the elimination of polymer dewetting due to bulk solvent nucleation and thermodynamically driven film rupture that can occur during vapor annealing process. We report on pattern formation via phase segregation spin coated diblock copolymer films through investigation parameters limit high saturation conditions results...

Herein is described an operationally simple process concerning the observation that, following either inter-, or intramolecular Heck olefination, stirring of so formed substituted alkenyl product under atmosphere hydrogen efficiently effects alkene hydrogenation. Overall this two-operation, one-pot "reductive Heck" sequence notable since direct reductive processes, using additives such as formate salts, are restricted to a limited range substrates. In total 25 examples reported (yields...

Herein we demonstrate the fabrication of arrays micropillars, achieved through combination direct laser writing and nanoimprint lithography. By combining two diacrylate monomers, polycaprolactone dimethacrylate (PCLDMA) 1,6-hexanediol (HDDA), copolymer formulations that, owing to varying ratios hydrolysable ester functionalities present in moiety, can be degraded presence base a controllable manner. As such, degradation micropillars tuned over several days as function PCLDMA concentration...

Recent studies have shown that insect wings evolved to micro- and nanoscale structures on the wing surface, biomimetic research aims transfer such application-specific materials. Herein, we describe a simple cost-effective method of replica molding topographies four cicada species using UV-curable polymers. Different polymer blends polyethylene glycol diacrylate polypropylene were used as materials chamber was designed precisely control x, y, z dimensions. Analysis by scanning electron...

A method to prepare a highly stable carboxylic acid functional surface on various substrates for use in bioassays is reported. thin layer of poly(methylmethacrylate) (PMMA) achieved by spin coating dissolved PMMA onto variety underlying at thicknesses range c. 5-27 nm. Varying the concentration, time and spinning speed controls thickness coated layer. The root-mean-squared roughness values are less than 1.5 nm, resulting smooth uniform Substrate functionalisation carried out either...

A visual demonstration showing the physical properties of hydrophobic and hydrophilic surfaces is described. This utilizes unique aqua-sheets that are fabricated using plasma enhanced chemical vapor deposition (PECVD) to give areas high water contact angle (hydrophobic) low (hydrophilic). The hidden pattern or message can be made visible by applying food dye-stained sheets, resulting in aqua-art.

Herein, we exploit direct laser writing as a means to fabricate negative masters for the generation of polymeric nanopillars, via replica molding. Through optimization design parameters, fabrication configurations, and polymerization protocols, demonstrate first time large-area templates, which can be used repeatedly produce some tallest (>1.5 μm) thinnest (<300 nm) pillars achieved in biocompatible photocurable polymers, such polyethylene glycol diacrylate, polypropylene polycaprolactone...

Ortho-substituted arylboronic esters are efficiently coupled with carbamoyl chlorides under Pd-catalysis to give tertiary benzamides.

We have designed and fabricated a library of polyethylene glycol (PEG)-based polymer blends, including blends two PEG-based polymers that are liquid at room temperature where the optimisation blending method allows for incorporation higher molecular-weight which solid temperature. The absence solvent in these makes them perfect candidates use our recently developed Fill-Molding Capillaries (FIMIC) patterning method. As FIMIC samples shown to be not completely smooth (a small topography up...

Abstract We have employed our recently developed method Fill‐Molding In Capillaries (FIMIC) to fabricate elastically micropatterned substrates, using two poly(ethylene glycol) (PEG)‐based polymers with different elastic properties and swelling behavior. evaluated the FIMIC process quality of eventual substrates (the “FIMICs”) by atomic force microscopy (AFM); imaging surface topography quantifying local elasticity. Topographical reveals that FIMICs is never perfectly smooth; a slight...

There is a strong reliance on fossil fuel-based plastics in the life sciences sector and it has been estimated that global life-sciences (biology, medicine, etc.) alone create plastic waste of approximately 5.5 million tonnes/year with 99% single-use laboratory made from fossil-fuel sources growing interest viability bioplastics as an alternative to settings. Here, we report use polylactic acid (PLA) production Petri dish. The properties PLA dish are tested compared standards for assessing...

The cis -dibromination of unsaturated bicyclic bridgehead sultams 5a and 5b , experiments designed to understand the -stereochemical outcome these reactions, are described. In case a novel solvent dependent carbocation rearrangement occurs with formation 18b . -Dibromides 13a 13b undergo regioselective dehydrobromination, participation resultant vinyl bromide 24a in lithiation Pd-coupling chemistry is latter, hydrogenation styryl products afforded single diastereoisomer. These compounds were...

Hybrid surface micro-patterns composed of topographic structures polyethylene glycol (PEG)-hydrogels and hierarchical lines gold nanoparticles (Au NPs) were fabricated on silicon wafers. Micro-sized Au NPs first obtained the a wafer via "micro-contact deprinting", method recently developed by our group. Topographic PEG, both low high aspect ratio (AR up to 6), then aligned pre-patterned procedure adapted from soft lithographic MIMIC (Micro-Molding in Capillaries), which is denoted as...

We demonstrate the first steps towards realizing a highly effective hardmask fabrication technique for producing cheap low defect nanoporous membranes, which can be incorporated as fluidic wicking structures use in evaporative cooling solutions integrated at device level. Next-generation are becoming necessary to dissipate increasing heat fluxes and maintain acceptable junction temperatures high-speed electronics. The proposed pumpless two-phase evaporation-based sink relies on supported...

This paper describes the fabrication of oligonucleotide-coated Cy5-doped silica nanoparticles using a combination multivalent linkers and their use in surface-based DNA sandwich hybridization assays. Dipodal silane is introduced as means to fabricate amine-coated its advantages compared monopodal silanes are discussed. The dipodal conjunction with three different polymer (oxidized dextran, linear 8-arm polyethylene glycol (PEG)) immobilize single-stranded investigated dynamic light...

Self-assembling block copolymer (BCP) patterns are one of the main contenders for fabrication nanopattern templates in next generation lithography technology. Transforming these to hard mark materials is key pattern transfer and some cases, involves selectively removing from nanopattern. For poly(styrene)-block-poly(4-vinylpyridine) (PS-b-P4VP), a high χ BCP system which could be potentially incorporated into semiconductor nanofabrication, this selective removal predominantly done by wet...