A straightforward and effective polyol route for the controllable synthesis of high-quality gold (Au) octahedra with uniform size is presented in an ethylene glycol solution. Large-scale Au ranging from tens to hundreds nanometers were selectively synthesized high-yield. The surfaces octahedral nanocrystals are smooth correspond {111} planes. Formation nanooctahedra was attributed preferential adsorption cationic surfactant poly(diallyldimethylammonium) chloride (PDDA) molecules on planes...

Pieces of eight: Single-crystalline Au nano-octahedra with well-defined shape and tunable size can be synthesized by a modified polyol process. The octahedral nanocrystals have sharp corners display optical properties that are sensitive to the crystal sizes truncation tips. Supporting information for this article is available on WWW under http://www.wiley-vch.de/contents/jc_2002/2007/z604167_s.pdf or from author. Please note: publisher not responsible content functionality any supporting...

An unconventional and straightforward route to fabricate morphology-controlled 2D ordered carbonaceous nanoarrays is presented. This based on the electron irradiation of a polystyrene colloidal monolayer followed by thermal decomposition. strategy has advantages low-cost fabrication easy manipulation compared conventional lithography technique furthermore overcomes disadvantage self-assembly that generally defect irregular units in arrays. Various with units, including network-like star-like...

Immer acht: Einkristalline Au-Nanooktaeder mit genau definierter Form und einstellbarer Größe konnten einem modifizierten Polyolprozess hergestellt werden. Die oktaedrischen Au-Nanokristalle haben scharfe Ecken optische Eigenschaften, die empfindlich auf Kristallgröße das Abschneiden von Spitzen reagieren. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2001/2007/z604167_s.pdf or from author. Please note: The publisher not responsible...

We present a facile route to prepare bionic superhydrophobic coatings with striking supporting forces by fabricating hierarchical micro-/nanostructures on curved surfaces. The structure was synthesized decorating silver nanoparticles monolayer array of polystyrene (PS) microspheres. formed flat surface transferred using acetate solution, which can then be converted into through thermal decomposition. fabricated coating convex tube exhibited strong water-repellent property and supplied high...

Biomimetic nanoparticles (NPs) have been actively studied for their biological compatibility due to its distinguished abilities viz. long-term circulation, low toxicity, ease surface modification, and ability avoid phagocytosis of NPs by macrophages. Coating the with a variety cell membranes bearing immune control proteins increases drug efficacy while complementing intrinsic advantages NPs. In this study, efforts were made introduce oxophilic radiometal 89Zr hollow mesoporous silica...

Polymer/ceramic composite films with micro- and nanocombined hierarchical structures are fabricated by electron irradiation of poly(methyl methacrylate) (PMMA) microspheres/silicone grease. Electron induces volume contraction PMMA microspheres simultaneously transforms silicone grease into a ceramic material silicon oxycarbide many nanobumps. As result, highly porous that consist micrometer-sized pores microparticles decorated nanobumps created. The the structure exhibit good...

Abstract Unique hierarchical pore structures were fabricated by simply irradiating an electron beam onto silicone grease films. The consisted of micrometer‐sized pores and macroporous walls. Due to the high surface roughness, exhibited both superhydrophobicity with a water contact angle (CA) 170° superhydrophilicity extremely low CA 3° after chemical treatment surfaces. In addition structures, sponge‐like also irradiation magnified image

We present an unprecedented and systematic route to controllably fabricate hexagonal non-close-packed (hncp) monolayer colloidal crystals binary (BCCs) based on plasma-electron coirradiation of polystyrene monolayers followed by thermal decomposition. Hncp with tunable particle sizes periods could be fabricated changing the pristine size decomposition time. In addition, BCCs trimodal that are composed different-sized particles can also adding small prepared hncp crystals. Both ratio volume...

A simple and controllable one-step method to fabricate superhydrophobic surfaces on poly(tetrafluoroethylene) (PTFE) films is developed the base of electron irradiation. When thickness PTFE higher than penetration depth beams, electrical charging occurs at surface because imbalance between accumulation incident electrons emission secondary electrons. Local inhomogeneity charge distribution due this results in nonuniform decomposition molecular bonds. As fluence increases, morphology...

Two commodity polymers, polystyrene (PS) and high-density polyethylene (HDPE), were irradiated by high-energy He ion beams at low fluence to examine the wettability changes different fluences. The water contact angles of PS HDPE surfaces reduced from 78.3° 46.7° 81.5° 58.5°, respectively, upon increasing 0 1 × 1013 He2+/cm2 for irradiation durations ≤4 min. Surface analyses performed investigate these changes. texture evaluations via scanning electron atomic force microscopies indicated...

This study investigated the combined effects of proton irradiation and surface pre-treatment on current characteristics Gallium Nitride (GaN)-based metal-insulator-semiconductor high-electron-mobility-transistors (MIS-HEMTs) to evaluate radiation hardness involved with Silicon (SiN) passivation/GaN cap interface. The impact static dynamic devices without were analyzed 5 MeV irradiation. In terms transfer before after irradiation, drain reduced by an increase in sheet contact resistances...

In this study, AlGaN/GaN heterojunction-based metal–insulator-semiconductor high-electron-mobility transistors (MIS-HEMTs) were fabricated using silicon nitride (SiN) passivation layer. This layer was deposited under the different gas ratio conditions. The effects of proton irradiation on current characteristics devices investigated according to deposition conditions SiN film. drain (ID) two (with Si-rich or N-rich layers) reduced by regardless condition film because proton-induced...

This study investigates the effect of liquid gallium (Ga) on metal foils made titanium (Ti), niobium (Nb), and molybdenum (Mo). The Ti, Nb, Mo were heated in Ga at 120°C for a maximum two weeks. After heating, changes morphology chemical composition analyzed by using field emission scanning electron microscope, energy‐dispersive X‐ray spectrometer, diffractometer, photoelectron spectrometer. results analysis indicated that Nb foil showed minimum adhesion to surface while amount was observed...

In imparting wetting properties, a fabrication process without the addition of new compounds and deposition coating layers would be most desirable because it does not introduce additional complexities. Hence, ion beam irradiation technique is used as enables chemistry materials to modified through simple adjustments parameters such type accelerated particles, energy, fluence. this study, hydrophilicity alumina surfaces was weakened by irradiating He beams different energy levels (200 keV 20...

In this study, a facile route to fabricate micropatterns of cells is presented on the basis electron irradiation poly(dimethylsiloxane) (PDMS). PDMS films were irradiated with beams through pattern mask micrometer-sized grids. After irradiation, changes in chemical composition, morphology, and wettability surface investigated by using an X-ray photoelectron spectrometer, atomic force microscope, contact anglometer. The results analysis revealed that hydrophobic was changed into hydrophilic...