نتایج جستجو برای: gold nanostructures
تعداد نتایج: 100987 فیلتر نتایج به سال:
Photoactivated orientation of gold nanorods (AuNRs) incorporated into polymethylmethacrylate and SU-8 photoresist films occurs under red light activation. Excitation of the longitudinal surface plasmon resonance band leads to selective orientation of the nanostructures, revealed by a change in the absorption spectra.
Arrays of multi-segmented hybrid nanostructures of carbon nanotube and gold nanowires have been synthesized using a combination of chemical vapour deposition and electrodeposition methods and we further demonstrate that ultra-high power electrochemical double layer capacitors can be engineered using these hybrid nanowires, resulting in very high power densities.
A new class of gold nanostructures, concave nanocubes, enclosed by 24 high-index {720} facets, have been prepared in a monodisperse fashion by a modified seed-mediated synthetic method. The Cl(-) counterion in the surfactant plays an essential role in controlling the concave morphology of the final product. The concave nanocubes exhibit higher chemical activities compared with low-index {111}-f...
An unprecedented and highly efficient glycosylation initiated cationic ring-opening polymerization (CROP) of tetrahydrofuran is disclosed employing glycosyl ortho-hexynylbenzoates as donors and gold(I) as a catalyst, that provides an easy access to novel glycopolymers which could self-assemble into nanostructures.
By using aminosugars, a series of multipodal gold nanostructures has been obtained via a one-pot chemical reduction method in aqueous solution and at room temperature. The size and shape of these NPs were controlled either by adjusting the amount of reducing agent or by quenching the reaction at a given time.
The hydrogenation features of gold nanoparticles deposited on highly oriented pyrolytic graphite were determined, and composite nanostructures consisting pure hydrogenized synthesized. Methods scanning tunneling microscopy spectroscopy have been successfully used to probe the bottom conductive band determine shape electron energy barrier in gold. Considering models surface volume hydrogenation,...
In this work, a novel chemical composition characterization method of direct-write focused electron beam-induced deposition (FEBID) gold nanostructures is presented. The reliable determination the content for has been challenging due to its limited interaction volume. We hereby propose an alternative technique measuring with By differences in optical absorption nanostructure resonance frequency...
Compared to freestanding nanoparticles, supported nanostructures typically show better mechanical stability as well as ease of handling. Unique shapes such as core-shells, raspberries and crescents have been developed on supported materials to gain improved chemical and optical properties along with versatility and tunability. We report the formation of hyper-branched gold structures on silica ...
Gold nanostructures have attracted broad attention. Among various nanostructures, gold nanobipyramids shown great potential in sensing, biomedicine, environmental protection, chemical catalysis, and optics due to their unique physical optical properties ease of functionalization. Compared with other plasmonic possess narrow resonances, stronger local field enhancement, size- shape-dependent sur...
We report the realization of two-dimensional optical wavelength demultiplexers and multiports for surface plasmons polaritons (SPPs) based on plasmonic crystals, i.e., photonic crystals for SPPs. These SPP elements are built up of lithographically fabricated gold nanostructures on gold thin films. We show by direct imaging of laterally confined SPP beams in the visible spectral range by leakage...
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