More than a decade after the first report of single-molecule conductance, it remains challenging goal to prove exact nature transport through single molecules, including number channels and origin these from molecular orbital point view. We demonstrate for archetypical organic molecule, benzenedithiol (BDT), incorporated into mechanically controllable break junction at low temperature, how this information can be deduced studies elastic inelastic current contributions. are able tune...

We report on the experimental analysis of charge transport through single-molecule junctions open and closed isomers photoswitching molecules. Sulfur-free diarylethene molecules are developed studied via electrical optical measurements as well density functional theory calculations. The conductance current-voltage characteristics measured in a mechanically controlled break-junction system at low temperatures. Comparing results with single-level model, we find an unexpected behavior...

Nanofabrication via self-assembly of hybrid materials into well-defined architectures is essential for the next generation miniaturized devices. This paper describes our group's achievements towards development multifunctional nanostructures systems based on block copolymer PS-b-P4VP and inorganic nanoparticles (NPs) 0D, 1D, 2D complex 3D periodic nanostructures. The morphologies these are adjusted to gain functions structural control at different dimensions.

This study describes synthesis and detailed characterization of 2D 3D mesocrystalline films produced by self‐assembly iron oxide (magnetite) truncated nanocubes. The orientational relations between nanocrystals within the superlattice are examined atomistic models introduced. In case, two distinct superstructures (i.e., translational order) magnetite nanocubes can be observed with p 4 mm c 2 layer symmetries while maintaining same order (with [100] perpendicular to substrate). structure...

The effectiveness of in vivo suppression neovascularization and growth malignant glial tumors by situ administration an antibody directed against basic fibroblast factor (bFGF), a strong mitogen for cells mesodermal origin, was tested. One hundred fifty congenitally athymic nude rats (han rnu/rnu) were implanted intracerebrally with U-87MG tumor cells, known constitutive producers bFGF. animals randomly assigned to six groups 25 each. Animals treated application saline (Group F), control D),...

We developed a strategy to generate gold nanoparticles within the P4VP domains of PS-b-P4VP diblock copolymer in solid state. An organic−inorganic lamellar structure was obtained through selective incorporation precursor pyridine groups block. Understanding how can affect linear viscoelastic behavior block-copolymer system, could assist defining specific processing window for this type hybrid materials. Herein we compared rheology BCPs with and without order correlate macroscopic response...

Herein we present a novel approach for fabricating metallic micro- and nano-structures in thin films viaspin-coating solutions of diblock copolymer vesicles. A simple concept was developed, which is based on the metallization self-assembly copolymers. Firstly, vesicles incorporating inorganic components are generated solution by adjusting solvent ratio water–toluene mixtures. Subsequently, deposited onto solid substrate viaspin-coating. As result nano-sized honeycomb structures obtained;...

Abstract The development of atomic-scale structures revealing novel transport phenomena is a major goal nanotechnology. Examples include chains atoms that form while stretching transition metal contact or the predicted formation magnetic order in these chains, existence which still debated. Here we report an experimental study magneto-conductance (MC) and anisotropic MC with atomic-size contacts mono-atomic nonmagnetic platinum. We find pronounced diverse behaviour, amplitude functional...

Abstract The design and synthesis of nanostructured functional hybrid biomaterials are essential for the next generation advanced diagnostics treatment disease. A simple route to fabricate semiconductor nanofibers by self‐assembled, elastin‐like polymer (ELP)‐templated nanoparticles is reported. Core–shell nanostructures CdSe with a shell ELPs used as building blocks one‐dimensional (1D) nanostructures. particles generated in situ within ELP matrix at room temperature. controls size...

A simple and rapid method has been developed to prepare water-soluble CdSe nanoparticles at room temperature, with average particle diameters around 2 nm, stabilised by maltose-modified 2nd–5th generation poly(propylene imine) (PPI) dendrimers.

Abstract Herein we explore the possibility to control fabrication of non‐equilibrium nano‐patterns spin‐coated organic‐inorganic hybrid materials based on diblock copolymers and metal nanoparticles in thin films. It is demonstrated that type solvent initial solution concentration, among other factors, can serve as tools direct morphology The driving forces leading pattern formation are reviewed with respect these parameters—type solvents polymer concentration. As a result well‐defined...

A simple one-step procedure for 1D structures: Directed self-assembly of hybrid materials based on a poly(propyleneimine) dendrimer template and CdSe nanoparticles in situ is an effective nanofabrication tool to form well-defined semiconducting nanofibers coated with discrete Au (nanoalloy). Such functional will offer great potential various applications, such as biological markers nanoprobes among others. Detailed facts importance specialist readers are published ”Supporting Information”....

The design and development of well-defined, functional nanostructures via self-assembly is one the key objectives in current nanotechnology. Block copolymer-based hybrid materials are attractive candidates for fabrication multifunctional nanostructures, which provide building blocks more complex nanoarchitectures nanodevices. However, major challenges lies controlling structure formation these by guiding block copolymer. Here, hierarchical nanoporous structures fabricated guided multistep...

Low-temperature electronic transport measurements with high energy resolution require both effective low-pass filtering of high-frequency input noise and an optimized thermalization the system experiment. In recent years, elaborate filter designs have been developed for cryogenic low-level measurements, driven by growing interest in fundamental quantum-physical phenomena at scales corresponding to temperatures few millikelvin regime. However, a single concept is often insufficient thermalize...

Abstract Hierarchical nanoporous structures are fabricated by adsorption of micelles diblock copolymer‐templated Au‐nanoparticles onto a hydrophilic solid substrate. Gold nanoparticles prepared using (19 nm) polystyrene‐ block ‐poly(4‐vinylpyridine) (PS‐ b ‐P4VP) as nanoreactors. Deposition thin films the micellar solution, modified with non‐selective solvent (THF), on surfaces leads to formation hierarchical morphologies. The exhibit two different pore diameters and total density 15 × 10 8...

We experimentally investigate the effect of resonant microwave absorption on magneto-conductance tunable Co/Pd point contacts. At interface a non-equilibrium spin accumulation is created via and can be probed contact spectroscopy. interpret results as signature direct spin-flip excitations in Zeeman-split spin-subbands within Pd normal metal part junction. The inverse effect, which associated with emission photon ferromagnet/normal contact, also detected its unique transport

A simple route to fabricate functional nano-objects via self-assembly of block copolymer-based hybrid materials is described. In water–toluene mixtures, spheres, rod-like morphologies, and ring-like morphologies as well vesicles metal loaded copolymers micelles are fabricated. The concept generic realize different functionalities by incorporating various inorganic components (Au, Ag, Pt, Co…) into the copolymer matrix. mechanism describing formation micellar aggregates with presented based...

Since the rapid technological progress demands for ever smaller storage units, emergence of stable magnetic order in nanomaterials down to single-atom regime has attracted huge scientific attention date. Electronic transport spectroscopy been proven be a versatile tool investigation electronic, magnetic, and mechanical properties atomic contacts. Here we report comprehensive experimental study magnetoconductance electronic Pd contacts at low temperature. The analysis $(dI/dV)$ spectra curves...

Nanofibers are fabricated by the self-assembly of poly(propylene imine) (PPI) dendrimers in presence cadmium cations aqueous media. The fibers consist ribbons PPI linked cations. Subsequently, micrometer-long nanofibers decorated with gold nanoparticles via wet-chemical reduction. Detailed facts importance to specialist readers published as ”Supporting Information”. Such documents peer-reviewed, but not copy-edited or typeset. They made available submitted authors. Please note: publisher is...

We report low-temperature transport experiments on atomic-size contacts of bismuth that are fabricated using the mechanically controlled break-junction technique at low temperatures. observe stable with conductance values fractions one quantum G0 = 2e2/h, as is expected for systems long Fermi wavelength. defer two preferred scales: lower in order 0.015 and can be attributed to single-atom Bi contact, while higher amounts 0.15 G0, indicated by appearance multiples this value histogram. Rich...

We report the observation of strong resonances at zero bias in differential conductance through Al–C60–Al junctions with tunable electrode distance, measured above T = 10 K. The value resonance ranges from a few percent up to eighty quantum conductance. may disappear or reoccur completely and discontinuously upon very small changes distance. However, once they are formed robust respect discuss similarities differences common theories Kondo screening spontaneous spin polarization C60...