Nanoscale Science And Design

Bottom-contact fullerene C[sub 60] thin-film transistors with high field-effect mobilities

Masatoshi Kitamura, Shigeru Aomori, Jong Ho Na, and Yasuhiko Arakawa
Fullerene C thin-film transistors (TFTs) with bottom-contact structure have been fabricated. The parasitic resistance was extracted using gated-transmission line method. The drain/source electrodes consisted of a single Au layer with no adhesion layer; the channel lengths ranged from 5 to 40 [mu]m. ... [Appl. Phys. Lett. 93, 033313 (2008)] published Wed Jul 23, 2008.

Local ordering of polymer-tethered nanospheres and nanorods and the stabilization of the double gyroid phase

Christopher R. Iacovella, Mark A. Horsch, and Sharon C. Glotzer
We present results of Brownian dynamics simulations of tethered nanospheres and tethered nanorods. Immiscibility between tether and nanoparticle facilitates microphase separation into the bicontinuous, double gyroid structure (first reported by Iacovella et al. [Phys. Rev. E 75, 040801(R) (2007)] an ... [J. Chem. Phys. 129, 044902 (2008)] published Wed Jul 23, 2008.

Observation of spectral anisotropy of gold nanoparticles

Hu Cang, Daniel Montiel, C. Shan Xu, and Haw Yang
Metallic nanoparticles synthesized by solution-phase chemistry usually exhibit various polygonal morphologies. The shape is known to have a great impact on a nanoparticle's optical properties, for instance, the surface plasmon resonance frequency. It remains unclear, however, whether the scattering ... [J. Chem. Phys. 129, 044503 (2008)] published Wed Jul 23, 2008.

Ion beam synthesis of Ni nanoparticles embedded in quartz

P. Kumar, Ravi Kumar, D. Kanjilal, M. Knobel, P. Thakur et al.
Fabrication and fluence dependent growth of Ni nanoparticles in quartz matrix using a low energy ion implantation followed by thermal annealing are reported. 100 keV Ni ions are implanted (at room temperature) in quartz at different ion fluences using a low energy ion beam facility. The samples are ... [J. Vac. Sci. Technol. B 26, L36 (2008)] published Wed Jul 23, 2008.

Direct Polymerized Polyaniline Nanostructures on Modified Indium-Tin Oxide Surface for Electrochemical Supercapacitors

Chellachamy A. Amarnath, Jinho Chang, Jisun Lee, Do Young Kim, Rajaram S. Mane et al.
Direct polymerized polyaniline (PANI) nanostructures, i.e., nanospheres (NSs) and nanorods (NRs), are grown using different precursor conditions via electroless surface polymerization and examined by scanning electron microscopy images, attenuated total reflectance-fourier transform infrared spectro ... [Electrochem. Solid-State Lett. 11, A167 (2008)] published Wed Jul 23, 2008.

Dragging of Polarizable Nanodroplets by Distantly Solvated Ions

Boyang Wang and Petr Kral
We show by molecular dynamics simulations that ions intercalated in carbon and boron-nitride nanotubes can be solvated at distance in polarizable nanodroplets adsorbed on their surfaces. When the ions are driven in the nanotubes by electric fields, the adsorbed droplets are dragged together with the ... [Phys. Rev. Lett. 101, 046103 (2008)] published Wed Jul 23, 2008.

Enhancement of fluorescence intensity from an immunoassay chip using high-aspect-ratio nanopillars fabricated by nanoimprinting

Kosuke Kuwabara, Masahiko Ogino, Takashi Ando, and Akihiro Miyauchi
High-aspect-ratio structures (nanopillars) were used to enhance the fluorescence intensity of immunoassay chips. Nanoimprinting with elongation phenomenon was applied to fabricate polystyrene nanopillars. Human alpha fetoprotein was detected by a fluorescence immunoassay protocol. Fluorescence inten ... [Appl. Phys. Lett. 93, 033904 (2008)] published Tue Jul 22, 2008.

CVD Growth of In[sub 2]O[sub 3] Nanowires Using a Mixed Source of Indium and Indium Chloride

D. H. Kuo, C. W. Hsu, and C. H. Liang
The growth of InO nanowires (NWs) at a lower precursor temperature of 400600 degrees C were investigated using a cost-effective chemical vapor deposition (CVD) method at growth temperatures of 500900 degrees C. Different reactants for CVD precursors were tested, and the only successful reactant for ... [J. Electrochem. Soc. 155, K156 (2008)] published Tue Jul 22, 2008.

Magnetic properties of GaMnAs nanodot arrays fabricated using porous alumina templates

S. P. Bennett, L. Menon, and D. Heiman
Ordered arrays of GaMnAs magnetic semiconductor nanodots have been fabricated using anodic porous alumina templates as etch masks. The magnetic behavior is studied for prepared arrays with 40 nm dot diameter, 15 nm dot thickness, and 80 nm periodicity. The disklike nanodots exhibit an easy axis for ... [J. Appl. Phys. 104, 024309 (2008)] published Tue Jul 22, 2008.

Device study, chemical doping, and logic circuits based on transferred aligned single-walled carbon nanotubes

Chuan Wang, Koungmin Ryu, Alexander Badmaev, Nishant Patil, Albert Lin et al.
In this paper, high-performance back-gated carbon nanotube field-effect transistors based on transferred aligned carbon nanotubes were fabricated and studies found that the on/off ratio can reach 10 and the current density can reach 1.6 [mu]A/[mu]m after electrical breakdown. In addition, chemical ... [Appl. Phys. Lett. 93, 033101 (2008)] published Mon Jul 21, 2008.

Increased robustness for fluidic self-assembly

Mekala Krishnan, Michael T. Tolley, Hod Lipson, and David Erickson
Self-assembly methods have been developed at the micro- and nanoscale to create functional structures from subelements stochastically dispersed in a fluid. Self-assembly paradigms have limitations in terms of achievable complexity of the final structure, ability to perform error correction, and scal ... [Phys. Fluids 20, 073304 (2008)] published Mon Jul 21, 2008.

Evolution of the nanostructure of deposits grown by electron beam induced deposition

Juntao Li, Milos Toth, Vasiliki Tileli, Kathleen A. Dunn, Charlene J. Lobo et al.
Environmental scanning electron microscopy (ESEM) was used to perform electron beam induced deposition (EBID) using a WF precursor. The deposits consist of WO nanocrystals embedded in an amorphous matrix. Oxide formation is attributed to residual oxidizers present in the ESEM chamber during EBID. Un ... [Appl. Phys. Lett. 93, 023130 (2008)] published Fri Jul 18, 2008.

Publisher's Note: Probing the Morphology and Energy Landscape of Blends of Conjugated Polymers with Sub-10 nm Resolution [Phys. Rev. Lett. [bold 101], 016102 (2008)]

Sebastian Westenhoff, Ian A. Howard, and Richard H. Friend
... [Phys. Rev. Lett. 101, 039904 (2008)] published Fri Jul 18, 2008.

An atomistic study of nanosprings

I-Ling Chang and Min-Shao Yeh
Molecular statics method incorporating minimum energy concept was employed to study the one-dimensional copper nanospring with faced-center-cubic crystal structure. Various geometric sizes (wire diameter, radius, pitch), numbers of turns and crystal orientations of nanosprings were systematically mo ... [J. Appl. Phys. 104, 024305 (2008)] published Fri Jul 18, 2008.

Testing the consistency of the Maxwell–Stefan formulation when predicting self-diffusion in zeolites with strong adsorption sites
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Single-wall carbon nanotube synthesis by CO disproportionation on nickel-incorporated MCM-41
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Large- and small-nanopore silica prepared with a short-chain cationic fluorinated surfactant
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Polymeric worm micelles as nano-carriers for drug delivery
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Dendrimer-mediated synthesis of platinum nanoparticles: new insights from dialysis and atomic force microscopy measurements
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Adhesion of Pseudomonas fluorescens onto nanophase materials
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Engineering nanospaces: ordered mesoporous silicas as model substrates for building complex hybrid materials
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Electrical transport, Meyer–Neldel rule and oxygen sensitivity of Bi2S3
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Structural and optical characterizations of multi-layered and multi-stacked PbSe quantum dots
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Single-step synthesis of well-crystallized and pure barium titanate nanoparticles in supercritical fluids
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Contacting gold nanoparticles with carbon nanotubes by self-assembly
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Single-crystalline MgxZn1-xO (0≤x≤0.25) nanowires on glass substrates obtained by a hydrothermal method: growth, structure and
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