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Cracks in Magnetic Nanocrystal Films: Do Directional and Isotropic Crack Patt...
In this letter, we show that the use of nanocrystals enables new insights into the scaling law of crack patterns. Directional and isotropic crack patterns made of γ-Fe2O3... -
Symmetry Relationship and Strain-Induced Transitions between Insulating M1 an...
The ability to synthesize VO2 in the form of single-crystalline nanobeams and nano- and microcrystals uncovered a number of previously unknown aspects of the metal−insulator... -
Patterned Multiplex Pathogen DNA Detection by Au Particle-on-Wire SERS Sensor
A Au particle-on-wire system that can be used as a specific, sensitive, and multiplex DNA sensor is developed. A pattern formed by multiple Au nanowire sensors provides... -
Ligand-Induced Anisotropy of the Two-Photon Luminescence of Spherical Gold Pa...
Here we report on the visible luminescence properties of individual spherical gold particles in solution, obtained by two-photon excited fluorescence correlation spectroscopy... -
Spatial Distribution of Defect Luminescence in GaN Nanowires
The spatial distribution of defect-related and band-edge luminescence from GaN nanowires grown by metal−organic chemical vapor deposition was studied by spatially resolved... -
Impermeable Atomic Membranes from Graphene Sheets
We demonstrate that a monolayer graphene membrane is impermeable to standard gases including helium. By applying a pressure difference across the membrane, we measure both the... -
Effect of Spatial Charge Inhomogeneity on 1/f Noise Behavior in Graphene
Scattering mechanisms in graphene are critical to understanding the limits of signal-to-noise-ratios of unsuspended graphene devices. Here we present the four-probe low... -
Detection of Nanoscale Magnetic Activity Using a Single Carbon Nanotube
The ultimate conductometric sensor for ferromagnetic activity of nanoscale magnetic materials could be a single carbon nanotube. We show that the electrical conductance of an... -
ZnO Tetrapods Designed as Multiterminal Sensors to Distinguish False Response...
Individual zinc oxide tetrapods were designed as multiterminal sensors by the e-beam lithography method. Different from double-terminal sensors, these sensors can give multiple... -
Superior Lithium Electroactive Mesoporous Si@Carbon Core−Shell Nanowires for ...
Mesoporous Si@carbon core−shell nanowires with a diameter of ∼6.5 nm were prepared for a lithium battery anode material using a SBA-15 template. As-synthesized nanowires... -
A Multi-Wall Carbon Nanotube Tower Electrochemical Actuator
Patterned multiwall carbon nanotube arrays up to four millimeters long were synthesized using chemical vapor deposition. Electrochemical actuation of a nanotube array tower was... -
Dynamics of paramagnetic metallofullerenes in carbon nanotube peapods.
We filled SWNTs with the paramagnetic fullerene Sc@C82 to form peapods. The interfullerene 1D packing distance measured using TEM is d = 1.1 ± 0.02 nm. The Sc@C82 in SWNT... -
Tough Nanocomposites: The Role of Carbon Nanotube Type
Unusually large deformation is observed in poly(methyl metacrylate) (PMMA) electrospun fibers under tension when multiwall or single-wall carbon nanotubes (MWCNTs and SWCNTs)... -
Mesoporous Bragg Stack Color Tunable Sensors
Herein we report a novel self-assembly synthesis, structural and optical characterization of mesoporous Bragg stacks (MBS) composed of spin-coated multilayer stacks of... -
Anisotropic Etching and Nanoribbon Formation in Single-Layer Graphene
We demonstrate anisotropic etching of single-layer graphene by thermally-activated nickel nanoparticles. Using this technique, we obtain sub-10nm nanoribbons and other graphene... -
Reversible Metal-Semiconductor Transition of ssDNA-Decorated Single-Walled Ca...
A field effect transistor (FET) measurement of a SWNT shows a transition from a metallic one to a p-type semiconductor after helical wrapping of DNA. Water is found to be... -
Defect-Induced Atomic Migration in Carbon Nanopeapod: Tracking the Single-At...
We demonstrate here the single-atom migration of Tb, Gd, or Ce metal from cage to cage through an intentionally induced atomic path within a carbon nanopeapod. The atomic path... -
Coherent coupling between surface plasmons and excitons in semiconductor nano...
We present an experimental demonstration of strong coupling between a surface plasmon propagating on a planar silver substrate, and the lowest excited state of CdSe... -
Flexible Piezotronic Strain Sensor
Strain sensors based on individual ZnO piezoelectric fine-wires (PFWs; nanowires, microwires) have been fabricated by a simple, reliable, and cost-effective technique. The... -
Ionic Screening of Charged-Impurity Scattering in Graphene
We have studied the ionic screening effect on the charge transport properties of graphene field effect transistors. By increasing the ionic concentration, we found dramatic...
