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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... -
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... -
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... -
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... -
Contact Geometry and Conductance of Crossed Nanotube Junctions under Pressure
We explored the relative stability, structure, and conductance of crossed nanotube junctions with dispersion corrected density functional theory. We found that the most stable... -
Carbon Nanotubes as Injection Electrodes for Organic Thin Film Transistors
We have investigated the charge injection efficiency of carbon nanotube electrodes for organic semiconducting layers and compared their performance to that of traditional noble... -
Charge Transport in Dual Gated Bilayer Graphene with Corbino Geometry
The resistance of dual-gated bilayer graphene is measured as a function of temperature and gating electric fields in the Corbino geometry which precludes edge transport. The... -
Suppression of Auger Processes in Confined Structures
We explore how the size and shape of the microscopic confinement potential affects the nonradiative Auger decay rate of confined carriers. Calculations conducted in the... -
Monolayer Suppression of Transport Imaged in Annealed PbSe Nanocrystal Arrays
We use correlated electrostatic force, transmission electron, and atomic force microscopy (EFM, TEM, and AFM) to visualize charge transport in monolayers and up to five layers... -
Two Distinct Buckling Modes in Carbon Nanotube Bending
By using controlled SPM manipulation, carbon nanotubes have been continuously bent into a series of increasing angles, and two distinct buckling modes corresponding to “abrupt”... -
Effect of Hydrocarbon Chain Length of Amphiphilic Ruthenium Dyes on Solid-Sta...
We studied the influence of the hydrophobic hydrocarbon chain length of amphiphilic ruthenium dyes on the device performance in solid-state dye-sensitized solar cells. We found...
