In order to overcome the serious deficiencies of the traditional aqueous centrifugation method in on-demand purification of metal nanoparticles, we have theoretically and experimentally developed a simple purification method based on the nanoparticles' surface area discrepancy, which can separate particles with the same mass but different shapes. As an example, we apply this method to obtain on...

TiO2 nanostructures, including nanowires, highly ordered nanotube arrays, and single crystalline nanoplates, were obtained from electrochemically anodized Ti foil in a fluorine-containing ethylene glycol electrolyte. The TiO2 nanowires, formed by the electric field induced chemical splitting of TiO2 nanotubes by fluoride ions during a lengthy anodization can be isolated from the nanotube arrays...

The study on the shape evolution of metal nanoparticles (MNPs) is crucial to gain an understanding on controlling the shape and size of metal nanostructures. In this work, a detailed study on shape evolution of silver (Ag) nanospheres to nanoplates induced by hydrogen peroxide (H2O2) was performed. According to the growth mechanism of Ag nanoplates, the spectrophotometric method combined with c...

We report for the first time a simple low-cost electrochemical route to synthesis of diameter-controlled hierarchical flowerlike gold microstructures with "clean" surfaces using gold nanoplates or nanopricks as building blocks without introducing any template or surfactant.

In this paper, the strain-based and stressbased methods for solving optimal orientation problems of orthotropic materials are studied. Closed form solutions for both methods are derived and classified. The optimal orientation of both shear “weak” and some shear “strong” orthotropic materials may coincide with the major principal stress direction in the stress-based method. Similar results from ...

The Magnetic resonance electrical impedance tomography (MREIT) is a new medical imaging method combining electrical impedance tomography (EIT) and current injection MRI technique. In this paper, we show the uniqueness in MREIT problem with an orthotropic conductivity under the hypothesis that the ratios of conductivities are known. Based on an effective numerical differentiation method and an a...

Received January 2009 Accepted November 2010 INTRODUCTION Ureteropelvic-junction-obstruction (UPJO) occurs in 22% to 37% of ectopic kidneys.(1) Laparoscopic dismembered pyeloplasty (LDP) is an acceptable treatment for UPJO in pediatric patients with orthotropic kidneys.(2,3) Laparoscopic flap techniques have less favorable results than LDP in adult patients with orthotropic kidneys.(3) To our b...

The weakness of existing relationships correlating off-axis modulus of elasticity E� to shear mod­ ulus G12 for wood composite panels is demonstrated through presentation of extensive experimental data. A new relationship is proposed that performs better than existing equations found in the literature. This relationship can be manipulated to calculate the shear modulus G12 of orthotropic specim...

Solar Water Splitting Electrically connected and optically paralleled photoelectrochemical-photovoltaic tandem architecture is placed on the coast in sunlight. A photovoltaic cell produces electricity provides it to a photocathode. silicon photocathode, which consists of TiO2 nanorods passivation layer MoS2 nanoplates, submerged under sea water generates hydrogen gas. As can be seen from enlarg...

In this article, the free vibration behavior of nanoscale FG rectangular plates is studied within the framework of the refined plate theory (RPT) and small-scale effects are taken into account. Using the nonlocal elasticity theory, the governing equations are derived for single-layered FG nanoplate. The Navier’s method is employed to obtain closed-form solutions for rectangular nanoplates assum...