Dynamic Integration and Construct of Web Services Based on Ontology in Information Grid

Time Dependence and Signs of the Shift of the Surface Plasmon Resonance Frequency in Nanocages Elucidate the Nanocatalysis Mechanism in Hollow Nanoparticles

“…Each solution was divided into two equal volumes in two vials. There are some silver atoms left inside each AuNC; 34 therefore to prepare gold/platinum shell-shell nanocages (AuPtNCs), platinum salt solution was added to the AuNC solution where the silver atoms in the inside wall of AuNCs are replaced by Pt atoms. Three milliliters of potassium tetrachloropalatinate(II) (0.05 g per 10 mL of DI water) were added (1 mL by 1 mL) every 5 min, with constant shaking.…”

Metal Nanoparticles with Gain toward Single-Molecule Detection by Surface-Enhanced Raman Scattering

“…Such nanostructures can be easily synthesized using the galvanic replace-ment reaction between single-crystal Ag nanocubes and HAuCl 4 . 20,21 The SPR peaks of these nanoboxes can be conveniently tuned from the visible to the near-infrared region, in particular with strong absorption at a wavelength around 800 nm for biomedical applications such as early cancer diagnosis and photothermal treatment. 20,21 Figure 1a shows the calculated optical spectra of extinction (C ext ), scattering (C sca ), and absorption (C abs ) cross sections for the Au nanobox by means of the discrete-dipole approximation (DDA) method.…”

“…20,21 The SPR peaks of these nanoboxes can be conveniently tuned from the visible to the near-infrared region, in particular with strong absorption at a wavelength around 800 nm for biomedical applications such as early cancer diagnosis and photothermal treatment. 20,21 Figure 1a shows the calculated optical spectra of extinction (C ext ), scattering (C sca ), and absorption (C abs ) cross sections for the Au nanobox by means of the discrete-dipole approximation (DDA) method. 22,23 Here the nanobox is immersed in water with a refractive index of 1.33, and the core region is also filled with water.…”

“…The corners of the nanoboxes can also be truncated off to generate a nanocage to allow for loading of the gain material into the core region. 21 These features will be beneficial to the demonstration of lasing and fabrication of practical device for single-molecule SERS detection.…”

Ultrasmall Silver Nanopores Fabricated by Femtosecond Laser Pulses

“…Meanwhile light-illuminated chemical reduction 16,17,25,26 and thermal processing 27 have been used to make various nanoscale metal structures, such as nanowires, 26 nanoprisms, 17 nanorings, 28 and nanocages. 29 So far nanostructures smaller than 5 nm, especially metallic nanopores, have not been achieved. In this work we report a step toward advancing the capability of optical methods to make the ultrasmall metal structures with femtosecond laser pulses.…”