Humidity-Controlled Tunable Emission in a Dye-Incorporated Metal-Hydrogel-Metal Cavity.

Actively controllable photoluminescence is potent for a wide variety of applications from biosensing and imaging to optoelectronic components. Traditionally, methods to achieve active emission control are limited due to complex fabrication processes or irreversible tuning. Here, we demonstrate active emission tuning, achieved by changing the ambient humidity in a fluorescent dye-containing hydrogel integrated into a metal-insulator-metal (MIM) system.

Humidity- and Temperature-Tunable Metal-Hydrogel-Metal Reflective Filters.

A tunable reflectance filter based on a metal-hydrogel-metal structure responsive to humidity and temperature is reported. The filter employs a poly(-isopropylacrylamide)-acrylamidobenzophenone (PNIPAm-BP) hydrogel as an insulator layer in the metal-insulator-metal (MIM) assembly. The optical resonance of the structure is tunable by water immersion across the visible and near-infrared range.

Nonresonant Local Fields Enhance Second-Harmonic Generation from Metal Nanoislands with Dielectric Cover.

We study second-harmonic generation from gold nanoislands covered with amorphous titanium oxide (TiO_{2}) films. As the TiO_{2} thickness increases, the plasmon resonance of the nanoislands shifts away from the second-harmonic wavelength of 532 nm, diminishing the resonant enhancement of the process at this wavelength. Nevertheless, the second-harmonic signal is enhanced by up to a factor of 45 with increasing TiO_{2} thickness.

Bulk second-harmonic generation from thermally evaporated indium selenide thin films.

We investigate bulk second-order nonlinear optical properties of amorphous indium selenide thin films fabricated by thermal evaporation. Such films are shown to exhibit strong and photostable second-harmonic generation (SHG). We report strong thickness dependence of the second-harmonic signals as characterized by the Maker-fringe method.

Recent developments in .

is a suite of programs for processing data from 'serial crystallography' experiments, which are usually performed using X-ray free-electron lasers (FELs) but also increasingly with other X-ray sources. The software suite has been under development since 2009, just before the first hard FEL experiments were performed, and has been significantly updated and improved since then. This article describes the most important improvements which have been made to since the first release version.

2D-patterning of self-assembled silver nanoisland films.

The paper is dedicated to the recently developed by the authors technique of silver nanoisland growth, allowing self-arrangement of 2D-patterns of nanoislands. The technique employs silver out-diffusion from ion-exchanged glass in the course of annealing in hydrogen. To modify the silver ion distribution in the exchanged soda-lime glass we included the thermal poling of the ion-exchanged glass with a profiled electrode as an intermediate stage of the process.

Revealing the nanoparticles aspect ratio in the glass-metal nanocomposites irradiated with femtosecond laser.

We studied a femtosecond laser shaping of silver nanoparticles embedded in soda-lime glass. Comparing experimental absorption spectra with the modeling based on Maxwell Garnett approximation modified for spheroidal inclusions, we obtained the mean aspect ratio of the re-shaped silver nanoparticles as a function of the laser fluence. We demonstrated that under our experimental conditions the spherical shape of silver nanoparticles changed to a prolate spheroid with the aspect ratio as high as 3.

Erratum to: Plasmonic molecules via glass annealing in hydrogen.

[This corrects the article DOI: 10.1186/1556-276X-9-606.].

Plasmonic molecules via glass annealing in hydrogen.

Unlabelled: Growth of self-assembled metal nanoislands on the surface of silver ion-exchanged glasses via their thermal processing in hydrogen followed by out-diffusion of neutral silver is studied. The combination of thermal poling of the ion-exchanged glass with structured electrode and silver out-diffusion was used for simple formation of separated groups of several metal nanoislands presenting plasmonic molecules. The kinetics of nanoisland formation and temporal evolution of their size distribution on the surface of poled and unpoled glass are modeled.

Out-diffused silver island films for surface-enhanced Raman scattering protected with TiO2 films using atomic layer deposition.

Unlabelled: We fabricated self-assembled silver nanoisland films using a recently developed technique based on out-diffusion of silver from an ion-exchanged glass substrate in reducing atmosphere. We demonstrate that the position of the surface plasmon resonance of the films depends on the conditions of the film growth. The resonance can be gradually shifted up to 100 nm towards longer wavelengths by using atomic layer deposition of titania, from 3 to 100 nm in thickness, upon the film.

Room-temperature macromolecular serial crystallography using synchrotron radiation.

A new approach for collecting data from many hundreds of thousands of microcrystals using X-ray pulses from a free-electron laser has recently been developed. Referred to as serial crystallography, diffraction patterns are recorded at a constant rate as a suspension of protein crystals flows across the path of an X-ray beam. Events that by chance contain single-crystal diffraction patterns are retained, then indexed and merged to form a three-dimensional set of reflection intensities for structure determination.

[Recurrent and residual echinococcosis of the abdominal organs].

The article gives information on 14 patients who were operated on for a second time for echinococcosis of various localization. The authors conclude that all cases in which the carrier of the germ elements of the parasite remains in the organism should be logically called residual and not false recurrence. A disease caused by a new infection should be called ++re-invasive echinococcosis but not a true recurrence.

[Surgical treatment of pulmonary echinococcosis].

Operation with the use of a laser for resection of the external fibrous capsule with re-expansion of the remaining cavity in patients with echinococcosis of the lungs is more effective than operation by capitonnage of the cavity. The main advantages of laser operations were the absence of closed cavities, deformities of bronchi, atelectasic areas of tissue around the fibrous cavity, and disorders of capillary blood flow and bronchial patency. All this allowed poor results of the operation and fatal outcomes in the main group of patients to be avoided.

[Transplantation of vascularized tissue flaps in the treatment of chronic osteomyelitis].

Experience in transplantation of vascularized tissue grafts in 38 patients with chronic osteomyelitis showed the method to be highly effective and to possess some essential advantages over the other methods for surgical treatment of chronic osteomyelitis. Some types of skin and musculocutaneous grafts were used in cases with affection of the leg and foot bones with defects in the skin and soft tissues and "osteomyelitic ulcers". A vascularized graft of the greater omentum was used in the management of large osteomyelitic cavities in the tubular bones.